JPH0926622A - Display device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm the number of remaining frames capable of being photographed, whenever a frame is taken up after photographing and a remaining rewinding amount at the time of rewinding, in an external display part, in a camera successively feeding a film, for photographing. SOLUTION: When a cartridge 7 is loaded in the camera, the film is taken up to the first frame by a feeding motor 4 with a signal from a cartridge detector 9 and the greatest number of photographed frames is displayed on the frame counter 24 of a liquid crystal display part 2. The feeding of a frame after each photographing is detected by a photoreflector 8 and the frame counter part 24 has a subtraction display for the number of the remaining frames. When photographing up to the final frame is detected, an automatic rewinding state is obtained and the greatest number of the frames after being photographed is displayed in the frame counter part 24. Then, this counter part 24 has the subtraction display, whenever a frame is rewound, while the film is rewound by the feeding motor 4, to confirm the remaining time to rewind. Moreover, at the time of rewinding halfway, a manual rewinding switch 12 is depressed to rewind the film similarly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having a 7-segment frame counter display section of a liquid crystal of a camera or the like.

[0002]

2. Description of the Related Art Conventionally, when a film is loaded for film feeding of a camera, automatic loading (hereinafter, referred to as
There is a progressive camera in which "AL") is performed, the images are sequentially shot from the first frame, and the maximum number of shots (36 if 36 shots) is taken to rewind the film. At this time, the frame counter is "1" after the AL ends.
When the film is rolled up after shooting one frame,
The frame counter is incremented each time the film is wound up after the filming such as "2" is shown. And
For example, after 36 images have been taken, rewinding is started, and the frame counter is counted down every time one frame is rewound, and when the rewinding is completed, the user is instructed to take out the film.

Further, when a film is loaded, AL is performed and the film is wound up to the maximum number of images to be taken (36 for 36). Later, there is a prewind camera that rewinds the leader of the film. At this time, the frame counter is "0" when the film is loaded, but it counts up every time one frame is wound up by the AL, and shows "36" after the AL is finished, for example, and the film is rewound after the one frame is shot. Then, the frame counter is counted down every time the film is rewound after photographing such that "35" is indicated. After all frames have been taken, the leader of the film is rolled up, and when all the frames are rewound, the user is shown to take out the film.

[0004]

By the way, in the sequential camera of the above-mentioned conventional example, when there is no patrone confirmation window, only the number of shot images has been displayed on the frame counter.
When the user forgets the number of shots of the film that he / she puts in the camera, he cannot know what the remaining number of shots is. Also, in the prewind camera of the conventional example described above, when the film is loaded, it winds up to the last frame, so it is rewound at each shooting, and the remaining number of possible shots is always displayed on the frame counter. However, there is a problem that it is difficult to check the frame because the negative that has been photographed and developed has been photographed from the last frame, which is different from usual. .

In view of the above-mentioned problems of the conventional example, the present invention is a camera which can always display the remaining number of storable images and can grasp the remaining time of rewinding even when the filming is performed by sequentially winding the film. It is an object of the present invention to provide a display device.

[0006]

In order to achieve the above-mentioned object, the present invention detects the remaining number of storable images on a film and rewinds one frame at the time of rewinding operation in a camera for sequentially filming and filming. The main feature is that the state is displayed on the display means by the detection, and the number of shootable images can be surely confirmed, and the remaining time of rewinding can be grasped when rewinding.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The display device for a camera according to the present invention, when a film is loaded in the camera, a winding means for winding up one frame for each frame shooting sequentially from the first frame, and whether or not the film has been shot up to the maximum number of shots. The number of shots detecting means for detecting, the forced rewind detecting means for detecting whether or not the user is going to rewind, and the rewinding is started by the output from the number of shots detecting means or the forced rewind detecting means. It has rewinding means, rewinding amount detecting means for detecting the rewinding amount for one frame during operation of the rewinding means, and external display means having a frame counter. The display device of the camera having the above-described structure displays the countdown from the maximum number of shots of the loaded film on the display of the frame counter of the external display means every time the winding means is operated, and every time one frame is rewound during the rewinding. Display the countdown on.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the display device of the camera of this embodiment, and FIG. 2 is a configuration diagram of the liquid crystal display section thereof. In FIG. 1, 1 is a central processing unit (hereinafter abbreviated as CPU) for controlling the camera, 2 is a liquid crystal display unit on the outer surface of the camera, and 3 is a liquid crystal drive circuit for driving the liquid crystal display unit 2. And is connected to the CPU 1. Reference numeral 4 denotes a feeding motor that winds and unwinds the film F by a gear transmission system (not shown), and 5 a drive circuit that drives the motor 4, which is connected to the CPU 1.

