JPH09113988A - Remotely controllable camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent adverse influence by a remote control signal on other parts without sacrificing the responsiveness of remote control. SOLUTION: An action control means 17 is constituted of a remote control device 20 transmitting the remote control signal by infrared light in response to the operation of a transmission operating member 21; and a camera body 10 provided with a reception means 16 receiving the remote control signal and a light projecting/receiving means 12 irradiating a subject with the infrared light and receiving the reflected infrared light from the subject, and performing camera actions including the actuation of the means 12 at the time of recognizing the reception of the remote control signal. The remote control device 20 is provided with a transmission control means 22 consecutively transmitting the remote control signal plural times in response to operation performed once and inhibiting the transmission of the remote control signal for the succeeding 1st specified time even when the transmission operating member is operated. The camera body 10 performs the camera actions including the actuation of the means 12 the 2nd specified time after recognizing the reception of the remote control signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system for remotely operating a camera with a remote control device (remote control).

[0002]

2. Description of the Related Art Home electric appliances such as televisions and air conditioners which can be remotely controlled by a remote control have been widely used, but in recent years, a system in which this type of remote control is applied to a camera has been put into practical use. The remote controller of the camera adopts an optical signal transmission system by infrared light as in the case of the above-mentioned home electric appliances, and transmits a remote control signal by infrared light in response to the operation of the transmission switch. This remote control signal is received by the receiving device of the camera, and in response to this, the camera performs camera operations such as distance measurement and shutter release. By the way, as a distance measurement method often used for lens shutter cameras,
A so-called active distance measuring method is known. This is to project infrared light toward a subject, receive reflected infrared light from the subject, and measure the distance to the subject using the so-called triangulation principle.

When an infrared ray remote controller is used in a camera that employs the active distance measuring method as described above, the distance measuring light and the remote control signal from the remote controller are both infrared light, so that the distance measuring is performed. If a remote control signal is transmitted from the remote controller, the light may be received by the light-receiving element for distance measurement, and erroneous distance measurement may occur. Therefore, in order to prevent such inconvenience, conventionally, the following proposals have been made. (1) When a remote control signal is received from a remote controller during distance measurement, distance measurement is stopped (Japanese Patent Laid-Open Nos. 1-227137 and 3-54534). (2) The time interval of the remote control signal is set so that the distance measuring operation is always performed after the remote control signal is transmitted until the next remote control signal is transmitted (Japanese Patent Laid-Open No. 2-247626). (3) The remote operation signal is transmitted only once by one operation, and the transmission of the next remote operation signal is prohibited until the distance measurement is completed (Japanese Patent Laid-Open No. 3-54535).

[0004]

However, each of the above methods (1) to (3) has the following drawbacks. In the method of (1), if the remote control signal is received during the distance measurement, the distance measurement will be stopped. Therefore, for example, if you release the transmission switch of the remote control and then press it again, or if you continue to press the transmission switch. Therefore, the distance measurement, that is, the photographing operation cannot be performed for a long time. In the method (2), after the remote operation signal is transmitted, the next remote operation signal is not transmitted until at least the time required for distance measurement elapses, that is, the time interval between the remote operation signals becomes long, and thus the image capturing is performed. The operation may be behind the intended timing. That is, not all remote control signals from the remote controller are necessarily received by the camera. Therefore, in order to ensure that the camera performs the desired operation, the remote control signal is transmitted multiple times by one transmission operation. It is desirable to do. However, if the time interval between the remote control signals is long as described above, the time until the next remote control signal is received becomes longer when the signal reception first fails, and as a result, the shooting operation may be delayed. Will increase. In the method of (3), the remote control signal is 1 in one transmission operation.
The response is poor because it is output only once, and the number of cases in which shooting cannot be performed unless the transmission operation is performed multiple times increases.

An object of the present invention is to provide a camera system in which adverse effects on the remote operation signal are reliably prevented without sacrificing the responsiveness of the remote operation.

