JPH01217439A - camera - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control signal reception standby display device for a camera.

[Prior Art] Conventionally, a device for releasing a camera by remote control operation basically has a configuration as shown in FIG.

In FIG. 2, 1 is a control circuit that electrically controls the camera. Reference numeral 2 designates an exposure control circuit for controlling the shutter and the like, and reference numeral 3 designates a winding circuit for transporting the film, which are controlled by the control circuit 1. 4 is turned on by pressing the release button. A release switch, 5 a self-timer switch turned on by pressing the self-timer start button, and 6 a remote control mode switch turned on when using the remote control, are input to the control circuit 1, respectively.

Further, t is a remote control receiving circuit that receives a remote control signal, and a light receiving element 8 that receives the remote control signal is connected thereto. When the receiving circuit 7 receives the remote control signal, it outputs to the control circuit 1 that the signal has been received.

9 is an LED that indicates when the self-timer is operating.
Driven by control circuit 1.

10 is a remote control transmitter that transmits remote control signals.

The switch 11 connected to this is a switch that is pressed when transmitting a remote control signal, and the switch 12 is a switch that sets the transmission signal mode.When the Ml side is turned on, the first mode 1 is set, and when the M2 side is turned on, the second mode is set. 2 signal. 13 is a light emitting element that emits remote control signal light.

The operation of such a camera with a remote control function was as shown in the flowchart of FIG.

First, if no switch is operated and the remote control is not on standby, #1 → #2 → #3
→#1... becomes a loop.

Then, in #1, it is checked whether the release switch 4 is pressed. If it is pressed, proceed to #8; if not, proceed to #2. In #2, it is checked whether the self-timer switch 5 is pressed.

If it is pressed, go to #6; if not, go to #3. In #3, it is checked whether it is in remote control mode. In the case of FIG. 2, if the remote control mode switch 6 is on, it is remote control mode and the process proceeds to #4; if it is off, it is not remote control mode and returns to #1. In this way, the process goes through a loop of #1→#2→#3→#1 and waits until some input is received.

When the release switch 4 is pressed, the sequence progresses from #1 to #8.

In #8, the shutter is opened and closed to expose the film, and the process proceeds to #9, where the film is wound one frame, preparations for photographing the next frame are completed, and the process returns to #1.

When the self-timer switch 5 is pressed, the process advances to #6. #
6 is a timer for 8 seconds, during which time the self-timer display LE
Blink D9 at 2Hz. When 8 seconds have passed, proceed to #7. #7 is a 2 second timer, and here, the corresponding LED
9 flashes at 8Hz. This time chart is shown in FIG. The blinking of the LED 9 at 2 Hz in #6 confirms that the self-timer has started (that it is in operation), and the blinking of 8 Hz in #7 indicates that the release is about to occur.

After 2 seconds have passed after entering #7, the process advances to #8, where the film is exposed in the same way as when release switch 4 was pressed, and #9
Winding is performed at , and the process returns to #1.

The above is an example of the operation of a general camera that does not include a remote control.

Next, a case where the remote control mode switch 6 is turned on and the remote control mode is set will be described.

In the case of remote control mode, it is determined in #3 that the mode is remote control mode, and the process proceeds to #4. At #4, it is checked whether mode 1 of the remote control signal has been received. If not received, the process advances to #5 and checks whether mode 2 of the remote control signal is also received. If not received, return to #1.

In this way, a loop of #1→#2-#3→#4→#5-#1 is created. If the release switch 4 or self-timer switch 5 is pressed, the above-mentioned remote controller
Release and self-timer photography are performed in exactly the same way as when the camera is not in mode.

Suppose that the switch 11 of the remote control transmitter 10 is pressed. Depending on the state of the switch 12, a mode 1 or mode 2 remote control signal is output from the light emitting element 13. This signal is received by the light receiving element 8, and the remote control receiving circuit 7 outputs to the control circuit 1 that it has received the remote control mode 1 or mode 2 signal. Here, mode 1
Either the remote control receiving circuit 7 or the control circuit 1 should have the function of determining mode 2 and mode 2.

For example, if it is a mode 1 signal, the process proceeds from #4 to #7 in FIG. The steps after #7 are the same as those after #7 when using the self-timer, and the self-timer display LED is displayed for 2 seconds.
After 9 flashes at 8 Hz, exposure is performed at #8 and winding is performed at #9.

