JP2001013577A - Remote control device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set an exposing condition by replacing photometric data by a camera main body side by the photometric data by a remote control device side with a simple constitution in the case of performing the photographing operation of a camera by a remote control while having a photometric function by the simple operation. SOLUTION: This device is provided with a time measuring part 5 and a storage part 3 in which measured photometric data are to be stored. Then, after a photometry requesting switch of an operation part 4 in which two circuits are provided is operated, when a release requesting switch is operated after waiting for a prescribed time, a release starting signal in company with photometric data is transmitted to a camera side and when the release requesting switch is operated without waiting for the prescribed time, only the release starting signal is transmitted to the camera and the exposing condition is to be set by replacing the photometric data by the camera main body side by the photometric data by the remote control device side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device having a photometric function for remotely photographing a camera.

[0002]

2. Description of the Related Art In general, there is known a remote control device (hereinafter, referred to as a remote control) capable of performing photographing by remote control from a position away from a camera body using infrared light or the like.

Among these remote controllers, there is a remote controller having a function other than the exposure operation, for example, a remote controller having a photometric function as described in Japanese Patent Application Laid-Open No. Hei 5-232577 proposed by the present applicant. .

In this technique, a photometric device is provided on each of a remote control side and a camera side, and at the time of photographing, photometric data measured by the remote control side is transmitted to the camera side, and the photometric data (the remote control side) or the remote control is transmitted. This is a technology for improving color reproducibility by controlling exposure based on photometric data of both cameras and cameras.

[0005] In the above remote controller with photometric function, Japanese Patent Application Laid-Open No. 10-10614 presents a specific configuration example of the remote controller, in which a plurality of switches are provided on a remote controller main body, and a first switch member is operated. And transmits a photometric value and a release signal to a camera by operating a second switch member.

[0006]

However, in the technology disclosed in Japanese Patent Application Laid-Open No. Hei 5-232577, when the release switch of the remote controller is pressed to the second stage, the photometric data is always transmitted to the camera, and the photometric data is transmitted. Exposure is performed. Therefore, when remote control is performed, exposure cannot be performed using photometric data stored in the camera.

Normally, when taking a picture with a remote control, the photographer operates the remote control by holding it in his hand. At this time, if the photometry unit of the remote control is not facing the subject and faces in another direction, the photometry is performed. In this system in which the switch for performing the operation and the switch for performing the release are pressed at a stretch, the subject itself is not measured.

In the remote controller disclosed in Japanese Patent Application Laid-Open No. 10-10614, the number of operation members increases, and the remote controller becomes large. On the other hand, if the miniaturization is to be maintained, the operation becomes complicated.

Further, when the release signal is not recognized by the camera when the release signal is transmitted by the remote controller, or when the photographing is repeatedly performed under the same photographing condition,
There was a problem that the photometric lock had to be performed again.

Therefore, the present invention is a remote control device having a photometric function by a simple operation and performing a photographing operation of a camera by a remote control. The photometric data by the remote device side and the photometric data by the camera body side have a simple configuration. It is an object of the present invention to provide a remote control device for a camera that can set an exposure condition by switching the camera.

[0011]

In order to achieve the above object, the present invention provides a photometric device for measuring the brightness of a subject, a storage device for storing a photometric value output from the photometric device,
Transmitting means for transmitting a camera release start signal and a photometric value signal stored in the storage means to the camera body; switch means having first and second switch members; A timer means for starting time measurement in response to an operation start; and activating the photometric means in response to an operation of the first switch member of the switch means, storing an output of the photometric means in the storage means. Control means for controlling the transmission of the release start signal and / or the photometric value signal of the photometric means to the camera body in response to the operation of the second switch member of the switch means; When the time from the operation of the first switch member to the operation of the second switch member is less than or equal to the predetermined time, a response is made to the operation of the second switch member. When only the release start signal is transmitted to the camera and the second switch member is operated for more than the predetermined time after the first switch member is operated by the timing means, the second switch is operated. A remote control device for a camera that transmits the photometric value and the release start signal to a camera body in response to an operation of a member.

