JPH11249219A - Display device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm the loaded date of a film in a camera, the latest photographed date of the film and all photographed dates. SOLUTION: This display device for a camera is provided with a means for inputting the latest photographed date and all photographed dates, a means for updating to store the latest photographed date inputted by the input means and storing all photographed dates 10, and a means for displaying the latest photographed date and all photographed dates 9 stored in the storage means 10. The display of the latest photographed date is executed by operating a call key 4. The loaded date of a film charged in the camera, or the photographed date can therefore be positively recognized so as to prevent the film from being left loaded in the camera and forgotten.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera display device capable of displaying, for example, the latest photographing date, all photographing dates, and the like of a film loaded in a camera.

[0002]

2. Description of the Related Art Conventionally, as a display device of this kind of camera,
Japanese Patent Application Laid-Open No. Sho 62-34140 is known. In this conventional apparatus, the film loading date input by the input means is stored in the storage means, and the stored film loading date is displayed on the display means. When a predetermined period has elapsed, the display of the film loading date is switched to a blinking display.

That is, in the conventional camera, if the camera is loaded with the film and left unused for a long time without using the film, the characteristics of the film may be changed and sufficient performance may not be exhibited. Such a problem can be solved by storing the film loading date and displaying that fact.

[0004]

However, just by displaying the film loading date as in the above-described conventional camera,
I don't know when the film was taken. For example, some photographers want to know when they last shot on the film loaded in the camera. Knowing such a latest shooting date will give you an idea of what kind of photography was taking place on the film, and may be a guide to determine if this film is ready for development. This is one of the necessary information.

[0005] Some photographers also desire information such that the photographing history of the film loaded in the camera, that is, all photographing dates of photographed frames can be confirmed. There is known a conventional camera that can take out a photographing history when the camera is connected to a personal computer. However, such a photographing history cannot be confirmed by the camera alone, which may be inconvenient for a photographer. When such a photographing date can be confirmed, the photographed subject can be determined, and this can be used as a material for determination in subsequent processing such as development.

Further, even if the expiration date of the film expires, the user sometimes forgets to load the film with a simple display. For this reason, it is also desired to take measures that can be more clearly confirmed by the photographer.

Further, one of the advantages of the IX240 film, which has recently been widely used, is that it is possible to photograph a single film with a different print format. However, there is no camera using such an IX240 film that can know the history of the number of shots taken for each print format at the time of shooting. Is also desired.

The present invention has been made in view of such circumstances, and it is possible to confirm not only the date of loading a film into a camera, but also the latest shooting date of a film and all shooting dates.
It is another object of the present invention to provide a camera display device capable of giving a clear instruction when the expiration date of the film has expired, and further capable of displaying the history such as the number of shots for each print format on IX240 film.

[0009]

In order to meet such an object, a display device of a camera according to the present invention includes a means for inputting a latest photographing date and updating the latest photographing date input by the input means. It is provided with means for storing and means for displaying the latest photographing date stored in the storage means. The latest shooting date is displayed only when a call key operation is performed.

[0010] The display device of the camera according to the present invention comprises:
Means for inputting all shooting dates, means for storing each shooting date input by the input means, and means for displaying each shooting date stored in the storage means in the order of shooting. . The display of all shooting dates is configured to be switched and displayed in order from the latest shooting date to the oldest shooting date every time the call key operation is performed. At this time,
The display of all shooting dates is displayed together with the number of film frames at the time of rewinding the film, and the rewind speed of the film is reduced when the display of all shooting dates is executed.

Further, according to the present invention, there is provided a display device for a camera, comprising: means for inputting a film loading date; means for storing the film loading date input by the input means; and a film loading date stored in the storage means. Means for automatically rewinding the film when a predetermined period (expiration date of the film) elapses from the date. The photographer can arbitrarily select whether or not the film should be automatically rewound or provided with a temperature detecting means, and the period is automatically set according to the detection result of the temperature detecting means. Or

Further, the display device of the camera according to the present invention comprises:
A camera using IX240 film has at least one of a means for switching between print formats C, H, and P, and a means for designating the number of prints. Or means for adding and storing the number of prints, and means for displaying the addition result stored in the storage means when a predetermined switch is operated.
Then, the addition result stored in the storage means is displayed on each digit of the date on the display means, or the addition result stored in the storage means is changed to "0" by film exchange.
Or to clear.

According to the present invention, since the latest photographing date and all photographing dates of the film loaded in the camera can be displayed, information which is convenient and easy for the photographer to use can be given. Further, according to the present invention, when a predetermined time limit has elapsed from the film loading date, or when a predetermined time limit taking into account the temperature conditions around the camera has elapsed, the film is automatically rewound, thereby enabling the photographer to rewind. Can be clearly notified that it has expired.

