JPH01198732A - Film sensitivity display device - Google Patents

Abstract

PURPOSE:To prevent photographing from being executed with erroneous set of sensitivity as it is by changing the displayed shape of film sensitivity in responce to the sensitivity when film sensitivity frequently used is set, and to the sensitivity when film sensitivity not so much used is set, and urging a photographer to confirm when the film sensitivity not so much used is set. CONSTITUTION:A first output means 19 which outputs film sensitivity data, a displaying means 135 which displays the film sensitivity base don the film sensitivity data and second outputting means 127 and 129 which output specified film sensitivity data are provided. And besides, discriminating means EO3-EO21 and OR54-OR63 which respond to a 119th and the second outputting means 127 and 129 and discriminate the film sensitivity data outputted by means of the first outputting means 19 are provided. Display control means NA3, 131 and 133 are provided; they change the displayed shape in response to whether the film sensitivity data outputted by means of the first outputting means 19 in response to the data obtained by means of said discriminating means is different from the specified film sensitivity or not. Thus, the confirmation of the setting of the film sensitivity can be made by a photographer and photographing with the erroneous sensitivity set as it is can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that displays the sensitivity of a film used.

Obedience! Susukun - In recent years, films with various sensitivities have become known, ranging from high sensitivity to low sensitivity. However, the ones that are usually used have sensitivities of ASA100 and SASA400, and those with other sensitivities are rarely used.

Therefore, if the film speed setting is set to something that is not normally used, either the photographer set the film speed incorrectly, or the film speed reading device incorrectly set the film speed. The danger I read is very high. If the film sensitivity is incorrectly set, a problem arises in that proper exposure cannot be obtained.

Therefore, in order to prevent photography from being performed with the film sensitivity set incorrectly, the present invention provides a system for the photographer to check whether the film sensitivity is set incorrectly when a film sensitivity that is not often used is set. It is an object of the present invention to provide a film sensitivity display device that prompts confirmation.

- In order to achieve this object, the film sensitivity display device of the present invention comprises: a first output means for outputting film sensitivity data; and a display for displaying film sensitivity based on the film sensitivity data. means, a second output means for outputting predetermined film sensitivity data, and in response to the #S1 and the second output means, the film sensitivity data outputted by the first output means is output to the predetermined film. a determining means for determining whether or not the data is the same as the sensitivity data; and in response to the determining means, depending on whether the film sensitivity data output by the output means of the tIIJ1 is different from the predetermined film sensitivity data. , and display control means for changing the display form of the display means.

In the film speed display device of the present invention having the above-described configuration, the film speed can be displayed in different forms depending on whether a frequently used film speed is set or a film speed that is rarely used is set. can be changed, so when a film speed that is not often used is set, the photographer can be prompted to check whether the film speed setting is incorrect, and even books with incorrect film speed settings can be shot. You can prevent it from happening.

1l-IJtJ1 diagram shows various data of film (F) from the original (
There are holes (IH) to (EH) in the tip part in front of the position of Fl).
), and Fig. 2 shows the positional relationship of such signal holes (hereinafter, signal holes (IH) to (EH) are represented by (SH)). FIG.

As shown in Fig. 2, the signal hole (SH) is provided between two adjacent par 7 orifices (PH) in the film feeding direction and above the upper end of the par 7 orifices. .

In FIG. 1, the hole (IH) indicates the start of data from the signal hole (SH), and the hole (AH) is a 5-bit hole in which film sensitivity data is set. In this example 101
The data is 01''. (CH) is set with data corresponding to the number of frames taken on the film. In this example, it is 01''. (YH) is set to the year data in the expiration date data, and in this example, it is '00110.
The most significant bit of this data is θ'' in the 80's and 1 in the 90's.

The lower 4 bits are a binary code of θ to 9. Therefore, this example shows the year 1986. (M
H) is set with the month data of the expiration date data, and indicates 1 to 12 in a 4-bit binary code.

In this example, it is "1001", which corresponds to September. (EH) is a hole indicating that the signal hole (SH) has been completed.

FIG. 3 is a block diagram showing the entire camera to which the present invention is applied. (El) is a power supply battery, (SWl) is a photometric switch, and the transistor (
BT, ) is for self-holding. (1) is a constant voltage source, and when the switch (SWl) is closed and the transistor (BT
, ) operates when conductive.

(3) is a well-known photometry, arithmetic and display circuit, and the terminal (
A film sensitivity signal is input from terminal (b).
An exposure time signal is output from , and an aperture value signal is output from (c). The switch (SW, ) is the release switch,
(5) is a release circuit of the exposure control mechanism, and the specific internal circuit is shown in Figure P144. (BT3) is a power supply transistor, (Mg1) is a release magnet whose core is a permanent magnet, and when the electric charge charged in the capacitor (C1) becomes conductive through the transistor (BT,), the coil of the magnet (Mg+) The exposure control mechanism is released. (7) is terminal (b)
This is a well-known exposure control circuit that performs exposure control based on an exposure time signal and an aperture value signal from .

(SW, ) is a switch that is closed when the exposure control operation is completed, and is opened when the charging of the exposure control Iff structure is completed. (SW,) is a switch that is opened when a film is loaded and closed when no film is loaded, and is provided, for example, at the film insertion portion of the spool. (SW, ) is a switch that is closed when the back cover is closed, and (SWz) is a manually operated rewind switch.

(9) is the terminal (f) = (i) *(D − (k) −
Based on the signal from (1), this circuit has functions such as film winding, reading the film signal hole (SH), film advance, film counter, and film rewind. Figure 5.

This will be described later based on FIG. When the film is attached, the terminal (1) is Low'' and the cyrisk (
SCR,) has become non-conductive.

Then, a ``High'' pulse is output from the terminal (q). When this happens, the transistor (BTz) becomes conductive, and the relay magnet (Mgs) works, causing the switch (
SWl3) is closed, and the constant voltage source (11) is also activated to start supplying power to the motor (Ml). Furthermore, since the base current of the transistor (BTz) is supplied through the diode (D,), the conduction of the transistor (BT, . . . ) is maintained even if the terminal (q) becomes "Low". Here, the diode (DI) t (Dco) is connected to the terminal (
q) and the output of the constant voltage source (11). At this time, the cyrisk (SCR, ) is non-conductive, so a resistor (R1) is connected in series to the motor (M), so the motor CM) rotates at a low speed and the film feed is also slow. . This operation is maintained for a certain period of time. By doing this, when you load the film with the back cover open, the film will be fed at low speed for a certain period of time, allowing you to confirm that the film has been loaded properly and to ensure that the film is not loaded properly. This prevents malfunctions such as the back cover being closed and the film not being fed.

When low-speed feeding for film mounting is performed for a certain period of time, a "High" pulse is output from the terminal (r) and the transistor (BT,) becomes conductive, causing the transistor (BT++)%
becomes non-conductive, and low-speed dry feed stops. When the back cover is closed in this state, “High” is output from the terminal (q) again.
” pulse is output and the idle feed starts. At this time, since the terminal (1) is “Higl+”, the thyristor (SCR, ) is conductive and the idle feed is performed at high speed. At this time If the jump feed amount is not preset, the feed will stop after the first object reaches the image frame position, and if the jump feed amount is not preset,
Jump feeding is performed by a preset amount and then stopped. Presetting the amount of blank feed is very effective, for example, when loading partially filmed film into the camera.

From then on, like a normal motor drive device, the exposure control mechanism is charged and the film is wound up every time the photographing of the - frame is completed, and when the photographing of the final frame of the film is completed, the circuit (9) The internal motor automatically rewinds the tape, and once the rewind is complete, the series of operations ends. Further, even when the film has not been wound to the final frame, if the switch (SWI) is manually closed, the film is rewound. In addition, at the beginning of rotation of the motor (Ml), the exposure control mechanism is charged, and when charging is completed, the film is wound, and when charging is completed, the motor (Ml)
The mechanism is such that the film continues to wind up while the rotation is at La.

(19) surrounded by a broken line indicates a film sensitivity data output section, and (13) is a circuit that outputs film sensitivity data preset by the photographer. (15) is a data selector, and when the film sensitivity data from the film signal hole (SH) shown in Figure 1 is read, "
Based on the signal from the terminal (p) that becomes High, data is output from the data output terminal (FSD) of the circuit (9), and when the terminal (p) is Low, that is, the film sensitivity data is When not being read, the preset film sensitivity data from the circuit (13) is output.(17) is a D/A conversion circuit that converts the data from the data selector into an analog signal. It is sent to the photometry, arithmetic and display circuit (3) and the data imprinting circuit (21).In the drawings below, the signal lines with diagonal lines indicate multi-bit signals.

(21) is a data imprinting circuit, and a switch (S
It is only possible to operate when W, , ) are closed.

The data imprinting section of this circuit (21) is provided at the position shown by (54) in Figure fJIJ7. This is because, as will be described later, imprinting is started based on a signal from the terminal (u) indicating that winding of the film has been completed after the end of photography. In this case, since imprinting is performed from the emulsion side of the film, the imprinting time can be controlled to a time corresponding to the film sensitivity. (2
3) is a clock circuit, in which the data terminal (TD) outputs data for copying, and the (TP) outputs a plurality of clock pulses for timing control. In addition,
The clock circuit (23) has a liquid crystal display section that displays data for imprinting on the outside of the camera, and a switch (SW2)
1) is a switch that is closed when illuminating this display section.

(25) compares the expiry date data set on the film shown in Figure 1 (FDD) with the year and month data from the clock circuit (23), and This is a warning circuit that emits a warning sound if the expiration date has expired.

(E2) is a specific circuit example of (21)t(23)t(25) of 0 or more, which is a power supply battery for the data imprinting circuit (21), the clock circuit (23), and the warning circuit (25). are shown in FIGS. 27, 28, 29, and 30.

(27) is a circuit for displaying film sensitivity.

This circuit uses the data input from the data selector (15) to set the commonly used film sensitivity (for example, ASAlo
If the data corresponds to a film other than O and ASA400), the sensitivity value will be displayed blinking, and if it is a commonly used film sensitivity, it will remain lit. SW23) is a switch for illuminating this display section. A specific circuit example of this circuit (27) is shown in FIG.