That is, in remote control mode 1, when a remote control signal is received, the camera is released two seconds later.

On the other hand, when mode 2 is received, the process proceeds from #5 to #8. In mode 1, the camera is released immediately upon receiving a remote control signal.

[Problems to be Solved by the Invention] A remote control release device is generally intended to be operated from a position away from the camera, but if it is far away, the camera and remote control signal receiver may not be able to be operated by the remote control. However, it was difficult to check whether the device was in standby mode or not. For example, in the example shown in Figure 2, the camera has a switch 6 that sets the remote control mode, and a main switch (not shown) that generally turns on and off the entire camera. It is necessary to set the appropriate shooting mode (not shown).

However, these conditions are difficult to confirm from a position far away from the camera, such as by simply checking the position of a switch.

Conversely, if the photographer is not aware of the fact that the camera is in standby mode and can receive remote control signals, the camera may release the film inadvertently due to incorrect operation or unintentional remote control signals or noise from other sources, resulting in wasted film. Or,
There is a problem in that the remote control signal receiving circuit consumes unnecessary power, which accelerates the consumption of the power supply battery.

In other words, if you are in remote control mode, use some means to confirm that the remote control release is on standby, to indicate that there is a risk of the release being triggered by signals or noise from other sources, and to indicate that the battery is being consumed. However, conventional cameras do not have a way to clearly display them.

The present invention aims to solve the above problems. That is, an object of the present invention is to provide a remote control signal reception standby display device that can issue a confirmation warning using a self-timer LED or the like without confusing the remote control mode with the self-timer.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a removable or built-in remote control release signal receiving circuit, a means for determining the reception standby state of the υ' control signal, and a periodic In a camera that is capable of self-timer photography and remote release using a remote control signal, the self-timer display means displays when the self-timer is operating by on/off control, and is capable of self-timer shooting and remote release using a remote control signal. is now controlled on and off at a cycle longer than the on/off cycle of the self-timer operating display.

[Function] According to the present invention, the remote control mode can be displayed using the self-timer display means. That is, the display means of the self-timer can be made to blink at a longer cycle than the blinking during the normal self-timer, and the remote control mode can be recognized and warned using the same display means without being confused with the self-timer.

[Embodiment] FIG. 1 is a flowchart showing an embodiment of the present invention. The main circuit configuration is the same as in Figure 2, and #1
-#9 have completely the same content as in FIG.

First, when not in remote control mode, if no switch is pressed, a loop of #1→#2→#3-#10→#1 is created. Since it is not in remote control mode from #3, #1
Go to 0. Here, the self-timer display LED 9 is turned off. For example, if a microcomputer is used in the control circuit 1 shown in FIG. 2, an OFF signal is latched to an output port that turns the LED 9 on and off. If the LED9 is latched on before proceeding to #lo, then #1
At 0, the off state is latched and the LED 9 turns off.

If the LED 9 is latched off before proceeding to #IO, the LED 9 will remain off even after proceeding to #IO. When the release switch 4 and self-timer switch 5 are pressed, the operation is exactly the same as that shown in FIG. 6.

If the remote control mode is entered, proceed from #3 to #4. If the remote control signals mode 1 and mode 2 are not received, the process proceeds in the order of #3→#4→#5-#11. #ll~#14
Now, check the value of the timer built in the microcomputer of the control circuit 1. In #11, the timer value is 30 m5e
c or #12 is the same (250m5e
In #13, check whether it has exceeded 280 m5ec; in #14, check whether it has exceeded 2000+n5ec.

Now, let's assume that it exceeds 2000m5ec. Flowchart #1 → #2 → #3 → #4-#5-#
11, and since the timer has exceeded 2000 m5ec, in #ll it is determined that the time has exceeded 30 m5ec, and the process advances to #12. At #12, the distance is over 250m5ec, so proceed to #13. #13: 280m5ec
, so proceed to #14. In #14, 2QOQ
Since it exceeds msec, proceed to #19.

In #19, the timer is reset. That is, the timer value exceeds 2000m5ec before proceeding to #19, but when #19 is executed, the timer value becomes Om5ec and returns to #1.

＃1-$ 2 → #3 → #4 → #5 → #11, then #
Check the timer value at step 11. Here, a certain amount of time has passed while proceeding from #19 to #ll, but with a general microcomputer, it is easy to program this time to be sufficiently short compared to 30 m5ec. It is. Therefore, the timer value has not reached 30 m5ec, and the process advances from #ll to #15. At #15, the output port of the microcomputer is latched so as to turn on the self-timer display LED 9. Go back to #1.

