JPH0968754A - Image display device control method - Google Patents

Abstract

(57) Abstract: A subject 2203 having a large number of image frame parts is conveyed to a subject illumination part 2202, a required image frame part is searched for in the object illumination part, and image information of the image frame part is imaged. In the image display device for projecting and displaying on the display unit 2209, a troublesome flow moving image is displayed on the image display unit 2209 during object transportation without using a mechanical shutter, thus increasing cost and generating operating noise. To prevent this. SOLUTION: The subject illumination lamp 2201 is controlled according to the set value of the subject transport speed setting means, or the subject illumination lamp 2201 is controlled according to the value detected by the subject transport speed detection means. Alternatively, in the automatic search execution mode of the required image frame portion, the subject transport speed is predicted, and the subject illumination lamp 2201 is controlled based on the prediction result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a subject such as a microfilm having a large number of image frames to a subject illuminating unit such as a microfilm reader or a reader printer and the like to obtain a desired image frame. The present invention relates to a control method for an image display device which positions a search position on an illumination unit and projects and displays image information of the image frame unit on the image display unit.

[0002]

2. Description of the Related Art FIG. 8 is a schematic view of a roll microfilm reader or reader / printer mechanism and a control system as an image display device as described above.

Reference numeral 1 denotes a roll microfilm as an object having a large number of image frames, which is wound around a rewind reel 2 in a film cartridge 3 and accommodated therein.

The film cartridge 3 is mounted on the cartridge setting portion of a film carrier (film transporting device) by engaging the reel 2 with the rewinding shaft 4.

Reference numeral 11 is a film take-up reel, which is engaged with and attached to a take-up shaft 12.

The film 1 wound on the rewinding reel 2 in the film cartridge 3 is pulled out from the leading end side (lead tape portion), and the guide rollers 5 → 6 → the guide roller pair 7 → two upper and lower platen glasses Between 8 and 9 →
The film is wound around the take-up reel 11 by passing through the film traveling path of the guide roller pair 10 and being wound on the reel 11. This film transfer operation is generally performed automatically (auto loading).

The take-up reel 11 is driven to rotate in the film take-up direction by driving the shaft 12 by turning on the motor M2, so that the film 1 is fed from the rewind reel 2 side to the take-up reel 11 side. It is sent (normal transport).

The rewind reel 2 turns on the motor M1.
When the shaft 4 is driven to rotate in the film rewinding direction, the film 1 is fed (reversely conveyed) from the take-up reel 11 side to the rewinding reel 2 side in reverse of the above path.

The upper and lower two platen glasses 8 and 9 are arranged in the film illuminating section, and have the function of sandwiching the film 1 in a sandwich to provide flatness. When the film 1 is fed, the glass 8 and 9 are opened and the sandwiching of the film 1 is released, which is controlled by a solenoid (not shown) or the like.

Reference numeral 13 is a film illumination lamp such as a halogen lamp, and a condenser lens 14 which is a condenser lens.
The lower surface of the lower glass 9 of the platen glass 8/9 is illuminated via.

The motors M1 and M2 for driving the rewinding shaft 4 and the winding shaft 12 are driven and controlled by a carrier control circuit 21. The carrier control circuit 21 is controlled by the CPU circuit 25.

LEDs 15 and 16 are arranged in a film traveling path between the guide roller 6 and the guide roller pair 7.
And a mark detecting means having a light receiving element 16. LED
Reference numeral 15 denotes a light source for irradiating a search mark portion provided on the film 1 corresponding to each image frame portion, and a light receiving element 16
Receives the light of the LED 15 which is intermittently caused by the passage of the search mark portion when the film 1 is forwardly or backwardly transported, and thereby counts the search marks and identifies the type.

That is, the output of the light receiving element 16 is input to the sensor amplifier circuit 22. The output of the circuit 22 is a binary circuit 23.
To enter. The binary circuit 23 compares the input from the sensor amplifier circuit 22 with the slice level signal input from the CPU circuit 25 to perform binarization, and inputs it to the mark discrimination circuit 24. The mark discriminating circuit 24 processes the signal output from the binary circuit 23 to discriminate the mark, and the CPU circuit 2
Output to 5

Reference numeral 26 is a slit disc provided concentrically with one of the rollers of the guide roller pair 7, and when the guide roller pair 7 rotates in accordance with the movement of the film 1, the slit disc 26 also guides itself. It rotates in synchronization with the rotation of the roller pair 7. Reference numeral 27 denotes a photo interrupter combined with the slit disk 26, which acts as a film encoder together with the slit disk 26 and sends data such as the transport speed of the film 1 to the CPU circuit 25 as pulse information.

28 is a keyboard (operation panel), and 29
Is a switch such as a numeric keypad, and the instruction of the search address is input from here. Reference numeral 30 denotes a display device such as an LED or LCD, which displays the value of the odometer, the search address, the state of the automatic search device, and the like. Reference numeral 31 is a control knob that allows the automatic retrieval device to manually carry the film. By manually operating the control knob 31, the film 1 can be forwardly or reversely transported at a desired speed.

