JPS63155040A - Camera with new/old flash device operating function - Google Patents

Abstract

PURPOSE:To obtain a camera compatible with flash devices by discriminating whether the set flash device is new type or old type according as the voltage of the control terminal of the camera is changed or not. CONSTITUTION:When the old type flash device is set to a camera 11, the voltage of a control terminal C of the camera 11 is not changed because this flash device has not a terminal corresponding to the control terminal C, and it is judged on the side of the camera 11 that the old type flash device is set, and a camera mechanism part interlocking with the old type flash device is switched to the operation mode. When a new type flash device 10 is set, control terminals X, Q, R, and C of the camera 11 are electrically connected to terminals X0, Q0, R0, and C0 of the flash device to change the control terminal voltage. As the result, it is judged on the side of the camera 11 that the new type flash device is set, and a camera mechanism part interlocking with the new type flash device is switched to the operation mode. Thus, the compatibility with flash devices is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a camera for photography that can be used with an old flash device and a new flash device that is an improved flash device.

``Prior Art'' Recent photography cameras have a configuration in which many information signals are exchanged with the flash device, such as giving camera information to the flash device and inputting flash information from the flash device. There are many things.

In such a camera, the camera specifies the flash device that can be attached to the camera because both the camera information and the flash information have a signal format, number of signal sequences, etc. that match the mechanism and function of the camera and flash device. .

In other words, the flash devices that can be installed and used with certain manufacturers' cameras and camera models are limited, and are so-called dedicated flash devices.

When the flash device is charged to the point where it can fire, this type of camera inputs a signal indicating that it is ready to fire, switches to flash photography mode, and outputs a quench signal when the appropriate exposure is reached. Various operations in flash photography, such as applying a signal to the flash device to stop the flash, are automated.

"Problems to be Solved by the Invention" A major problem with the above-mentioned conventional cameras is that they are not compatible with flash devices because the flash devices that can be attached and used are specified.

For this reason, when a new camera is developed, it is necessary to develop a dedicated flash device that can be attached to the new camera. In other words, a new dedicated flash device must be developed every time a camera is developed.

It is true that the dedicated flash device developed with the camera is a multi-functional and extremely convenient flash device with automatic control, but on the other hand, when you purchase a new camera, you have to purchase a new flash device specifically designed for this camera. This creates an unreasonable situation in that flash photography cannot be performed unless the flash device is used, and the cost of the product becomes high because a new flash device must be developed.

"Means for Solving the Problems" In view of the above-mentioned circumstances, it is an object of the present invention to develop a photographic camera that can be used with both an old flash device and a new flash device.

Therefore, as a first aspect of the present invention, in addition to each terminal that electrically connects the old flash device, a control terminal that electrically connects the new flash device together with these terminals is provided, and a control terminal that electrically connects the new flash device is provided. The old and new flash device is characterized by being provided with a discriminating means for determining whether the device is an old type flash device if the terminal voltage of the control terminal does not change, and a new type flash device if the terminal voltage changes. We propose a camera with a response function.

Further, the second invention includes a camera mechanism section that is linked to the old flash device and a camera mechanism section that is linked to the new flash device, and is compatible with the flash device that has been discriminated in response to the discriminating operation of the discriminating means. The present invention proposes a camera having a responsive function for old and new flash devices, characterized in that one of these camera mechanisms is configured to be selectively switched to an operating mode.

"Operation" When an old flash device is attached to the camera according to the present invention, since this flash device does not have a terminal corresponding to the control terminal, the control terminal voltage is kept unchanged, and the camera side It is determined that the device is attached, and the camera mechanism linked to the old flash device is shifted to the operating mode.

When the new flash device is installed, the control terminal is electrically coupled to the flash device and the control terminal voltage changes. As a result, the camera side determines that the new type of flash device is attached and shifts the camera mechanism unit linked to the new type of flash device to an operation mode.

"Example" Next, embodiments of the present invention will be described with reference to the drawings.

Figure 1 shows a new type of flash device I with a clear knob-on type.
A partial perspective view of a new camera 11 implementing the present invention is shown.