[0006]

The present invention provides a remote control device for transmitting a remote control signal by infrared light in response to an operation of a transmission control member, and a receiving means for receiving a remote control signal from the remote control device. , And a projection / light receiving means for irradiating the subject with infrared light and receiving reflected infrared light from the subject, and the reception signal of the reception means is a remote control signal from the remote control device. When recognized, the present invention is applied to a camera system including a camera body that performs a camera operation including operation of a light projecting / light receiving means. The invention of claim 1 solves the above problems by the following configuration. The remote operation device continuously transmits the remote operation signal a plurality of times in response to one operation of the transmission operation member, and the remote operation signal is transmitted even if the transmission operation member is operated for a first predetermined time thereafter. The camera body has a transmission control means for prohibiting the transmission, and the camera body has an operation control means for performing a camera operation including the operation of the light projecting / light receiving means after the second predetermined time after recognizing the reception of the remote control signal. In the present invention, the remote operation signal is continuously transmitted a plurality of times from the remote operation device in response to one operation of the transmission operation member. On the camera body side, since the camera operation is performed after the second predetermined time has elapsed after recognizing the reception of any of the remote device signals, even if the recognized signal is the first remote control signal, The light projecting / light receiving means is not operated while the remote control signal after the first time is still transmitted. Further, the remote control device prohibits the transmission of the remote control signal even if the transmission control member is operated for the first predetermined time after the series of remote control signals are transmitted, so that the operation of the light projecting / light receiving means is not performed. A remote control signal for a new operation is not transmitted while it is being performed. According to a second aspect of the present invention, the number of remote operation signals continuously transmitted by one operation of the transmission operation member is n (n is an integer of 2 or more), the transmission time of one remote operation signal is TS, and the projection time is TS. light/
When the time required for the operation of the light receiving means is Ta and the first and second predetermined times are T1 and T2, respectively, T1> (n-1) * TS + Ta T2> (n-1) * TS is satisfied. The first and second predetermined times are set to. According to the third aspect of the invention, the operation of the light projecting / light receiving means is performed first among the camera operations. The invention according to claim 4 further comprises a focus adjusting means for adjusting the focus of the photographing lens based on the output signal from the light projecting / receiving means, and the camera operation includes the operation of the focus adjusting means. In the fifth aspect of the invention, when the manual focus adjustment mode is set, the camera operation excluding the operations of the light projecting / receiving means and the focus adjusting means is performed immediately when the reception of the remote control signal is recognized. According to the invention of claim 6, when the flash photographing mode is set, the flash device is charged while the second predetermined time has elapsed after the reception of the remote control signal is recognized, and the second predetermined time has elapsed. In addition, the camera operation is started in a state where charging of the flash device is completed. The invention of claim 7 solves the above problems by the following configuration. The remote operation device has a transmission control means for continuously transmitting a remote operation signal a plurality of times in response to one operation of the transmission operation member and thereafter outputting an operation start signal for performing a camera operation. However, the camera body has operation control means for performing camera operation including operation of the light projecting / light receiving means upon recognizing reception of the operation start signal after recognizing reception of the remote control signal. According to an eighth aspect of the present invention, each remote control signal is composed of a plurality of pulse signals, and the operation start signal is a pulse signal having a narrower width than any of the plurality of pulse signals. According to a ninth aspect of the present invention, each remote control signal is composed of a plurality of pulse signals, and the operation start signal is a pulse signal wider than any of the plurality of pulse signals. According to a tenth aspect of the present invention, the width of the pulse signal received by the receiving means is detected, and the detection result is compared with a preset predetermined width so as to identify whether the received pulse signal is an operation start signal or not. It was done. The eleventh aspect of the present invention further comprises focus adjusting means for adjusting the focus of the photographing lens based on the output signal from the light projecting / light receiving means, and the camera operation includes the operation of the focus adjusting means.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a camera system according to the present invention, in which 10 denotes a camera body and 20 denotes a remote controller (remote operation device). Camera body 10
Is a microcomputer (hereinafter, referred to as a microcomputer) 1 for controlling the camera operation according to a flowchart described later.
The microcomputer 17 has a built-in 7 and a memory device 11 for storing various information, a distance measuring device 12 having a projector and a light receiver for active distance measurement, a control device 13 for the focus adjustment motor M, and an object. A photometric device 14 for detecting brightness,
A remote control receiver 16 for receiving a remote control signal from a remote controller 20 and a flash device 18 for flash photography are connected. It should be noted that the microcomputer 17 is provided with a timer for performing a timing operation described later.