Further, according to the present invention, for photographing with different print formats (print sizes), which is an advantage of the IX240 film, a confirmation display of the number of photographed images in each size can be performed by the camera, so that the photographer is easy to use. Good information can be given.

[0015]

FIG. 1 shows one embodiment of a display device of a camera according to the present invention. In the figure, a CPU 11 that controls driving of each part of the camera is provided in a camera body (not shown). The CPU 11 in the camera body has a date setting switch 1 for correcting the time and date, and a date storage for storing a date that is operated when the film is loaded or that is fed up to the first frame after the film is loaded. The means 2 and an erase switch 3 for erasing the information of the film loading date stored in the date storage means 2 are connected.

The CPU 11 has the date storage means 2
And a period setting switch 5 for setting an elapsed time from the film loading date. Further, the CPU 11 is connected to an exposure means 6 for projecting a subject image on the film and a film feeding means 7 for winding and rewinding the film.

The CPU 11 stores temperature detecting means 8 for detecting the temperature around the camera, a display device 9 for displaying the above-mentioned film loading date and the number of frames, and the above-mentioned film loading date data. And a non-volatile memory 10 to be connected.

The CPU 11 has a built-in arithmetic device, storage device, and clock device which are widely known, and measures the current time and date. This timekeeping device stores the current date in the nonvolatile memory 10 as the film loading date when the date setting switch 1 is turned on.

The storage device stores the photographing date in the nonvolatile memory 10 every time the photographing is completed. The arithmetic unit calculates how much date and time has elapsed since the film loading date based on the current date and time measured by the clock device and the film loading date stored in the nonvolatile memory 10. It is determined whether or not the film loading period obtained as a result has passed the period set by the period setting switch 5.

The period setting switch 5 is set to a period slightly shorter than the valid period of the film, for example, one year. Note that the effective periods of all the films are not constant, so that the effective periods may be manually set as needed.

Generally, a film has the property of deteriorating under high temperature conditions. Thus, if the camera is left, for example, in a sunny car, the expiration date is reduced. Here, the validity period may be corrected based on information obtained by the temperature detecting means 8 such as the time and the number of times the camera has been left in a high temperature state.

The camera has a timekeeping function. For this purpose, a crystal oscillator of 32.768 KHz is used. By dividing this frequency, a 1 Hz signal is obtained. This timing operation is performed even when the camera is turned off.

That is, an interrupt is generated by the 1 Hz signal, minute data is obtained 60 times, and hourly as necessary.
Add day, month and year data. For such time measurement processing, the CPU 11 of the camera executes the program execution processing even when the power of the camera is off. Therefore, if the temperature is measured by the temperature detecting means 8 at this time, it is possible to detect the time and the number of times the camera is left in a high temperature state even when the camera is not in use. This value is added to a predetermined area of the nonvolatile memory 10, and the expiration date is shortened by the value.

The operation of the camera having the above-described configuration is as follows. When the film is loaded in the camera body and the date storage means 2 is operated, or when the film is loaded and fed by the empty feed to the first frame, the current date and time measured by the timing device is recorded. It is stored in the nonvolatile memory 10 as the loading date. This nonvolatile memory 1
Film loading date stored in 0 (and the latest shooting date)
Can be displayed on the display device 9 when the call switch 4 is turned on.

When one year has elapsed since the film was loaded, the arithmetic unit of the MCU 11 generates a signal indicating that the validity period has passed, the date of loading the film is displayed in a blinking state, and it is necessary to replace the film with a new one. Is displayed indirectly. Alternatively, if the mode for performing automatic rewinding is selected according to the setting of the photographer, the camera forcibly executes automatic film rewinding.

Further, at the time of film rewinding, the photographing date is displayed in order together with the number of film frames. At this time, if the rewind speed is high, the display is switched at high speed, and it is difficult to confirm. Therefore, in this case, the rewind speed is slowed down or stopped every frame. As a result, it is possible to confirm the date of photographing or make a memo.

FIG. 2 illustrates a display state of the display device 9 in the display device of the camera according to the present invention. The display device 9 is provided with a two-digit year display section, a month display section, and a day display section. In [], a film frame number display section is provided. In FIG. 2, the current date and the frame number of the film to be shot next are displayed.

According to the present invention, each time the call switch is pressed, the previous shooting date and frame number can be displayed one frame at a time. The date data displayed when the frame number is "0" is the film loading date.

FIG. 3 shows another embodiment of the camera display device according to the present invention. In this embodiment,
The type of print size, the number of each print size, and the total number of prints in a camera using the IX240 film are called up.

Advanced Photo System (IX240)
With the IX240 film used in (System), the aspect ratio of a photographic print can be freely selected at the time of shooting. This includes C (conventional type) with an aspect ratio of 2: 3, 9:
There are three types of print formats, 16 H (wide type) and 1: 3 P (panorama type). further,
With the IX240 film, the number of prints can be specified at the time of shooting.