Attachment feet 13 provided on the outer bottom of the case body 12 of the flash device IO are provided with flash device side terminals Xo, Ro, and Q to which projecting force is applied by a spring.

, and a newly provided terminal C with similar protruding force.

This is preparation.

The hot shoe 14 of the camera 11 has the terminals Xo and RO.
% Q In addition to the camera side terminals X, R, and Q that correspond to o,
A camera side terminal C corresponding to the above terminal CO is provided,
By inserting the mounting foot 13 into the hot shoe 14, each terminal on the flash device side comes into contact with each terminal on the camera side.

In addition to the above-mentioned terminals, the mounting foot 13 has a ground terminal G.
o (not shown), and this ground terminal GO is in contact with the ground terminal G on the camera side.

These ground terminals Go and G have a known structure, and for example, a part of the hot shoe contacts a part of the ground contact piece protruding from a part of the mounting leg 13.

Note that the terminals Xo, . . . Terminal R% R.

is a connection terminal that transmits the serial clock signal from the camera to the flash device, but when the flash device is attached to an older camera, a signal indicating that the flash is ready to emit light (hereinafter simply referred to as the "ready signal") is sent to the flash. Acts as a connection terminal for transmitting information from the device to the old camera. Terminals Qo and Q are connection terminals for transmitting and receiving various serial signals such as a ready signal, an aperture information signal, and a quench signal between the camera and the flash device. In addition, terminals Co and C are connection terminals for determining whether the flash device and camera are connected to the new or old model, and for transmitting control signals from the camera to the flash device when a new flash device is attached. be.

FIG. 2 shows the input/output circuit section of the flash device 10 connected to each of the above-mentioned terminals Ro, Qo, and co, and the input/output circuit section of the camera 11 connected to each of the above-mentioned terminals R, Q, and C. In this figure, the dashed-two dotted line on the right side shows a partial circuit of the flash device 10, and the dashed-double line on the left (Ill) shows a partial circuit of the camera 11.

As shown in the figure, the flash device 10 is provided with common emitter transistors 16, 17, and 18 whose output parts are connected to the microcomputer 15. A terminal Qo is connected to the base of the transistor 16 via a resistor 19, and a terminal Ro is connected to the base of the transistor 16 through a resistor 19. A terminal C is connected to the base of the transistor 17 via a resistor 20.
o are each connected to the base of the transistor 18 via a resistor 21. And these transistors I6 and I7
．． Among the 18 bias resistors 22, 23, and 24, the bias resistor 24 of the transistor 18 is a resistor with a small resistance value (for example, about 2 OKΩ), and this resistor 24 forms a combined resistance with the above-mentioned resistor 21, and the flash It functions as a discrimination resistor for determining on the flash device side whether the device 10 is attached to an old camera or a new camera.

This will be discussed later. Further, the output of the transistor 18 is inverted by an inverter 25 and used as an input signal to the microcomputer 15. That is, by turning on the current transistor 18, II i g
When the h voltage signal is turned off, the low voltage signal is manually generated.

The above-mentioned common emitter transistor 16.17.18
Each forms a signal input path for receiving camera information into flash device 10 .

In addition, two transistors 26 and 27 are provided whose bases are input from the microcomputer 15, and the transistor 2
The emitter of the transistor I6 is connected to the base of the transistor I6, and the emitter of the transistor 27 is connected to the base of the transistor I7.

These transistors 26 and 27 act as emitter followers and form a signal output path for outputting flash information from terminals Ro and Qo toward the camera.

A series circuit of a capacitor 28 and a resistor 29 is a time constant circuit that is supplied with power by a battery power source 31 when a power switch 30 is turned on, and a common emitter transistor 32 whose base is connected to this time constant circuit is turned on for a short time. It is something.

These time constant circuits and the transistor 32 turn on the power transistor 33 when the transistor 32 is turned on, and the flash device circuit is activated during the i1J period! It works to stabilize S.

Note that the collector of the transistor 32 is connected to the collector of the transistor I8 through the diode 34, and the microcomputer 1 is connected to this transistor;
A transistor 35 whose base is input from 5 is connected to the 11u column.

