JP3094649B2 - Shooting assistance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing assisting device for photographing when a subject blocks a transmitting device and a receiving device facing each other.

[0002]

2. Description of the Related Art Conventionally, a photographing assisting device for photographing when a subject blocks between a transmitting device and a receiving device facing each other has been developed.
It consists of a transmitting device that emits a specific signal, and a receiving device that receives this signal and sends a control signal to the camera when the signal is interrupted, and changes the operation mode of the transmitting device, or When the power was turned off, the transmitting device stopped transmitting a specific signal.

[0003]

However, in the conventional photographing assistance device, if the operation mode is changed or the power is turned off during the operation of the transmission device, continuous transmission of signals is stopped. The receiving device determines that the subject has blocked the space between the transmitting device and the receiving device, and sends a control signal such as a release signal to the camera, so that the camera is sometimes released.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a photographing assistance device which prevents an unnecessary release of a camera by changing an operation mode. To provide.

[0005]

According to the present invention, there is provided a photographing assisting apparatus for transmitting a reset signal when a continuous transmission mode is changed to another mode. The receiving device does not send a control signal to the camera upon receiving the reset signal so that the camera is not unnecessarily released. In addition, the mode switch of the transmitting device is also used as a power switch, so that the power is not turned off at once from the continuous transmission mode so that the camera is not unnecessarily released.

[0006]

According to the present invention, in an operation of releasing a camera when a subject crosses between a transmitting device and a receiving device facing each other, equivalently, the transmission mode of the transmitting device is changed or the power is turned off. It is possible to prevent the receiving apparatus from judging that the subject has crossed and sending an unnecessary release signal to the camera.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall external view showing a configuration according to an embodiment of a photographing assistance device according to the present invention. FIG. 1 (a) is an external view of a transmitting device, and FIG. 1 (b) is an external view of a receiving device. In the figure, reference numeral 10 denotes a transmitting device, and 1 denotes a transmitting device 10.
2, a light emitting portion for optical signals, a mode switch 3 for selecting and switching between a normal mode "NORM" also serving as a power switch and an interrupt mode "INT", and a transmission button 4. In FIG. 1B, reference numeral 20 denotes a receiving device, 11 denotes a main body of the receiving device 20, 12 denotes a light-receiving window for optical signals, and 13 denotes a connector including a cable and a connector for connecting to a camera (not shown).

FIG. 2A is a circuit block diagram of the transmission device 10, and FIG. 2B is a circuit block diagram of the reception device 20, respectively. In FIG. 2A, BAT is a battery, MCU1 is a control microcomputer, SW1.
Is a mode switch, which corresponds to the mode switch 3 also serving as the power switch in FIG. SW2 is a transmission button, and corresponds to the transmission borane 4 in FIG. Also, R
1 is a resistor, R2 is a resistor, LED is a light emitting diode that emits an optical signal, and Q1 is a transistor for driving the light emitting diode LED.

In FIG. 2B, SPD is a photodiode for receiving an optical signal output from the transmitting device 10, AMP is an amplifier for amplifying the signal received by the photodiode SPD, and MCU 11 judges the received signal. Microcomputer for outputting a camera control signal, R
11 is a resistor, Q11 is a transistor for outputting a control signal to the camera, and GND and OUT are terminals for connecting to a camera (not shown). .

FIG. 3 is a view for explaining an example of use of the photographing assisting device according to the present invention. In FIG. 3, a receiving device 20 is attached to a camera C, a signal is transmitted from a transmitting device 10 from a remote place, Release. Now, Figure 1
In (a), the mode switch 3 of the transmitting device 10 is set to “N”.
When the transmission button 4 is pressed while the camera is at the position of "ORM", an optical signal is emitted, the receiving device 20 receives the optical signal, and the camera C is released by sending a release signal to the camera C.

Here, when the mode switch 3 in FIG. 1A is at the "INT" position, the transmitting device 10 continuously transmits an optical signal at predetermined time intervals. Further, when this signal is received by the receiving device 20, if a signal can be received at a predetermined time interval, a release signal is not transmitted to the camera C. If a signal is not received, a release signal is transmitted to the camera C. It has become. FIG. 3 shows that the camera C is released when the subject crosses between the transmitting device 10 and the receiving device 20 which are opposed to each other in the usage in this mode, so that unmanned shooting is possible.

FIG. 4 shows a flowchart of the transmission apparatus 10 according to the present invention. In the figure, when the power switch is turned on, the microcomputer MCU1
Operation starts. First, in step 101, the state of the mode switch SW1 is read. Mode switch SW
If the state of No. 1 is in the "NORM" position, step 1
Go to 02. In step 102, it is determined whether or not the transmission button SW2 has been turned on. This signal is output from the light emitting diode LED of FIG. When the release signal is output, the process returns to step 101. If the transmission button SW2 has not been pressed in step 102, step 101
Return to

If the mode switch SW1 is not at the "NORM" position in step 101, it is determined that the mode switch SW1 has been switched to the "INT" position, and the routine proceeds to step 104. In step 104, a timer is set. This timer determines a time interval for outputting a signal at the position of “INT”. This timer is built in the microcomputer MCU1. In step 105, "IN
The signal at the position "T" is output, and after the time set in step 106 elapses, the process proceeds to step 107.