Reference numeral 6 is a spool for winding the film F, 7 is a cartridge for storing the film F, 8 is a photoreflector for the CPU 1 to control the film feeding by detecting the perforation of the film F, and 9 is a cartridge. The detector detects the presence or absence of a cartridge and detects the maximum number of films by DX code or the like. Reference numeral 10 denotes a first switch of the camera. When the switch is turned on, distance measurement and photometry are performed by a device (not shown). Reference numeral 11 is also a second switch. When this switch is turned on while the first switch is still on, a shutter (not shown) is opened for a certain period of time to expose the film F, and the film F is wound up by one frame after photographing. Reference numeral 12 is a manual rewind switch, and when the user rewinds the film in the middle of shooting, the user presses this to start rewinding.

Next, in the liquid crystal display section 2 of FIG.
Is a date section for displaying the date or the date and time, and is composed of 6 sets of 7 segment sections 21a to 21f. 22 is a date section for displaying the date mode 22a or the caption mode 22b, and 23 is the slow sync mode display 2 of the camera.
3a, flash display 23b, red-eye reduction display 23c, one-point distance measurement display 23d, remote control display 23e, self-timer display 2
3f, mark indicating the state of the battery remaining amount display 23g, 24
Is a frame counter section consisting of two-digit 7-segments 24a and 24b for displaying the number of frames of the film, and 25 is a mark indicating whether or not the camera has a cartridge.

The display operation of this embodiment having the above configuration will be described with reference to FIGS. First, FIG.
(D) is a change in display when the cartridge is loaded (AL) in the camera. 1 after the Patrone 7 is loaded in the camera
The change in the display of the frame counter section 24 and the patrone mark 25 until the frame is set is the state before the patrone 7 is loaded in FIG. 3A, the patrone mark 25 is turned off, and the film counter section is turned off. 24 is "0".

When the signal of the cartridge detector 9 changes from this state and it is detected that the cartridge 7 is loaded,
As shown in FIG. 3B, the cartridge mark 25 is turned on and the feeding motor 4 is rotated in the winding direction to start AL. At this time, the photoreflector 8 is actuated to detect that the film F is wound up by the change of the signal due to the perforation of the film F. When the film winding can be detected, the display is changed as shown in FIG. 3C according to the change of the signal of the photo reflector 8 due to the perforation. In the displays (1) to (6), the 7-segment 24b on the right side of the frame counter section 24 shows that the film in the patrone 7 is rotating by moving the cutout portion of the outer peripheral segment clockwise. The 7-segment 24a on the left side of the frame counter section 24 represents the state of the film drawn from the cartridge 7 by blinking the lower segment.

Further, when a predetermined number of perforations are detected by the photo reflector 8, the first frame is displayed as shown in FIG.
As shown in (d), the maximum number of shooting frames of the loaded film F is displayed on the frame counter section 25.

Next, FIGS. 4A and 4C show changes in the display of the frame counter section 24 during the winding of one frame after photographing. FIG. 4A shows a state before winding, in which the first frame of the film having a maximum number of photographing frames of 36 frames is shown, and the frame counter section 24 is "36". When the shooting is completed, (1) to
In (6), similar to FIG. 3c, the film winding is displayed according to the change of the perforation of the film. That is, when eight perforations are detected by the photo reflector 8, one frame of winding is completed, and
As shown in (c), “35” is displayed in the frame counter section 24.
Is displayed. At this time, since the film F is wound up, it is actually the second frame, but since the number of remaining frames that can be photographed is displayed on the frame counter section 24, the maximum number of frames to be photographed is "36". Subtract the number of frames "1" to get 35, and the frame counter unit 2
That is, "35" is displayed in 4.

After this, after filming, every time the film is wound up, the third frame → “34”, the fourth frame → “33”, ...
36th frame → Frame counter 2 in the state of "1"
4 counts down.

Further, FIGS. 5A to 5D show changes in the display of the film count section 24 and the patrone mark 25 when the automatic rewinding is started after the maximum number of shots has been taken. Here, an example of a 36-sheet film is shown. FIG.
(A) shows the state before the maximum number of images (final frame) of the film is taken. After that, when a picture is taken, the camera system rotates the feed motor 4 in the winding direction to wind it up if it is necessary to wind it up, such as when imprinting a date, and then in the rewinding direction. And the photo reflector 8 is operated.

FIG. 5B shows a display during the rewinding of the film. First, the number of shots is displayed first. In this example, 36 shots of the film have been shot.
6 ”. Every time eight perforations are detected by the photo reflector 8 while rewinding, the frame counter unit 24 counts down by one as shown in the figure. When the first frame of the film is rewound and becomes the leader, as shown in FIG.
The film F is rewound into the cartridge 7 by changing the display according to the change of the signal by the perforation in the order of (6) to (1) opposite to (c) or FIG. 4 (b). Represents the state of being.

When the film F is completely rewound in the cartridge 7, the frame counter section 24 is set to "0" and the cartridge mark 25 blinks as shown in FIG. I have taken the picture, so I instruct them to take it out.