Further, the photometric means for measuring the luminance of the subject, a switch means having first and second switch members, and the photometric means in response to an operation of the first switch member of the switch means. Operating means for storing a photometric value signal output of the photometric means, first timekeeping means for starting timekeeping in response to the start of operation of the first switch member, and the second timepiece of the switch means. Second timer means for starting clocking after a release start signal is output by the switch member, and time from the operation of the first switch member to the operation of the second switch member by the first timer means is set to If the time is less than or equal to the predetermined time of 1, the camera transmits only a release start signal to the camera in response to the operation of the second switch member, and the first operation unit provided by the first timer means. If the time from when is operated to when the second switch member is operated exceeds the first predetermined time, the photometric value and the release start are started in response to the operation of the second switch member. Transmission control means for controlling transmission so as to transmit a signal to the camera body; and when the time measured by the second time measurement means exceeds a second predetermined time, the photometric value stored in the storage means is changed. A remote control device for a camera, comprising: initialization means for initializing.

In the camera remote control device (remote controller) having the above structure, photometric data to be measured by the remote controller and stored in the remote controller is held in the memory for a predetermined time, and is received by the camera. If it is not possible, if a transmission operation of a release start signal is performed, photometry data does not need to be locked and photometry data is transmitted again. When the predetermined time is exceeded, the photometric data is cleared.

[0014] In the remote controller, after operating the first switch member for requesting photometry, a predetermined time is waited, and then the operation of the second switch member is performed. When the second switch member is operated, a release start signal accompanying photometric data is transmitted to the camera. Is done. If the first switch member and the second switch member are operated without waiting for a predetermined time, only the release start signal is transmitted to the camera.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a remote control device (remote control) according to the present invention.
FIG. 3 is a diagram showing a conceptual configuration of FIG. The remote control device includes a photometric unit 1 for measuring the illuminance of a subject, a transmitting unit 2 for transmitting a predetermined signal to a camera body, a storage unit 3 for storing photometric values measured by the device, and a photometric and photographing request. The control unit 4 includes an operation unit 4 including operation members for performing the operation, a time measurement unit 5 for measuring a predetermined time described later, and a control unit 6 for performing sequence control of these components and various types of arithmetic processing.

More specifically, the photometric unit 1 is a component for measuring the illuminance of a subject. For example, an "incident photometric method" such as that performed by a spot meter that directly performs photometry at a certain position near the subject under steady light. Is used.

The transmitting section 2 transmits to the camera body a photometric value measured by the present apparatus and a release request signal by a photographer's operation. The storage unit 3 is a memory element to which data can be electrically written, and stores the photometric value measured by the photometric unit 1. If the data can be temporarily stored, it can be volatile or nonvolatile. It may be a memory. The operation unit 4 includes an operation member for instructing a photometry request and an operation member for instructing a release request to the camera.

The time measuring unit 5 transmits the time from the photometry start request to the release request start and the release start signal to the camera by the photographer operating the operation unit 4 and then stores the data in the storage unit 3. Is measured up to a predetermined time for which is held.

In the remote controller configured as described above,
When the user manually operates the photometry request member of the operation unit 4, the control unit 6 recognizes the above operation, starts the timer of the time measurement unit 5, and causes the photometry unit 1 to perform photometry.

The obtained illuminance information is converted into photometric data (luminance information) by a predetermined process in the control unit 6 and is temporarily stored in the storage unit 3. The control unit 6 detects the release request operation of the operation unit 4 even during the photometry, and when the release request operation is obtained, the time counted by the time measurement unit 5 is longer than a predetermined time. If there is, the release start signal and the photometric data stored in the storage unit 3 are transmitted to the camera. If the release start signal is shorter than a predetermined time, only the release start signal is transmitted to the camera.

Next, FIG. 2 shows an example of the external configuration of the remote controller according to the present embodiment.

This remote control includes a light projecting section 7 composed of an infrared light emitting diode for projecting measured photometric data and a release start signal, which will be described later, to a camera (not shown) as infrared light, and incident light. Is provided with a light-receiving unit 8 for diffusing the light into a hemispherical light sphere and causing the light to enter, and a switch 9 for transmitting photometric data and a release start signal.

The configuration of the remote controller is shown in the block diagram of FIG.

This remote control has an infrared light emitting diode 7
Are driven by the driver 10 under the control of the CPU 13. The photometric data and the release start signal are output by the infrared light emitting diode 7 as infrared light. The CPU 13
The light receiving section 8 is formed of a light receiving sensor by the above control, and is provided with a photometric circuit 11 for converting a received optical signal into electrical photometric data. This photometric data is input to the CPU 13. The switch 9 is connected to the CPU 13 and includes two switches 9a and 9b.