The remote controller 20 is a microcomputer 2 equipped with a timer.
The transmission switch 21 and the lighting control circuit 24 of the infrared LED 23 that emits infrared light are connected to the microcomputer 22. When a transmission button (not shown) is pressed and the transmission switch 21 is operated, a remote control signal for causing the camera to perform a series of photographing operations is transmitted by controlling the lighting of the infrared LED 23. The series of photographing operations includes distance measurement, photometry, lens driving, shutter release, and the like.

2A to 2D are diagrams for explaining a remote control signal from the remote controller 20 and the operation of the camera body 10 in response to the signal. The remote controller 20 according to the present embodiment operates a transmission signal group (hereinafter referred to as a command) as a remote operation signal n times (n is 2 or more) by one operation of the transmission switch 21. (Integer of) is sent. One command consists of a predetermined signal array pattern set in advance as shown in the figure, and if the time required for its transmission is TS, the total transmission time per operation of the transmission switch 21 is TS * n. The reason why the same type of command is transmitted a plurality of times is that not all commands reach the camera body. Camera body 10
Recognizes that the shooting operation is instructed only after recognizing the array pattern of one command.

To simplify the explanation, if the number of command transmissions of the remote controller 20 by one operation is three, the total transmission time is (TS × 3) hours. 2 (b)-
(D) shows the camera body 10 for the first time, the second time, and the third time, respectively.
The operation of the camera when the command for the second time is recognized is shown. When the camera recognizes the first command as shown in FIG. 2B, it recognizes that the shooting operation is instructed at the time when TS time has elapsed from the start of transmission. However, if the distance measurement is performed immediately after that, the second and subsequent commands are transmitted from the remote controller 20, so that erroneous distance measurement may occur. Therefore, the camera body 10 cannot start the distance measurement until the command transmission from the remote controller 20 is completed, that is, at least the second and third command transmission times TS × 2 have elapsed from the first command recognition. .

On the other hand, for example, when the camera body 10 cannot recognize the first command and the second command transmitted by the operation of the transmission switch 21 and recognizes the third command, the distance measurement is performed immediately after the command recognition. Even if is started, the command by the previous operation does not affect the distance measurement. However, since the camera body 10 cannot determine how many times the command recognized by the camera body 10 itself is, it is necessary to postpone the distance measurement until at least TS × 2 has elapsed from the command recognition in this case as well.

In the above description, the number of command transmissions is three. However, if the number of transmissions is n, the waiting time TWAIT from command recognition to the start of distance measurement is TWAIT> (n-1) * TS Need to meet.

However, even if the waiting time TWAIT as described above is provided, if the command from the remote control 20 is transmitted again after the start of the distance measurement, the above-described erroneous distance measurement will occur. To prevent this, it is necessary to prohibit the command retransmission until a certain time (hereinafter referred to as the retransmission prohibition time TX) elapses after the completion of the transmission by one operation of the remote controller 20. If the retransmission inhibition time TX is set to be longer than the distance measurement start waiting time TWAIT plus the distance measurement time TAF in the camera, it is possible to prevent the distance measurement timing and the transmission timing from definitely overlapping.

3 to 7 are flowcharts showing the processing procedure for realizing the above-mentioned operation. The operation of the present embodiment will be described in more detail with reference to these flowcharts and the signal waveform diagram of FIG. FIG. 3 shows a control procedure by the microcomputer 22 of the remote controller 20, and the microcomputer 22 operates when the transmission switch 21 is pressed (step # 10).
1) The infrared LED 23 is turned on and off, and a pulsed remote control signal (command) having a wavelength band near 950 nm is transmitted n times at preset intervals as shown in FIG. Step # 102). The command waveform is not limited to that shown in FIG. 8 and may be the waveform as shown in FIG.