In the case of the automatic search mode of the required image frame portion, when the required image frame portion address is input by the switch 29 of the keyboard 28 and the search start switch is pressed, the CPU circuit 25 causes the platen glass. 8 and 9 are controlled to be in an open state, and whether the image frame portion is on the rewind reel 2 side or the take-up reel 11 side with respect to the position of the platen glass 8 and 9 which is the film illumination portion. The carrier control circuit 21 is controlled so that the film 1 is forwardly conveyed in the former case and is reversely conveyed in the latter case by the calculation / judgment, and the motors M1 and M2 are selectively rotated in a predetermined control manner. Turn on at speed.

During the forward or reverse transport of the film 1, the mark detection means 15 and 16 count and determine the type of the search mark of each image frame portion sequentially passing through the means position, and the information is stored in the CPU. Input to the circuit 25. Further, data such as the film transport speed is also used as pulse information from the film encoders 26 and 27 as the CPU circuit 2.
Enter in 5.

Based on the input data, the CPU circuit 25 stops the forward or reverse feeding of the film when the required image frame portion is positioned corresponding to the platen glass 8 or 9 which is the film illuminating portion. Is controlled to turn off the motor M1 or M2.

In the case of manual search, the motors M1 and M are operated by operating the control knob 31 of the keyboard 28.
2 is selectively turned on to normally or reversely convey the film 1 at a desired speed to bring a desired image frame portion to the position corresponding to the platen glass 8 or 9 which is the film illumination portion and stop the film conveyance.

Platen glass 8 or 9 in which the required image frame portion is the film illumination portion in the automatic retrieval mode or manual retrieval
When the film conveyance is stopped at the position of and the platen glasses 8 and 9 are closed.

Then, the illumination transmitted light by the film illumination lamp 13 of the retrieved image frame portion is projected by the projection lens 17.
Then, the image information of the image frame portion is enlarged and image-projected and displayed on a reader screen surface (not shown) which is an image display portion (reading portion) through a reader optical system (not shown).

In the case of a reader printer,
When a copy key is pressed to obtain a copy of the image information, the optical system ahead of the projection lens 17 is switched from the reader optical system to the print optical system not shown, and the print mechanism not shown operates. Copy is executed.

In such a conventional apparatus, the film illuminating lamp 13 (subject illuminating lamp) is an O power source for the apparatus.
It lights up in N and continues to light up until the device power is turned off.

Therefore, even during the normal transport / reverse transport of the film 1 in the process of searching for the required image frame portion, even during the loading and rewinding, the image frame portion successively passing through the platen glasses 8 and 9 as the film illuminating portion. It is illuminated, and it is displayed as a moving image on the surface of the reader screen, which is the image display unit, to make the user feel annoyed.

Therefore, as shown in FIG. 8, a mechanical shutter 18 for opening and closing the projection lens 17 is provided vertically above the projection lens 17 to convey the film 1 in the automatic search mode and the rewinding. Shutter 18 inside
Is closed to block the light entering from the projection lens 17 into the reader optical system, and to prevent the above-mentioned troublesome flow moving image from being displayed on the reader screen surface in the meantime. That is, during the generation of the signal during the search of the target image frame portion and the generation of the rewind signal, the CP
Instructions are sent from the U circuit 25 to the motor 19 for opening and closing the mechanical shutter 18, and the shutter 18 is closed.

[0026]

However, in such a conventional example, the disposition of the dedicated mechanical shutter 18 and the motor 19 has been one of the causes of the cost increase.

Further, the mechanical shutter 18 is annoying because the opening / closing operation sound is jarring.

Further, in the conventional apparatus, the shutter 18 is operated by the signal during the search of the target image frame portion and the rewind signal only in the automatic search mode and the rewind.
Is operated to close the shutter 18 when the film is manually loaded by operating the control knob 31.
Did not close, and the annoying flow movement image was displayed on the reader screen surface.

In view of the above, the present invention does not use a mechanical shutter, and therefore increases the cost and generates no operating noise, and causes a troublesome flow on the reader screen surface (image display section) during film loading (subject transportation). It is intended to prevent the moving image from being displayed and to prevent the troublesome moving image from being displayed on the leader screen surface even when the film is manually loaded by operating the control knob 31.

[0030]

The present invention is a method for controlling an image display device, which is characterized by the following means.

(1) A subject having a large number of image frame parts is conveyed to the object illumination part, a required image frame part is located at the object illumination part, and the image information of the image frame parts is projected and displayed on the image display part. In the image display device according to the present invention, a method for controlling the image display device is characterized in that the object illumination lamp is controlled according to the set value of the object transport speed setting means.

(2) A subject having a large number of image frame parts is conveyed to the object illumination part, a required image frame part is located at the object illumination part, and the image information of the image frame parts is projected and displayed on the image display part. In the image display apparatus according to the present invention, the method for controlling the image display apparatus is characterized in that the lamp for illuminating the object is controlled according to the value detected by the object transport speed detecting means.

