JPH0675274A - Signal inputting and outputting controller for camera - Google Patents

Abstract

PURPOSE:To easily set different interlocking functions with the same camera and to improve the starting force of interlocking photographing by providing plural interlocking modes on the camera and providing a mode setting means selecting any of the interlocking modes. CONSTITUTION:Two cameras are electrically connected so that they are interlocked. A mode selecting means 1 selecting any of the plural interlocking modes concerning the ways of interlocking, and the mode setting means 2 setting the mode are provided, and an executing means executing an interlocking action in accordance with the set mode. A signal controlling means 11 decides the timing of a release requiring signal outputted outward in accordance with the interlocking mode set at the mode setting means 2, the inputting condition of a timing signal, and the signal from a release sequence controlling means 10 when a release operating means 9 is operated. Thus, the different interlocking functions can be set on the camera, so that the interlocking function in the case of connecting two cameras can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal input / output control device for a camera for electrically connecting the cameras to each other to perform an interlocking operation.

[0002]

2. Description of the Related Art Conventionally, the same subject is often photographed using two cameras. The purpose is to take pictures at the same time with different focal lengths of the taking lens even if the subject is the same, or to take two identical pictures in order to eliminate the risk of failure. However, in order for the photographer to do that, attach a cable release etc. to each of the two cameras,
It is necessary to press the release button of the cable release with both hands at the same time, so both hands are blocked,
There was a problem that the timing did not always match exactly.

Therefore, in recent years, it has been proposed to electrically connect two cameras so that the release of the cameras is linked by an electrical signal. Specifically, in a camera with an electric hoisting function,
A terminal for inputting a signal for starting the release from the outside,
The camera, which is provided as a single terminal that also functions as a terminal that outputs to the outside in synchronization with its own release operation, and the release button of the camera body is operated, releases the camera to the outside from the terminal in conjunction with its own release operation. Output signal,
The camera, which receives a release signal from the outside through the terminal without operating the release button of itself, starts the release operation. Then, the two cameras can be electrically connected by a cable or the like, and by pressing the release button of one of them, the two cameras can interlock to perform the release operation.

[0004]

By the way, by interlocking two cameras by exchanging electrical signals, the interlocking method is not limited to simultaneous shooting as in the case of manual operation in the past. Various interlocking methods are possible. For example, even in the same simultaneous shooting, a linked mode in which the state of pressing the release button is linked at the same time (hereinafter, this mode is referred to as “asynchronous linked mode”) and a linked mode in which the timing of the actual release operation itself is linked The mode is called “simultaneous interlocking mode”). The difference between the two becomes conspicuous when a mode is selected in which a release operation is started only when the focus is in focus even when the release button is pushed in a recent AF camera. In other words, in the asynchronous interlocking mode, the signals requesting the release of the two cameras are only synchronized, and as a result, the timings at which the release operations are started are not necessarily the same. After both cameras wait for the timing at which they can enter the release operation, the release operation is actually performed at the same time.

In order to cover the limit of the frame speed of continuous shooting with one camera, a linked mode in which two cameras are alternately released (hereinafter, this mode is referred to as "alternate linked mode") It is considered). Further, a mode in which the two cameras are operated independently without being interlocked with each other with the two cameras still connected by a cable (hereinafter, this mode is referred to as “non-interlocking mode”) may be required.

An object of the present invention is to propose a camera which has a plurality of camera interlocking modes and can select any one of them.

[0007]

In order to solve the above-mentioned problems, the present invention relates to a camera which electrically connects two cameras and interlocks them, and provides a plurality of interlocking modes regarding interlocking modes. It comprises a setting means for selectively setting any one mode, and an executing means for executing the interlocking operation according to the mode set by the setting means.

[0008]

In the present invention, the camera is provided with a plurality of interlocking modes, and the mode setting means for selecting any one of them is provided. Therefore, different interlocking functions can be easily set in one camera, The mobility of linked shooting when two cameras are connected is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 2, 3 and 4 are block diagrams showing the construction of a specific electric circuit according to an embodiment of the present invention. 2 to 4, reference numeral 100 denotes the same camera body that forms the core of the present invention. 2, 200 in FIG. 2 is another camera body, 300 in FIG. 3 is a timer release device connectable to the camera, 500 is a connection cable connecting the camera 100 and the camera 200, and 400 in FIG. 4 is interlocking connectable to the camera. It is a mode selection device.