After transmitting the command n times, the microcomputer 22 activates a timer to start time measurement (step # 10).
3) In step # 104, the measurement time is continuously monitored. Then, when the retransmission prohibition time TX has elapsed, the processing ends. Until the retransmission inhibition time TX elapses from the timer start, even if the transmission switch 21 is operated again, the operation is not accepted and the remote operation signal is not transmitted. This retransmission prohibition time TX needs to be longer than the time obtained by adding the distance measurement start waiting time TWAIT to the distance measurement time TAF in the camera as described above, and a predetermined time satisfying this is defined as the retransmission prohibition time TX. It is preset on the remote control side.

4 and 5 show the procedure of command recognition processing by the microcomputer 17 on the camera body 10 side.
The command transmitted from the remote controller 20 is the camera body 10
Is received by the receiving device 16, and the output signal of the receiving device 16 is input to the microcomputer 17. The microcomputer 17 detects the first rising edge or falling edge of the output signal of the receiving device 16 (step # 1), and starts time measurement by a built-in timer (step # 2). After that, it goes around the loop of Steps # 3 and # 4 and goes to Step # 4.
Is affirmed, that is, before the second edge is detected, the predetermined time T1 previously stored in the storage device 11 (see FIG. 8).
(B) and (c)), it is determined that the received signal is not the signal transmitted by the remote controller, and the process proceeds to step # 19. In order to stop the timer and detect the first edge again, step # 1 is performed. Return to.

When the second edge is detected before step # 4 is affirmed (step # 3), the time measured by the timer in step # 5 is read to determine the time interval (width) between the signal edges. Compare with T1 above. If they do not match, it is determined that the signal is not a remote control signal from the remote controller 20, and the process proceeds to step # 19. If they match, the process proceeds to step # 6.

In the subsequent steps, the same processing as described above is performed for the times T2 to T4, and only when the step # 16 is affirmed, it is judged that the received signal is the transmission signal from the remote controller 20 and the photographing operation is permitted (step # 17). Then, after performing the photographing process in step # 18, step #
The timer is stopped at 19 and the process returns to step S1. In addition,
FIG. 8B shows an example in which the second command is also monitored after the first command is recognized. However, after the command is recognized even once, the power supply to the receiving device 16 is cut off and the command There is no problem even if you do not monitor.

6 and 7 show details of the photographing operation in step # 18. Note that this control is for flash photography. When the photographing operation is permitted (step # 20), the microcomputer 17 of the camera body 10 first sets the flash device 1.
The state of charge of No. 8 is confirmed (step # 21). When the charging of the flash device 18 is completed, the waiting time TWAIT stored in advance in the storage device 11 is set and the time measurement by the timer is started (step # 23), and the elapsed time is set in step # 28. While confirming, in step # 29, wait for the waiting time TWAIT to elapse.

When the waiting time TWAIT has elapsed, the timer measurement is terminated (step # 30), and it is determined whether the battery voltage is equal to or higher than a predetermined value (step # 35). If the battery voltage is less than the predetermined value, a warning is given in step # 35A, and then the process is terminated.
That is, the active distance measuring device 12 is operated, and the distance from the output to the subject (subject distance) is obtained. The time required for distance measurement is TAF as described above. During this time,
No command is transmitted from the remote controller 20. Note that the reason why distance measurement is performed only when the battery voltage is above the specified value is that there is a large fluctuation in the battery voltage after the camera's charging operation. This is because there is a possibility that distance or distance measurement may be impossible, or that a heavy load operation such as motor driving or shutter driving cannot be terminated.

When the distance measurement is completed, the photometric device 14 is operated to detect the brightness of the object (object brightness) (step #
32), the exposure value is calculated based on the detected subject brightness, and the focus adjustment motor controller 13 adjusts the focus of the taking lens (not shown) based on the detected subject distance (step # 33). Then, based on the calculated exposure value, an unillustrated diaphragm or shutter is driven to perform photographing (release operation) (step # 34).