Further, there is provided a notifying unit 12 including an LED, a buzzer, and the like for notifying the remote controller operator that the operation performed is normally performed. The CPU 13
Has a memory unit 14 for storing photometric data,
A timer counter 15 for measuring time is incorporated.

A memory section 14 for storing photometric data in the CPU 13 transmits a first memory for temporarily saving the photometric data measured by turning on the switch 9a and a camera when the switch 9b is turned on. A second memory is provided. The photometric data measured when the switch 9a is turned on is first stored in the first memory, but when the switch 9a is kept pressed for a predetermined time, the second photometric data is stored in the first memory.
The photometric data is transferred to the memory of.

The switch 9 is a first switch pressed by the user.
In response to the stroke being pressed, the switch 9a is turned on, the timer counter 15 in the CPU 13 is started, and the photometric operation is started. The CPU 13 stores the obtained photometric data in the memory unit 14. When the switch is further pressed, the switch 9b is turned on in response to the pressing of the second stroke, and after the switch 9a is turned on, the switch 9b is turned on.
In accordance with the time until b is turned on, the stored photometric data and the release start signal, or only the release start signal, are emitted to the camera side as infrared light by the infrared light emitting diode 7 and transmitted. After the transmission, the timer counter 15 is restarted, and when a predetermined time elapses or the switch 9a is kept turned on for a predetermined time, the photometric data stored in the CPU 13 is initialized.

The control of the remote controller will be described with reference to the flowchart shown in FIG.

After the reset start, first, input / output setting of the CPU 13, setting of resources, initial setting such as clearing of data stored in the memory, and the like are performed (step S1). Thereafter, the on / off state of the switch 9a is monitored (step S2).
Start the timer in (step S3).

Then, photometry is performed (step S4), and the obtained photometry data is stored in a first memory in the CPU 13 (step S5).

Subsequently, the on / off state of the switch 9b is monitored (step S6). If the switch 9b is not turned on at this time, it is determined whether the timer started in step S3 has passed a predetermined time (step S7). If the predetermined time has passed (YES), the photometric value stored in the first memory is reset. The data is transferred to the second memory (step S8), the notification unit 12 is operated (step S9), and the process proceeds to step S5.
The user is informed that the transmission of the photometric data stored in is permitted, and the process returns to step S6.

In the determination in step S6, the switch 9b
Is turned on, it is determined whether photometric data is stored in the second memory (step S10). If the photometric value is present in the second memory (YES), the photometric data in the second memory is determined. The data and the release start signal are transmitted to the camera (step S11). On the other hand, if there is no photometric data in the second memory (NO), only the release start signal is transmitted to the camera (step S12).

After transmitting the release start signal,
The timer in the CPU 13 is started again to start counting time (step S13). Next, the on / off state of the switch 9a is monitored during counting (step S14), and when the switch 9a is turned on, the process returns to step S2. However, if the switch 9a is not turned on, it is determined whether the counted timer time has reached a predetermined time (step S15). If the predetermined time has elapsed (YES), the photometric data stored in the second memory is determined. Is cleared (step S16), and the mode is shifted to the stop mode for reducing the power consumption of the remote controller (step S17).
The process returns to step S2. Thereafter, when the switch 9a is turned on again, the process exits the stop mode and repeats the sequence from step S3.

Here, the waveform of the transmission code used for transmission will be described with reference to the timing charts shown in FIGS. The transmission format in the present embodiment uses a known format “tribit code”.

This is because L is equal to the waveform shown in FIG.
If the time of the low level is less than the half cycle of the cycle T, this transmission data means “0”, while the time of the low level is equal to or more than the half cycle of the cycle T as shown in the waveform of FIG. If so, this transmission data means "1". For example, the transmission code waveform shown in FIG.
1 ".

FIG. 6 shows a bit configuration example of the transmission code according to the present embodiment.

For example, assuming that the photometric range is EV3 to EV17 and the photometric resolution is 1/8 EV, in order to send photometric data from the remote controller, the integer field has 4 bits (b6 to b3) and the decimal field (b6 to b3). b2 to b0) are composed of a minimum of 7 bits as shown in the figure, which is composed of 3 bits, and requires a transmission code to which a start bit and an end bit are added before and after.

