JPH0934005A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily inform a photographer that rewinding has been automatically started by visually confirmably displaying the fact that a rewinding operation is in execution on a display means, when the rewinding of a film is started. SOLUTION: A camera controller 1 is constituted of a one operation microcomputer provided with a ROM, a RAM, an A/D converter, a PWM circuit, etc., inside and controls peripheral circuits in a camera main body, in accordance with a program stored in the ROM, to overall control the operation of the camera. A display part 7 is provided with external and internal display units, etc., for displaying various kinds of information such as a shutter speed and a stop value and includes illumination in a finder as well. In this constitution, when the film ends after photographing and the automatic rewinding is started, for instance, an illuminator in the finder is turned on to confirm the rewinding state displayed on the display unit. Therefore, the photographer can confirm whether it is in an automatic or manual rewinding state, through the finder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a display on a display in a finder when rewinding a film that has been shot.

[0002]

2. Description of the Related Art Conventionally, a film rewinding device using a motor has a lot of noise generated from the motor and gears at the time of rewinding, and rewinding in a quiet environment is a nuisance to surrounding people. Becomes For this reason, a setting means for setting the automatic rewinding at the end of the film is provided, a mode for slowing down the rewinding speed and quiet rewinding mode (hereinafter, silent rewinding mode) is provided, and a normal rewinding mode ( In the following, it is known to provide a switching means for switching to a high-speed rewinding mode) and switch between them according to the purpose.

[0003]

However, in the above-mentioned conventional example, after the film is taken, the film is finished and the rewinding is automatically started. At that time, in the silent rewinding mode, or due to ambient noise or the like. If you start rewinding in an environment where you cannot hear the rewinding sound, the photographer keeps looking at the viewfinder and not knowing that rewinding has started. I couldn't cut it and missed a photo opportunity.

An object of the invention according to the present application is to provide a camera which can easily inform a photographer that rewinding has started automatically.

[0005]

A first structure for realizing the object of the invention according to the present application is, as described in claim 1, a feeding control means for controlling the rewinding of the film when the film is finished. , Display means provided in the viewfinder,
In a camera having display control means for driving and controlling the display means, the display control means indicates that the rewinding operation is being performed on the display means when the rewinding of the film is started by the feeding control means. It is characterized in that it is displayed visually.

A second structure for realizing the object of the invention according to the present application is, as described in claim 2, in claim 1.
The display control means does not display on the display means when the manual rewind instruction means is operated during rewinding.

A third structure for realizing the object of the invention according to the present application is, as described in claim 3, a feeding control means for controlling rewinding of a film, and the feeding automatically when the film is finished. In a camera having a second means for rewinding by a feed control means, a display means provided in a finder, and a display control means for drivingly controlling the display means, the first rewinding means for rewinding a film. Is started, the display control means is caused to visually display that the rewinding operation is being performed.

[0008]

FIG. 1 shows a first camera according to the present invention.
It is a block diagram showing an embodiment.

In FIG. 1, reference numeral 1 is a camera controller,
It is composed of a one-touch microcomputer having a ROM, a RAM, an A / D converter, a PWM circuit, etc. inside, and controls peripheral circuits in the camera body according to a program stored in the ROM to integrally control the operation of the camera. Reference numeral 2 is a photometry circuit for performing photometry to determine the exposure amount, 3 is a distance measurement circuit for detecting the focus position and moving the photographing lens to the focus position, and 4 is an exposure operation by controlling opening / closing of the shutter. A shutter control circuit 5 for controlling the lens, a lens communication circuit 5 for controlling the lens by communicating with the lens, and a strobe control circuit 6 for controlling the stroboscopic light emission.

Reference numeral 7 denotes a display section having an external display, an internal display, etc. for displaying various information such as shutter speed and aperture value, and also includes illumination in the finder.

Reference numeral 8 is a DX reading circuit for reading the DX code of the film, 9 is a perforation detection circuit used for detecting the perforation of the film and indexing the frame, and 10 is a motor for controlling the driving of the film. Including a feeding control circuit, 11 is a photometry for starting photometry and distance measurement, a distance measurement switch (SW1), and 12 is a release switch (SW) for starting a release operation.
2) and 13 are rewinding switches (REW) for forcibly starting the rewinding of the film being photographed, 14 is a back cover detection switch (BP) for detecting the opening and closing of the back cover of the camera, and 15 is A cartridge detection switch (PT) for detecting the presence or absence of a cartridge, 16 is a dial input section for generating two-phase pulses, 17 is a power supply circuit for supplying power to each part of the camera, and 18 is a power supply for the entire camera. It is a battery.

FIG. 3 shows a display mode of the display unit 7 in the fully lit state in the present embodiment. (A) is an external display state of an external display provided outside the camera, and (b) is a viewfinder. It is an internal display state of the internal display provided inside.