(3) A subject having a large number of image frame parts is conveyed to the object illumination part, a required image frame part is located at the object illumination part, and the image information of the image frame parts is projected and displayed on the image display part. In the image display device, the control method of the image display device is characterized in that the object transport speed is predicted in a desired image frame portion automatic search execution mode, and the object illumination lamp is controlled based on the prediction result.

(4) A subject having a large number of image frame parts is conveyed to the object illumination part, a required image frame part is located at the object illumination part, and the image information of the image frame parts is projected and displayed on the image display part. In the image display device, in the automatic search execution mode of the required image frame portion, the frame from the image frame portion currently located in the mark detection means of the image frame portion or the subject illumination portion to the required image frame portion to be searched for. A method for controlling an image display device, characterized in that a lamp for illuminating an object is controlled according to the number.

(5) A subject having a large number of image frame parts is conveyed to the object illumination part, a required image frame part is located at the object illumination part, and the image information of the image frame parts is projected and displayed on the image display part. The image display device has a means for controlling the moving speed of the projected image on the image display unit by controlling the subject conveying means according to the projection magnification of the image frame portion of the subject with respect to the image display portion. A method for controlling an image display device, comprising: controlling a subject illumination lamp according to a controlled moving speed of a projected image on the image display unit.

(6) The control of the lamp for illuminating the object is characterized in that the lamp is turned off when the object is conveyed at a predetermined speed or more, or the light emission amount of the lamp is reduced below the steady state. The method for controlling the image display device according to any one of (1) to (5).

(7) The subject is a roll microfilm or a microfish film, the subject transport means is a roll film carrier or a fish film carrier, and the device is a microfilm reader or a reader printer (1) ) To (6), the control method of the image display device according to any one of.

That is, the present invention is as follows. It is possible to prevent annoying flow moving images from being displayed on the image display unit during the transportation of the object by controlling the lighting of the object illumination lamp to be turned off during the transportation of the object or to reduce the light emission amount of the lamp below the steady state. Since it is a dark image that does not appear, the same effect as when using a mechanical shutter is obtained, and there is no problem of cost increase and operating noise as in the case of using a mechanical shutter.

By turning on the lamp for illuminating the subject while the conveyance of the subject is stopped, the image frame portion located in the illuminating portion of the subject is projected and displayed on the image display portion.

.. By controlling the subject illumination lamp according to the set value of the subject transport speed setting means or according to the value detected by the subject transport speed detecting means,
It is possible to prevent annoying flow moving images from being displayed on the image display unit even during conveyance of a subject by manual operation.

.. Even when the object is being transported, if the transportation speed is a low-speed transportation state that is lower than a certain reference speed, the illumination lamp for the object illumination is not turned off or controlled to the lighting state without controlling the light emission amount, so that the flow slowly to the image display section. The so-called "flow reading" can be performed on the image frame portion displayed while moving.

In the automatic search mode, the object transport speed is controlled to be low when the target search image frame portion is close to the object illumination portion, and accordingly, the object illumination lamp is turned on and the image display portion is slowly moved. It is possible to recognize that the target search image frame portion is closer to the subject illumination portion because the image frame portion is being displayed while moving.

[0043]

BEST MODE FOR CARRYING OUT THE INVENTION

(1) Overall Schematic Configuration of Example of Reader Printer FIG. 1 is an external perspective view of a microfilm reader printer to which the present invention is applied, and FIG. 2 is a vertical side view model diagram of the apparatus.

In FIG. 1, reference numeral 2101 is a microfilm reader printer main body.

Reference numeral 2102 denotes a roll film carrier, which is built in the reader / printer main body 2101.
Alternatively, it is detachably mounted at a predetermined position and is mounted and set at a predetermined position for use.

Reference numeral 2103 is a reader / printer operation unit for the user of the apparatus to give an operation instruction to the reader / printer main body.

Reference numeral 2104 is a roll film carrier operation unit for the user of this apparatus to give an operation instruction to the roll film carrier 2102.

Reference numeral 2209 denotes a reader screen as an image display unit arranged on the front surface of the reader printer body.

Reference numeral 2204 denotes a projection lens barrel as a projection means, which is detachably attached to a predetermined position of the reader / printer main body 2101 and is mounted and set in a predetermined manner for use.

The reader / printer main body 2101 and the roll film carrier 2102 are electrically connected to each other, and the reader / printer main body 21 is read from the reader / printer operation unit 2103.
01, operation instructions can be given to some functions of the roll film carrier 2102.

Similarly, the roll film carrier operation unit 21
It is also possible to give an operation instruction from 04 to a part of the functions of the reader / printer main body 2101 through the roll film carrier main body 2102.