On the other hand, when the charging of the flash device 18 is not completed in step # 22, the timer is operated to measure the charging time and then the completion of charging is waited (step # 24,
S25), the charging operation is stopped when the charging is completed (step # 26). Then reset the timer and
Start again. Further, a time obtained by subtracting the charging time (time from the start of timer measurement to completion of charging in step # 24) from the waiting time TWAIT is set as the time-up determination time, and then the process proceeds to step # 28 described above. In this case, if it is determined in step # 29 that the time-up determination time has elapsed, the process proceeds to step # 30. However, if charging or the like is not completed even after the waiting time TWAIT has elapsed since the timer measurement was started in step # 24 (step # 25A), a warning is issued in step # 25B and then the process is terminated.

The operation during flash photography has been described above. However, if flash photography is not performed, the processing excluding steps # 22 and # 24 to # 27 from FIG. 6 may be performed. Further, in a camera in which the manual focus mode (manual focus adjustment mode) in which the photographer manually adjusts the focus is selectable, when the manual operation is set, the reception of the remote control signal is recognized immediately, that is, the waiting time TWAIT.
The photographing operation (except the operation of the distance measuring device 12 and the operation of the focus adjustment motor control device 13) may be performed without waiting.

Although the timer is stopped at step # 30 in FIG. 7, this timer may be operated until the next timer is used, or steps # 30 to # 3 in FIG.
There is no problem if you stop at any of the intervals. Further, although the example in which the distance measuring operation is first performed after the waiting time TWAIT has passed has been described, the distance measuring may be performed within the retransmission prohibit time TX of the remote controller, and for example, the distance measuring may be performed after the photometry.

In the above embodiment, the transmission switch 21 is the transmission operation member, the reception device 16 is the reception means, the distance measurement device 12 is the light projection / light reception means, the microcomputer 22, the lighting control circuit 24 and the infrared LED 23. Represents the transmission control means, and the microcomputer 17 constitutes the operation control means and the focus adjustment means.

Next, another embodiment of the present invention will be described with reference to FIGS. The hardware configurations of the camera body 10 and the remote controller 20 are the same as those in FIG. In response to one operation of the transmission switch 21, the remote controller 20 of the present embodiment transmits three remote operation signals (commands) as shown in FIG. Operation start signal). The width of the distance measurement start signal, that is, the transmission time is made shorter than the width of any pulse signal forming each command. The camera body starts the distance measurement upon receiving the distance measurement start signal.

FIG. 10 is a flow chart showing the operation of the camera body 10 in this embodiment. Camera body 1
The microcomputer 17 of 0 receives the command from the remote controller 20, and stores the interval between the signal edges in the storage device 11 as described above.
When the received signal is a command from the remote controller 20, the timer is activated to measure the edge input time of the distance measurement start signal. To start time measurement (step # 202).

Thereafter, in step # 204, the distance measurement start signal is kept waiting until a predetermined time elapses (step # 203), and when the predetermined time elapses, it is determined whether a signal edge is detected (step S203). # 205). When the signal edge is not detected, it is determined whether the elapsed time from command recognition exceeds the upper limit of the time when the distance measurement signal should be input (step # 209). Returning to step 203, if the result is affirmative, the timer is stopped in step # 210 to end the processing. In this case, the distance measurement, that is, the photographing operation is not performed. In addition,
The reason why the distance measurement signal cannot be detected even though the command is recognized may be that the distance measurement signal is blocked for some reason and does not reach the reception device 16.

When it is determined in step # 205 that an edge has been detected, it is determined whether the next edge has been detected (step # 206). If denied, go to step # 209,
If affirmative, the elapsed time from the edge detection in step # 205 to the edge detection in step # 206, that is, the width of the pulse signal is the time interval (width) of the distance measurement start signal stored in the storage device 11 in advance. It is determined whether there is any (step # 207). If step # 207 is negative, the process proceeds to step # 209, and if affirmative, a shooting operation including distance measurement and focus adjustment is performed (step # 208).