FIG. 2 is a flow chart showing the rewinding operation of the camera according to the first embodiment described above. This operation is performed when the rewinding switch 13 is pressed or when all the film loaded is photographed. It is a rewinding processing subroutine that is executed when the processing is completed.

First, when all the loaded films have been photographed, this subroutine is executed from the automatic U-turn entry 201 to turn on the display and illumination of the internal display in the viewfinder (202). Next, the routine proceeds to 205, where the rewinding motor is rotated. Then, the conventional rewinding process is performed at the set rewinding speed (206).

Further, FIG. 4 shows an external display by the external display of the display unit 7 at this time ((a) of FIG. 4) and a display by the internal display in the finder ((b) of FIG. 4). As the rewinding progresses, a plurality of scale-like display segments change to the display position as shown in (a) → (b) → ... (h) → (i) of FIG. The numbers on the frame counter display are also subtracted.

When the signal from the perforation detection circuit 9 is stopped for a predetermined time during the rewinding process, the process ends. Here, stop the motor (207), turn off the display and illumination of the internal display in the viewfinder (208),
Next, the frame counter is checked (209). If it is "0", the rewinding is ended, and the processing advances to 210, and the display of FIG. 6 is displayed on the external display, and the processing is ended. If the frame counter is not "0" in 209, the process proceeds to an error processing routine of 211, and an error display for blinking the display of the number of frames is performed as shown in FIG.

In the case of manual rewinding, the process is started from the manual rewinding entry 203, the finder illumination is turned off, and the process proceeds to (204) 205.

That is, when the film is finished after photographing, the illumination in the viewfinder is turned on, and in the case of manual rewinding, the illumination in the viewfinder is turned off and the rewinding operation is performed.

Even if the rewinding switch 13 is operated during the rewinding process of step 206, it is possible to save more energy by turning off the illumination in the finder.

Further, in the above-mentioned first embodiment, the film rewinding system has been described as the film feeding mechanism, but various types such as a type in which the film can be wound and rewound by one motor. Further, it is also possible to use a film cartridge in which all the films including the leading end of the film are previously stored in the cartridge case.

[0021]

According to the first aspect of the invention, when the film is finished and the automatic rewinding is started after photographing, for example, the illumination in the finder is turned on and the rewinding state displayed on the display is displayed. You can check. Therefore, the photographer can confirm the automatic rewinding state or the manual rewinding state through the viewfinder, and can reliably recognize the rewinding state without relying on the motor sound or the like even in a noise.

According to the second aspect of the invention, when the photographer is aware of the rewinding in advance, such as when manually rewinding the automatic rewinding mode to the manual rewinding mode, the display in the viewfinder is turned off. By doing so, useless battery consumption can be suppressed.

According to the third aspect of the invention, it can be confirmed that the automatic rewinding is being performed while looking through the finder.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric circuit of a first embodiment of a camera according to the present invention.

FIG. 2 is a flowchart showing a film rewinding operation according to the first embodiment.

FIG. 3 is a diagram showing a display pattern of the display unit of FIG. 1 in a fully lit state.

FIG. 4 is a diagram showing a display state of the display unit immediately after the start of rewinding according to the first embodiment.

FIG. 5 is a diagram showing a display state during rewinding according to the first embodiment.

FIG. 6 is a diagram showing a display of a rewinding completion state according to the first embodiment.

FIG. 7 is a diagram showing a display state of rewind failure according to the first embodiment.

[Explanation of symbols]

1 ... Microprocessor 2 ... Photometry circuit 3 ... Distance measurement circuit 4 ... Shutter control circuit 5 ... Lens communication circuit 6 ... Strobe control circuit 7 ... Display section 8 ... DX reading circuit 9 ... Film perforation detection circuit 10 ... Film winding , Feed control circuit for rewinding 11 Photometry start switch 12 Exposure start switch 13 Rewind switch 14 Back cover open / close detection switch 15 Patrone presence / absence detection switch 16 Dial input section due to 2-phase panel generation 17 Power supply circuit 18 ... Battery

Claims (3)

[Claims] 1. A camera having a feed control means for controlling rewinding of the film when the film is finished, a display means provided in a viewfinder, and a display control means for driving and controlling the display means, The control means causes the display means to visually display that the rewinding operation is in progress when the rewinding of the film is started by the feeding control means. 2. The camera according to claim 1, wherein the display control means does not display on the display means when a manual rewind instruction means is operated during rewinding. 3. A feeding control means for controlling the rewinding of the film, a second means for automatically rewinding the film by the feeding control means when the film is finished, and a display means provided in the finder. In a camera having display control means for driving and controlling the display means, when the rewinding of the film is started by the first means, the display control means can visually recognize that the rewinding operation is being performed. A camera characterized by displaying.