FIG. 7 shows a communication code for the CPU 13 to discriminate whether the signal transmitted from the remote controller is only a release start signal or a release signal accompanied by photometric data.

For example, as shown in FIG. 7A, when a signal "00" is sent from the remote controller, only the release start signal is provided. On the other hand, in the case of a release start signal accompanied by photometric data, as shown in FIG.
A signal of "01" is sent to make the camera recognize that it is accompanied by photometric data, and the photometric data is transmitted after a predetermined time has elapsed.

By such transmission, when a release start signal accompanied by photometric data is received so that the remote control signal does not become noise during AF distance measurement, a signal is continuously input after the release start signal is received. Since it is known that the distance measurement is performed, it is possible to wait a predetermined time until the distance measurement starts.

FIG. 8 is a diagram showing an example of the configuration of the above-described remote controller and a camera that receives and processes the remote controller signal.

This configuration comprises a remote controller 21 and a camera 22.

The remote controller 21 transmits data set by the operator to the camera body and transmits a predetermined transmission code to determine the exposure start timing of the camera.

The camera 22 has a CP for controlling each component.
U23 and an LCD display unit 24 provided outside the camera
And an AFIC for obtaining light intensity obtained by dividing a subject image into two parts
25 and a data bag 26 for imprinting date and the like.
A strobe 27 for emitting auxiliary light, an ISO input unit 28 for reading film sensitivity information, and a switch input unit 2 for detecting the operation state of a switch provided on the camera.
9, an EEPROM 30 for storing correction data, a light receiving circuit 31 for receiving a signal transmitted by the remote controller 40 with infrared light, and a photometric circuit 32 for measuring the brightness of the subject by [reflection light type]. And a motor driver 33 for driving the various motors under the control of the CPU 23.

The motors driven by the motor driver 33 include an LDM 35 for driving a focus unit 34 in a photographic lens (not shown) and a zoom unit 36 for changing the focal length of the photographic lens. ZM37
A winding unit 38 for winding the film; a spring charge for running a focal plane shutter in a shutter unit 39; and a WSM4 for driving a mirror mechanism for switching a photographic light beam to a finder or a film surface.
0, aperture section 41 for limiting the amount of light reaching the film surface
There is an AVM 42 for driving the.

The components will be described in detail.

The CPU 23 of the camera 22 executes sequential control sequentially based on a program stored in a ROM (read only memory) provided therein.
Thus, the operation of the peripheral integrated circuit, which is a component of the entire camera, is generally managed.

The LCD display section 24 is a display section comprising a liquid crystal display element provided outside the camera,
Based on the control signal, the mode display of the camera and the display of the number of film frames are performed.

The AFIC 25 has a charge storage type sensor array, and on this sensor array, divides the subject image which has passed through the photographing lens and enters into two parts, and receives each image.
A value obtained by quantizing the light intensity of these two images is detected and the CPU
23. Then, the CPU 23 executes the focusing unit 34 by using a known technique of “phase difference detection method”.
For optimal focus adjustment of the taking lens.

The strobe 27 irradiates the subject with strobe light during exposure when the brightness of the subject is low or when the subject is in a backlight state. ISO input unit 28
Reads film sensitivity information displayed on a film case or a film cartridge loaded in a camera.

The switch input unit 29 detects the operating states of a key switch (not shown) and a mechanical switch that opens and closes in accordance with the operation of the camera. The key switch is a switch for so-called camera release, zoom up / down, setting of a camera mode, and the like.

The EEPROM 30 is a non-volatile memory, which is a memory in which correction data for correcting photometric values and AF data that vary for each camera is measured at the time of manufacture and stored in advance. Further, the light receiving circuit 31 converts the signal transmitted from the remote
It has the function of transferring to The photometric circuit 32 detects the luminance of the reflected light from the subject that has passed through a photographic lens (not shown) by the “reflected light method”, and determines an aperture value and a shutter speed value during automatic exposure.

FIG. 9 shows a detailed configuration example of the light receiving circuit 31 described above.

The light receiving circuit 31 includes a light receiving element 51 comprising a photodiode, a preamplifier 52 for converting a signal light current from the light receiving element 51 into a voltage, a BPF (band pass filter) 53 for passing a predetermined frequency band. , BP
A detection circuit 54 for detecting an output signal from the F53, and an integration circuit 55 for removing a carrier frequency component by an integration process
And a waveform shaping circuit 56 for performing a predetermined waveform shaping process.