First, the internal structure of the camera 100 will be described. The connector 111 has 9 terminals, BAT is a terminal for outputting a primary power source from the battery 103 of the camera via the diode D101, and VCC is a secondary power source output from the output voltage of the DC-DC converter 102 via the diode D102. It is the terminal to do. WUP is the input port P1 of the microcomputer 101
It is directly connected to 1 and is also connected from the output port P01 to the collector of the transistor Q101 via a resistor.
The RLS is directly connected to the input port P12 of the microcomputer 101, and is also connected to the collector of the transistor Q102 from the output port P02 via a resistor. BUSY is directly connected to the input port P13 of the microcomputer 101, and is also connected to the collector of the transistor Q103 through the resistor from the output port P03. RX is connected to the serial input terminal RXD of the microcomputer 101, and TX is connected to the serial output terminal TXD. SGND is a signal ground terminal and PGND is a large current ground terminal. The DC-DC converter 102 inputs the battery 103 to the IN terminal as the primary power source, and selectively outputs the secondary power source from the output terminal OUT according to the input level of the CTL terminal connected to the output port P04 of the microcomputer 101. . The power supply terminal VDD of the microcomputer 101 is connected to the power supply from the battery and the secondary power supply via the diodes D103 and D104, respectively. SW101 and SW102 are two-step push switches that switch in tandem with the release button of the camera body, SW101 is a power start switch that turns from off to on when the button is half-pressed, and SW102 that turns from off to on when you press it fully. It is a switch. L
Reference numerals 101 and L102 are magnets for holding the front and rear curtains of the shutter, respectively, and 104 is an interface circuit for amplifying signals from the output ports P05 and P06 of the microcomputer 101 to magnet energization currents. Reference numeral 106 is a motor that drives a mechanism for the release operation, and 105 is an interface circuit for amplifying signals from the output ports P07 and P08 of the microcomputer 101 to a motor energization current.

FIG. 3 shows an example in which a timer release device 300 is connected to the camera 100 described above via a connector 111. In the timer release device 300, 5 terminals out of 9 terminals on the camera side are connected, TBAT, TVCC,
WUP, TRLS, and TGND are the terminals on the camera side BAT, VCC, WU
Corresponds to P, RLS, SGND. Timer circuit 301 has terminal TB
Power is supplied from the power supply in which AT and TVCC are connected in parallel, and terminal IN
To the falling edge of the switch SW302, and outputs an L level signal from the terminal OUT for a predetermined time from that point.
The terminal OUT is directly connected to the terminal TRLS which is connected to the camera and serves as a release request signal for the camera.
SW301 is a power supply start switch for the camera which is output to the terminal TWUP as it is, and SW301 and SW302
Is a two-stage push switch operated by one button.