FIG. 4 shows a specific example of the release circuit (5) shown in FIG. When the photometry switch (SW, ) is closed and the constant voltage circuit (1) starts operating, power is supplied to this circuit, the power-on reset circuit (PR,) operates, and the OR circuit (OR,) is activated. When the primary release switch (SW3) that resets the 7-lip 70-tube (FF,
igh” (signal that allows release, explained later)
, the output of the AND circuit (AN,) becomes "High", and with this rising signal, the 729171 circuit (O8,) outputs a "High" pulse for a certain period of time.

Then, the “L” output of this one-shot circuit (O8,)
One-shot circuit (
A "High" pulse is output from the osco (osco), and 7 lip props (FF, ) are set based on this rising edge. As a result, the terminal (i) becomes "Higb", the power supply holding transistor (BTl) becomes conductive, and the terminal (g) becomes "Low".
BT3) becomes conductive. In addition, ° one-shot circuit (O
8,) is sent from the terminal (h) to the transistor (B
Ts), the release switch) (Mg+) is operated, and release is performed using the exposure control Wi mechanism. Here, during the output pulse of the one-shot circuit (O8,), the photometry switch (SW, ) and the release switch (SW3) are closed almost simultaneously to prevent the release from occurring before the photometry circuit is stabilized. Therefore, it takes longer than the time it takes for the photometry circuit to be stabilized after power is supplied.

When the exposure control operation is completed, the switch (S
Ws) is closed and the output of the inverter (IN, ) becomes “H”.
At this rising edge, a High'' pulse is output from M (OS s) and passes through the OR circuit (OR, ) to 7 rip and 70 rip (FF, ).
is reset. When the film winding is completed and the terminal (e) becomes "High", if the release switch (SW, ) remains closed, the output of the AND circuit (AN, ) becomes "High" again. , the release is performed again and the exposure control operation is performed. That is, continuous shooting is performed. Also, the terminal (e) is “Hi [rh”]
If the release switch (SW3) is open when this happens, camera operation will stop. In addition, in this circuit diagram,
'''High from the power-on reset circuit (PR,)
The open circuit where the pulse h'' is output is an AND circuit (AN
It is desirable to input the output via the inverter to the AND circuit (ANl) so that the output of I) is "Low".

5 and 6 are specific circuit examples of the circuit block (9) in FIG. 3. “First, this circuit (9) is directly connected to the power battery (El) as shown in Figure 3. Therefore, when the power battery (El) is installed, the power is turned on.
The signal generated from the output terminal (Pop) of the reset circuit (PR) becomes the reset signal for each circuit in Figures 5 and 6, and is further connected to this terminal (PO,) and the rewinding start signal (
RWI): Terminal (P
O2), which also serves as a reset signal.

First, the operation when no film is attached will be explained. When the exposure control operation is completed, the terminal (f) becomes “Low”.
", and the one-shot circuit (O8lff) outputs "Hi".
A pulse of gh'' is output and the OR circuit (OR?) is output from the terminal (NWI) of the OR circuit (OR?).

, ) (Figure 6), a High'' pulse is output from the terminal (q), the transistor (BT, , ) in Figure 3 becomes conductive, and the motor (M,) operates.Then, shutter charging is completed. Then, the switch (SW, ) is opened and the output of the inverter (IN+4) becomes "High".At this time, since no film is attached, the switch (SW, ) is opened.
Wy) is closed and the terminal (FSS) is 'High'
Therefore, the output of the AND circuit (AN, ) is “Hi”.
12h'' and the one-shot circuit (O
3, 4), a "High" pulse is output from the terminal (S), the transistor (BT, ) becomes conductive for a certain period of time, the transistor (BT, ) becomes non-conductive, and the motor (Ml
) stops rotating. Therefore, when no film is loaded, the motor (
Ml) stops and the film winding PIIWIl does not operate.
) is reset and the Q output (LHT) is "Hi8h", so the pulse from the output terminal (q) is also output from the terminal (1) via the AND circuit (AN, ) (Figure 6). be done. This pulse causes a thyristor (SCR,)
conducts, so the current flowing through the motor (Ml) is the resistance (
R1)' does not flow, and the motor (Ml) rotates at high speed.

Next, the operation when the film is attached will be explained step by step. When the film is attached, the switch (SW7) is opened and the terminal (j) becomes "HiHI+", which turns the inverter (
IN? ) becomes “High”.

At this rising edge, the one-shot circuit (O8s) outputs “H”.
A pulse of ``high'' is output and the pulse is
F,) is set and the terminal (LHT) becomes "Low". Also, the timer (TII) is a one-shot circuit (
Based on the signal from O8, ), a certain period of time for empty feeding for film mounting is counted. Furthermore, in response to the falling signal of the output pulse of the one-shot circuit (O8s), a 'High' pulse is output from the one-shot circuit (O8+,), and the signal from this terminal (LWI) is transmitted to the OR circuit (OR14) ( It is output from the terminal (q) via the transistor (BT, . . . ) (FIG. 6), and the transistor (BT, ) (FIG. 3) becomes conductive, thereby performing empty feeding for film mounting.
The Q output (LHT) of 7 lip/70 tube (FF3) is L.
ow”, so the output of the AND circuit (AN6) (Fig. 6) (
1) remains “Low” and the thyristor (SC
R, ) is not conducting, therefore the current flowing through the motor (Ml) flows through the resistor (R1) and the motor (Ml)
rotates at low speed, and the film is fed at low speed.

This is to prevent the photographer from being surprised if the film starts to advance at high speed as soon as the film is loaded, and also to prevent him from feeling uneasy about getting injured at the edge of the film. This was done out of consideration.

When the timer (TII) finishes counting for a certain period of time, “
A pulse of ``Higl+'' is output, and the 7 lip/70 knob (FF3) is reset via the OR circuit (OR,), and the 7 lip/70 knob (FF, ) is set.At this time, the back cover is closed. When the switches (SWs) are open and the output of the inverter (IN, ) is High, the pulse from the timer (TI,) is sent to the terminal (LWE,) of the AND circuit (AN,). is output from.

This signal is output from the terminal (r) via the OR circuit (OR1,) (Figure 6), and is output from the transistor (Bl) in Figure 3.
is conductive while there is a "High" pulse output by the timer (T1.), the transistors (BT, . . . ) are rendered non-conductive, and the rotation of the motor (Ml) is stopped.

Also, one-shot circuit < OS,. ) from the pulse (
LWI) sets the 7-lip, 70-tub (FF2, ) (Fig. 6), the Q output becomes "High", the output of the off circuit (OR23) becomes 'High', and the display circuit (DI, ) This will indicate that the film is being wound.

When the photographer confirms that the film is loaded and closes the back cover, the switch (5W9) is closed and the inverter (Ir'is
) becomes “High”. Since 7 rip 70 rip (FFS) has already been set, the output of the AND circuit (ANs) becomes "High". At this rising edge, the one-shot circuit (O81,) outputs “High”.
A pulse is output, and this pulse is an OR circuit (OR,)
is applied to the 7-lip/70-tub (FF, ) via the 7-lip/70-tub (FF, ), and the Q output
) becomes “High”, the pulse from the output terminal (NWI) of the OR circuit (OR, ) is output from the terminal (q) via the OR circuit (OR, , ), and the motor (Ml) starts rotating. do. On the other hand, since the output (LHT) of the 7-lip/70-tube (FF) is 'High', the pulse from the terminal (q) is output from the terminal (1) via the AND circuit (AN,). and Cyrisk (SCR,
) conducts, and the current flowing through the motor (Ml) is the resistance (
The film does not flow through R3) but flows through the thyristor (SCR, ) to perform idle feeding of the film at high speed. In addition, terminal (1)
Even if the current becomes "Low", the conduction of the thyristor (SCR, ) is maintained by the current of the motor (Ml). Also, the Q output (MD) of 7 lip/70 knob (FF?) is “High”.
h”, the OR circuit (
The output of ORz3) becomes “High” and the display circuit (D
Iy) indicates that the film is being fed. Furthermore, this display device! (DI,) continues to be displayed even after the low-speed empty feed ends because 7 rip and 70 twig (FF23) are set to -.

Q output (MD) of 7 lip/70 tube (FFy) is “H”
When the signal becomes "high", the transistors (BT, . . . ) become conductive, and power is supplied to the par-7 oscillator a detection section (33) and the t/signal hole detection section (35) ((31) surrounded by a broken line). The Par 7 olecitane detector (33) outputs a pulse train based on the Par 7 olethane of the film being transferred, and the signal type detector (35) outputs a pulse train corresponding to the signal hole (SH) shown in Figure 1. is output.

A reading circuit (37) based on these two pulse trains
reads various data on the film through the signal holes shown in FIG. Then, the pulse from the signal hole (EH) is output from the reading circuit (37), 7 lip/70 knob (FFs) are set, and the Q output (p) becomes "High".
becomes. The par 7 orifice detection section (33), signal hole detection section (35), and reading circuit (37) will be described in detail based on FIGS. 7 to 26°. Of the data read by the reading circuit (37), data (FND) on the number of frames that can be photographed by the signal hole (CH) is displayed on the display device (DI). Further, the film expiration date data (FDD) from the signal holes (YH) and (MH) shown in FIG. 1 is sent to the warning circuit (25) in FIG. 3 via the date circuit (GA). Furthermore, the film sensitivity data from the signal hole (AH) can be obtained from the date circuit (
The circuit (19) enclosed by the broken line in Figure 3 is converted into a code suitable for the camera via the decoder (DE) and decoder (DE).
The data is sent to the data selector (15) inside.

If a film without a signal hole (SH) is installed, the signal hole (EH) is output from the reading circuit (37).
Since no pulse is output, the 7-rip and 70-rip (FF) remain reset and the terminal (p) is set to “Lo”.
Therefore, all outputs of the date circuit (GA) are “0”, and all outputs of the decoder (DE) are also “0”.At this time, the display device (D
It is preferable that instead of displaying the number of shots that can be taken with the film, it should display that a film without a signal hole (SH) is loaded.