In FIG. 2, 2201 is a lamp for film illumination (lamp for illuminating an object), 2202 is a condenser lens as a light condensing means, 2203 is a roll microfilm (object), 2204 is a projection lens barrel (zoom lens), 2205 is an image rotating device, 2206 is a first reflecting member, 2207 is a second reflecting member, 2208 is a third reflecting member group, 2209 is a reader screen, 2210 is an image forming unit (printing mechanism), 2211 is a slit plate, 22
Reference numeral 12 is a photosensitive member as a recording medium.

The image forming unit 2210 is, for example, a transfer type electrophotographic printing mechanism, and since the printing mechanism is well known, its detailed description is omitted.

Generally, a lamp such as a halogen lamp or a fluorescent lamp is used as the film illuminating lamp 2201. The image rotating device 2205 uses a prism that is a translucent member. A metal mirror or a glass mirror is used for the reflecting members 2206 to 2208. The reader screen 2209 is generally composed of a diffusion plate.

(2) Image frame search The roll film carrier 2102 holds the roll microfilm 2203 as a subject, and conveys it in the forward and reverse directions between the winding section and the rewinding section, on the upper surface of the condenser lens 2202 which is the film illuminating section. The film 2203 is conveyed by the film 2203 and the target image frame portion among the many image frame portions photographed and recorded along the length of the film is automatically illuminated by means of film retrieval or manual illumination. By stopping the film transport by moving the film to the search position, the film illuminating unit 2202 illuminates the target image frame part which is searched and stopped. An open / close platen glass (8, 9) sandwiching the film is provided between the condenser lens 2202 which is the film illuminating section and the projection lens barrel 2204, but it is omitted in the figure.

The light emitted from the film illumination lamp 2201 is condensed by the condenser lens 2202, and illuminates the image frame portion of the film 2203. The light transmitted through the image frame portion enters the projection lens barrel 2204.

(3) Reader Mode The light entering the projection lens barrel 2204 passes through the image rotating device 2205 → first reflecting member 2206 held at the first angle shown by the solid line → second reflecting member 2207 (reader). An image is formed on the back surface of the reader screen 2209 via the optical system), and image information is enlarged and projected on the image frame portion. Since the reader screen 2209 is a diffusion plate, the magnified and projected image information can be viewed and read from the outside of the reader screen 2209.

By rotating the image rotating device 2205, the image enlarged and projected on the reader screen 2209 can be rotated around the optical axis by a desired angle to adjust the rotation angle posture of the projected image on the reader screen.

(4) Print Mode When a copy of the image information of the image frame portion enlarged and projected on the reader screen is output in the reader mode, the print mechanism 2210 is activated by pressing the copy key, and the first reflecting member is activated. 2206 is oscillated from the first angle shown by the solid line to the second angle shown by the broken line at a predetermined rotational angular velocity, whereby the light flux emitted from the image rotation device 2205 is scanned, and the scanning light is scanned by the third reflecting member group 2208. → The photosensitive member 2212 is enlarged and projected through the path of the slit plate 2211 (printing optical system), and the photosensitive member 2212 is slit-exposed to form an image.

Since the optical path length from the first reflecting member 2206 to the reader screen 2209 and the optical path length from the first reflecting member 2206 to the surface of the photosensitive member 2212 of the printing mechanism 2210 are substantially equal, the first reflecting member 22.
As a result of the swing of 06, a part of the image information of the image frame portion of the film illumination portion is enlarged and imaged on the surface of the photosensitive member 2212. Further, when the first reflecting member 2206 swings, the slit of the slit member 2211 scans apparently.

When the photosensitive member 2212 is a photosensitive drum, the photosensitive drum rotates in synchronism with the swing of the first reflecting member 2206, so that all the image information of the image frame portion is on the photosensitive drum surface due to the principle of slit exposure. Is projected enlarged to
An electric latent image of the projected image is formed on the surface of the photosensitive drum. The electric latent image formed on the photosensitive drum is visualized by toner development, and the second recording medium (transfer material) 2213.
The image is formed on the surface in a visible state.

Generally, the microfilm reader printer having the above configuration is called an analog type microfilm reader printer.

On the other hand, after the image information of the microfilm 2203 is read by using a photoelectric conversion element such as a CCD on the photosensitive member 2212, the output of the element is converted into a digital signal and image processing is performed, and then various formats are output from the output means. There is also a microfilm reader printer configured to obtain an output of a magnified projection image of the read image information. Generally, such a microfilm reader printer is called a digital type microfilm reader printer.

(5) Roll Film Carrier 2102 FIG. 3 is a perspective view mainly showing the transport system of the roll microfilm 2203 as an object in the internal structure of the roll film carrier 2102.

2301 is a roll microfilm 220
The winding-side driving unit 2303 of FIG. 3 is a winding shaft, and the rotational force of the driving unit 2301 is transmitted to the winding shaft 2303 via the speed transmissibility changing unit 301.

Reference numeral 2302 denotes rewinding side driving means, 2304 denotes a rewinding shaft, and the rotational force of the driving means 2302 is transmitted to the rewinding shaft 2304 via the speed transmissibility changing means 302.