The operation when the camera 100 and the timer release device 300 are combined in FIG.
This will be described with reference to the flowchart of the microcomputer 101 of the camera 100 shown in FIG. First, the flowchart of FIG. 11 will be described. In the flow of FIG. 11, the battery 103 is loaded into the camera 100, the program starts, and in step # 101, the level of the input port P15, that is, whether the power start switch SW101 is turned on,
In step # 102, it is determined whether or not the level of the input port P11, that is, the terminal WUP of the connector 111 is L. If at least one is L, the output port P04, that is, the CTL terminal of the DC-DC converter is determined in step # 103. It is set to L, and the secondary power supply of the DC-DC converter is activated. Then, in step # 104, the timer TPH in the microcomputer is reset to 0. This timer TPH is a timer for measuring the power retention time. Here, since the power activation switch or the terminal WUP requested activation or extension of the power, the power retention timer is reset. Next, in step # 105, it is determined whether or not the level of the input port P14, that is, the release switch is on. If this is L (on), step # 1
The flag $ MST is set at 07, and if H (off), the flag $ MST is cleared at step # 106. This flag is a flag for temporarily storing that the release switch has been turned on by the release button operation of the camera 100 and a release request has been issued. The release request to the camera 100 is issued when the release switch is turned on by operating the release button of the main body and when the connector 111
There are two types when the L level is input from the terminal RLS of the, but depending on which factor activated the release operation, the former case is called the "master state" and the latter case is called the "slave state". Distinguish between states. The flag $ MST is a flag for immediately determining whether the release operation is in the master state or the slave state when the release is actually activated. After the flag $ MST is set in step # 107, the level of the input port P13, that is, the terminal BUSY is set in step # 108.
Determine the input level of. The input signal from the terminal BUSY is
This is a signal indicating that release is prohibited in the master state. It is defined that the release is permitted when the H level is set and the release is prohibited when the L level is set. Therefore, when the terminal BUSY is H here, step # 11
0, and when the terminal BUSY is at L level, step # 112
Fly to and cancel the release start. Meanwhile, step #
If the release switch is off at 105, after step # 106, at step # 109 the input port P12,
That is, the level of the terminal RLS of the connector 111 is determined,
In the case of L, the process proceeds to step # 110 which is the same as when the release switch was turned on in step # 105. In step # 110, it is determined whether or not the focus is adjusted to a focused state by a focus adjusting means (not shown). If the subject is out of focus, the process proceeds to step # 112, but if the subject is in focus, the process proceeds to step # 11.
The release subroutine is executed at 1 and the actual release operation starts. The release subroutine will be described later.
After that, in step # 111, it is determined whether or not the power-holding timer TPH has reached 8 seconds. If 8 seconds have elapsed, the output port P04 is set to H in step # 112, and DC-D is set.
The output of the secondary power supply of the C converter is shut off. After that, the process returns to step # 101 again to form a loop.

When the photographer half-presses the release button on the timer release device 300 side, SW301 is turned on and the L level is output to the terminal TWUP, and the terminal WUP becomes L on the camera side, and the signal is the input port of the microcomputer 101. P11
to go into. As described in the flow of FIG. 11, the microcomputer 101 of the camera 100 activates the secondary power supply of the DC-DC converter and resets the power supply holding timer.
Next, when the photographer fully presses the release button of the timer release device 300, the switch 302 is turned on and the input IN of the timer circuit 301 becomes L. Then, the timer circuit 301 immediately sets the output OUT to L and starts measuring the time set by the time setting means (not shown), and holds the output OUT at L until the time ends. In other words, this timer release device is an accessory mainly for automatically performing bulb shooting of a camera for a set time only by starting operation. The power of the timer circuit 301 is supplied from the one in which the terminals TBAT and TVCC are connected, but until the power start switch SW301 is turned on, the camera 1
00 secondary power supply is not active, so power is supplied from the terminal BAT side, after turning on SW301
Since the secondary power supply becomes active, power is supplied from the higher voltage of either pin VCC or pin BAT. In the timer release device 300, the power supply terminals TBAT and TVCC can be directly connected to the power supply output terminal BAT on the camera 100 side.
Diode D1 between each VCC and its power supply
This is because 01 and D102 are put in series. While the output OUT of the timer circuit 301 is L, since L is input from the terminal RLS of the connector 111 of the camera 100 via the terminal TRLS, a release request is made as shown in the flow of FIG.

Next, the operation of the connection example of FIG. 4 will be described. Reference numeral 400 in FIG. 4 is a mode selection device, and terminals connected to the camera correspond to EGND and RX with respect to the camera side SGND.
ETX, ERX corresponding to TX. Terminal ETX is microcomputer 4
The terminal ERX is connected to the serial output port TXD of 01, and the terminal ERX is connected to the serial input port RXD. Microcomputer 401
3 switches SW401, SW402, SW403
Are connected to input ports P41, P42, P43, respectively. SW
402 and SW403 are mode selection switches, and SW
401 is a transfer start switch. When the SW 401 is turned on, the 2-bit 0/1 state of the SW 402 and the SW 403 is sent as it is to the microcomputer 101 of the camera through serial data transfer from the terminal ETX through the terminal RX. Upon receiving the 1-byte data, the camera microcomputer 101 returns predetermined confirmation signal data from the terminal TX to the mode selection device microcomputer 401 via the terminal ERX. FIG. 5 shows the camera 1.
12 is a bit map showing memory bits of selected mode information in the microcomputer 00 of 00. The state of SW402 is stored in the flag name'MOD0 'in bit 0, and the state of SW403 is stored in the flag name'MOD1' in bit 1 in the RAM of address name'MODE '. The relationship between the 2-bit state and the selection mode is defined as "00" for asynchronous interlocking mode, "01" for simultaneous interlocking mode, "10" for alternate interlocking mode, and "11" for non-interlocking mode.