In a camera using such an IX240 film, a nonvolatile memory is used for each photographing in order to display the number of each of the currently photographed films C, H and P and the total number of prints. 10, C, H,
P and the number of print data are added, and when the call switch is pressed, a display as shown in FIG. 3 is performed.

In this display, characters "C", "H" and "P" are displayed above the respective digits on the display section of the date data on the display device 9, and furthermore, the number of frames is displayed. Display the total number of prints. This gives C,
It is possible to confirm how many pictures are taken in H and P, and how many prints each are. Note that when displaying the above-mentioned shooting date, the shooting frame is C, H, P
Display device 9 so that the user can check
It is more convenient to display any one of C, H, and P in.

The present invention is not limited to the structure described in the above embodiment, and it goes without saying that the shape, structure, etc. of each part can be appropriately modified or changed. For example, in the above-described embodiment, the latest shooting date or all shooting dates on the film is stored, and an appropriate display is displayed on the display device by operating the call key. The configuration is not limited, and any configuration may be used as long as it can store and display only the latest shooting date or all shooting dates.

Further, in the above-described embodiment, the nonvolatile memory 10 is used as the storage means for storing the latest shooting date and all the shooting dates. However, the present invention is not limited to this. May be.

Further, the loading date, latest shooting date, all shooting dates,
Alternatively, information such as the number of shots and the number of prints for each print size may be cleared to "0" by exchanging films.

[0036]

As described above, according to the camera display device of the present invention, the latest shooting date or all shooting dates for the film loaded in the camera is stored and displayed as required. With such a configuration, it is possible to obtain information that is convenient and convenient for the photographer. Therefore, it is possible to reliably recognize when the film loaded in the camera is loaded or when the film is shot. And there is no chance of forgetting the film loaded in the camera.

Further, according to the present invention, when a predetermined period has passed since the film loading date or when a predetermined period in consideration of the temperature conditions around the camera has passed, the film is automatically rewound. , The photographer can be notified that the film has expired. Therefore, it is possible to give useful information to the photographer without forgetting the film loaded in the camera.

Further, according to the present invention, for photographing with different print formats (print sizes), which is an advantage of the IX240 film, the number of prints at each print size can be confirmed by the camera alone. This can provide user-friendly information.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating one embodiment of a camera display device according to the present invention and illustrating a control system of the camera.

FIG. 2 is a diagram illustrating a display state of the display device of the camera shown in FIG. 1;

FIG. 3 is a view showing another embodiment of the display device of the camera according to the present invention, showing a display state on the display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Date setting switch, 2 ... Date storage means, 3 ... Erase switch, 4 ... Call switch, 5 ... Period setting switch,
6 exposure means, 7 film feeding means, 8 temperature detection means, 9 display device, 10 nonvolatile memory (storage means), 11 CPU.

Claims (12)

[Claims] 1. A means for inputting a latest shooting date, a means for updating and storing the latest shooting date input by the input means, and a means for displaying the latest shooting date stored in the storage means. A display device for a camera. 2. The camera display device according to claim 1, wherein the display of the latest shooting date is performed only when a call key operation is performed. 3. A means for inputting all shooting dates, a means for storing all shooting dates input by the input means, and a means for displaying each shooting date stored in the storage means in the order of shooting. A camera display device. 4. The display device for a camera according to claim 3, wherein the display of all the shooting dates is switched and displayed in order from the latest shooting date to the oldest shooting date every time a call key operation is performed. Camera display device. 5. The display device for a camera according to claim 3, wherein the display of the all shooting dates is displayed together with the number of film frames when the film is rewound. 6. The display device for a camera according to claim 5, wherein when displaying all the shooting dates, the rewind speed of the film is reduced. 7. A means for inputting a film loading date, a means for storing a film loading date input by the input means, and a film when a preset period has elapsed from the film loading date stored in the storage means. And a means for automatically rewinding the camera. 8. The camera display device according to claim 7, wherein a photographer can arbitrarily select whether or not to automatically rewind the film. 9. The camera display device according to claim 8, further comprising a temperature detection unit, wherein the period is automatically set according to a detection result of the temperature detection unit. 10. A camera using an IX240 film, comprising at least one of means for switching between print formats C, H, and P, and means for designating the number of prints. P means for adding and storing the number of prints and the number of prints respectively, and means for displaying the addition result stored in the storage means when a predetermined switch is operated. Camera display device. 11. The camera display device according to claim 10, wherein the addition result stored in said storage means is displayed on each digit of the date on the display means. 12. The camera display device according to claim 10, wherein the addition result stored in said storage means is cleared to “0” by film exchange.