A control signal is input to terminal CO and transistor 1
8 turns on, the power transistor 33 described above turns on.
N and then moves to power hole state. That is, when the transistor I8 is turned on, the H4gh voltage signal is input from the inverter 25 to the microcomputer 15, and as a result, the microcomputer 15 controls the transistor 35 to be turned on for a predetermined time, and the power transistor 33 turns on the transistor 18. Regardless of whether it is turned ON or OFF afterwards, power is continued to be supplied to the flash device circuit for a predetermined time period of 5 to 10 minutes, for example.

On the other hand, the flash device 10 includes a non-improved flash mechanism and an improved flash mechanism configured using part or all of this flash mechanism, and the operating modes of these two flash mechanisms are controlled by the microcomputer 15.
can be selectively switched by.

The non-improved flash mechanism included in the flash device 10 has terminals X01RO1Qo and G that do not have a terminal CO.
It is assumed that the configuration is similar to that of the old flash device with a four-terminal configuration. That is, the flash mechanism is such that, prior to starting the flash, a ready signal is output from the terminal RO, and an aperture information signal is output from the terminal Qo, and after the flash is started, a quench signal is input as a camera signal from the terminal QO.

A flash device equipped with such a flash mechanism has already been commercialized and is publicly known, and is also disclosed in Japanese Patent Application Laid-Open No. 57-2
It is published in Publication No. 04029 and the like.

In addition, the improved flash mechanism is equipped with a terminal CO as a control terminal, and according to the control signal input to this terminal CO, a ready signal, an aperture information signal, a quench signal, and other signals necessary for the new camera and the improved flash mechanism ( This signal (hereinafter referred to as a "serial signal") is sent and received through the terminal QO, and a serial clock signal is input through the terminal RO.

The camera 11 includes a microcomputer 3 as shown in the figure.
A common emitter transistor 37 whose output part is connected to 6
．． A terminal Q is connected to the base of the transistor 37 via a base resistor 39, and a terminal R is connected to the base of the transistor 38 via a base resistor 40. These transistors 37, 38 form a signal path for receiving flash information into the camera. Note that 41.42 is the bias resistance of the transistors 37.38.

In addition, transistors 43 and 44 are provided for base input from the microcomputer 36, and transistors 43 and 44 are provided.
The emitter of the transistor 44 is connected to the terminal Q, and the emitter of the transistor 44 is connected to the terminal R.

These transistors 43 and 44 act as emitter followers and form a signal output path for outputting camera information from terminals R and Q toward the flash device.

The base of the transistor 43 is input through the OR gate 45, and this is because the serial signal output from the microcomputer 36 and the quench signal Qs are output using the terminal Q as a common terminal.

Further, a drive circuit 46 is provided which outputs a control signal in accordance with a command signal from the microcomputer 360, and a terminal C is connected to the output end of this drive circuit 46. The drive circuit 46 is a tri-state (3-state circuit), and the resistor 47 connected to its output terminal is a discrimination resistor that allows the camera to determine whether it is an old flash device or a new flash device. , is a resistor with a relatively high resistance value (for example, about 200Ω). When the new type of flash device 10 as shown in the figure is installed, the terminal C%
When Co is connected, the output voltage of the drive circuit 46 appearing at terminal C drops to the divided voltage determined by the resistance values of the discrimination resistor 47 on the camera side, the resistance 21 on the flash device side, and the discrimination resistor 24, and the terminal C becomes The voltage becomes Low. Note that the combined resistance value of the resistor 21 and the discrimination resistor 24 is set to be smaller than the resistance value of the discrimination resistor 47.

The LOW voltage at terminal C is detected by comparator 48. This comparator 48 is composed of an operational amplifier that inputs the non-inverting input terminal to the reference voltage and inputs the above-mentioned Low voltage to the inverting input terminal to perform an inverting operation.By inputting the H4gh voltage output to the microcomputer 36,
The camera 11 is operated to correspond to the new type of flash device IO.