Next, the operation in the case of the connection between the cameras, which is the connection example of FIG. 2, will be described. The camera 200 is the camera 10.
It is a camera of the same type as 0, and its internal configuration is also the same. Reference numeral 500 denotes a cable for connecting the respective connectors 111 and 211 of the camera 100 and the camera 200, and the respective terminals of the connector 111 and the corresponding terminals of the connector 211 are directly connected. However, connector 1
The RX terminal of 11 is connected to the TX terminal of the connector 211, and the TX terminal of the connector 111 is connected to the RX terminal of the connector 211.

In order to explain the interlocking operation between the cameras in the connection example of FIG. 2, the flowcharts of FIGS. 12 and 13 will be described first. This flow is based on the microcomputer 1 of the camera 100.
01 and the microcomputer 201 of the camera 200 are common. FIG. 12 is a flow of a timer interrupt routine in which the microcomputer 101 or 201 is normally operated at a short predetermined time (for example, 1 ms) during operation. In step # 201, MODE = 3 (binary number 11 )
If it is no, the level of the input port P15 is determined in step # 202. If it is L, that is, when the power start switch is turned on by operating the release button of the camera, the output port P01 is set to H. To do. Then,
The transistor Q101 turns on and L is output from the terminal WUP. However, when MODE ≠ 3 in step # 201 and when P15 is H in step # 202, since the output port P01 is kept at L, the transistor Q101 remains off and the terminal WUP also remains open. . This operation is synchronized with the operation of the power start switch of the camera body except when the non-interlocking mode is set, and the terminal WU
It means that the power supply start signal is output from P to the outside.
Subsequently, in step # 205, it is determined whether or not MODE = 0, and if no, the process immediately returns. Step # 20
If 5 is MODE = 0, the level of the input port is determined in step # 206. If this is L, that is, the release switch is turned on by operating the release button of the camera, the output port P02 is set to H in step # 209. As a result, the transistor Q102 is turned on and the terminal RLS externally
Is output. If the release switch is off in step # 206, the output port P02 is set to L in step # 208.
As it is, the terminal RLS also remains open. This operation means that the release signal is output from the terminal RLS to the outside in synchronization with the operation of the release switch of the camera body only when the asynchronous interlock is set. A timing diagram showing the operation is FIG. 8 showing the release operation in the asynchronous interlocking mode, and SW10 is at point a in FIG.
2, that is, in conjunction with turning on the release switch of the main unit
The output of the RLS terminal changes from open to L, which allows continuous shooting of two frames from point b to point n. When the release switch turns off at point p in the middle of the second frame, the RLS terminal output also returns to open. On the other hand, FIG. 7 shows a release operation in a case other than the asynchronous interlocking mode, for example, in the non-interlocking mode, and similarly to FIG. 8, the SW102, that is, the release switch is turned on at point a of FIG. , RLS pin output remains open.