In step 107, the mode switch SW1
If the mode is not the mode at the “NORM” position, that is, if the mode is still at the “INT” position, the process returns to step 104. If the state of the mode switch SW1 has changed to the "NORM" position in step 107,
Proceeding to step 108, a reset signal is output. This reset signal is a signal that notifies the receiving device 20 that the mode at the position of “INT” has ended. After transmitting the reset signal in Step 108, Step 10
Return to 1.

FIG. 5 shows a flowchart of the receiving apparatus 20 according to the present invention. In FIG. 2, when the operation of the receiving device 20 starts, a signal transmitted from the transmitting device 10 is received in step 201. If no signal comes here, this operation is repeated. Upon receiving the signal, the type is determined in step 202. If this signal is a signal at the “NORM” position, step 203
Then, a release signal is output to the camera C, and the process returns to step 201. If the signal received in step 202 is not the signal of the position of “NORM”, step 20
Proceed to 4.

In step 204, this signal is "INT"
It is determined whether the signal is at the position of “INT”. Step 205
To set the timer, and in step 206, enable the timer interrupt. Then, step 201
Return to Here, the time set by this timer is set slightly longer than the timer time set by the transmitting device. Therefore, if the signal at the position “INT” from the transmitting device 10 is received within the timer time set by the receiving device 20,
At step 205, a timer is always set, and no interruption by this timer occurs.

If a subject blocks the space between the transmitting device 10 and the receiving device 20, the signal at the “INT” position transmitted from the transmitting device 10 at predetermined time intervals cannot be received. A timer interrupt will occur. If a timer interrupt occurs, step 20
In step S8, a release signal is output to the camera C, and the process returns to step S201. That is, when the subject blocks between the transmitting device 10 and the receiving device 20, the camera C is released.

Here, the mode of the transmitting apparatus 10 is "NOR".
M ”, the transmission device 1
From 0, a reset signal is transmitted. If it is determined in step 204 that the signal is not the signal at the position of “INT”, that is, it is a reset signal, the timer interrupt is prohibited in step 207, and the process returns to step 201. Therefore, no release signal is sent to the camera C at this time.

[0019]

As described above, according to the present invention,
A third signal is transmitted to the receiving device when the mode of the transmitting device is changed in the photographing assist device that releases the shutter of the camera when the subject crosses between the transmitting device and the receiving device facing each other. Therefore, it is possible to prevent the camera from being unnecessarily released by changing the mode. Further, the switching means of the transmitting device also serves as a power switch, and cannot directly turn off the power from the first mode. When the power is turned off, the power always goes through the second mode. Is transmitted, so that an extremely excellent effect is obtained that the camera is not released unnecessarily.

[Brief description of the drawings]

FIG. 1 is an external view showing an overall configuration of a photographing assistance device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration according to an embodiment of a photographing assistance device according to the present invention.

FIG. 3 is a diagram illustrating an example of use of a photographing assistance device according to the present invention.

FIG. 4 is a diagram showing a flowchart of a transmission device relating to the photographing assistance device according to the present invention.

FIG. 5 is a view showing a flowchart of a receiving device related to the photographing assistance device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body of transmitting apparatus 2 Light emitting part of optical signal 3 Mode switch also serving as power switch 4 Transmitting button 10 Transmitting apparatus 11 Main body of receiving apparatus 12 Light receiving window of optical signal 13 Connector 20 Receiving apparatus BAT Battery MCU1 Control microcomputer SW1 Mode switch also serving as power switch SW2 Send button R1 Resistance R2 Resistance LED Light emitting diode Q1 Transistor SPD Photodiode AMP Amplifier MCU11 Microcomputer R11 Resistance Q1 Transistor GND terminal OUT terminal

Continuation of the front page (56) References JP-A-63-121032 (JP, A) JP-A-63-121033 (JP, A) JP-A-63-24233 (JP, A) JP-A-62-222230 (JP) JP-A-62-127832 (JP, A) JP-A-62-180637 (JP, A) JP-A-63-66828 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB (Name) G03B 17/38

Claims (2)

(57) [Claims] 1. A transmitting device for transmitting a specific signal, and a receiving device for receiving the specific signal and transmitting a control signal to a camera according to a type of the signal, wherein the transmitting device is the receiving device Operating means operated to transmit a transmission signal to a first mode, a first mode for continuously transmitting a first signal, and transmitting a second signal only when a transmission operation of the operating means is performed Switching means for switching between a first mode and a second mode, wherein a third signal different from the first signal is transmitted when detecting that the mode has been switched from the first mode to the second mode. When receiving the first signal, the receiving device does not send a control signal to the camera while receiving the first signal, and receives the first signal within a predetermined time. When I could n’t A photographing assistance device having a third mode for transmitting a control signal, wherein the operation in the third mode is canceled when the third signal is received during the operation in the third mode. . 2. The power supply device according to claim 1, wherein the switching means for switching between the first mode and the second mode also serves as a power switch, and turns off the power from the first mode unless passing through the second mode. A photographing assistance device characterized by the fact that it must not be.