With this operation, the drive circuit 46 is controlled, its output voltage rises, and the voltage at the terminal C changes from the above-mentioned LOW voltage to Hi.
gh voltage.

In addition, if an older flash device that does not have terminal Co is installed, terminal C will maintain the )(i g kl voltage,
The low voltage output of the comparator 48 is input to the microcomputer 36, and the camera 11 operates in accordance with the old flash device.

As mentioned above, in response to the determination by the determining means consisting of the drive circuit 46, the determining resistor 47, the comparator 48, etc., the camera mechanism section that operates in conjunction with the old flash device is set to the operating mode. to move to.

Other terminals X, Xo and terminals G, Go? ff)1
The circuit configuration used is the same as that of conventional cameras and flash devices, so a description thereof will be omitted.

Next, the flash device 10 and camera 11 mentioned above will be explained.

(11) When a new type of flash device is attached to a new type of camera The operation when the above-mentioned new type of flash device IO is attached to a new type of camera 11 will be explained with reference to the time chart shown in Fig. 4. During installation, each terminal X01RO1QO% CO, GO on the flash device side is connected to each terminal X, R, Q, C1G on the camera side.

Further, when the power switch 30 of the flash device 10 is turned on, the power transistor 33 is turned ON for a short time and the flash device circuit is set to the initial operating state, as described above.

In the above state, turn on the power switch of camera 11 (not shown)
When it is immersed, the drive circuit 46 outputs a control signal.

This control signal is a voltage signal of a predetermined level that sends out pulse signals P, , P2, and P3 as shown in FIGS. 3 and 4(a).

Therefore, at the time when the control signal is generated, the output voltage of the drive circuit 46 is divided by the discrimination resistor 24.47 and the resistor 21, and the terminal voltages C and Co are
As shown with a phantom line in the figure, a low voltage appears.

This LOW voltage is applied to the inverting input terminal of the comparator 48, and due to the inverting operation of the comparator 48, the LOW voltage becomes HIGH.
h voltage output is manually input to the microcomputer 36.

Through the above operation, the camera side determines that the new type of flash device 10 is attached, and the camera 11 uses the flash device IO.
It operates accordingly.

When the camera 11 judges as above, the drive circuit 4
6 and raise its output voltage by 10, the terminal C0
1C becomes High k+ voltage.

On the other hand, on the flash device side, terminal Co is l, o w
By changing from voltage to Ihigh voltage, transistor 1
8 is ONL, and then the power transistor 33 is turned on, and the high voltage output of the inverter 25 is input to the microcomputer 15.

Thereby, according to the program of the microcomputer 15, the transistor 35 operates to remain ON and the power transistor 33 maintains the ON state for a predetermined period of time.

That is, as shown in FIG. 4(b), the flash device circuit power is halted.

Further, the microcomputer 15 keeps the output of the inverter 25 high for a certain period of time (for example, 10 milliseconds).
When the voltage is present, it is determined that the flash device 10 is attached to the new camera 11.

In other words, the timer function of the microcomputer 15 causes the terminal C to be activated for one hour.

is at High voltage, the flash device l
It is determined that O is attached to the new camera 11 and the improved flash mechanism is used.

FIG. 5 is a flowchart of the microcomputer 15 showing power hold and discrimination operations.

As shown in the figure, the microcomputer 15 operates to power on the flash device 10 almost at the same time as the control signal is input to the terminal Co, then starts power hold, and then runs a program to start the timer. proceed.

Then, it is determined whether the voltage of terminal Co is High or not,
If L, ow, the timer t is decremented by 1, and then the process returns to the determination process again.

The determination operation is repeated in this manner until the timer 1 time t expires, and if the High voltage is recognized fII, the operation mode of the improved flash mechanism is entered. Note that if the High voltage cannot be recognized at 61, the mode shifts to the non-improved flash operation mode.

Further, power supply to the flash device 10 is continued until a predetermined power hold time T ends, and when this hold time T ends, the power of the flash device 10 is automatically turned off.

When the above-described determination operation is completed, pulse signals P1 and P2 shown in FIGS. 3 and 4(a) are repeatedly sent to the terminal Co from the drive circuit 46.