In the light receiving circuit 31 thus configured, the light receiving element 51 is a photodiode having sensitivity only in the infrared light region, and receives a signal composed of infrared light transmitted from the remote controller 21. The light receiving element 51 is arranged on the front of the camera 22 and normally receives a remote control signal from near the front of the camera 22.

However, the photometry data of the subject is
In the camera according to the present embodiment that transmits light from the camera, it is more preferable that the light receiving unit be configured to be able to receive light even from the rear surface of the camera in consideration of user's convenience.

The output of the light receiving element 51 is
2 is input. The preamplifier 52 has an HPF (high-pass filter) characteristic, cuts a stationary light component and a commercial frequency light source noise included in the photocurrent of the light receiving element 51, and converts only the signal photocurrent into a voltage. . The output of the preamplifier 52 is input to a subsequent BPF (bandpass filter) 53. The BPF 53 has a voltage gain peak at the same center frequency as the carrier frequency, and cuts noise at frequencies lower and higher than the carrier frequency.

Next, the output from the BPF 53 is input to a detection circuit 54 and detected, and then input to an integration circuit 55 to perform integration processing to remove the carrier frequency component. Further, the output of the integrating circuit 55 is input to a waveform shaping circuit 56 at a subsequent stage, where the output is subjected to a predetermined waveform shaping process, and then input to the CPU 23 described above.

In this embodiment, the light emitting element and the light receiving circuit using infrared light are used. However, the present invention is not limited to this. For example, a remote control transmitter using "radio waves" , And the accompanying receiving circuit can be similarly applied.

Referring to the flowchart shown in FIG.
The operation of the camera that has received the signal from the remote controller 21 will be described.

First, the CPU 23 reads from the operating state of the switch input section 29 whether the mode is the self / remote control mode or the normal photographing mode (step S21).

It is determined whether the read mode is the self / remote control mode (step S22). If the mode is set to the remote control mode (YES), the remote control signal is received, and the release start signal and the photometric data are received. do it,
The photometric data is stored in a memory (step S23).

Next, it is determined whether or not photometric data has been transmitted from the remote controller at the time of reception (step S24). If photometric data has not been transmitted from the remote controller 21 (N
O), photometry is performed by the photometry circuit 33 of the camera 22, photometric data is obtained and stored in the memory (step S25).
On the other hand, when the photometric data is transmitted from the remote controller 21 (YES), the aperture value and the shutter speed value are calculated in accordance with the exposure mode described later based on the photometric data or the photometric data obtained by the photometric circuit 33 (step S26). ).

Various types of camera such as an exposure control mode including "manual", "aperture priority" and "shutter speed priority", and pictogram modes such as "night scene mode", "portrait mode", "sports mode", and "scenery mode". It is determined whether a switch for selecting exposure control has been selected (step S27).

If it is determined that any one of the modes is selected (YES), an exposure parameter corresponding to the selected mode is set (step S28), and step S3 is performed.
Move to 4. On the other hand, in step S27, if a mode other than the pictogram mode is selected (NO), it is determined whether the aperture change switch is on (step S27).
29). If the aperture change switch is off (N
O), it is determined whether or not the shutter speed change switch is ON (step S30). However, if the aperture change switch is ON (YES), it is determined whether or not the aperture priority mode is set (step S31).

If the determination in step S31 is not "aperture priority mode" (NO), it is determined whether or not the manual mode is set (step S32). If the manual mode is set (YES), only the aperture value is set. Is changed (Step S33), and the routine goes to Step S30. On the other hand, if the manual mode has not been set (NO), the process directly proceeds to step S30. If it is determined in the step 31 that the aperture stop mode is “YES”, the priority aperture is changed, and
In step S33, the shutter speed is also changed based on the stored photometric data.

If it is determined in step S30 that the shutter speed change switch is off (NO),
It is determined whether or not the exposure compensation switch is on (step S34). If the shutter speed change switch is on (YES), it is determined whether or not the shutter priority mode is set (step S35).