According to the present embodiment, the transmission switch 21
Since a plurality of commands are transmitted in response to one operation of and the distance measurement start signal is transmitted immediately after that, distance measurement is not performed while the command in the operation is output. Even if the first operation of the transmission switch 21 is canceled and the operation for re-operation is performed as quickly as possible, when the operation is performed again, the distance measurement based on the previous operation is already completed in time. , The command by the new operation does not affect the distance measurement. In addition, according to the method of the present embodiment, as shown in FIGS. 9B to 9D, it is possible to make the distance measurement time the same regardless of which command the camera recognizes.

In the above, an example in which the width of the distance measurement start signal is made narrower than any of the command pulse signals has been shown.
For example, as shown in FIG. 11, it may be wider than any of the command pulse signals. Further, although the remote operation signal is output by controlling the lighting of the infrared LED, a known pulse modulation method used for home electric appliances may be adopted. In this case, it is possible to easily set the difference in width between the remote control signal and the distance measurement start signal.

[0032]

According to the first aspect of the present invention, the remote operation signal is transmitted from the remote operation device a plurality of times in response to one operation of the transmission operation member. The property is improved. In addition, the camera operation is performed after the second predetermined time has elapsed after receiving one of the remote device signals, and the transmission operation member is operated for the first predetermined time after the series of remote operation signals is transmitted. Since the transmission of the remote control signal is prohibited even if the remote control signal is operated, the remote control signal is not output during the operation of the light projecting / receiving unit, and the remote control signal is not adversely affected to the projecting / receiving unit. It can be surely prevented. That is, according to the present invention, it is possible to provide a camera system having a simple structure and reliably preventing adverse effects on the remote control signal without sacrificing the responsiveness of the remote control. If the first and second predetermined times T1 and T2 are set so as to satisfy T1> (n-1) * TS + Ta T2> (n-1) * TS, operation of the light projecting / light receiving means and remote operation It is possible to reliably prevent the signal from overlapping. When the manual focus adjustment mode is set, when the reception of the remote control signal is recognized, the camera operation other than the operations of the light emitting / receiving means (distance measuring means) and the focus adjusting means is performed immediately, resulting in unnecessary waiting time. There is nothing to do. When the flash photography mode is set, if the flash device is charged while the second predetermined time has elapsed after the reception of the remote control signal is recognized, the standby time can be effectively used and the shutter release can be performed. The time lag to can be shortened to the minimum. According to the invention of claim 7, in response to one operation of the transmission operation member, the remote operation signal is continuously transmitted a plurality of times, and thereafter the operation start signal is output to recognize the reception of the remote operation signal. After that, when the reception of the operation start signal is recognized, the camera operation including the operation of the light projecting / light receiving means is performed.
In addition to the same effect and advantage, the effect that the light projecting / receiving means can be operated at the same time regardless of which remote control signal the camera recognizes.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a camera system according to an embodiment of the present invention.

FIG. 2 is a time chart illustrating a transmission signal from a remote controller and a camera operation corresponding to the transmission signal.

FIG. 3 is a flowchart showing the operation of the remote controller.

FIG. 4 is a flowchart showing signal reception processing in the camera body.

FIG. 5 is a flowchart following FIG. 4;

FIG. 6 is a flowchart showing a camera operation after the shooting operation is permitted.

FIG. 7 is a flowchart following FIG. 6;

FIG. 8 is a time chart explaining a method of receiving a remote control signal from a remote controller and a signal of the camera body.

FIG. 9 is a time chart illustrating a transmission signal from a remote controller and a camera operation corresponding to the transmission signal according to another embodiment.

FIG. 10 is a flowchart illustrating a camera operation according to another embodiment.

FIG. 11 is a time chart showing a modified example of FIG. 9.