In the case of a film with a signal hole (SH), when the signal hole (IH) is detected, the terminal ■ of the reading circuit (37) becomes “High” and the date of the AND circuit (AN, , ) is opened. At the same time, the output of the inverter (INFs) becomes "Low''', and the date of the AND circuit (AN+3) is interrupted. When the signal hole (EH) is detected, the signal hole (EH) is connected from terminal ■ of the reading circuit (37).
A pulse corresponding to the
Fs) is set and the data F of the AND circuit (ANs) is opened. And the Par 7 Olesi 1 detection section (33)
The pulse train from is input to the ternary counter (Co, ), and the third pulse is output from this counter (Co, ). This pulse is generated by an AND circuit (A N +s),
7 rip/70 rip (F
F, , ) and set to 7 rip/70 rip (FF++). On the other hand, in the case of a film without a signal hole (SH), the terminal ■ of the reading circuit (37) is “
The date of the AND circuit (AN13) is opened and the date of the AND circuit (AN+s) is closed.Then, the date of the AND circuit (AN+s) is closed.
The signal from is sent to a hexadecimal counter consisting of an octal counter (CO,) and a binary counter (COl).
The second pulse is output from the binary counter (CO3) and sent to the 7-rip/70-rip (FF, ,) via the AND circuit (AN, ,) and the OR circuit (OR1,).
Rip 70 knob (Fz) is set.

When the back cover is closed while the film is being fed at low speed, the switches (SWs) are closed, the date of the AND circuit (AN3) is closed, and the timer (TII) is closed.
) is not output from the terminal (LWE, ) of the AND circuit (AN3). When the timer (TII) outputs a pulse and the 7-rip prop (FF5) is set, the date of the AND circuit (ANs) is open, so the output of the AND circuit (ANs) is Immediately becomes “High”,
The One 2171 circuit (O8z) outputs a “High” pulse, and the OR circuit (OR?) also outputs a “High+” pulse. Therefore, in this case, when the low speed feeding for a certain period of time is completed, Immediately shifts to high-speed empty feeding operation.

(PN) is a data output device that outputs the data of the preset number of blank feed frames, and (DI5) is a display device that displays the preset data. When installed, data of "00...0" is output from the data output device (PN) and the output of the NOR circuit (No. 9) is High.
Therefore, when the 7-rip prop (FF11) is set, the output of the AND circuit (AN+s) becomes “High.”
” and the output terminal of the 722571 circuit (O8, 5) (
A "High" pulse is output from the FWE) and output from the terminal (r) via the OR circuit (OR33> (Fig. 6), stopping the idle feed, and this pulse is then output from the OFF circuit (OR). is output to the output terminal (FL, ), 7 lip/70 knob (FF+s) is set, and the Q output (F
L2) becomes “High”. In the manner described above, the first frame (F,) is rapidly fed to the position of the photographing angle of view.

When loading a film that has been partially photographed, the data output device (PN) is preset with data for a larger number of frames than the number of photographed frames, and this data is output. At this time, the output of the NOR circuit (No,) is "Low" and the date of the AND circuit (AN,,) is closed, and the output of the inverter (IN,,) is "High" and the AND circuit (AN+t ) date is held. And 7 lips.
70 knobs (FFz) are set and the AND circuit (AN,
) is opened, the Par 7 Olesi 1 detector (
The pulse train from 33) is sent to an octal counter (Co) via an AND circuit (AN7), which outputs a pulse corresponding to one perforation every 8 perforations (one frame). is the film counter (Co
, ). From the counter (CO2), data (
FCD) is output, and this data (FCD) and the data from the data output device (PN) of the preset number of frames are compared by the comparator (COM), and when the two match, the output becomes “High” and the AND Circuit (AN.

7) becomes 'High'.This causes the output terminal (PWE) of the one-shirat circuit (O8+,) to go 'H'.
The pulse of igb'' is output and the OR circuit (OR33) (
It is output to the terminal (r) via the terminal (Fig. 6), and the idle feeding is stopped. On the other hand, this pulse is output to the terminal (FL, ) via the OR circuit (0R1,), and is output to the terminal (FL, ) through the OR circuit (0R1,).
At) is set and the Q output (FL2) becomes High". If the film is set to 0 or higher and the film has been shot halfway, the frame that has not been shot will be automatically Since the film is continuously fed, there is no need for the conventional trouble of, for example, having to put a lens cap on and take many blank shots while feeding the film, making it possible to create a camera that makes it very easy to load film.

The operation when the number of blank feed frames is erroneously preset to be greater than the number of recordable frames of the film will be explained.

The output pulses (pcs) of the octal counter (Co, ) are converted into 7 rip and 70 rip (FF,
t) to reset it, and also to the timer circuit (715) to start counting a certain period of time every time the pulse from the terminal (pcs) falls. In addition, at the time when this empty feed is being performed, there are 7 rip
The Q output (FL2) of 70 tubes (FFl,) is “Low”
Therefore, the pulse from the terminal (PO2) is passed through the AND circuit (A
N, s) is not output. When the film is wound up to the final frame by empty feed, the film is stretched,
The perforation detection section (33) no longer outputs a pulse signal based on the par-7 orex-1 signal. Therefore,
Even if a certain period of time elapses from the pulse output from the output terminal (pcs) of the counter (Cog) before the film is stretched, the next pulse will not be output from the terminal (pcs).
Therefore, the pulses from the timers (TIs) are 7 rips.
Sent to 70 Tsubu (FFI,) and 7 lip 70 Tsubu (
FFat) is set and the Q output becomes "Hillb".

On the other hand, at this time, the output of the comparator (COM) is “Lo
w", the 7-rip/70-tub (FF1.) remains reset and the Q output is "High". Therefore, the output of the AND circuit (AN23) is "High".
gb", a "Higl+" pulse is output from the output terminal (AWE) of the one-shot circuit (O821), and is output to the terminal (r) via the OR circuit (OR33) (Fig. 6) to start the winding operation. Furthermore, when the output of the AND circuit (AN23) goes high, the warning device (WA, ) is activated, giving a warning that an incorrect value has been preset.

Next, a normal winding operation will be explained. When the idle feed is completed, the pulse from the output terminal (FLl) of the OR circuit (OR, 3) sets 7 rip/70 lub (FF, 5.) and the Q output (FL2) becomes 'High'. Then, when the operation of the exposure control mechanism is completed, the switch (Sws
) is closed, the terminal (f) becomes "Low", the output of the inverter (INF3) becomes "High" and the
A High'' pulse is output from the 29174 circuit (O8+3), and a pulse is output from the output terminal (NWI) of the OR circuit (ORt).This signal is output from the OR circuit (OR1*
) and the AND circuit (AN@) (both shown in Figure 6) from the terminals (q) and (1), and the motor (M, )
rotates at high speed, charges the exposure control mechanism, and charges the film 8! A raise will take place. In addition, the pulse from the terminal (NWI) sets the 7-rip and 70-tub (FF, ), the transistor (BT□) becomes conductive, and the perforation detection section (33) operates, and the pulse train by the par-7 oleasisin is turned on and off. A pulse of i, 841 par 7 oscillator 1 is sent to the octal counter (Co, ) via the circuit (AN, ) and is output from the terminal (pcs), and the film counter (CO7) counts up by one. (
It is displayed on a display device (DII) corresponding to the output data of CO2). Furthermore, since the terminal (FL2) is "High", the pulse from the terminal (pcs) is
It is output from the AND circuit (AN+1), and at the falling edge of this pulse, a pulse is output from the output terminal (NWE) of the one-shot circuit (O81,), and the off circuit (OR: l
, ) (Fig. 6) from the terminal (r), and the rotation of the motor (Ml) is stopped. Furthermore, the terminal (NW
The pulse from E) is also output from the terminal (u) via the OR circuit (OR3,) (Fig. 6), and this signal is sent to the data imprinting circuit (21) shown in Fig. 3. Data imprinting starts based on .

Next, the winding operation of the final piece will be explained. exposure control f
When the operation of the i structure is completed and a pulse is output from the one-shot circuit (O83,), the 7-rip and 70-tube (FF1s) are reset via the OR circuit (OR+s), and the Q output becomes "High". . Further, the 7-lip/70-tube (FF, s) is set by a signal from the terminal (FL, ), and the terminal (FL2) is set to "High", opening the date of the AND circuit (ANT+). Further, the timer (TI) starts counting a certain period of time at the rise of the pulse from the one-shot circuit (O8+3). When you try to wind the last frame, the film is stretched, and the counter (COs) does not output pulses due to the 8 perforations, and the timer (TT:l) finishes counting for a fixed time and outputs a "High" pulse. No pulse is output from the output terminal (pcs) of the counter (Co, ) until the output of . Therefore, the pulse from the timer (TI3) is output from the output terminal (EWE) of the AND circuit (AN21), and is output to the terminal (r) via the OR circuit (OR33) (Figure 6) to stop winding. . Furthermore, the pulse from the terminal (EWE) is an OR circuit (OR3,
) (FIG. 6) to the terminal (u), and the data imprinting circuit (21) shown in FIG. 3 starts operating.

Furthermore, the pulse from the terminal (EWE) causes 7 rip and 70
The knob (FF21) (Fig. 5) is set and the Q output power is set.
``High'', the warning device ff1 (WA2) is activated to warn that the film has been wound to the final frame.Furthermore, the timer circuit (TI, ) is activated by the pulse from the terminal (EWE) to keep the film constant. Start counting the time. This time is longer than the time required to imprint the data. Then, when the - fixed time count ends, a "High" pulse is output from the terminal (NRW) and the
At the same time as the rip-70 knob (FF21) is reset, a rewinding operation, which will be described later, is started. In the case of this final frame, the photographic frame has not been completely rolled up, so the position where the data is imprinted is different from that of the other frames, but the data is reliably imprinted.

“High” from the output terminal (NRW) of the timer (TI,)
When the pulse h″ is output, the OR circuit (OR) l)(
A pulse is output from the output terminal (RWI) of Fig. 6),
Transistor (BT,,) through diode (D,)
conducts, the relay magnet (Mgs) operates, the switch (SWI7) is connected to the power supply, and the motor (M,
) begins to rotate and the unwinding operation begins, and a base current for maintaining continuity is supplied to the base of the transistor (BTIS) through the diode (D, ), and the transistor (
BTll) continuity is maintained. Furthermore, an OR circuit (O
7 rip prop (FF31) is set by the pulse from the output terminal (RWI) of R11), and the AND circuit (
AN21)'s date is asked, and the display device (D
Is) indicates that rewinding is being performed. Then, the film comes off the spool and switches (
SW, ) (Fig. 5) is closed and terminal (j) becomes “Low”
and the output (FSS) of the inverter (IN,) becomes Hi.
gh” and the one-shot circuit (O82,) outputs “Hi”.
gh” pulse is output and the AND circuit (AN2s)
Transistor) (BT) is output from the output terminal (RWE) of
,? ) becomes conductive, the transistor (BTUg) becomes non-conductive, the magnet (Mgs) becomes inactive, the switch (SW l 7 ) is connected to ground, and the motor (M3
) and the transistor (BTls) are stopped, and the rewinding operation is stopped. Note that the pulse from the output terminal (RWI) of the OR circuit (OR, , ) is sent to the OR circuit (ORs) (Figure 5) as described above and output from the terminal (PO2), which resets many circuits. It becomes a signal.

