JP2787223B2 - Camera with remote control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera with a remote controller, and more particularly, to a camera having a remote controller that enables a shutter release by remote control.

2. Description of the Related Art Conventionally, various cameras incorporating a remote control device have been proposed. Usually, a remote control transmitter for outputting a remote control signal is attached to a camera, and the remote control is detached from the camera when remote control is performed. A signal is sent to the receiver of the camera so that exposure can be controlled after a predetermined time.

Further, in the case of performing bulb photography in a conventional remote control device, there is a remote control device in which bulb photography is started by the remote control device after a time is determined by a bulb time setting means on the camera side.

[Problems to be Solved by the Invention] By the way, as in the former case, in a camera which starts self-time of a camera by a remote control signal and measures the self-second and then shoots, the remote control device is operated by mistake. In some cases, a useless photograph is taken because cancellation is impossible.

When the camera is provided with a setting unit for setting the bulb time for strobe photography as in the latter case, if a plurality of times can be set, the camera becomes complicated and the setting time is increased. Further, setting the valve time on the remote control device also complicates the operation.

Further, there is a type in which the valve time is controlled by the time during which the release portion of the camera is pressed, but when implemented with a remote control device, reception on the camera side may become impossible due to external light or external radio waves, The shutter is inadvertently closed during the operation of the valve, resulting in a shooting error.

The present invention has been made in view of such a point.
An object of the invention described in (1) is to provide a camera with a remote control device that can cancel shooting only by a remote control signal from the remote control device and does not perform useless shooting.

In addition, the invention according to claim 2 uses only a signal from the remote control device to operate as a release signal at the time of normal photographing, and also serves as a shutter open signal and a close signal at the time of bulb mode photographing, thereby providing a valve time. It is an object of the present invention to provide a camera with a remote control device that does not require the setting of a remote control and facilitates operation with the same signal.

[Means for Solving the Problems] In order to solve the problems, the invention according to claim 1 provides a remote control transmitter having signal generation means for outputting a remote control signal, and a remote control signal from the remote control transmitter. A camera having a receiving unit for receiving the image, and a photographing control unit for performing exposure control after a predetermined time by inputting the remote control signal to the camera, and the photographing when the remote control signal is received again before the exposure control. Reset means for resetting the control means.

According to a second aspect of the present invention, there is provided a remote control transmitter having a signal generating unit for outputting a remote control signal, and a camera having a receiving unit for receiving a remote control signal from the remote control transmitter. Shutter opening means for opening the shutter device of the camera when the receiving means inputs, and operating the receiving means during operation of the shutter opening means; And a shutter closing means for performing a closing operation of the shutter device.

[Operation] According to the invention described in claim 1, exposure control is performed after a predetermined period of time by a camera inputting a remote control signal, but when a remote control signal is received again before this exposure control, a photographing control unit is performed. Is reset to cancel shooting control, and unnecessary shooting is not performed.

According to a second aspect of the present invention, when the remote control signal is input to the receiving means of the camera, the shutter of the camera is opened, and the receiving means is operated during the operation of the shutter opening means. Is received by the receiving means, the shutter device of the camera is closed. As described above, only the signal from the remote control device is used to operate as a release signal at the time of normal photographing, and it is unnecessary to set the valve time by using both the open signal and the close signal of the shutter at the time of bulb mode photography. At the same time, operation is facilitated with the same signal.

[Embodiment] Hereinafter, an embodiment of a camera with a remote controller according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a camera with a remote control device in a state where the remote control device is assembled, and FIG. 2 is a perspective view of the camera with a remote control device in a state where the remote control device is removed.

In FIGS. 1 and 2, reference numeral 1 denotes a photographing lens provided in a camera 20, and a photometric light receiving unit 2 and a remote control receiving unit 3 are provided near the photographing lens 1, and these are slidable to the camera. The barrier 4 provided is covered when not in use and is opened when used.

A finder 5 is provided in front of the camera 20 and above the photographing lens 1. The display in the finder 5 allows the user to arbitrarily select a distance measuring point as shown in FIGS. 8 (a) to 8 (f). ing.