If it is determined in step S35 that the mode is not the "shutter priority mode" (NO), it is determined whether the mode is the "manual mode" (step S36). If the determination is "manual mode" (YES), the shutter speed value is changed (step S37), and the routine goes to step S34. On the other hand, if the mode is not the “manual mode” (NO), the process directly proceeds to step S34. However, if the determination in step S35 is "shutter priority mode" (YE), the process moves to step S37 to change the shutter speed value and change the aperture value based on the stored photometric data. do it,
The process moves to step S34.

If it is determined in step S34 that the exposure compensation switch is ON (YES), the exposure compensation value is changed (step S38). On the other hand, if the exposure compensation switch is not turned on (NO), or after changing the exposure compensation value, the set exposure parameters such as the aperture value, shutter speed value, and exposure compensation information are displayed on a display unit such as an LCD. (Step S39).

Next, it is determined whether the release switch has been pressed or a release start signal has been transmitted from the remote controller (step S40).

If it is determined that neither the release switch is pressed nor the release start signal is transmitted (NO), the process returns to step S21. On the other hand, if the release switch is pressed or a release start signal is received (YES), a release operation is executed (step S).
41), after clearing the photometric data obtained from the remote controller, the process returns to step S21.

Referring to the flowchart shown in FIG.
"Remote control signal reception" of step S23 shown in FIG.
Will be described. First, the receiving circuit 31
It is determined whether or not has received a remote control signal (step S51). If it has not been received (NO), the process ends immediately. On the other hand, if received (YES), FIG.
Is restored (step S52).

Then, it is determined from the combined signal whether or not the release start signal is accompanied by photometric data (step S5).
3). If it is determined in this determination that the release start signal is accompanied by photometric data (YES), this photometric data is
3 is stored in the designated storage area (step S5).
4). Thereafter, the release request flag is set (step S55), and after returning to the main loop, the process is shifted to the release process.

According to the present embodiment, it is possible to separate the remote controller with the photometric function from the conventional remote controller without increasing the number of operation members in the remote controller and without increasing the number of modes in the camera.

Further, since the photometric data stored in the remote controller is held for a predetermined time, even if the camera cannot receive the signal from the remote controller under some conditions, the remote controller operates to transmit the release start signal. Is performed, the photometric data can be transmitted again, and the photometric lock does not need to be performed.

As described above, according to this embodiment, if the release request switch is operated after a predetermined time has elapsed after the operation of the photometry request switch, a release start signal is transmitted to the camera along with the photometry data. You. Also, if you operate the release request switch without waiting for a predetermined time,
Only the release start signal can be transmitted to the camera.

With such a remote control operation, the exposure control based on the photometric data by the remote control and the data stored in the camera can be performed with a simple configuration and operation without particularly providing a plurality of operation members on the remote control. It is possible to switch exposure control using photometric data.

Although the above embodiments have been described, the present invention includes the following inventions.

(1) Photometric means for measuring the luminance of the subject, and storage means for storing the photometric value of the photometric means,
Transmitting means for transmitting the photometric value to the camera body; a first operating member for performing a photometric request; a second operating member for performing a release request; and a time counting time from the start of operation of the first operating member. A measuring means, a control means for controlling a sequence in accordance with an operation of the operating member, and a photometric value from the photometric means stored in the storage means in response to an operation of the first operating member; In the remote control device for a camera that transmits the photometric value and the release signal to the camera body by the transmission unit by operating the operation member, the second operation member is operated after the first operation member is operated. If the time until the release is less than the predetermined time, only the release signal is transmitted to the camera, and the time from when the first operation member is operated to when the second operation member is operated is transmitted. If There is more than a predetermined time,
A remote control device for a camera, wherein the photometric value and the release start signal are transmitted to a camera body.

(2) Photometric means for measuring the luminance of the object, storage means for storing the photometric value output from the photometric means, a camera release start signal and a photometric value signal stored in the storage means. Transmitting means for enabling transmission to the camera body, switch means having first and second switch members, time measuring means for starting time measurement in response to the start of operation of the first switch member, and In response to the operation of the first switch member, the photometric unit is operated, the output of the photometric unit is stored in the storage unit, and in response to the operation of the second switch member of the switch unit, Control means for controlling the release start signal and / or the photometric value signal of the photometric means to be transmitted to the camera body.
If the time from the operation of the switch member to the operation of the second switch member is less than or equal to a predetermined time, the second
In response to the operation of the switch member, only the release start signal is transmitted to the camera body, and the first timer
If the time from when the operating member is operated to when the second switch member is operated exceeds the predetermined time, the photometric value and the release start are started in response to the operation of the second switch member. A camera remote control device for transmitting a signal to a camera body.