FIG. 13 is a flow chart showing the contents of the release subroutine in FIG. First, step # 30
Flag $ to see if 1 is in master state
If MST is discriminated and it is 0, that is, in the slave state, the output port P03 is set to H in step # 302. This turns on the transistor Q103 and outputs L to the outside from the terminal BUSY. This corresponds to the part where the BUSY terminal output changes from open to L when the release operation starts at point b in the timing chart of FIG. 6 showing the release operation in the slave state. It becomes a signal to inform that it is inside. If $ MST = 1 in step # 301, that is, in the master state, it is determined in step # 303 whether MODE = 1, that is, whether the simultaneous linking mode is set, and if yes, in step # 304 the flag $ 304 is set. MR
Set S. The flag $ MRS is a flag for temporarily storing that the release in the master state has started in the simultaneous interlocking mode. At the same time, in step # 305, the output port P02 is set to H and L is output from the terminal RLS to the outside.
Referring to the timing chart of FIG. 9 showing the release operation in the simultaneous interlocking mode, SW102 at the point a, that is, the release switch of the main body is turned on, but the timing when the release operation is actually started for the focusing operation or the like. Is point b, and at this time, L is output from the terminal RLS. Camera 2
00 receives the L input from the terminal RLS and starts the actual release operation at the point r, and since it is the release operation in the slave state, it simultaneously outputs L from the terminal BUSY on the camera 200 side. The input level of the terminal BUSY becomes L. In either case, next, at step # 306, the output ports P05 and P06 are operated to energize both the magnets L101 and L102 for locking the front and rear curtains. At the same time, in step # 307, the output ports P07 and P08 are operated so as to rotate the motor 106 in the normal direction, and the mechanical means for mirror up (not shown) is started. Then, in step # 308, the timer TMD is reset to 0. The timer TMD is a timer for measuring the time from the start of the release operation. Next, in step # 309, the flag $ MRS is discriminated. If this is 1, that is, in the case of the release operation in the simultaneous interlocking mode, wait for the timer TMD to reach 50 ms in step # 310, and when it reaches, output in step # 311. Port P02 to L
(P point in FIG. 9). This is because the output from the terminal RLS is 50 after the release operation starts only in the simultaneous linking mode.
This means that L is set for ms (tRS in FIG. 9). After that, or when the flag $ MRS is 0 in step # 309, wait for the timer TMD to reach 70 ms in step # 312, and when it reaches the motor 1 in step # 313.
06 is stopped (point c in FIGS. 6 to 10). Next, in step # 314, the energization of the magnet L101 is released in order to drive the front curtain of the shutter (point d in FIGS. 6 to 10).
From that point, in step # 315, after waiting for the shutter time set by means not shown, step # 315
At 316, the magnet L102 is de-energized in order to drive the rear curtain of the shutter (point e in FIGS. 6 to 10). This completes the shutter control, and in step # 317, the timer TMD is set to 0 in order to measure the time from that point.
Reset to. Then, in step # 318, the motor 10
6 is reversed (point f in FIGS. 6 to 10) to start mirror down and shutter charge operation. Then step #
The flag $ MST is discriminated at 319, and if it is 0, that is, if the release is in the slave state, step # 32.
If it is 1, that is, in the case of release in the master state, the process proceeds to step # 320. Step # 320
Then, it is determined whether MODE = 2. If no, that is, if the interlocking mode is not set, the process jumps to step # 325, and if yes, that is, the interlocking mode is set, the timer TMD is set to 90 ms at step # 321. Waits until it reaches the output port P0 at step # 322.
2 is set to H and L level is output from the terminal RLS (Fig. 1
0 p point). Then, in step # 323, wait until the timer TMD reaches 140 ms, and when it reaches, step # 3
At 24, the output port P02 is returned to L, and the output of the terminal RLS is returned to open (point v in FIG. 10). Step # 320-
The operation of step # 324 is performed 50 ms (tDRA in FIG. 10) 90 ms after shutter control (tDRA in FIG. 10) only in the release operation in the alternate interlocking mode and the master state.
It means that L is output from the terminal RLS during RA).
In FIG. 10, as a result, the input level of the terminal RLS of the camera 200 becomes L, so that the camera 200 has started the release operation in the slave state (point r in FIG. 10).
The release operation start point of the camera 200 is almost at the midpoint between point b, which is the release start point of 00, and point h, which is the start point of the second frame. Since the camera 200 is the release operation in the slave state, L is output from the terminal BUSY, so that the input of the terminal BUSY of the camera 100 becomes L level from the point r.

In either case, next, at step # 325, the timer TMD is waited until it reaches 230 ms, and then the motor 106 is stopped at step # 326 (see FIGS.
(G point 0), mirror down, shutter charge operation are terminated. In step # 327, the output port P03 is set to L, and even if L is output from the terminal BUSY, it is returned to open (s of the camera 200 of FIGS.
Point), and notify the other camera in the master state of the end of the release sequence. Further, in step # 328, the uniform flag $ MRS is cleared, and at that time, the memory of the release operation in the simultaneous interlocking mode and the master state is temporarily released, and the process returns.