Next, the operation when manually closing the switch (SW++) (FIG. 6) and rewinding will be described. Switch (SW
, , ) are closed, the terminal (1) becomes "Low" and the inverter (INFs) becomes "High". When this switch (SW, ) is closed, if no film is attached, the switch (SW, ) is closed, the terminal (FS'S) becomes "High", and the inverter (IN
2. ) output is “Low”, so the AND circuit (AN2.)
The output remains Low'' and no rewinding operation is performed.

When the film is attached and the switch (SW, , ) is closed, the output of the AND circuit (AN25) becomes 'High'''
At this rise, the one-shot circuit (O82S
) outputs a “High” pulse and 7 rip/7
0 knob (FF2s) is set and Q output is 'High.
The output (RWP+) of the NOR circuit (NOs) is
While the output of the OR circuit (OR2z) is “High”’, 7
While Lip 70 Tsubu (FF2.) is set,
And when the terminal (i) is "High", it becomes "Low" and the date of the AND circuit (AN27) is closed. NOR circuit (to explain the period during which the NO output goes "Low" more closely to the camera's operation, it is the time between the start of low-speed dry feed and the start of high-speed feed (7 rip, 70 rip). (
FF23) is set), while high-speed empty feeding and normal winding are being performed ('4i child (MD)
is “High”), and open until winding to the final frame is completed and rewinding is completed (7 rip, 70 rip (F)
F2, ) is set (open), and while the exposure control operation is being performed (while terminal (i) is “Higl+”)
It has become. Therefore, during this period, there will be 7 lips and 70 tubes (
Even if FF21) is set, the AND circuit (AN2,) does not become "High".

If 7 rip and 70 rip (FF, ) are set in a case other than the above, the output of the AND circuit (AN2?) will be “H”.
When the signal goes high, a high pulse is output from the output terminal (HRW) of the one-shot circuit (O82,) and the rewinding operation starts.The rewinding operation is completed as normal rewinding. Similarly, the film comes off the spool and is stopped by outputting a pulse from the one-shot circuit (O82,).

In addition, 7 lip/70 knob (FF31) is an OR circuit (O
Since it is reset by the falling signal of the pulse from the AND circuit (AN2s), the pulse from the OR circuit (OR21) is reliably output from the output terminal (RWE) of the AND circuit (AN2s).

Next, a description will be given of the signal for inhibiting the 17 + signal from the terminal (e) described in FIG. As shown in Figure 6, while the output of the AO circuit (OR2,) is "High" and while the 7 lip/70 knob (FF2S) is set, the output of the NOR circuit (No,) is (e) is "Low" and no release is performed, while the output of the OR circuit (OR2s) is "High", until the film is loaded and the high-speed empty feed is completed; Normal '8!
This is while the increase is being carried out. On the other hand, while the 7-rip prop (FF2.) is set, the preset number of blank feed frames is greater than the number of frames that can be shot on the film, and a "High" pulse is output from the terminal (AWE), causing rewinding. This corresponds to the period from when rewinding is started manually until rewinding is completed, or from when rewinding is automatically started until rewinding is completed.

The display device in Figure 6! ! (DI, ), (DI is used to display winding and rewinding, but this display device is omitted and the backflow prevention diode (
(D), (If D is made into a light emitting diode, the light emitting diode (D,) will light up when winding, and the light emitting diode (D,) will light up when rewinding, so it can be used for both winding and rewinding indications. .

FIG. 7 is a perspective view of the detection device of the perforation detection section (33) and signal type detection section (35) of FIG. 5.

In addition, FIG. 8 shows the detection device attached to the crimp plate (49) (1111).
FIG. 9 is a cross-sectional view of the detection Iff viewed from below along the dashed line II in FIG. (41
), (43) are brushes (59), (61), but par 7t
It is an electrical contact that comes into contact when there is a ray a (PH),
As shown in Figure tjS8 and Figure 9, the pitch is shifted by 1.5 pitches from the pitch of the par 7 oleisin (PH). (51) is the brush (
61) is the electrical contact. This brush (59),
(61) is a plate spring (47) for attaching the crimp plate (49).
It is fixed by a member (45) that is integrated with the brushes (59), (
61) is also grounded. In the tjS7 diagram, (5
3) is the screen frame of the camera, and (54) is the imprinting section of the data imprinting device (21) described in FIG. (
55) is a sprocket, and (57) is a spool. m
As shown in Figures 8 and 9, each electrical contact (41), (4
3) and (51) are connected to the power supply through resistors, respectively, and furthermore, inverters (IN, , ), (IN2.),
(IN25) is also connected to the input terminal. Therefore, the brushes (59) and (61) are connected to the electrical contact (41) by the par 7 oleax (PH) or the signal hole (SH).
When it comes into contact with (43) and (51), the inverter (lN25)
, (IN2.) and (IN2) are respectively "High"
'' detection signal is output.

Figure 10 shows a circuit that outputs a bar 7 olecitane signal and a signal hole signal based on the signals from the detection device shown in Figure 7.8.9, and a circuit that reads data from the signal hole based on the two signals. Reading circuit ((33) in Figure 5, (
35) and the reading circuit (corresponding to the reading circuit (37)).

Further, FIG. 11 is a time chart showing waveforms of various parts when reading the signal holes in the film shown in FIG. 1 using the circuit shown in FIG. 10.

The operation shown in FIG. 10 will be explained below based on the time chart shown in FIG. 11. When the transistors (BT, S) in Fig. 5 become conductive and power supply starts to the detection parts (33) and (35), the power-on reset circuit (PR,) operates and the power is transmitted through the OR circuit (oRss). 7 Rip Prop (FF3
3) is reset. As the film moves, the inverters (IN25) and (IN27) invert the inverters IN23, IN2, and so on in FIG. As shown in FIG. 2, two detection signals shifted by a half pitch with respect to the pitch of the perforation (PH) are output. Of these two signals, the signal from the inverter (IN2□) is 7 rip/70
Connect the inverter (IN) to the set terminal of the knob (F F-n).
2. ) is applied to the reset terminal.

Therefore, the 7-lip/70-tub (F F 33) is set by the rising signal of the inverter (IN2?) and reset by the rising signal of the inverter (IN2.). This waveform is shown at (FF33) in FIG. The output waveform of this 7-lip/70-tube (FF) 3) is used as a perforation signal, and the reason for this configuration is as follows:
If (61) were to directly use the signal from contact with electrical contacts (41) and (43), more pulses than necessary would be output due to chattering, etc., and two or more perforations would occur even though one perforation had passed. This is because it will be detected as if it had passed.

Therefore, two inverters (I N, 5), (I N
27) rise signal causes 7 rip and 70 twig (F F
, )), even if the signals of the inverters (I N25) and (I N2.) change after they rise, the output will be 7 rip/70 rip (FF33).
) is unaffected, so one pulse can be reliably obtained for one perforation. Then, the signal from the 7-lip/70-tub (FF, C) is sent to the counter (C0I) and the AND circuit (A) shown in FIG.
Ny), (ANs) will appear.

In addition, as described in Figures 5 and 6, the signal hole (EH
) is set at the rising edge of the third par 7 oscillator 1 signal, and a pulse is output from the one-shimmit circuit (O8+5) using a signal based on the output of the 7 lip/70 knob (FF, ), and with this signal. A one-shot 5-bit circuit (Os,
The film advance is stopped by a pulse from , ). Therefore, the film stops with the brush (59) and the contact point (41) in contact with each other at the third par 7t radius a in the film feeding direction.

In Figure 10, the signal from the inverter (IH2) through the signal hole (IH) is 7 rip, 70 lub (FF3
@) is set, the terminal ■ becomes “High”, and the fifth
While the gate of the AND circuit (AN+s) shown in the figure is heard, the date of the AND circuit (ANI3) is closed, and the circuit enters a film feeding mode for film provided with signal holes and performs the above-described operation.

7 lip / 70 lip (FF”1%) is inverter (IH)
It is set at the falling edge of the signal from 23) and reset at the falling edge of the par 7 oscillator signal from the 7-rip, 70-tub (FF33) (FF3s in Figure 11).
Then, based on the fall of the output of the NAND circuit (NA,), that is, the rise of the perforation signal from the 7-lip, 70-tub (FF, ), the output of the 7-lip, 70-tub (FF3S) is sequentially transferred to the shift register ( SR,), and shift the captured data to terminals (b, I) to (bo), and then the signal hole (rH)
When the signal from the last hole of the signal hole (MH) is shifted to the terminal (b,), that is, when the signal from the last hole of the signal hole (MH) is taken into the terminal (bll), the output of the inverter (■N 2s) becomes ``''Low. '', and the output of the NAND circuit (NAl) is `` regardless of the output of the 7 lip/70 tube (FF33).
It remains High'' and the shift register (SR,)
The terminals (bo) - (bll) have signal holes (IH) - (
The shift operation stops while the signal from MH) is captured. Therefore, the terminal (b) of the shift register (SR+)
, ) to (bll) are the data "1010101001101001 corresponding to the signal hole of the film in Figure 1.
'' (b1 to b1 in Figure 11), and this signal is held until the reset signal (PO2) (film rewinding start signal) from the OR circuit (OR, ) in Figure 5 is input to the reset terminal. Then, the terminal (bo) becomes “High”.
”, the date of the AND circuit (AN3.) is opened, and the pulse from the inverter (■N2.) through the signal hole (EH) is output from the output terminal ■ of the AND circuit (AN code). 11 FF3s), the pulse from this terminal ■ sets the 7 rip 70 knob (FFs) in Figure 5, and the third par 7 oscillator 1 signal from the 7 rip prop (FF33) falls. So the 7th lip in Figure 5.
70 knobs (FF1.) are set (Figure 11 FFz)
, 'ilm movement is stopped.