On the left and right sides of the finder 5, a light-emitting side distance measuring window 6 and a light receiving side distance measuring window 7 are provided, and a strobe light emitting section 8 is provided at an end. In addition, for example, 5
A plurality of display LEDs 9 are provided, and the display LEDs 9 are sequentially turned on at intervals of one second at the time of shooting in the bulb mode, so as to notify the exposure time of the bulb. In the case of normal remote control shooting, the display after shooting is completed
D9 may blink for a predetermined time.

A display unit 10 and a selection switch 11 are provided above the camera 20, and the selection switch 11 is used to arbitrarily select a ranging point.

A remote control transmitter 21 for outputting a remote control signal is detachably provided on the side of the camera 20. Remote control transmitter
A release button 22 and a remote control light emitting unit 23 that emits light when the release button 22 is operated are provided on the remote controller 21, and this light is received by a remote control light receiving unit 3 of a receiving unit provided in the camera 20 for receiving a remote control signal. Release button 22
Is such that S1 and S2 are sequentially turned on by two strokes, and the output of the remote control signal is output only when S2 is turned on. When mounted on the remote control transmitter 21, photometry and distance measurement are performed when S1 is ON, and the shutter is operated when S2 is ON. When a remote control signal is output in a state where the remote control transmitter 21 is detached, the operation is performed in the order of photometry, distance measurement, and shutter only by a signal by ON of S2.

On the back side of the remote control transmitter 21, a socket 24 and a switch button 25 are provided in a plug provided in a remote control mounting portion of the camera 20.
26 and the switch button 27 are provided. The connection between the socket 24 and the plug 26 connects the remote controller side circuit and the camera side circuit. When the remote controller transmitter 21 is removed, the switch buttons 25 and 27 are turned ON, and independent circuits are formed.

In addition, a valve mode selection switch 28 is provided on a mounting portion of the remote control transmitter 21 of the camera 20 so that the valve mode selection switch 28 does not operate except during remote control.

FIG. 3 is a schematic circuit diagram of a camera with a remote controller according to the present invention.

In FIG. 3, a camera-side circuit provided in the camera 20
Reference numeral 30 includes a battery 31, a microcomputer 32, a receiving circuit 33, a remote control light receiving unit 3, a switch button 27, and the like. Remote control circuit 34 provided in remote control transmitter 21
Is composed of a battery 35, a release button 22, a transmission circuit 36, a remote control light emitting unit 23, a switch button 25, and the like.

Therefore, in a normal shooting state without remote control, the remote control transmitter 21 is attached to the camera 20 for use. At this time, the socket 24 of the remote control side circuit 34 and the plug of the camera side circuit 30 are connected.
26 are connected and conducting, and the normally closed switch buttons 25 and 27 are pressed and opened on the opposing surfaces. For this reason, the release button 22 is connected to the camera-side circuit 30, and normal photographing is performed by operating the release button 22.

In order to perform remote control, the remote control
When detached from the remote control 20, the remote control side circuit 34 of the remote control transmitter 21 and the camera side circuit 30 of the camera 20 are shut off, and the normally closed switch buttons 25 and 27 are closed. Therefore, the remote control side circuit 34 and the camera side circuit 30 operate independently of each other. When the release button 22 is operated, the transmission circuit 36 operates and the light emitting section 23 emits light. This light is detected by the remote control light receiving unit 3, and at this time, a start signal for remote operation is output from the receiving circuit 33 to the microcomputer 32, and the release is performed.

The microcomputer 32 includes a photographing control unit that performs exposure control after a predetermined time when the camera 20 inputs a remote control signal, and a reset unit that resets the photographing control unit when the remote control signal is received again before the exposure control. And is composed.

Also, the microcomputer 32 receives the remote control signal by inputting the remote control signal into the shutter opening means for opening the shutter device of the camera, and operates the receiving means during the operation of the shutter opening means to receive the remote control signal. Shutter closing means for performing a closing operation of the shutter device of the camera when the means inputs.

The microcomputer 32 includes a photometric device 50, a photographing information input device 51, an EF charging circuit 52, an EF light emitting circuit 53, and an exposure control circuit.
54, the lens control circuit 55, the display unit 10, and the display LED 9 are connected. These are well-known components, and the description thereof is omitted, but a wide-area ranging device 40 is further connected.