2305 is a take-up reel, 2306 is a film cartridge, 2307 is a take-up roller, 23
Reference numeral 08 is a rewinding side roller, 2309 is a film conveying speed detecting means (subject conveying speed detecting means), 2310 is a mark detecting means (image information frame searching means), and 2311 is a film manual conveying means (manual knob).

When the take-up shaft 2303 is driven, the take-up reel 2305 is rotated, and the film 2 wound on the rewind reel in the film cartridge 2306 is wound.
203 is wound up on the winding side reel 2305, and forwardly travels along the path of the rewinding side roller 2308 → the condenser lens 2202 upper surface side (film illuminating section) → the winding side roller 2307.

On the contrary, when the rewinding shaft 2304 is driven, the reel in the film cartridge 2306 is rotated and the film 2203 wound on the take-up reel 2305 is taken up by the reel in the film cartridge 2306. Then, the rewinding side roller 2307, the upper surface side of the condenser lens 2202 (film illuminating section), and the rewinding side roller 2308 are reversely conveyed.

The above-described film forward / reverse transport / transport speed is controlled by operating the film transport speed setting means (subject transport speed setting means) 2404 provided in the roll film carrier operating section 2104 (FIG. 1).

(6) Film Conveyance Speed Setting Means 2404 FIG. 4 is a drawing showing an example of the structure of the film conveyance speed setting means (subject conveyance speed setting means) 2404. 33
01 is an input knob, 3302 is a knob angle detecting means, 330
Reference numeral 7 is a knob rotation direction detecting means.

As the knob angle detecting means 3302, a resistor 3303 to which a voltage is applied and a slider 330 which slides on the resistor 3303 in accordance with the rotation of the input knob 3301.
A sliding variable resistor consisting of 4 can be used.

Further, the knob rotation direction detecting means 3307 includes
It is possible to use a combination of a shading plate 3305 that rotates together with the input knob 3301 and a sensor 3306 that detects the state of the shading plate 3305. The input knob 3301 is set in the forward rotation direction or in the reverse rotation direction from the stop position. It is possible to determine whether it is set to.

Regarding the knob angle detecting means 3302, when the input knob 3301 is rotated to change the angle, the slider 33 is moved.
The voltage applied to 04 changes. That is, the slider 3304
The voltage of represents the angle of the input knob 3301 as it is.

Roll film carrier control means 2402
(FIG. 6) detects the voltage of the slider 3304 and at the same time,
By being configured to detect the signal from the sensor 3306, the roll film carrier control means 2402 can grasp the angle and direction of the input knob 3301, that is, the film transport speed set value desired by the user of this apparatus.

Roll film carrier control means 2
Reference numeral 402 drives and controls the roll film carrier 2102 so as to convey the film 2203 based on the value set by the subject conveying speed setting means 2404.

(7) Film transport speed detection means 2309 Film transport speed detection means (subject transportation speed detection means)
Reference numeral 2309 denotes a unit that detects the transport speed and the transport direction of the film 2203 that is actually being transported.

In this example, as shown in FIG.
It is a photo encoder attached to 07. The winding side roller 2307 and the rewinding side roller 2308 are the film 220.
It rotates at the same speed as the moving speed of 3.

Therefore, in this example, the detection means 2309 detects the rotation speed and the rotation direction of the winding side roller 2307 associated with the forward and reverse conveyance of the film 2203, and the roll film carrier control means 2402 (FIG. 6) detects the film 2203.
The transport speed and transport direction of are detected.

(8) Mark Detecting Means 2310 The roll microfilm 2203 as the subject has a number of image frame portions along the length of which the original image is reduced and photographed and recorded, and is made to correspond to the individual image frame portions. The search mark is added.

FIG. 5 shows an example of the mode. Two
Reference numeral 502 denotes an image frame portion in which an image of an original is reduced and captured, 25
Reference numeral 03 denotes a search mark that is attached to the image frame portion 2502 for search.

The mark detecting means 2310 (FIG. 3) is generally composed of a light amount sensor. In this example, the mark detecting means 2310 is arranged so as to be located on the upper surface side (film illuminating section) of the condenser lens 2202. The light source for detecting the search mark of the mark detecting means 2310 and the lamp 2201 which is the light source for illuminating the film are independent.
The mark detecting means 2310 may be arranged at a position different from the film illuminating section as in the apparatus shown in FIG.

The mark detecting means 2310 is used for the film 22.
03, the change in light quantity due to the difference in the transmittance between the search mark 2503 portion and the non-search mark portion on the film 2203 is converted into an electric signal and sent to the roll film carrier control means 2402 (FIG. 6). .

Roll film carrier control means 2402
Is a signal sent from the mark detecting means 2310,
Counting is performed for each type of the search mark 2503 based on the signal sent from the film transport speed detecting means 2309.

Roll film carrier control means 2402
Conveys the film 2203 in the automatic search mode so that the count value and the search input value (address) previously input by the input means (not shown) on the roll film carrier operation unit 2104 (FIG. 1) become equal. By doing so, the desired image frame portion is changed to the film illumination portion 2
It becomes possible to automatically search the position of 202.