FIG. 12 is a plan view of a certain type of film.

In the case of this film, the shooting piece par 7 oreshi 1>(
PH) 4tA: There is a small hole (TH) for film identification in the perforation and in the darkness of the par 7 oresian. Therefore, when such a film is inserted into a camera that uses the par 7 ore film detection device shown in Figs. A problem arises in that an erroneous par-7 oscillator δ signal is output, and the film is not transported accurately.

FIG. 13 shows a circuit in which the signal from the hole (TH) in FIG. 12 is disabled and only the signal from the perforation (PH) is output, and FIG. 14 is a time chart of this circuit.

In FIG. 9, since the film is moved to the right, a pulse due to the hole (TH) is first output from the inverter (IN2%), and 1.
It is output from the inverter (IN27) with a delay of 5 cycles.

The AND circuit (AN33) connects the output of the inverter (IN27) and the output of the inverter (IN2.) to the inverter (I
Since the signal decoded in N, 3) is input, the hole (TH
) is output from the inverter (IN2S), a signal that becomes "Low" is output in the middle while the inverter (IN2?) is "High" (Fig. 14 AN, C), similarly. , AND circuit (AN, 5
), the pulse from the hole (TH) is sent to the inverter (IN
When the output is from the inverter (IN2%)
A signal that becomes ``Low'' is output in the middle while 7 is ``High'' (Fig. 14 AN5.), and 7
Rip 70 Tsubu (FF3?) is an AND circuit (AN33
) is set at the rising edge of (
Figure 14 FF Yu,).

Therefore, the output of the flip 70 tube (FF, ) is the hole (
This becomes a perforation signal that is not affected by TH).

FIG. 15 is a perspective view of another embodiment of the par-7 olefin detection device, and FIG. 16 is a sectional view of this device attached to a camera. In Figure 15 (63), (67)
are light emitting diodes (LE, ), (LE3) and 7, respectively.
It is a 7 oto coupler with built-in otodiodes (PD, ), (PD, ), and these are par 7 Olesian (PH
) is shifted by 1/2 period with respect to the - period, and the photodetector (PDs) is arranged so as to detect the hole (TH) earlier by 1/2 period. (65) and (69) are masks for increasing the detection accuracy of par-7 oresin (PH), and their functions will be described later based on FIGS. 21 to 26.

In FIG. 16, (47) is a crimping temporary presser spring, (49)
) is the crimp plate, (83) is the inner cover, and 7 Oto coupler (
(33), light emitting diode (LE,) in (67),
(LE3) Prevent the light from passing through the Par 7 Olasian (PH) from being reflected by the internal film side surface and entering the 7 Otodiodes (PD+), (PD,) (87) The part is the diffused reflection part. (
85) is the back cover, (81) is an idle roller, and (57) is a spool with a built-in winding motor (Ml).

(71) is the camera body, (73) is the shutter unit, (75) is the front frame, (77) is the lens mount, and (79) is the mirror box.

In this case, par 7 olecitane (PH) l! 7 Since the film is detected by an auto coupler and the film is wound by a spool, there is no need for a sprocket to detect the amount of film feed or to feed the film, so no sprocket is provided. Therefore, a mechanism related to the sprocket is omitted, making it possible to reduce the weight and size.

Figure 17 shows the structure of Figure 12 using the configuration of Figures 15 and @16.
Par 7 not affected by the film hole (TH) in the figure
This is a circuit that outputs a constant current signal, and FIG. 18 is a time chart of the output of this circuit.
15), so it emits light with a constant intensity.

Then, there is a photometric circuit composed of a photodetector (PD,), a feedback resistor (R,), and an operational amplifier (OAl), and a photometric circuit consisting of a photodetector (PD, ), a feedback resistor (R,), and an operational amplifier (OA3).
) The outputs of the photometric circuit configured as (OAl) and (0AK) in Fig. 18 are respectively shown as (OAl) and (0AK).
When there is a par 7 olefin (PH), there is almost no light reflected by the film, and as the film moves, it gradually decreases and then increases. Also, when there is a hole (TH), this hole (TH) is smaller than the perforation (PH), so even if the hole (TH) is located at a position where the output of the photometric circuit is minimum, the film around the hole (TH) There is a lot of light reflected by the surface, and the perforation (PH)
The value is much larger than the output of . -(A
C,) is an analog converter, which compares the outputs of the two photometric circuits. Therefore, an operational amplifier (OA
When the output of l) is lowered by par 7 oleic (PH), a hole (T
Even if H) comes and the output of the operational amplifier (OA3) decreases,
According to Par 7 Olesian (PH), the decreasing value is smaller than that of horse mackerel, so OA is <01 and the comparator (AC
, ) will be "Low".Similarly, even if the photocoupler (67) detects the hole (TH) while the photocoupler (67) detects the hole (TH), The output of the operational amplifier (OAl), (OA,) is OA,
>OA, and the output of the comparator (AC,) becomes “H”.
igl+''. Therefore, a perforation signal that is not affected by the hole (TH) can be obtained.

Figure $19 is another example of a circuit for outputting a perforation signal that is not affected by holes (TH). Comparators (A C3) and (A C5) are constant current (c
Constant voltage and operational amplifier (O
The outputs of A, ) and (0A3) are compared, and the fJS20 diagram A C is obtained from each frequency parator (AC,) and (AC5).
A waveform shown in s, AC, is output.

These two outputs are input to the OR circuit (OR, , ), and while the signal from the comparator (Act) is "High"', the comparator (ACs) is set to "High" by the hole (TH). ”, the OR circuit (OR, l) outputs the signal based on the par 7 oscillator a from the comparator (AC, ) as it is, and similarly, the signal based on the par 7 oscillator a from the comparator (ACs) is output as is. comparator (AC3) when
Even if a pulse is output from the hole (TH), the OR circuit (
From OR,, ) is a par 7 from Humpareta (ACs)
The signal due to oscillator a is output (20th
Accordingly, the OFF circuit (OR, , ) outputs the par 7 oscillator signal at a period that is 1/2 of the period of the par 7 oscilloscope a.

The output of this OR circuit (OR, l) is T-7 rip 70
It is input to the T terminal of the tube (TF, ), and a signal whose frequency is divided into 1/2 is output from the Q output (Fig. 20 OR,).
, if this signal is used as a par 7 orex signal, we get
Not affected by signal holes.

Next, the functions of the masks (65) and (69) shown in FIG. 15 will be explained based on FIGS. 21 to 26. First, functions related to specular reflection will be explained based on FIGS. 21 to 25. Figures 21, 22, and 23 show that the luminous flux from the light emitting diode (LE) changes to the 7 otodiodes (PD) when the distance #ld between the 7 otocouplers (PC) and the 7 rectors (RF) is changed. This figure shows how the light is specularly reflected by the 7-rector (RF) and then incident.

In addition, Fig. 25 shows the photodetector (PD) when changing the distance d between beam 7 Rector (RF) and 7 Otocoupler (PC).
) is a characteristic curve showing the output of The horizontal axis is the distance d1 between the coupler (PC) and the 7 rector (RF). It is a relative value.

First, the solid line in FIG. 25 will be explained. This solid line is
It shows the output characteristics of seven photodiodes (PD) in the absence of a mask (M). In this case, long distance (d=8m
As the distance d from a+) becomes shorter, the angle at which each point on the seven photodiodes (PD) faces the light emitting diode (LE) increases, and the amount of light received increases. Then, the output reaches its peak at distance d, and if it gets any closer,
As shown in FIG. 22, the angle seen from each point on the 7 photodiodes (PD) is limited by the barrier <a>,
(Solid line and solid line, -dotted chain line and one-dot chain line) 7 The output of the photodiode (PD) decreases rapidly.

Therefore, without using the mask (M>), par 7 Oresian a (
PH), when there is a film, the distance d,
If we receive the reflected light from a reflective surface located at a distance d when there is a par 7 olethane J, the output when detecting a par 7 olethane is the same as when there is a film. This is about 62% of the output, which poses a problem of poor detection accuracy.

The broken line in FIG. 25 indicates 1! in order to solve the above problem. This figure shows the output characteristics when a mask (M) is provided so as to increase the output difference of seven photodiodes (PD) when the distances are different. In the case of Figure 21, there are 7 otodiodes (
Each point on the PD) is not eclipsed by the mask (M) and the barrier (L), and stares at the entire light emitting diode (LE) (solid line, alpha ray, solid line, and dashed-dotted line), and this viewing angle is the maximum. 7 Otodiodes (PD) with distance d1
output is maximum. Also, Fig. 22 shows the case where the distance d2 is smaller than dl. In this case, regardless of the presence or absence of the mask (M), the point above the 7 photodiodes (PD) becomes a light emitting diode (LE) due to the barrier (a). By decreasing the viewing angle, the characteristics become similar to those shown by the solid line in FIG. 25.

Figure 23 shows 7 otocouplers (PC) and 7 rectors (R).
It is a figure when distance d, of F) becomes larger than d. In this case, the distance between the points on the 7F diode (PD) becomes longer, which reduces the angle at which the entire light emitting diode (LE) is viewed, and the light rays are eclipsed by the mask (M), resulting in a solid line and a solid line. - As shown by the dashed dot line and the dashed dot line, the number of points that do not cover the entire light emitting diode (LE) increases, and the fall becomes more rapid than in the case of the solid line (when there is no mask (M)). Therefore, if the distance between the 7 oto coupler (pc) and the film is dl, and the distance from the reflection surface of the light beam that has passed through the par 7 olethane a is d, then the 7 oto diode when the par 7 stroke 1 is detected is The output of (PD) is approximately 46% of the output when the film is detected, and the detection ability is increased compared to the case without the mask (M).