(3) In the remote control device for a camera according to the above (2), the switch means outputs a first signal in accordance with the first operation amount and a second operation amount following the first operation amount. Generates a second signal.

[0083]

As described above in detail, according to the present invention, there is provided a remote control device having a photometric function by a simple operation and performing a photographing operation of a camera by a remote control. It is possible to provide a camera remote control device capable of setting exposure conditions by switching between data and photometric data by the camera body.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conceptual configuration of a remote control device (remote control) of the present invention.

FIG. 2 is a diagram illustrating an example of an external configuration of a remote controller illustrated in FIG. 1;

FIG. 3 is a block diagram showing a configuration of a remote controller shown in FIG.

FIG. 4 is a flowchart for describing control of a remote controller.

FIG. 5 is a timing chart for explaining a waveform of a transmission code used for transmission from the remote controller to the camera.

FIG. 6 is a diagram illustrating a bit configuration example of a transmission code according to the present embodiment.

FIG. 7 is a diagram showing an example of a communication code for distinguishing a release start signal.

FIG. 8 is a diagram illustrating a configuration example of a remote controller and a camera that receives and processes a remote controller signal according to the present embodiment.

9 is a diagram illustrating a detailed configuration example of the light receiving circuit illustrated in FIG. 8;

FIG. 10 is a flowchart for explaining the operation of the camera on receiving a signal from the remote controller in the embodiment.

FIG. 11 is a flowchart illustrating a subroutine of “remote control signal reception” shown in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Photometry part 2 ... Transmission part 3 ... Storage part 4 ... Operation part 5 ... Time measurement part 6 ... Control part 7 ... Light emitting part (infrared light emitting diode) 8 ... Light receiving part 9, 9a, 9b ... Switch 10 ... Driver 11 photometric circuit 12 notification unit 13 CPU

Claims (3)

[Claims] 1. A photometric device for measuring the brightness of a subject, a storage device for storing a photometric value output from the photometric device, a camera release start signal and a photometric value signal stored in the storage device. Transmitting means for enabling transmission to the main body; switch means having first and second switch members; timer means for starting time measurement in response to the start of operation of the first switch member; In response to the operation of the first switch member, the photometric means is operated, the output of the photometric means is stored in the storage means, and the output of the second
Control means for controlling the transmission of the release start signal and / or the photometric value signal of the photometric means to the camera body in response to the operation of the switch member. If the time from the operation of the switch member to the operation of the second switch member is equal to or shorter than the predetermined time, only the release start signal is transmitted to the camera in response to the operation of the second switch member; When the second switch member is operated for more than the predetermined time after the first switch member is operated by the timer means, the photometric value and the light measurement value are responded to the operation of the second switch member. A camera remote control device for transmitting a release start signal to a camera body. 2. A photometric device for measuring the brightness of an object, a switch device having first and second switch members, and a photometric device in response to an operation of the first switch member of the switch device. Operating means for storing a photometric value signal output of the photometric means; first time measuring means for starting time measurement in response to the start of operation of the first switch member; A second time counting means for starting time counting after a release start signal is output by the switch member; and a time from the operation of the first switch member to the operation of the second switch member by the first time counting means. If the time is equal to or less than the predetermined time of 1, the camera transmits only a release start signal to the camera in response to the operation of the second switch member, and the first operation member by the first timer means. If the time from the operation to the operation of the second switch member exceeds the first predetermined time, the photometric value and the release start signal are transmitted in response to the operation of the second switch member. Transmission control means for controlling transmission of the photometric value to the camera body, and when the time measured by the second time measurement means exceeds a second predetermined time, the photometric value stored in the storage means is initialized. Remote control device for a camera, comprising: 3. The storage means has a first storage memory and a second storage memory, and stores the photometric value of the photometric means in the first storage in response to an operation of the first switch member. Storage control means for storing the measured light value in the memory, and for transferring the photometric value to the second storage memory when the time measured by the time measurement means reaches a predetermined time; and transferring the measured light value to the second storage memory. 2. The remote control device for a camera according to claim 1, further comprising: display means for displaying that the photometric value can be transmitted in response to the operation.