This #1 → #2 → #3 → #4 → #5 → #11 → #15 →
The loop #1 is sufficiently short for 30 m5ec, but if the loop is repeated many times, the timer value will eventually reach 30 m5ec.
Exceeds m5ec. And instead of #11 to #15,
Proceed to #12, and if it does not exceed 250 m5ec, proceed to #16 to turn off the LED 9. #1
Go back and make a loop.

In this way, if the timer value is T, 1530m5ec-+ #15 turns LED9 on 3
0〈T≦250m5ec 4 @16 LED9
Turn off 250<75280m5ec -* Turn on LED9 by 917 280<T≦2000rnsec→#
18 turns the self-timer display LED 9 on and off by turning LE[19 off, and T is 2000m5ec.
When the timer is exceeded, the timer is reset by #19 and T=0.
Then, the LE [19 is turned on and off again.

This timing chart is shown in FIG.

In this way, in remote control mode, the corresponding LED9
repeats blinking every 2 seconds. During normal self-timer mode, the LED 9 blinks at 2 Hz or 8 Hz, so there is no confusion between this and remote control mode.

Here, a timing chart of the self-timer display LED 9 when a remote control signal is received is shown in FIG.

In the above embodiment, the self-timer and remote control standby state are displayed using the LED 9, but a sounding body such as a buzzer may be used in the same manner. In that case, in this embodiment, the buzzer may sound while the LED 9 is on, and the buzzer may be stopped while the LED 9 is off. Furthermore, although the remote control mode is determined only by the state of the remote control mode switch 6 shown in FIG. It's fine if you can judge. For example, if the camera has a remote control attached, the determination may be made based on the remote control attached to the camera.

[Effects of the Invention] As described above, according to the present invention, in the standby state for receiving a remote control signal, the self-timer operating display means is controlled to be turned on and off at a cycle longer than the on-off cycle of the self-timer operating display. By doing so, the following effects are achieved.

First, you can confirm that the camera is in remote control mode from a distance from the camera. Second, if the remote control mode is entered inadvertently, a warning signal will be issued. Thirdly, since the self-timer operation indicator is used, there is no need to add a new LED or its drive circuit, and an increase in cost can be avoided. Fourth, the use of a remote control is often used in place of a self-timer, and the fact that its display is the same as that of the self-timer is logically straightforward and easy for users to understand. Fifth, since the on/off cycle of the remote control display is longer than the on/off cycle of the self-timer display, the operator is not disturbed. Sixth, if you make the on/off cycle of the remote control display longer, in other words, the longer the blinking cycle, the longer the lighting duty (DUT)
Y) can be lowered, resulting in less battery consumption even when displayed for a long time. For example, in the above embodiment, the self-timer is DUTYI/2 and the remote control mode is DUTYI/2.
If TY60/2000 = 37100 and the power consumption is the same as that of the self-timer of 10 seconds, display for 166 seconds is possible in remote control mode.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the operation of one embodiment of the present invention, and FIG.
FIG. 1 is an explanatory diagram showing an example of a circuit of the conventional technology, FIG. 3 is an explanatory diagram of the timing of the operation of FIG. 1, and FIG. 4 is an explanatory diagram of the timing of the self-timer of the conventional technology. FIG. 5 is an explanatory diagram of the timing of the self-timer display LED when the remote control signal of FIG. 1 is received, and FIG. 6 is an explanatory diagram showing the operation of the conventional technique. DESCRIPTION OF SYMBOLS 1... Camera control circuit, 2... Exposure control circuit, 4... Release switch, 5... Self-timer switch, 6... Remote control mode switch, 7... Remote control receiving circuit, 9. ...Self-timer display LED. 10...Remote control transmitter. Figure 1

Claims (1)

[Claims] 1. A remote control release signal receiving circuit, either removable or built-in, means for determining whether the remote control signal is in a standby state, and a display means for indicating that the self-timer is operating through periodic on/off control. In a camera capable of shooting and remote-controlled release using a remote control signal, in a standby state for receiving a remote control signal, a self-timer operating display means is controlled to be on/off at a cycle longer than the on/off cycle of the self-timer operating display. A remote control signal reception standby display device comprising a control means.