When the pulse signal P1 is input from the terminal CO, the transistor 18 is temporarily set to 0FFL, and the "LOW" output of the inverter 25 is input to the microcomputer 15. Than this,
The microcomputer 15 receives and receives camera information from the camera 11, and a serial clock signal is input to the terminal Ro, and a serial signal is input to the terminal QO. transmitted to. (Figure 4 (C),
(See (d)) When the pulse signal P2 is input from the terminal CO, the transistor 18 repeats ON and OFF, and the L of the inverter 25
ow", "84gh", "l, ow" outputs are input to the microcomputer 15. From now on, this microcomputer 15 switches to transmit flash information to the camera 11, contrary to the above, and the terminal RO In the same way as above, input the serial clock signal from
Terminal Q as emitter follower output of transistor 26
Serial signals such as a ready signal and an aperture information signal are output from o, and these flash information are transmitted to the microcomputer 36 via transistors 1 to 37 on the camera side. (See FIGS. 4(c) and (el)) The microcomputer 3G of the camera 11 inputs the H4gh voltage output of the comparator 48 and determines that the new flash device 10 is attached, and then outputs the above-mentioned pulse. The signals P1 and P2 are outputted from the drive circuit 46, and immediately after the output of the pulse signal P1, the serial clock signal is outputted to the terminal R via the transistor 44, and the serial signal is outputted to the terminal Q via the transistor 43.
Immediately after the output of the pulse signal P2, a serial clock signal is output to the terminal R via the transistor 44, and a serial signal is input to the terminal Q via the transistor 37, so programmed. (Refer to Figure 7) The flash information and camera information as described above are exchanged repeatedly, and when the camera 11 is shifted to the release mode during this repetition, the terminal Co is connected to the terminal Co as shown in Figures 3 and 4. A pulse signal P3 shown in is sent from the drive circuit 46. Therefore, the microcomputer 15 has an inverter 2 corresponding to the pulse signal P3.
5 is input, and this computer 15 shifts the flash stop control circuit to a standby state.

Note that switching the release mode of the camera 11 is performed by interrupting the program of the microcomputer 3-6. (See Figure 7) When the camera 11 is released, a trigger signal is input to the terminal Xo to start the flash, and a quench signal sent from the camera 11 at the time of proper exposure is input to the terminal Qo to stop the flash. Control takes place. (See FIGS. 4(d), (f), and (g)) FIG. 6 shows the microcomputer 15 when the control signals P1, P2, and P3 are input to the flash device 10.
3 is a flowchart showing the operation of FIG.

As shown in the figure, when the terminal CO becomes H4gh voltage, the input gate of the counter opens, the counter counts pulse signals P1, P2, and P3, and these pulse signals are once counted and sent.

Then, the pulse signals whose counts are set are Pi, P2,
It is determined whether it is P3 or not, and if it is confirmed that it is Pl, the information transmission is switched and the camera information is accepted or not, and when it is confirmed that it is P2. , the switching of information transmission results in an operation of outputting flash information. Further, when it is confirmed that the signal is P3, the quench signal circuit sends a pulse "1" from itself and begins to accept and accept the quench signal. If none of the pulse signals P1, P2, and P3 are confirmed, it returns to the initial position and repeats the above judgment process.

Next, FIG. 7 is a flow chart showing the operation of the microcomputer 36 included in the camera 11.

As shown in the figure, when the program starts, the microcomputer 36 allows INT (interrupt) immediately after the initial cent, and in the next step it is determined whether the photometry mode is set.

If the photometry mode is set, the new/old flash device attached to the camera 11 is monitored in step 5T100. This monitoring is performed by monitoring whether the output voltage of the comparator 48 shown in FIG. 2 is low or high.

Next, after executing other routines for aperture, photometry, and exposure calculations, the program is divided into programs corresponding to the new flash device and the old flash device.

If a new type of flash device is monitored in step 5T100 described above, step 5TI01-3T1
02 program processing is performed and the old flash device is monitored, step 5T103.5T104
This is the program processing.