Further, FIGS. 6A to 6D show changes in the display of the film counter section 24 and the cartridge mark 25 when the user presses the manual rewind switch 12 to perform the rewinding start operation. 29 here
The state after taking a picture is shown. FIG. 6A shows that up to 29 images can be taken with the 36-image taking film, and the remaining 7 images can be taken. At this time, when the user presses a rewinding start switch (not shown), the feeding motor 4 is rotated in the rewinding direction to start rewinding and actuate the photo reflector 8.

FIG. 6B shows a display during film rewinding. First, the number of shots of the first shot is displayed. In this example, up to 29 shots of the 36-shot film have been shot, so the number starts from "29". Every time eight perforations are detected by the photo reflector 8 while rewinding, the frame counter unit 24 counts down by one as shown in the figure. The subsequent displays shown in FIGS. 6 (c) and 6 (d) are the same as those shown in FIGS. 5 (c) and 5 (d).
It is similar to the display shown in.

[0021]

Correspondence between the Invention and Embodiments In the above embodiments, C for driving the feeding motor 4 and detecting the output of the photo reflector 8
PU1 drives the feeding motor 4 by the winding means of the present invention, CPU 1 controls the number of shots by the number of shots detection means of the present invention, and CPU 1 detects the operation of the manual rewind switch 12 by the forced rewind detection means of the present invention. The CPU 1 for detecting the output of the photoreflector 8 serves as the rewinding means of the present invention, and the output detection of the photoreflector 8 by the CPU 1 serves as the rewinding amount detecting means of the present invention, and the liquid crystal display section 2 including the frame counter section 24 serves as the main body. They correspond to the external display means of the invention. The above is the correspondence relationship between each configuration of the embodiments and each configuration of the present invention, but the present invention is not limited to the configurations of these embodiments, and the functions shown in the claims or the functions of the configurations of the embodiments are It goes without saying that any structure can be used as long as it can be achieved.

[0022]

As described above, according to the present invention, when the film is loaded, the winding means for winding up one frame for each frame from the first frame, and detecting whether or not the film has been photographed up to the maximum number of frames can be detected. The number of shots detecting means, the forced rewinding detecting means for detecting whether or not the user intends to rewind, and the rewinding means for starting the rewinding by the output from the number of shots detecting means or the forced rewinding detecting means. And a rewinding amount detecting means for detecting the rewinding amount for one frame while the rewinding means is in operation, and an external display means having a frame counter. By counting down the frame counter every time you wind up, you can always display the remaining number of shots,
When rewinding, a countdown display is displayed every time one frame is rewound, and the remaining time of rewinding can be easily grasped.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a camera having a display device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the external liquid crystal display unit.

FIG. 3 is an explanatory diagram showing a change state of the display at the time of AL,
(A) shows the state before loading the cartridge, (b) shows the loading state of the cartridge, (c) the AL winding state, and (d) shows the AL completed state.

FIG. 4 is an explanatory diagram showing a change state of display when one frame is wound, (a) is a state before winding, (b) is a state during winding of the next one frame after shooting, and (c) is the same. The winding end state is shown.

5A and 5B are explanatory diagrams showing a change state of the display at the time of rewinding after the maximum number of shots is shot, in which FIG. 5A is a state before the final frame shooting, FIG. 5B is a rewinding state after the final frame shooting,
(C) shows the state of rewinding the leader portion, and (d) shows the state of rewinding the entire film into the cartridge.

6A and 6B are explanatory diagrams of a change state of a display at the time of rewinding after a rewinding start operation, in which FIG. 6A is a state in which the remaining photographing is possible, FIG. 6B is a state during rewinding in that state, and FIG. The leader portion is rewound, and (d) shows the film completely rewound into the cartridge.

[Explanation of symbols]

1 ... CPU, 2 ... Liquid crystal display unit, 3 ... Liquid crystal drive circuit, 4 ... Feed motor, 5 ... Motor drive circuit, 6 ...
Spool, 7 ・ ・ Patrone, 8 ・ ・ Photo reflector, 9 ・ ・ Patrone detector, 10 ・ ・ First switch,
11 ... 2nd switch, 12 ... Manual rewind switch, 21a-21f ... Date part, 22a, 22
b ... Mode display mark, 23a to 23g ... Display mark of various setting states, 24 ... Frame counter section, 25
..Display marks with or without Patrone, F ..

Claims (1)

[Claims] 1. When the film is loaded in the camera, a winding means for winding up one frame for each frame shooting in sequence from the first frame, and a number of shots detecting means for detecting whether or not the maximum number of shots of the film has been shot is used. A forced rewind detecting means for detecting whether or not a person intends to perform rewind, a rewinding means for starting rewinding based on an output from the photographed number detecting means or the forced rewind detecting means, and the rewinding means. It has rewinding amount detecting means for detecting the rewinding amount for one frame during operation and external display means having a frame counter, and the frame counter of the external display means is loaded every time the winding means is operated. A special feature is that the countdown is displayed from the maximum number of shots of the film, and the countdown is displayed every time one frame is rewound during rewinding. Display device of camera to collect.