As described above, the mark detecting means 2310 is provided,
Roll film carrier 2102 that enables search operation
Is generally called a "searcher".

(9) Control means for film illumination lamp 2201 FIG. 6 is a block diagram of the apparatus control system. In the figure, the control system on the microreader printer body 2101 side is above the broken line, and the control system on the roll film carrier body 2102 side is below.

Reference numeral 2401 denotes a microreader printer control means for controlling the microfilm reader printer main body 2102.

2402 is a roll film carrier body 2
A roll film carrier control unit that controls 102.

Reference numeral 2403 denotes a micro reader / printer control means 2401 and a roll film carrier control means 2402.
Is a signal line that connects the two and allows communication between both 2401 and 2402. Reference numeral 2405 is a film lighting lamp 22.
01 is a light emission source control unit for controlling the light source 01, and is a state instruction signal (N
The lamp 2201 is controlled according to an O (lighting) / OFF (lighting off) instruction signal or a lighting voltage instruction signal.

Reference numeral 2404 denotes a film transport speed setting means (FIG. 4) provided in the roll film carrier operating section 2104 (FIG. 1).

Reference numeral 2501 denotes an arithmetic processing means, which is directly connected to the film transport speed setting means 2404 and the roll film carrier control means 2402. A set value relating to the film transport speed is input to the arithmetic processing means 2501 from the film transport speed setting means 2404. The arithmetic processing means 2501 inputs the film transport speed setting value,
It is output to the roll film carrier control means 2402.

Roll film carrier control means 2404
Controls the winding side driving means 2301 and the rewinding side driving means 2302 according to the output value from the arithmetic processing means 2501 and simultaneously turns ON / OFF the film illumination lamp 2201.
Perform F control.

That is, based on the film transport speed setting value set by the film transport speed setting unit 2404 for the roll film carrier control unit 2402, the roll film carrier control unit 2402 causes the winding side driving unit 2301 and the rewinding side driving unit. The drive signal is output to the means 2302. The winding side driving means 2301 and the rewinding side driving means 2302 operate according to the drive signal.

Roll film carrier control means 2402
When the drive signal is sent to the winding side driving means 2301, the winding side driving means 2301 rotates in the winding direction of the film 2203. The rotation of the winding side driving means 2301 is transmitted through the winding shaft 2303 (FIG. 3), and the winding side reel 230
5 rotates. As a result, the film 2203 is wound around the winding-side reel 2305. At this time, by operating the rewind side driving means 2302, the film 22
In some cases, a constant tension is applied to 03 to control winding disorder.

On the other hand, roll film carrier control means 2
When the 402 sends a drive signal to the rewinding side driving means 2302, the rewinding side driving means 2302 rotates in the rewinding direction of the film 2203. The rotation of the rewinding side driving means 2302 is transmitted through the rewinding shaft 2304, and the film cartridge 2
A rewind side reel (not shown) in 306 is rotated. As a result, the film 2203 is stored in the film cartridge 2306.
It is rolled up inside. At this time, the winding side driving means 230
There is also a case where a constant tension is applied to the film 2203 by operating No. 1 so as to prevent winding disorder.

When the film 2203 is conveyed by operating the winding side driving means 2301 and the rewinding side driving means 2302 in this way, the winding side roller 2307 and the rewinding side roller 23 are moved by the movement of the film 2203.
08 rotates at the same speed as the moving speed of the film 2203. As described above, the film speed detecting means 2309 is connected to the winding side roller 2307, and the film conveying speed detecting means (film encoder) 230 is also connected.
Since 9 is connected to the roll film carrier control means 2402, the roll film carrier control means 240
2 can detect the speed at which the film 2203 is actually conveyed.

A) FIG. 7 shows an example of ON / OFF control of the film illuminating lamp 2201 corresponding to the film transport speed. By rotating the input knob 3301 (FIG. 4) in the film transport speed setting means 2404. The figure shows a state in which the film transport speed is gradually increased to the maximum speed, and then the input knob 3301 is rotated in the opposite direction to gradually reduce the film transport speed and then stopped.

In FIG. 7, the vertical axis represents the film transport speed. On the horizontal axis, turn on the power of the roll film carrier, gradually increase the film conveyance speed, convey it at a constant speed for a while, then gradually decrease the speed,
It shows the passage of time until the power is turned off thereafter.

The set value set by the film transport speed setting means 2404 is the roll film carrier control means 2
It is input to 402. The roll film carrier control means 2402 follows the output value and the winding side drive means 230
1. At the same time as controlling the rewind side driving means 2302, it is judged whether the film 2203 is conveyed at a speed lower than the reference speed Vs or at a high speed, and the lamp control means is used for illuminating the film by the result. ON / OFF control of the lamp 2201 is performed.

That is, when the film transport speed is low and the film transport is stopped, the film illumination lamp 2201 is turned on.
When the N (lighting) state is reached and the film transport speed is high, the light emitting source 2201 is in the OFF (light off) state.