In steps 5TIO1 to 5T102, the pulse signal P2
After the flash information is generated, processing is performed to receive the flash information into the camera 11. That is, after outputting the pulse signal P2 to the terminal C as a control signal from the drive circuit 46 shown in FIG. Program processing is executed as if the signals were generated manually.

When a ready signal is input from terminal Q, it is determined that flashing is possible, and the process proceeds to the next step.

In the following step, a process of transmitting camera information to the flash device 10 is performed after generating the pulse signal P1. That is, after outputting the pulse signal P1 to the terminal C as a control signal from the drive circuit 46 shown in FIG. Program processing is executed to output .

Further, interrupts are prohibited at the beginning of step 5TIOI-3T102 and enabled at the end thereof.

When the old flash device is monitored, the ready signal input to the R terminal is monitored, and after the shirt release, a quench signal is sent to the terminal Q when proper exposure is achieved using a well-known light intensity integration circuit (not shown). Processed to output more.

In the next program, other routines are instructed to display the finder and generate the warning sound, but these finder displays and the generation of the warning sound are repeated until the set time of the timer ends.

Note that each symbol (■) shown in the figure indicates a connector, and all of these connectors are connected.

Further, steps 5T105, . . . , 5TIIO indicate the portions that determine the occurrence of an interrupt, and even if an interrupt is confirmed at any step, the program immediately returns to the initial position.

Interrupts are performed by the interrupt loop shown in FIG. 8 when entering release mode.

When an interrupt occurs, the execution of the main program described above is temporarily stopped, the program shown in FIG. 8 is executed, and the pulse signal P3 is outputted from the drive circuit 46 shown in FIG. 2 to the terminal C as a control signal. At the same time, the interrupt is confirmed by one of steps 5T105...5TIIO.

Therefore, the release mode cent is determined, and shutter control and release mode cent programming processing are performed.

(2) When the new flash device IO is attached to the old camera When the flash device 10 is attached to the old camera,
Since this camera does not have a terminal corresponding to terminal Co, terminal Co becomes an idle terminal.

For this reason, this terminal CO maintains a low voltage, and the microcomputer 15 has an output of the inverter 25 "Lo".
w” continues to be input.

With the above operation, it is determined that the flash device 10 is attached to an old camera, and the operation mode of the non-improved flash mechanism is established.
It outputs a ready signal from R) and transmits it to the R) fl terminal of the old camera, and outputs aperture information from the terminal Qo to the Q terminal of the old camera via the transistor 26. After the flash starts, a quench signal is sent to the terminal Qo. Flash information and camera information, such as input into the QO, are received and received in a known manner so that the flash device 10 operates with an unmodified flash mechanism.

On the other hand, when the power switch 30 is turned on, the transistor 3
2 turns on, turning on the power transistor 33, but
As a result of the microcomputer 15 identifying the camera as an old model, the transistor 35 cannot be turned on, so the power of the flash device circuit is not held.
The power transistor 33 continues to be turned on until the time until the light emission preparation is completed (the time until the main capacitor etc. reaches a predetermined charging pressure) ends, and then returns to the off state.

Note that the ON time of the power transistor 33 when power is not held may be set to a very short time, and a separate power switch may be provided for the power supply circuit such as the main capacitor.

(3) When an old flash device is attached to the new camera 11 When an old flash device is attached to the camera 11, the flash device does not have a terminal corresponding to terminal C, so terminal C has play. It becomes a terminal.

From this, when the drive circuit 46 generates a control signal, the terminal C becomes a high voltage, and the low voltage output of the comparator 48 becomes the high voltage of the microcomputer 36.
, and the camera determines that an old flash device is installed. That is, as explained in the flowchart of FIG. 7, the old flash device is monitored in step 5T100,
As a result of the program processing in step 4, the camera 11 enters the operating mode corresponding to the old flash device, inputs the ready signal through the terminal R and the transistor 38, and the aperture information signal through the terminal Q and the transistor 37, respectively. Further, camera information and flash information are exchanged by a known method such as outputting a quench signal through the transistor 43 and the terminal Q, and flash photography is performed.