The dashed-dotted line in FIG. 25 is a characteristic curve when the optical system shown in FIG. 24 is used. In this Figure 24, the photodiode (
The end face (M) of the mask (M) is lower than the point (PDa) on the
b) is located closer to the barrier (l) than the point (LEa) on the light emitting diode (LE).
Ma) is located close to the barrier (α). With this configuration, the amount of light rays excluded is larger than that of the mask (M) shown in FIG. 23, and the fall of the characteristic curve becomes steeper.
) has an output ratio of 100:34. Further, as shown by the broken line in FIG. 24, when the distance to the reflecting surface (RF') becomes 81 or more, the reflected light from the light emitting diode (LE) no longer enters the photodiode (PD). Therefore, if the reflective surface of the light that has passed through the par 7 olethane is kept farther away than the distance d, the output of the photodiode (PD) will be 0 when detecting the par 7 olethane, which will further improve the detection ability. do.

Although specular reflection has been explained in FIGS. 21 to 25, there is usually a considerable amount of light reflected by diffuse reflection on a reflecting surface. Therefore, in FIG. 26, the effect of the mask CM) on this diffuse reflection will be explained. Fig. 26 is a diagram when the par 7 ore 1 (PH) of the film (F) comes to the detection position.
Most of the rays that passed through the inner tube (PH)
) by the diffuse reflection surface (87) of 7 otodiodes (PD
), and furthermore, the specularly reflected light rays almost never enter the photodiode (PD) as described above.On the other hand, the light rays emitted from the light emitting diode (LE) No. point (LE6) are reflected on the film surface ( Among the light rays incident on Fa), the specular reflection component shown by the solid line is definitely reflected by the 7 otodiodes (Fa).
PD), but there is a considerable amount of diffuse reflection components shown by broken lines.

As is clear from the figure, most of these components are cut off by the mask (M). Therefore, the mask (M
) not only improves the signal-to-noise ratio of reflected light due to specular reflection, but also has the function of cutting off excess diffusely reflected light, so it is highly effective in improving the detection ability of par-7 olecitane (PH).

FIG. 27 shows a specific example of the data imprinting circuit (21), clock circuit (23), and expiration warning circuit (25) shown in FIG. (91) is a crystal resonator, (93) is an oscillator, (
95) is a branching unit, 2048Hz 1128Hz, 32H
Outputs a 2Hz, 11Hz signal. (
97) is a clock circuit that measures the year, month, day, hour, minute, and second based on the IHz clock pulse from the frequency divider (95). In addition, in FIG. 3, various clock pulses from the frequency divider (95) are collectively represented by the symbol (TP), and the clock circuit (
The data for imprinting from 97) are collectively indicated by the symbol (TD).

Data (TD) from the clock circuit (97) and a 128 Hz clock pulse are input to a dynamic display circuit (99), and the data imprinted on the liquid crystal is dynamically displayed. Furthermore, when the switch (SW2.) is closed, the transistor (Br3.) is repeatedly turned on and off based on the 2048 Hz clock pulse, and the transformer (
A high voltage clock pulse (2048 Hz) is applied to both end electrodes of the EL panel (ELI) by the TRI), so that the EL panel (ELI) emits light and becomes a backlight light source for a dynamic liquid crystal display. In addition, with EL panel lighting, the light source is only 7 kHz, so it only needs to be placed over the liquid crystal display, and an optical system like that of a lamp is required (and there is no uneven illumination). It has the effect of providing a soft visual appearance.Furthermore, it is more effective than lighting with lamps for products that are desirable to be small and lightweight, such as cameras.

(101) is a display circuit that statically displays data from the clock circuit (97) on a liquid crystal, and a transistor (B
When the switch (SWls) is closed in the data imprinting mode, r3°) is conductive while the imprinting time control circuit (103) surrounded by a broken line outputs a "Higb" signal, and the lamp is turned on. (LA) constant current source (CI?)
A current is passed through the lamp (LA) to cause it to emit light at a constant intensity.

Then, the display data of the static display circuit (101) is imprinted onto the film by the light emission of this lamp (LA). Note that an iEL panel may be used as the light source for imprinting.

Next, the imprint time control circuit (103) surrounded by a broken line
Explain the operation. An analog signal of the apex value of the film sensitivity from the DA converter (17) shown in FIG. 3 is inputted from the terminal (,). This circuit (103) is a switch (
When power supply starts by closing SVV+s), the power-on reset circuit (PR,) operates and the OR circuit (
The 7-lip and 70-tub (FF) are reset via OR<s), and the transistor (BTa+) becomes conductive.
Transistor (BT,.), (BT23), (BT
2%>, (BT2?), (BT21) are non-conductive.

When a pulse is input to the terminal (Ll) from the OR circuit (OR, , ) in Figure 6, the falling edge of this pulse causes the 7-lip prop (FF3
1) is set and the transistor (BT2゜),
(BT23), (BTas), (BT2?
, (BT2s) conducts, and the transistors (BT, , ,
) becomes non-conductive, data imprinting begins, and imprinting time counting also begins. Resistor (Ry) and constant current source (
The 7-pixel value Sv of the film sensitivity from the terminal (,) is input to the subtraction circuit (105) and a voltage of (K - S v) is outputted, and this voltage is applied to the transistor (BTa-). by 2K 72SV V
This current is integrated by a capacitor (C0). This integrated voltage output is a constant current source (CII
, ) and the resistor (R, ), the comparator (A
The output of C,) becomes “High” and the OR circuit (OR
43), the flip 70 knob (FF, , ) is reset and the imprinting operation is stopped. Therefore, the imprinting time is controlled to be inversely proportional to the film sensitivity.

Next, we will explain the film expiration warning circuit.6 Among the data (TD) from the clock circuit (97), the year and month data and the film output through the gate circuit (GA) in Fig. 5 are read. Data for the year and month (FDD)
is input to the magnitude comparison circuit (107), and the output of this magnitude comparison circuit (107) becomes "High" if the data (TD) from the clock circuit (97) is greater than the film expiration date data (FDD). A specific example of this magnitude comparison circuit (107) which becomes "Low" if it is smaller will be described later based on FIGS. 29 and 30.

After the reading of the signal hole (SH) is completed, the 7-lip amplifier (FF*) shown in Fig. 5 is set and the output (p) becomes 'H'.
When it becomes "igh'", the date of the AND circuit (ANss) is asked.Then, the output of the magnitude comparison circuit (107) is "
When it becomes “High”, the output of the AND circuit (AN3.)
``High'' becomes 1. The one-shot circuit (O831) is activated by the rise of the output of the AND circuit (ANss).
-, a High@ pulse is output, and the 7-rip prop (FF41) is set at the falling edge of the pulse. This opens the date of the AND circuit (ANsy), and from the AND circuit (AN,,)
A 2048 Hz clock pulse from
Due to the function of the inverter (IN3i), the transistor (BT33) at the frequency of this clock pulse (873%)
The piezoelectric element (109) alternately becomes conductive and non-conductive, and as a result, a warning sound is generated from the piezoelectric element (109), warning the photographer that the expiration date of the film has expired.

When 7 rip and 70 rip (FF = +) are set, the date of the AND circuit (AN41) is opened and the frequency divider (9
The 32H2 clock pulse from 5) is applied to the AND circuit (
The clock pulse is input to the counter (Co1) via the AN41), and the 9th clock pulse is output from the carry terminal and sent through the OR circuit (OR41) to the 7th rip and 70th pulse (FF4).
1) is reset and the AND circuits (AN, , ), (A
The dates of N, , ) are closed, the generation of the warning sound is stopped, and the operation of the counters (COs) is also stopped. Therefore, the warning sound is generated for a certain period of time while the reading of the film data is completed.

FIG. 28 is a modification of FIG. 11427. Switch (S
W 1) is a switch that is closed in conjunction with the photometric switch (SW, ) shown in FIG. This switch (SW31
> is closed, the output of the inverter (IN, 6) becomes “
This causes the AND circuit (AN, .

) is opened, and at this time, if the validity period has expired and the output of the AND circuit (AN, , ) is 'High''', the output of the AND circuit (AN4o) is 'High'''
When the output of the AND circuit (AN, .) rises, the one-limit circuit (O83t) is triggered and the OR circuit (.
OR,. ) is set to 7 rip and 70 rip (FF, , ), and a warning sound is generated for a certain period of time. In the case of this embodiment and the modified example, a warning can be issued even if the photographer leaves the film attached to the camera for a long time and the expiration date of the film has expired. In addition, in this embodiment and the modified example, the output of the clock circuit and the read expiry date data are compared, but the imprinted data is of a type that is set manually, and the setting data and the read expiry date data are compared. You may also do so.

Next, based on Fig. 29 and Fig. 30, a size comparison circuit (
107) Table 1 shows an example of a code for expiration date data. To explain the code corresponding to the outputs of terminals (b-) to (bus) of the shift register (SRI) in Fig. 10, when (b,) is 1, 1990
When the year, (b,) is 0, it is the 1980s, (b,)~
(b+□) is a binary code corresponding to 0 to 9 years,
(bus) to (b6.) are binary codes corresponding to January to December.
”, and the expiration date is September 1986. Then, the data obtained by decoding the year and month data (TD) from the clock circuit (97) with the decoder (DE,) is '
010000011'' and March 1988, that is, the expiration date has expired.

When the terminal (p) rises to 'High' after completion of reading, a 'High' pulse is output from the 729971 circuit (OS,...), and the 2048 H from the frequency divider (95) is output.
One-stop circuit (O
The output of S=s) is taken into the D-7 lip prop (DF, ), and an AND signal of this output and a 2048 Hz clock pulse is output from the AND circuit (AN43). At the rising edge of this pulse, the shift register (SR:)
, (5RS) contains year and month data (T,)~(To) and expiration date data (b,)~ from the decoder (DE+).
(bus) is taken in by terminals (■, ) to (■1), respectively.

Further, the counter (coa+) is reset via the OR circuit (OR4,). Furthermore, the AND circuit (ANl,)
7 rip prop (FF<
a) is set, and the 7 lip props (FF, , ) are reset via the OR circuit (OR5,). When the 7-lip/70-tub (FF43) is set, the date of the AND circuit (AN, s) is opened and a 2048 Hz clock pulse is input to the shift register (5R3), (5R1) and counter (CO++). Then, the shift registers (SR,) and (sRs) sequentially transfer the preset data in parallel to the SO terminal (
5e-real 0output). Exclusive 7 circuit (EOI), AND circuit (AN,
)), (ANl1), in/(-ta(IN3?)
l! Two (F)S.