[Explanation of symbols]

 10 Camera Main Body 11 Storage Device 12 Distance Measuring Device 13 Focus Adjustment Motor Control Device 14 Photometering Device 16 Light Receiving Device 17 Microcomputer 18 Flashing Device 20 Remote Controller (Remote Operation Device) 21 Transmitting Switch 22 Microcomputer 23 Infrared LED 24 Lighting Control Circuit

Claims (11)

[Claims] 1. A remote control device for transmitting a remote control signal by infrared light in response to an operation of a transmission control member, a receiving means for receiving a remote control signal from the remote control device, and a red light toward a subject. When the remote control device recognizes that the received signal of the receiving means is a remote control signal from the remote control device, it has a light emitting / receiving means for irradiating external light and receiving reflected infrared light from a subject. In a camera system including a camera body that performs a camera operation including an operation of light / light receiving means, the remote operation device continuously outputs a plurality of remote operation signals in response to one operation of the transmission operation member. The camera main body is configured to transmit the remote control signal for transmitting the remote control signal while transmitting the remote control signal for a first predetermined time after that. A camera system capable of remote control, comprising operation control means for performing the camera operation including the operation of the light projecting / light receiving means after a second predetermined time from the reception of the reception. 2. The number of remote operation signals continuously transmitted by one operation of the transmission operation member is n (n is an integer of 2 or more), the transmission time of one remote operation signal is TS, and the projection is performed. The time required to operate the light / light receiving means is Ta,
When the second predetermined time is T1 and T2, respectively, the first and second predetermined times are set so as to satisfy T1> (n-1) * TS + Ta T2> (n-1) * TS. The camera system according to claim 1, wherein the camera system is remotely controllable. 3. The remotely controllable camera system according to claim 1, wherein the first operation among the camera operations is an operation of the light projecting / receiving unit. 4. A focus adjusting means for adjusting the focus of a photographing lens based on an output signal from the light emitting / receiving means, wherein the camera operation includes an operation of the focus adjusting means. Item 4. A camera system capable of remote control according to any one of items 1 to 3. 5. The operation control means, when the manual focus adjustment mode is set, immediately performs the camera operation excluding the operations of the light projecting / receiving means and the focus adjusting means upon recognizing reception of the remote control signal. 5. The method according to claim 4, wherein
A camera system capable of remote control described in. 6. The operation control means charges the flash device during the second predetermined time after recognizing the reception of the remote control signal when the flash photography mode is set, and the operation control means charges the flash device. 6. The remotely controllable camera system according to claim 1, wherein the camera operation is started in a state in which a predetermined time of 2 has elapsed and charging of the flash device is completed. 7. A remote control device for transmitting a remote control signal by infrared light in response to an operation of a transmission control member, a receiving means for receiving a remote control signal from the remote control device, and a red light toward a subject. When the remote control device recognizes that the received signal of the receiving means is a remote control signal from the remote control device, it has a light emitting / receiving means for irradiating external light and receiving reflected infrared light from a subject. In a camera system including a camera body that performs a camera operation including an operation of light / light receiving means, the remote operation device continuously outputs a plurality of remote operation signals in response to one operation of the transmission operation member. The camera main body has transmission control means for transmitting an operation start signal for performing the camera operation after that, and the camera body recognizes the reception of the remote operation signal and then performs the operation. A remotely controllable camera system having an operation control means for performing the camera operation including the operation of the light projecting / light receiving means when the reception of a work start signal is recognized. 8. The remote control signal is composed of a plurality of pulse signals, and the operation start signal is a pulse signal having a narrower width than any of the plurality of pulse signals. Remote controllable camera system. 9. The remote control signal comprises a plurality of pulse signals, and the operation start signal is a pulse signal having a wider width than any one of the plurality of pulse signals. Remote controllable camera system. 10. The operation control means detects the width of the pulse signal received by the receiving means, compares the detection result with a predetermined width set in advance, and determines whether the received pulse signal is the operation start signal. The remotely operable camera system according to claim 8 or 9, further comprising a signal identifying unit for identifying whether or not the camera system is operable. 11. A focus adjusting means for adjusting the focus of a photographing lens based on an output signal from said light projecting / receiving means, said camera operation including the operation of said focus adjusting means. Item 7. A camera system capable of remote control according to any one of items 7 to 10.