Here again, the points are organized according to the timing charts of FIGS. 6 to 10. FIG. 6 shows a camera 100.
Is a timing chart when the release operation is performed in the slave state, the input of the terminal RLS becomes L (point a)
As a result, mirror up is performed from point b to point c, shutter control is performed from point d to point e, mirror down and shutter charge is performed from point f to point g. At that point, the level of the terminal RLS remains L, so h
From the point n to the point n, the release operation of the next frame is continuously performed. Then, from the point b to the point g and from the point h to the point n, the level L of the terminal BUSY indicating the release sequence in the slave state is output.

FIG. 7 is a timing chart when the master 100 is released when the camera 100 is set in the non-interlocking mode. By operating the release button of the camera 100, that is, the SW 102, that is, the release switch is turned on (point a), a two-frame release operation is performed from point b to point g and from point h to point n, as in FIG. However, the output of the terminal BUSY remains open because it is in the master state.

FIG. 8 is a timing chart when the master 100 is released when the camera 100 is set in the asynchronous interlocking mode. From the point a to the point p, while the SW102, that is, the release switch is turned on by operating the release button of the camera 100, the terminal RL
L level is output from S. When the release switch is turned on, the release operation of two frames is still performed, but the output of the terminal RLS outputs the state of the release switch as it is regardless of the sequence.

FIG. 9 is a timing chart showing a case where the master 100 is released when the camera 100 is set to the simultaneous interlocking mode and the connected camera 200 releases the slave state. Camera 10
0 starts the release operation from the point b when the release switch is turned on from the point a, and the terminal RLS
Outputs L from to tRS. This allows the camera 20
0 starts the release operation in the slave state from the r point and outputs L from the terminal BUSY. In the case of FIG. 9, the shutter time of the camera 200 is set to be longer,
Although the release sequence of the camera 100 is completed at the point g, the release sequence of the camera 200 is completed until the subsequent point s. The camera 100 has its release switch turned on immediately after the point g, but the terminal BU
Since the input level of SY is L, it waits until the level of the terminal BUSY becomes H in anticipation of entering the release operation. Finally, the release sequence of the camera 200 ends at point s, and the input level of the terminal BUSY of the camera 100 becomes H.
After returning to step 2, the second frame release operation starts from point h.

FIG. 10 is a timing chart showing a case where the master state is released when the camera 100 is set to the alternate interlocking mode and the connected camera 200 releases the slave state. Camera 10
0 indicates that when the release switch is turned on from the point a, the release operation actually starts from the point b, and after the shutter control ends (point e), from tDRA to tRA during the terminal RL.
Output L from S. This time tDRA is a time estimated such that the timing of falling the output of the terminal RLS is about half of the time required for the normal one frame release sequence. The camera 200 uses the terminal RLS input L
The release operation in the slave state is started from the point. When the camera 100 completes the release sequence for that frame at point g, it immediately starts the release operation for the second frame and outputs the release signal from the terminal RLS again at the same timing as the first frame. After the release sequence of the camera 200 ends, the camera 200 performs the release operation in the slave state again. In this way, the camera 100 and the camera 200 alternately repeat the continuous release at the timing of being shifted by one half cycle.

In the operation of the connection example of FIG. 4, among the terminals connected to each other by the cable 500, BAT, VCC, R
The four terminals of X and TX did not appear in the explanation of operation. This is because all the terminals are connected to the cable 500 so that the cable 500 can be used for accessories other than this embodiment and the camera body. At that time, the terminals BAT or VCC should be connected. There is no problem even if you connect it as it is, both the camera 100 and the camera 200
This is because diodes are inserted in series at both BAT and VCC terminals.

[0025]

As described above, according to the present invention, a mode in which two cameras are connected by a cable and a plurality of interlocking modes for interlocking the release operation are provided and any one of them can be selected. Since the setting means is provided, different interlocking functions can be easily set in the same camera, the starting power of interlocking shooting is improved, and the range of photographic expression is expanded.