This wide-area ranging device 40 is configured as shown in FIGS. The microcomputer 32 drives the light emitting element driving circuit 41 to drive the light emitting elements a to e of the light emitting element array 42.
Are sequentially emitted, and the light is reflected by the subject as shown in FIG. 4 and is incident on the light receiving element 45 having the light receiving areas A to H, whereby the photocurrents i1 and i output by the light receiving element 45 are output.
The distance detection circuit outputs the distance information to the microcomputer 32 as shown in FIG. That is, the luminous flux of the light emitting element a of the light receiving element array 42 is
When the light is reflected by the object D1 and enters the light receiving element 45, as shown in FIG. 6, A among the light receiving areas A to H of the light receiving element 45 receives the strongest light. , i2, the incident position detection circuit detects and outputs information indicating that the distance is D1 to the microcomputer 32.

In the case where the object distance is D2 to D4, and also for the light beams of the light receiving elements b to e of the light receiving element array 42, the light receiving area where the light receiving element 45 receives the strongest light is as shown in FIG. Detects it and outputs distance information to the microcomputer 32.

The distance information given by the wide area distance measuring device 40 is the object distance of the area indicated by a 'to e' in FIG. 3 with respect to the photographing screen. The figure shows the wide-area ranging device 40 in which only one light receiving element 45 is arranged.
The two light projecting lenses 44 and the light receiving elements 45 are disposed symmetrically with respect to the light projecting lens 43 and the two light receiving elements 45.
In the case of a so-called dual sensor method (trinocular distance measuring method) that outputs distance information based on the output currents i1 and i2, a disadvantage in the case where only one light receiving element 45 is provided, for example, for the distance measurement. It is possible to eliminate the disadvantage that the projected light beam illuminates only half of the object, and thus the light receiving image on the light receiving element 45 side is lacking, so that the luminance center of gravity is biased and the distance measurement information becomes inaccurate.

In the case of this wide area ranging, as shown in FIGS. 8 (a) to 8 (f), the distance can be visually recognized in the viewfinder 5. At the time of normal photographing, the distance measuring point X can be arbitrarily selected by the selection switch 11 among the five wide area distance measuring points. The display of the distance measurement points is performed by a liquid crystal plate (not shown) provided in the viewfinder.

When the selection switch 11 is pressed for the first time, first, only light emission is performed at the central portion to perform distance measurement. The distance measurement point X is sequentially shifted from the center to the right by the second pressing, and returns to the wide-area ranging state again by the sixth pressing.

When detaching the remote control transmitter 21 from the camera 20 and performing remote control shooting, the photographer often shoots without checking the distance measuring point X in the viewfinder, so the auto focus point differs from the point to be actually measured. Since the wrong distance measurement is performed, the distance measurement point X is forcibly set to the wide area distance measurement mode.

In this manner, the wide-area distance measurement mode is set, and the photographing lens 1 is moved so as to focus on a point on the short distance side among the above-described five-point distance measurement results, and photographing is performed.

Further, when the remote control transmitter 21 is used, the camera 20 performs slow synchro photographing because blur does not occur as in the case of photographing by the photographer.

Therefore, by inputting the signal of S2 before the signal of S1 on the camera side, it is determined that shooting is performed by the remote control signal by the remote control transmitter 21, or the ON / O of the switch button 27 is turned on.
The FF is detected (not shown), and it is determined whether or not remote control shooting is performed. In the case of remote control shooting, slow synchro shooting is selected as a shooting mode, or ranging is performed in a wide area ranging mode.

FIG. 9 is an operation flowchart of the camera with the remote control device.

When the main switch is input, it is determined in step a whether or not the remote control mode is set. If not, the switch is operated by operating the release button.
When S1 is turned on (step b), photometry and distance measurement are performed (step c).

Next, when the switch S2 is turned on by operating the release button (step d), exposure control is performed (step e). When this exposure is performed, one-frame film is fed and the process ends normally (step d). Step f).

In step a, if the remote control mode is selected, the remote control signal is received by the operation of the remote control transmitter 21 (step g). When the remote control signal is received, the interval timer is started (step h). ). The interval timer is set to, for example, 2 seconds, and is set so that the photographer does not operate the remote control transmitter 21 to photograph the operation state of the remote control transmitter 21.