B) Further, the film transport speed detecting means 23
It is also possible to adopt a configuration in which the film transport speed is detected by a pulse from 09 and the lamp control is performed based on the result.

In this case, the film transport speed detecting means 23
The value detected by 09 is input to the roll film carrier control means 2402. The roll film carrier control means 2402 follows the output value to determine the film 2203.
Is conveyed at a speed lower than the reference speed Vs or is conveyed at a higher speed than the reference speed Vs, and the lamp control means controls ON / OFF of the film illumination lamp 2201 based on the result.

C) Further, when performing the film search operation (automatic search mode) using the mark detection means 2310, it is possible to predict the film transport speed and perform the lamp control according to the result. is there.

That is, the roll film carrier control means 2
Reference numeral 402 denotes the number of frames up to the image frame portion indicated by the search input value (address of the image frame portion to be searched) input by the roll film carrier operation unit 2104 (from the image frame portion currently located in the film illumination unit). Next, the number of frames up to the image frame portion to be searched for in the film illuminating unit is determined, and the film transport speed (motor speed) during the search operation is predicted. At this time, when it is predicted that the film transport speed will be above a certain level, the film illumination lamp 2201 is turned off at the same time as the search is started, and the film illumination lamp 2201 is turned on after the search is completed.

This film transport speed prediction is determined to be "high speed" when the number of frames up to the image frame portion to be searched is a certain number or more, and the film illumination lamp 2201 is turned off. When the number of frames is less than a certain number, it is judged as "slow",
The film illumination lamp 2201 is turned on during the search.

D) Further, the mark detecting means 2310 determines the distance between the image frames, and the arithmetic processing means 2501 calculates the distance to the image frame to be searched by the number of frames to the image frame to be searched and the frame interval. It is also possible to adopt a configuration in which the lamp control is performed according to the result.

In this case, the distance between the image frame portions is determined by measuring the distance between the image frame portions of the first several frames by the mark detecting means 2310 when the film is inserted.

In this case, when the distance to the image frame portion to be searched is a certain number or more, it is judged as "high speed" and the film illumination lamp 2201 is turned off. When the distance to the image frame portion to be searched is equal to or less than a certain number, it is determined as "low speed", and the film illumination lamp 2201 is turned on during the search.

E) Further, an invention has been proposed in which the moving speed of the projected image on the reader screen is controlled in relation to the projection magnification of the film image frame portion as the subject with respect to the reader screen 2209 (Japanese Patent Application No. 7-
66996).

That is, the projection magnification detecting means, the film conveying speed setting means, and the calculating means for performing the operation concerning the film conveying speed control based on the detection result of the projection magnification detecting means and the set value of the film conveying speed setting means. And the film conveying speed is controlled according to the calculation result of the calculating means.

That is, the film conveying means is controlled in accordance with the projection magnification of the film image frame portion with respect to the leader screen which is the image display portion to control the moving speed of the projected image on the leader screen. It becomes possible to keep the relationship between the set value and the moving speed of the image projected on the reader screen within a certain range or within a certain range.For example, the projected image can be visually observed to adjust the position of the projected image or to perform the flow reading. However, when the film needs to be transported, the film transport speed can be set without considering the projection magnification that is changed according to the film, so that the operability can be significantly improved.

According to the present invention, even in such a control system device, the moving speed of the projected image on the reader screen is calculated by the calculation processing means 2501, and the ON / OFF control of the film illuminating lamp 2201 is performed accordingly. Is also possible.

In this case, when the control movement speed of the projected image on the reader screen is a certain number or more, it is judged as "high speed" and the film illumination lamp 2201 is turned off. When the control movement speed of the projected image on the reader screen is less than a certain number, it is judged as "low speed",
The film illumination lamp 2201 is also turned on during the search.

Thus, in any of the above a) to e),
When you need to view the film while transporting it at a low speed, such as adjusting the position of the image or scanning the image,
When the film illuminating lamp 2201 is turned on and the film is fast forwarded or rewound, the film illuminating lamp 2201 is turned off to prevent the so-called "annoying projection image during search" from being displayed on the screen. There is.

The arithmetic processing means 2501 may be provided in the roll film carrier control means 2402 or the like.

Further, in the above-described embodiment, the film illumination lamp 2201 is turned off at the time of retrieval, but the light source control means 2405 is controlled to make the film illumination lamp 2201 dark during the retrieval. It is also possible to adopt such a configuration (a configuration for reducing the amount of light emission).

The present invention is also effective in an apparatus in which a microfiche film is used as a film as a subject, and the microfiche carrier conveys and moves it to a film illumination section to manually or automatically retrieve a desired image frame section. Applicable.

The present invention is not limited to a microfilm reader or reader printer, but a device similar to this, that is, a subject having a large number of image frame portions is conveyed to a subject illumination portion, and a desired image frame portion is used as the subject illumination portion. The present invention can be effectively applied to an image display device in which a search position is set and the image information of the image frame portion is projected and displayed on the image display portion.