In addition, it is possible to select a mode in which the two cameras are not interlocked with the cable connected, and in that case, the power activation signal is also interlocked, so that it is possible to expect an effect of preventing unnecessary power consumption. .

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a configuration of the present invention.

FIG. 2 is a block diagram showing a circuit configuration and a connection relationship of an embodiment of the present invention.

FIG. 3 is a block diagram showing a circuit configuration and a connection relationship of an embodiment of the present invention.

FIG. 4 is a block diagram showing a circuit configuration and a connection relationship of an embodiment of the present invention.

FIG. 5 is a bit map showing flags in the microcomputer according to the embodiment of the present invention.

FIG. 6 is a timing chart showing the timing of signals in the embodiment of the present invention.

FIG. 7 is a timing chart showing the timing of signals in the embodiment of the present invention.

FIG. 8 is a timing chart showing the timing of signals in the embodiment of the present invention.

FIG. 9 is a timing chart showing the timing of signals in the embodiment of the present invention.

FIG. 10 is a timing chart showing the timing of signals in the embodiment of the present invention.

FIG. 11 is a flowchart of the microcomputer according to the embodiment of the present invention.

FIG. 12 is a flowchart of a microcomputer according to an embodiment of the present invention.

FIG. 13 is a flowchart of the microcomputer according to the embodiment of the present invention.

[Explanation of symbols]

 100 camera 101 microcomputer 111 connector 200 camera 201 microcomputer 211 connector 300 timer release device 301 timer circuit 400 mode selection device 401 microcomputer 500 cable

Claims (5)

[Claims] 1. In a camera for electrically connecting two cameras and interlocking them, a setting means for selectively setting any one of a plurality of interlocking modes related to the interlocking; A signal input / output control device for a camera, comprising: execution means for executing a predetermined interlocking operation according to the mode set by the setting means. 2. An interlocking mode setting means for setting one of a plurality of interlocking modes; a release signal terminal for inputting / outputting a release signal; a means for inputting a release request signal from the outside through the release signal terminal. Means for outputting a release request signal to the outside to the release signal terminal;
A timing signal terminal for inputting and outputting a timing signal; a means for inputting an external timing signal from the timing signal terminal; a means for outputting an external timing signal to the timing signal terminal; A signal and a signal from the timing signal input means, and a signal control means for outputting a signal to the release signal output means and the timing signal output means; a release operation means for requesting activation of a release; a camera And a release sequence control means for outputting a signal relating to the timing of the release operation, wherein the signal control means receives the release request signal from the release signal input means from the release sequence control means. Signal during the release operation When a timing signal is output to the timing signal output means and the release operation means is operated, a setting interlocking mode in the mode setting means, a signal input state of the timing signal input means, and a release sequence control means A signal input / output control device for a camera, characterized in that the timing of a release request signal to be output from the release signal output means to the outside is determined according to the signal. 3. The plurality of interlocking modes include a non-interlocking mode, and the signal control means does not output a release request signal to the outside from the release signal output means in the non-interlocking mode. The signal input / output control device of the camera described. 4. An interlock mode setting means for setting one of a plurality of interlock modes; a power start signal terminal for inputting and outputting a power start signal; and a power start request signal from the outside from the power start signal terminal. Means for inputting; means for outputting an external power source activation request signal to the power source activation signal terminal; power source activation operation means for requesting power source activation; power source control means for controlling the power source of the camera; A signal control means for inputting a signal from the starting operation means and a signal from the power supply start signal input means and outputting a signal to the power supply control means and the power supply start signal output means; and the power supply start signal control means, When the power supply start-up operation means is operated or when a power supply start-up request signal is received from the power supply start-up signal input means, the power supply start-up operation means is started, The signal input / output control of the camera, characterized in that the timing of the power supply start request signal output from the power supply start signal output means to the outside is determined according to the setting interlocking mode in the mode setting means when it is created. apparatus. 5. The plurality of interlock modes include a non-interlock mode, and the signal control means does not output a power start request signal to the outside from the power start signal output means in the non-interlock mode. 3. A signal input / output control device for a camera according to item 3.