It is determined in step i that the remote control signal has been received. When the remote control signal is received, the process jumps to step g, where the remote control signal is not input again, and the remote control shooting is released. , To prevent accidental shooting.

When the interval timer time elapses (step j), it is determined whether or not the bulb mode shooting has been performed (step k). If not, the photometry and the distance measurement are performed (step l).

Next, exposure control is performed (step m), and when this exposure is performed, one-frame film is fed, and photographing by remote control ends (step n).

In the case of bulb mode photographing, distance measurement is performed (step o), the shutter is opened (step p), and a timed timer is started (step q). For example, 20 seconds are set by a timed timer, and within this time, the remote control signal is determined to be received and received (step r).
F (step s), and when the time is over (step t), the shutter is closed and the photograph is taken, and the film is fed by one frame, and the photographing is completed.

As described above, only the remote control signal is used to operate as a release signal at the time of normal photographing, and at the same time, both of the shutter opening signal and the shutter closing signal are used in the valve mode photographing, so that the setting of the valve time is unnecessary and the same. The operation is easy with the signal.

In the case of a camera that automatically rewinds after the film has been stretched after the last frame of the film has been shot, the receiving circuit on the camera is activated during or after rewinding, and during this time, when a remote control signal is received, shooting is performed. Therefore, the display LED 9 is blinked differently from other modes as a photographing impossible signal to indicate to the photographer that photographing is impossible. In addition, with the focus detection device of the TTL phase difference detection system, the focus adjustment device of the camera repeatedly operates due to lack of contrast of the subject, etc., and it may take a long time until shooting, but in such a case, Cancellation may be performed by a signal from a remote controller.

[Effects of the Invention] As described above, according to the first aspect of the present invention, a photographing control unit that performs exposure control after a predetermined time by inputting a remote control signal to a camera, and receives the remote control signal again before exposure control Reset means for resetting the photographing control means in the event that a remote control signal is received again before exposure control, so that the photographing control means is reset and the photographing control is canceled, so that unnecessary photographing is performed. There is no.

According to a second aspect of the present invention, when the remote control signal is input to the receiving means of the camera, the shutter of the camera is opened, and the receiving means is operated during the operation of the shutter opening means. When the receiving means inputs, the shutter operation of the camera is closed, so that only the signal from the remote control device is used to operate as a release signal at the time of normal shooting, and an open signal of the shutter at the time of bulb mode shooting. Can also serve as a closing signal,
The simple structure eliminates the need for setting the valve time,
Operation can be facilitated with the same signal.

[Brief description of the drawings]

1 is a perspective view of a camera with a remote control device in a state where the remote control device is assembled, FIG. 2 is a perspective view of the camera with the remote control device in a state where the remote control device is removed, and FIG. 4 to 7 are diagrams showing the configuration of a wide-area distance measuring device, and FIGS. 8 (a) to 8 (f).
FIG. 9 is a view showing distance measuring points of a finder, and FIG. 9 is an operation flowchart of a camera with a remote control device. In the figure, reference numeral 20 denotes a camera, 21 denotes a remote control transmitter, 22 denotes a release switch, 24 denotes a socket, 26 denotes a plug, 25 and 27 denote switch buttons, 32 denotes a microcomputer, 33 denotes a receiving circuit, and 36 denotes a transmitting circuit.

Claims (2)

(57) [Claims] 1. A camera comprising: a remote control transmitter having a signal generating means for outputting a remote control signal; and a receiving means for receiving a remote control signal from the remote control transmitter.
The camera includes: a photographing control unit that performs exposure control after a predetermined time by inputting the remote control signal to the camera; and a reset unit that resets the photographing control unit when the remote control signal is received again before the exposure control. A camera with a remote controller. 2. A camera comprising: a remote control transmitter having a signal generating means for outputting a remote control signal; and a receiving means for receiving a remote control signal from the remote control transmitter;
Shutter opening means for opening the shutter device of the camera when the receiving means inputs the remote control signal; operating the receiving means during operation of the shutter opening means; and inputting the remote control signal to the receiving means And a shutter closing means for closing the shutter device of the camera.