It constitutes a circuit that determines the magnitude of 1-bit data output from the terminal. Since the outputs of To and ball are both 1, the output of (EOI) becomes “Low”, and then T, =
The date of the AND circuit (AN,) is opened at 1, b, , = o, and a clock pulse is output (WIJ30 diagram AN4).
7), 7 rips and 70 tsubu (FFrs) are set. Next, with T, = 0, b, , = 1, AND circuit (AN
4%), a pulse is output from 7 rip prop (
FF, , ) are reset.

T,=0,b11=1,T,=0,b,. Even when = 1, a pulse is output from the AND circuit (AN4s), but 7
The lip 70 knob (FF<s) remains reset. Then, when T, ;1, b1 = 0, the 7-lip, 70-tub (FF□) becomes the AND circuit (AN, ,
) is set by a pulse from

Therefore, if the data (TD) is larger, 7 ribs/7
The 0 knob (FF4S) is set, and if it is smaller, it is reset (@30 figure FF4S) - and the counter (
Co, , ) outputs the 9th panel from the carry terminal, resets the 7th lip and 70th knob (FF, co) via the OR circuit (OR, , ), and then completes the AND circuit (AN<s )
close dating. In addition, the 779171 circuit (O
83s) is triggered and the pulse is output.
8ss), and at the falling edge of this pulse, the Q output of 7 rip, 70 knob (FF4.) becomes D-7 rip, 70 knob (DF
, ), and a "High" signal is output to the AND circuit (A N 31) (Fig. 27) (Fig. 30).
Figure DF3), and D-7 lip prop (DF, )
, (DF,), 7-rip/70-tube (FF, , ) and counter (CO , a signal corresponding to the magnitude of the two data (TD) and (FDD) is output as 0 or more, which is reset by the reset pulse (PO2) output from the OR circuit (OR, ) in Figure 5. Ru.

FIG. 31 shows a specific circuit example of the film sensitivity display device (27) of FIG. 3. (127) is a data circuit that outputs data corresponding to ASAloo, (129) is ASA4
This is a data output circuit that outputs data corresponding to 00. Then, the data (FSD) read from the data selector (15) in FIG. 3 or the data set by the setting device (13) and the data output circuits (127), (129
) is compared with the data from the comparison circuit ((EO,)~(EO,,
) and (ORss) and (EO,,)-(EO2,) and (ORs+)l, and the data selector (1
When the film sensitivity from 5) is not ASAIOo, 400, the output of the OR circuit (OR63) becomes "High".

When the output of the OR circuit (ORs=) is "High", the output of the NAND circuit (NA,) is
) A clock pulse of opposite phase to the 2Hz clock pulse from the 2Hz clock pulse is output. In this NAND circuit, when the output of the path (NA3) is 'High', the data from the data selector (15) is output from the data selector (133), and '
When the signal is Low'', the data output circuit (13
Blank data from 1) is output. Therefore, the data from the data selector (15) is ASAloo, 40
When the value is not 0, the film sensitivity value is displayed blinking at a frequency of 2 Hz in the liquid crystal dynamic display circuit (135) to which a 128 Hz clock pulse is input. On the other hand, when the output of the OR circuit (OR63) is Low'', that is, the data from the data selector (15) is
or 400, the output of the NAND circuit (NA3) is always High 11'', the data from the data selector (15) is always output from the data selector (133), and the display circuit (135) displays ASAloo or 400. Always displayed.

The switch (SW23) is a liquid crystal dynamic display circuit (
135) is a lighting switch for the display section. When the output of the NAND circuit (NA3) is "Higb", that is,
When the set or read film sensitivity is ASAloo or 400, the date of the AND circuit (AN55) is opened, a 2048 Hz clock pulse is constantly output, and the EL panel (EL3) is constantly illuminated and displayed. On the other hand, if a 2Hz clock pulse is output from the NAND circuit (NA3), the school will illuminate the EL panel (
EL3) blinks in the same phase as the blinking of the display section of the dynamic display circuit (135), and lights up to illuminate only when numbers are displayed.

As described above, in this display device, if the film speed is commonly used (ASAloo, 400), the number will be displayed, and if the film speed is not often used, the film speed value will blink as a number. Is displayed.

Therefore, in the case of a film sensitivity that is not often used, this will serve as a warning that photography will be performed at a special film sensitivity value.

FIG. 32 shows a specific example of the display section for the number of shots of film.

(DE,) is a decoder that transforms into a binary code corresponding to the number of shots of the film based on signals from terminals (b@) and (b) of the shift register (SRI) shown in FIG. Table 2 shows an example of the input/output relationship of the decoder (DE,)
Shown below.

When the reading is completed and the terminal (p) becomes "High"', the 6-bit data from the decoder (DE, ) is preset in the down counter (CO13) at the rising edge of this signal. Then, each time the film is advanced one frame, the terminal (P
Based on the pulse from O2), the down counter (C
The contents of o, , ) are subtracted by one. Therefore, the counter (
The contents of CO13) are data corresponding to the remaining number of shots. The decoder (DEff) is a counter (COl
When the output of the camera is "000101" ~ "ooooooo", that is, when the remaining number of shots is 5 to 0, the output is "High".
” signal is output.

(143) is a data selector, which is a NAND circuit (NA
When the output of P) is "High", the data (FCD) from the film counter (Cot) shown in Figure 5 is output, and when the output of the NAND circuit (NAs) is "Low", the data for blank display is output. Data output circuit (141) to output
Output the data from. Therefore, the terminal (p) is 'Hi'
gh” and the number of remaining shots becomes 5 or less, and the AND circuit (
When the output of ANiy) becomes High'', a clock pulse with a frequency of 2Hz is output from the NAND circuit (NA, ), and the numerical value of the number of shots is displayed blinking on the display device (DI, ). When the output of the circuit (ANsy) is “Low”, the output of the NAND circuit (NAs) is “Hi”
gh'' remains, the data (FCD) of the number of shots of the film is constantly output from the data selector (143), and the number of shots is displayed as is on the display wave f! (DI,).

As described above, in this embodiment, when the number of remaining shots falls below a predetermined value, the numerical value of the number of shots is displayed blinking to warn that the remaining number of shots is small.

(AH), (CH), (YH), shown in Figure 1
It is conceivable to provide a signal hole indicating film type data in addition to the (MH) data. The type of film is A type (tungsten type, color temperature 340).
0K), B type (tungsten type, color temperature 32
00K), D type (daylight type, color temperature 550)
0K), where A type is 10" and B type is"
A case in which data of 01'' and D type is set to 00'' will be explained next.

The A type or B type is usually used indoors, but when indoors, it is possible to accidentally take pictures using the O-point. By the way, the strobe light source has a color temperature matching that of D-type film, so it can be used with A-type or B-type film.
The circuit shown in FIG. 33 solves the problem that when photographing with a strobe using a type of film, the coloring of the film becomes very unnatural.

First, the signal hole increases by 2 bits, so the shift register in Figure 10 has two additional terminals, terminals (b+,) and (b, a), and from terminals (bll) and (bIIl), 1 in the A type.
0'', B type outputs data 01, and D type outputs 00'' data. Therefore, the output of the exclusive OR circuit (EO31) is of the tungsten type (“10
``, 'Of''), it becomes ``High'', and when the daylight type (00''), it becomes ``Low''.

In FIG. 33, (137) is a strobe power supply circuit;
(Xe) is a xenon tube, (139) is a tri-circuit, (
CM) is the main capacitor. (Ne) is a neon tube,
When the charging voltage of the main capacitor (CM) reaches a predetermined value, a current flows and a charging completion signal is sent from the resistor (R3,) to the terminal (
J32) and (Jl1) are input to the camera side. Note that the terminals (J1+) and (J2□) are the terminals that transmit the signal of the X contact (Sx) on the camera side to the strobe side.
, 1), (Jl,) is a terminal that shares the ground on the camera side and the strobe side.

When reading is completed, terminal (p) becomes “High”,
When a tungsten type film is installed and the output of the exclusive O7 circuit (EOj,) becomes "High" and a charge completion signal is input from the terminal (J3.), the AND circuit (ANs+) The output becomes "High" and the output of the inverter (IN3*) becomes "Low". When the switch (SV40), which opens and closes in the same phase in conjunction with the photometric switch (SW+) in the fltJ3 diagram, is closed, the inverter (IN3*) output becomes "Low". The output of (IN,,) becomes "High"', and the output of AND circuit (AN) becomes "High"'.

, ) date is opened and from the AND circuit (ANss) is 2
A Hz clock pulse is output and an OR circuit (ORa5
) , ) The light emitting diode (LE, ) blinks via the transistor (BT-s), giving a warning that a tungsten type film is attached while flash photography is being performed. Since the transistors (BT, , ) are controlled to be conductive or non-conductive in the same phase as the transistor (BTl) in Figure 3, the output of the inverter (IN41) remains "High" until the release starts and the exposure control is completed. It remains as it is.

When a D type film is installed, the output of exclusive O7 circuit (EOj1) becomes "Low" and the output of inverter (IN3) becomes "High". Therefore, the output of terminal (J31) When a “High” charge completion signal is input from
gh'', the light emitting diode (LEy) lights up via the OR circuit (ORss) and the transistor (B''r-i) to indicate the completion of charging.

Therefore, in the embodiment of FIG. 33, the tungsten type (
When a charge completion signal is input from the strobe when a type A or B type film is loaded, the light emitting diode (LE, ) flashes as a warning, and a daylight type (D type) film is loaded. When the charging completion signal is inputted, the light emitting diode (LE) lights up.

FIG. 34 is another embodiment of a film type warning.

When the reading is completed and the terminal (p) becomes "Higl+", the liquid crystal display section (143) displays the DSA,
One character of B is displayed.

In addition, when using the tungsten type, the output of exclusive output circuit 7 (EO, , ) becomes 'High', the switch (5W33) is closed, and the inverter (IN41)
) becomes “High”, the AND circuit (ANgy
) becomes “High”. As a result, 2048H2 and 2Hz clock pulses are output from the AND circuit (ANss), and the inverter (IN, 3), )
A warning sound with a frequency of 2 Hz is output by a circuit composed of transistors (BT, . . . ), (BT4.), Zener diodes (ZD3), and piezoelectric elements (145).

Therefore, in this example, the type of film installed (A, B.