"Effects of the Invention" As described above, the camera according to the present invention is provided with a control terminal, and based on the presence or absence of a voltage change at this terminal, it is possible to determine whether the attached flash device is a new or old model, and according to the determination, it is an old or new flash device. Since the camera mechanism unit linked to one of the flash devices is configured to shift to the operation mode, the flash device that can be attached and used is not specified, and the camera is compatible with the flash device.

In addition, the control terminal described above can be used as a signal terminal to switch between transmission of camera information and flash information, in addition to distinguishing between the new and old models, which simplifies the camera mechanism related to the signal transmission system, making it suitable for practical cameras. The structure is advantageous.

[Brief explanation of the drawing]

Figure 1 shows the new clip-on type flash device.
Partial perspective view of the new camera implementing the present invention, Part 2
The figure is a circuit diagram showing the input/output circuit of the flash unit connected to the terminal of the mounting foot and the input/output circuit of the camera connected to the terminal of the hot shoe. Figure 3 shows the control signal input by the control terminal of the flash unit. 4 is a time chart for explaining the operation of the flash device, FIG. 5 is a flowchart of the microcomputer provided in the flash device showing the power hold and discrimination operation of the flash device, and FIG. 6 is a time chart for explaining the operation of the flash device. A flowchart showing the operation of the microcomputer installed in the flash device when a control signal is input to the flash device, Figure 7 is a flowchart of the microcomputer installed in the camera, and Figure 8 shows the interrupt loop of the camera's microcomputer. FIG. 11...Camera 14...Hot shoe 36...Microcomputer 37.38...Transistor 43.44 forming a signal input path for flash information 46.Transistor 46 forming a signal output path for camera information・Drive circuit that outputs control signals
゛47...Resistor for distinguishing between the old type flash device and the new type flash device 48...Comparator C...Control terminal provided on the hot shoe along with other terminals Figure 5 Figure 6 Procedure Correction Showa March 17, 1963 Mr. Kunio Ogawa, Commissioner of the Japan Patent Office1, Indication of the case, Patent Application No. 301189 of 19882, Title of the invention: Camera with a function to respond to old and new flash devices, 3, person making correction Related: Patent applicant 2-36-9-6, Maeno-cho, Itabashi-ku, Tokyo, Subject of amendment: Detailed explanation column of the invention in the specification and Figure 6, Figure 7, Contents of amendment Contents of amendment as shown in the attached sheet (1) ) The computer 15 puts the flash stop control circuit into a standby state in the Detailed Description of the Invention section on page 22, line 8 to line 9 of the same page of the specification. This computer 15 shifts to flash emission mode. I will correct it. (2) When P3 is confirmed in the detailed explanation of the invention column from page 23, line 13 to line 16 of the same page of the specification,...
...The quench signal will now be accepted. When P3 is confirmed, the light emission mode is entered, and in the next step, light emission operation mode processing such as flash start and flash stop control is performed. I will correct it. (3) Correct Figure 6 of the cylinder in the drawing as shown in the attached sheet and change it to “Pulse 1”
Correct the description "St." to "Light emission operation mode switching" and "Quench signal reception" to "Light emission operation mode processing." Figure 6

Claims (2)

[Claims] (1) In addition to each terminal that electrically connects the old flash device, a control terminal that electrically connects the new flash device together with these terminals is provided, and the control terminal is connected to the installed flash device. 1. A camera having a function of responding to new and old flash devices, characterized in that the camera is provided with a discriminating means for determining that the flash device is an old type flash device if the terminal voltage of the terminal remains unchanged, and that it is a new type flash device if the terminal voltage changes. (2) In addition to each terminal that electrically connects the old flash device, a control terminal that electrically connects the new flash device together with these terminals is provided, and the control terminal is connected to the installed flash device. Discrimination means is provided to determine whether the terminal voltage of the flash device is an old flash device if there is no change, and the flash device is a new flash device if the terminal voltage changes. a first camera mechanism section that becomes a mode;
1. A camera having a responsive function for old and new flash devices, characterized by comprising a second camera mechanism section that enters an operation mode in response to determining whether it is a new flash device.