[0120]

As described above, according to the present invention, a subject having a large number of image frame portions is conveyed to the subject illumination portion, a desired image frame portion is searched for in the subject illumination portion, and the image frame portion In an image display device for projecting and displaying image information on an image display unit, a troublesome flow moving image is displayed on the image display unit during object transportation without using a mechanical shutter, thus increasing cost and generating operating noise. It is possible to prevent the image from being displayed and to prevent the troublesome moving image from being displayed on the image display unit even when the subject is conveyed by a manual operation.

Even when the subject is being transported, if the transport speed is in a low-speed transport state that is lower than a certain reference speed, the subject illumination lamp is not turned off or is controlled to be lit without controlling the light emission amount reduction so that the image display portion is displayed. The so-called "flow reading" can be performed on the image frame portion displayed while moving slowly.

In the automatic search mode, the object transport speed is controlled to be low when the target search image frame portion is close to the subject illumination portion, and accordingly, the subject illumination lamp is turned on and the image display portion slowly moves. It is possible to recognize that the target search image frame portion is closer to the subject illumination portion because the image frame portion is displayed while moving.

[Brief description of drawings]

FIG. 1 is an external perspective view of a microfilm reader printer according to the present invention.

FIG. 2 is a vertical side view model diagram of the device.

FIG. 3 is a perspective view of a film transport system of a roll film carrier.

FIG. 4 is an explanatory diagram of a configuration example of film transport speed setting means.

FIG. 5 is an explanatory diagram of a roll film embodiment.

FIG. 6 is a block diagram of a device control system.

FIG. 7 is a diagram of an example of ON / OFF control mode of a film illumination lamp corresponding to a film transport speed.

FIG. 8 is an explanatory diagram of a film transport system and a control system of the roll micro film reader or the reader printer.

[Explanation of symbols]

2101 Reader Printer Main Body (Image Display Device) 2102 Roll Film Carrier (Subject Transfer Device) 2103 Reader Screen (Image Display Unit) 2104 Roll Film Carrier Operation Unit 2201 Film Illumination Lamp (Subject Illumination Lamp) 2202 Condenser Lens (Film (Subject ) Illumination section 2203 Roll film (subject) 2204 Projection lens barrel (projection means) 2209 Reader screen (image display section) 2210 Image forming section 2301 Film winding side driving means 2302 Film rewinding side driving means 2309 Film transport speed detection Means 2310 Mark detection means 2401 Micro reader printer control means 2402 Roll film carrier control means 2404 Film transport speed setting means 2405 Light emission source control means 250 Processing means

Claims (7)

[Claims] 1. A subject having a large number of image frame portions is conveyed to a subject illumination portion, a required image frame portion is located at the subject illumination portion, and image information of the image frame portion is projected and displayed on the image display portion. In the image display device, a method for controlling the subject illumination lamp is controlled according to a set value of a subject transport speed setting means. 2. A subject having a large number of image frame portions is conveyed to a subject illumination portion, a required image frame portion is located at the subject illumination portion, and image information of the image frame portion is projected and displayed on the image display portion. In the image display device, a method for controlling the image display device is characterized in that the lamp for illuminating the object is controlled according to the value detected by the object transport speed detecting means. 3. A subject having a large number of image frame portions is conveyed to a subject illumination portion, a required image frame portion is located at the subject illumination portion, and the image information of the image frame portion is projected and displayed on the image display portion. A method of controlling an image display device, comprising: predicting a subject transportation speed in an automatic search execution mode of a required image frame portion, and controlling a subject illumination lamp based on the prediction result. 4. A subject having a large number of image frame portions is conveyed to a subject illumination portion, a required image frame portion is located at the subject illumination portion, and image information of the image frame portion is projected and displayed on the image display portion. In the image display device, in the automatic search execution mode of the required image frame portion, the number of frames from the image frame portion currently located in the mark detection means of the image frame portion or the subject illumination portion to the required image frame portion to be searched. A method of controlling an image display device, comprising: 5. A subject having a large number of image frame portions is conveyed to a subject illumination portion, a required image frame portion is located at the subject illumination portion, and the image information of the image frame portion is projected and displayed on the image display portion. The image display device has means for controlling the moving speed of the projected image on the image display section by controlling the object carrying means according to the projection magnification of the image frame part of the object with respect to the image display section. A method for controlling an image display device, comprising: controlling a subject illumination lamp according to a moving speed of a projected image on the image display unit. 6. The subject illumination lamp control is a control for turning off the lamp when the subject is conveyed at a predetermined speed or more, or a control for reducing the light emission amount of the lamp below a steady state. Item 6. A control method for an image display device according to any one of items 1 to 5. 7. The subject is a roll microfilm or a microfish film, the subject transport means is a roll film carrier or a fish film carrier, and the device is a microfilm reader or the reader printer. A method for controlling the image display device according to claim 6.