D) is displayed on the display device, and in the case of the tungsten type (A, B), a warning sound is generated in conjunction with the closing of the photometric switch. Note that the switch (SW3S) is a switch that is manually opened when the warning sound is not required.

As a modification of FIGS. 33 and 34, a light receiving element for measuring the color temperature of the light source may be provided to measure the color temperature, and a warning may be issued if the measured value and the read film type data do not match. Alternatively, a compatible filter may be automatically inserted into the optical path system.

As shown in Figure 1, the film data is provided at the leading end of the film, and after reading this data, the part of the film where the signal hole indicating the data is provided is wound onto the spool. Therefore, it is necessary to store the read data.

Therefore, as shown in FIG. 3, the data reading shift register (SR,) shown in FIG.
E,) is designed to constantly supply power. but,
In this case, there is a problem that if the battery (E,) is replaced with the film attached, the data stored in the shift register (SR,) will be lost. 35th
The figure shows an embodiment that solves these problems.

In FIG. 35, (9) is the block (
9), and a shift register (SR, ) (FIG. 10) for reading and storing data is provided inside. (
151) is a block diagram showing circuits other than block (9) in FIG. When the power battery (El) is installed, the switch (S
W3s) is closed and the switch (SWay) is opened. Therefore, the block (151) has switches (SWjs
), and the block (9) has a power battery (E
, ) directly from the (CS) is a backup capacitor, which is charged from the battery (E,) via Gouio 1' (D2.3. When the battery (E,) is removed, the switch (SW31) is opened. The switch (SW3?) is closed. As a result, the block (9) is supplied with power from the backup capacitor (CS) via the switch (SW, A). On the other hand, the block (151) is connected to the diode. (Dz3), power is not supplied from the capacitor (CS), and excess current consumption can be prevented.

Therefore, after removing the battery, power is supplied to the block (9) by the capacitor (C8), so the data stored in the shift register (SR,) is transferred to the capacitor (C8).
If you replace the battery before the charge in the CS) is consumed, it will never run out.

FIG. 36 shows a modification of the part related to film attachment shown in FIGS. 5 and 6. In the embodiment shown in FIGS. 5 and 6, winding is performed at low speed for a certain period of time, and when the camera back is closed during winding at low speed, winding at low speed is continued.
As soon as the low speed winding was finished, the high speed winding started. In this modification, a fixed amount of low-speed winding is performed, and as soon as the back cover is closed during low-speed winding, high-speed winding is started.

When the film is attached, the output of the inverter (INy) rises to "High" and a "High" pulse is output from the 779171 circuit (O8,). At the rising edge of this pulse, 7 and 70 dips are set, and at the falling edge of this pulse, the 722171 circuit (O8I+) is triggered and a "High" pulse is output. This pulse is output from the terminal (q) via the OR circuit (OR,), and winding of the film starts, and 7 rip props (
FF, ) is set and the transistor (B T +s
) becomes conductive and power supply to the circuit (31) starts. At this time, the Q output of the 7-rip, 70-tube (FF3) is “Lo
w”, the date of the AND circuit (ANs) is interpolated and the pulse output to terminal (q) is not output to terminal (1), and the thyristor (SCR, ) in the MS3 diagram does not conduct, so it is slow. As the film moves, the pulse from the Par 7 Olase burnishing output from the Par7 Oleshi heat detecting circuit (33) is sent to the counter (COO) via the AND circuit (AN, □). Then, when the -constant par 7 oresian a is counted, a "High" pulse is output from the counter (COo), and at this time, the back cover is opened and the inverter (INl
, ) is "High"', this pulse is output from the AND circuit (AN+g) to the terminal (LWE, ), and the winding operation is stopped. Furthermore, 7 lip/70 knob (FF1.) is set and AND circuit (ANI4) is set.
date is opened and the par 7 orex detection circuit (33
), the pulses from each circuit (AN, ), (COI
), (AN9), and (37). Furthermore, after the date of the AND circuit (AN, 2) is closed, the pulse from the perforation detection circuit (33) is processed by the counter (
CO,) is not input.

When winding at low speed is completed and the photographer closes the camera back, the output of the inverter (IN,) rises to "High" and goes through the OR circuit (OR7°) to 7 rip, 70 rip (FF
, ) is reset, and the output of the AND circuit (ANl, ) rises to "High", causing the one-shot circuit (O81
A high pulse is output from ゜゜), and the OR circuit (O
Since it is output to terminal (q) via H2) and 7 lip/70 knob (FF3) is reset,
This pulse is passed through an AND circuit (ANs) to a terminal < 1
It is also output from 5. Therefore, FIG. 5, v! As described in Figure J6, high-speed empty feeding will be performed until the morning meal.

Also, if the back cover is closed while winding is being carried out at low speed, the output of the inverter (IN@) will be 'H'.
As mentioned above, the pulse from the start and stop circuit (O8, .) is output to the terminal (L) via the AND circuit (AN), and the winding is started from low speed to high speed. ) immediately.

After a certain amount of film has been transferred, the counter (
When a “Higb” pulse is output from COo), 7 lip and 70 lip are set and the AND circuit (ANl4)
A date will be held. *From the counter (Coo)'
Even if a “High” pulse is output, the back cover is closed and the output of the inverter (IN,,) is “Low” and the terminal (L) is output.
A "High" pulse is not output from WE, ), and high-speed winding continues, and high-speed dry feeding is performed until the morning rice is finished, and then the dry feeding is stopped. In addition, 7 lips and 70 tubes (
FF. ) is set and before the blank feed stops, in the case of a film provided with a signal hole, reading is performed as described above. In addition, the Q output of the 7-lip/70-tub (FF7) is displayed on the display section (D I 7) in Figure 6.
, /7 times M(N03) , (N05)+, : Sent.

Table 1 ■1!11” As explained above, by using the film sensitivity display device of the present invention, when a film sensitivity that is not often used is set, it is possible to check whether the film sensitivity setting is incorrect. This can be done by the photographer, and it is possible to prevent photography from being performed with the wrong film sensitivity setting. Furthermore, when a film with a sensitivity that is not often used is used, it is possible to warn the photographer that a special film is being used.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a film with film data set, Fig. 2 is an enlarged view of the signal hole portion of Fig. 1, and Fig. 3 shows the entire camera to which this invention is applied. Figure 4 is a circuit diagram of a specific example of the release circuit (5) in Figure 3; Figures 5 and 6 are circuit diagrams of a specific example of block (9) in Figure 3; Figure 7 is a perspective view showing the specific configuration of the Par 7 Olesi 1 detection unit and the signal hole detection unit, Figure 8 is a plan view of the detection unit in Figure 7 viewed from the camera back side, and Figure PJ9 is the A cross-sectional view taken along the dashed line 1-I in Figure 8.
, a circuit diagram of a specific example of the signal hole detection section (35) and the reading circuit (37), FIG. 11 is a time chart showing the waveforms of each part of the circuit in FIG. 10, and FIG. Fig. 13 is a circuit diagram of the circuit for detecting the bar 7 olecitane of the film shown in Fig. 12, and Fig. 14 is the waveform of each part of the circuit in Fig. 13. 15 is a perspective view showing the detection section of the film shown in FIG. 12, FIG. 16 is a sectional view of a camera to which the detection section shown in FIG. Figure 18 is a diagram showing the output waveforms of each part of the circuit in Figure 17. Figure 19 is a circuit diagram of the detection circuit connected to the detector in Figure 15. Circuit diagram, Figure 20 is a diagram showing the waveforms of each part of the circuit in Figure 19, Figure 21, Figure 22, Figure 23, and Figure 24 explain the effect of the optical mask of the par 7 Olesian detection section. Figure 25 is a graph for explaining the effect of the optical mask, Figure 26 is a cross-sectional diagram showing the specific configuration of the par 7 range detection section, Figure 27 is the data of Figure 3. A circuit diagram of a specific example of the imprinting circuit (21), a clock circuit (23), and an expiration warning circuit (25), FIG. 28 is a circuit diagram of a modification of the expiration warning circuit of FIG. 27, and FIG. 29 is a circuit diagram of a modification of the expiration warning circuit of FIG. Fig. 27 is a circuit diagram of a specific example of a circuit that determines the magnitude of the two pieces of data; Fig. 30 is a time chart showing the waveforms of each part in Fig. 29; Fig. 31 is the film sensitivity display section of Fig. 3. A circuit diagram of a specific circuit of (27), Fig. 32 is a circuit diagram of a modified example of the film exposure number display section shown in Fig. 5, tJIi33 is a circuit diagram of a film type warning circuit,
Figure 34 is a circuit diagram of a modified example of the film type warning circuit, Figure 35 is a circuit diagram of a modified example of the power supply circuit shown in Figure 3, and Figure 36 is a circuit diagram of a modified example of the film type warning circuit. FIG. 6 is a circuit diagram of a modified example of a portion related to attachment. 19・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・First output means 135・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
Display means 127.129・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・Second output means EO, ~EO2+-0Rss~0Rai...
・Discrimination means N^,, 131, 133...
・・・・・・・・・・・・・・・・・・ Display control means Applicant Minolta Camera Co., Ltd. Figure 1 11, 2 Figure 7 Figure 148 ◆υ IIIS Figure 1N25 1N
27 Figure 14 Figure 15 Figure 18 Figure 20 F1 Figure 2j Figure 22 Figure 23・d3; 1111111$24. Figure 1128 Figure $30 Figure DF3'
II 25 Figure distance fiber d (mm) Figure 26 C5

Claims (4)

[Claims] (1) a first output means for outputting film sensitivity data; a display means for displaying film sensitivity based on the film sensitivity data; and a second output means for outputting predetermined film sensitivity data; determining means responsive to the first and second output means for determining whether or not film sensitivity data output by the first output means is the same as the predetermined film sensitivity data; and display control means for changing the display form of the display means depending on whether the film sensitivity data outputted by the first output means is different from the predetermined film sensitivity data. Display device. (2) The film sensitivity display device according to claim 1, wherein the predetermined film sensitivity is ASA100. (3) The film sensitivity display device according to claim 1 or 2, wherein the predetermined film sensitivity is ASA400. (4) When the film sensitivity data outputted by the first output means is the same as the predetermined film sensitivity data, the display control means lights up the film sensitivity display by the display means, and both The film sensitivity display device according to any one of claims 1 to 3, wherein the film sensitivity display blinks when the film speed is different.