JPH0843935A - Number of frames displaying apparatus of camera - Google Patents

Abstract

PURPOSE:To provide a number of frames displaying apparatus of a camera which enables the user to recognize the image plane size accurately. CONSTITUTION:A number of frames displaying apparatus of a camera is characteristically provided with a screen size switching means to switch the image plane size on a film plane, a means (a N-switch 4a, a P- -switch 4b, a H-switch 4c, a microcomputer 1, and a memory element 3) computing the number of photographed frames by image plane sizes, and a display circuit 2 to display the number of photographed frames by image plane sizes found by the means finding the number of photographed frames.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame number display device for a camera, and more particularly to a frame number display device for a camera capable of shooting while switching screen sizes.

[0002]

2. Description of the Related Art In recent years, many cameras have been proposed which are capable of taking pictures by switching the size of a photographing screen.
In addition to conventional standard sizes, these cameras capable of switching the shooting screen size enable shooting by switching the shooting screen to a so-called high-definition size with a so-called panoramic size or an aspect ratio of 16: 9. It is what Further, some cameras of this type are provided with a so-called midway switch mechanism that allows a photographer to switch to a desired size without taking out the film after loading the film into the camera body. Is also proposed.

By the way, a film having a mixture of screen sizes photographed by such a halfway switching mechanism has the following problems in printing in a current laboratory.

That is, unless the screen size photographed on the film patrone is clearly displayed, a laboratory worker looks at the developed film and photographs in standard size or in panorama size, Alternatively, it is necessary to judge whether the both of them are mixed, which results in poor workability and lack of certainty.

In consideration of these problems, various measures have been taken, such as having the user of the camera attach a sticker or the like indicating the screen size to the film cartridge. However, in this case, the user needs to memorize whether or not the screen size has been switched, and the above problems have not been reliably solved.

As means for solving the above-mentioned problems, Japanese Patent Application Laid-Open No. 61-53625 has a first counter for setting the number of films and a second counter for setting the film sensitivity, which is usually the above-mentioned first counter. There is disclosed a technical means (first conventional example) in which the contents of the first counter are displayed and the contents of the second counter are displayed according to the release button.

There is also known a technical means (second conventional example) in which a storage means for storing the number of film frames at the time when the screen size is changed during shooting is provided and correction display is performed when the film is rewound. .

Further, there has been proposed a technical means (third prior art example) for writing midway switching information or the like on the film itself by applying a magnetic recording material or the like to the photographed film.

[0009]

However, in the above-mentioned first and second conventional examples, consideration is given to displaying to the user that the screen size has been switched after loading the film cartridge. not,
It was very inconvenient for a screen size switching camera.

Also, in the case of the third conventional example, there is a problem that the user cannot recognize how many pictures were taken at which screen size during the shooting.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a frame number display device for a camera, which allows a user to accurately recognize the screen size.

[0012]

To achieve the above object, the first camera frame number display device according to the present invention comprises a screen size switching means for switching the screen size on the film surface, and a screen size switching device for each screen size. It is provided with means for obtaining the number of photographed frames and display means for displaying the number of photographed frames for each screen size obtained by the means for obtaining the number of photographed frames.

In order to achieve the above object, the second camera frame number display device according to the present invention is the same as the first camera frame number display device, wherein the means for determining the number of photographed frames is a screen size unit. It is characterized by comprising a plurality of frame counters for counting the number of frames taken.

In order to achieve the above object, a frame number display device for a third camera according to the present invention is the frame number display device for the first camera, wherein the means for obtaining the frame number for photographing is a frame for each frame. It is characterized in that the screen size is stored and the number of shooting frames is calculated based on this storage.

[0015]

According to the first camera frame number display device of the present invention,
The screen size switching means switches the screen size on the film surface, and the means for determining the number of shooting frames determines the number of shooting frames for each screen size. Further, the number of shooting frames for each screen size obtained by the above-described number of shooting frames is displayed on the display means.

In the frame number display device of the second camera according to the present invention, in the frame number display device of the first camera, the means for obtaining the number of photographed frames is a plurality of frame number counters for each screen size. Count the number.

In the frame number display device for a third camera according to the present invention, in the frame number display device for the first camera, the means for determining the number of photographed frames stores a screen size for each photographed frame, and this memory is stored. The number of frames to be photographed is calculated based on.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an electric block circuit diagram showing the configuration of the main part of a frame number display device for a camera which is a first embodiment of the present invention.

The frame number display device of this camera is a microcomputer 1 for controlling the operation of the entire camera including the device.
The microcomputer 1 includes a CPU 8, a timer 9, a display data RAM 10 and the like. A display circuit 2 for displaying the number of frames and the like is connected to the output terminal P1 of the microcomputer 1,
A predetermined number of frames and the like are displayed based on the data from the display data RAM 10. Further, the input terminal P2 of the microcomputer 1 is connected to a storage element 3 composed of an EEPROM or the like. The storage element 3 may be composed of a RAM inside the CPU 8.

The storage element 3 includes a normal photographing number counter (N counter), a panoramic photographing number counter (P counter), and a high-definition photographing number counter (H).
Counter), a counter for total number of shots (T counter), a current viewfinder state and a shooting size, and a screen size state.

Input terminal P of the microcomputer 1
A normal shooting number display switch (N switch) 4a, a panoramic shooting number display switch (P switch) 4b, and a high-definition shooting number display switch (H switch) 4c are connected to 3, P4, and P5, respectively. And
When a button corresponding to each of the switches 4a, 4b and 4c is pressed to turn on the switch, this ON signal is input to the CPU 8 via the timer 9.

In the CPU 8, the switches 4a, 4
Data is read from the counter of the storage element 3 corresponding to the ON signal from b and 4c, and the data is sent to the display circuit 2 via the display data RAM 10. Then, the display circuit 2 is adapted to perform a predetermined display based on the data. That is, the N switch 4a, the P switch 4b, and the H switch 4c serve as a display changeover switch.

A release switch 5 is connected to the input terminal P6 of the microcomputer 1, and when a button corresponding to the release switch 5 is pressed, the microcomputer 1 executes a series of release sequences. And sends an instruction to a predetermined circuit to expose the film. Then, depending on the screen size state, the three counters corresponding to each screen size are incremented, and at the same time, the T counter in the storage element 3 is incremented.

Further, the screen size changeover switch 6 is connected to the input terminal P7 of the microcomputer 1 so that an ON / OFF signal of the screen size changeover switch 6 is inputted to the CPU 8. The CPU8
When the button corresponding to the screen size changeover switch 6 is pressed and the switch is turned on, the screen size state is
For example, rewrite in the order of normal → panorama → high definition → normal.

A rear cover switch 7 is connected to the input terminal P8 of the microcomputer 1, and CP
An ON / OFF signal of the rear cover switch 7 is input to U8. When the rear cover switch 7 changes from on to off, the CPU 8 sends an instruction to a predetermined circuit to perform a film idling operation, assuming that the film has been loaded.

Further, each counter of the storage element 3 is
It is to be cleared when the blank feeding is started.
Normally, the contents of the T counter are displayed on the display circuit 2, and when any one of the switches 4a, 4b, 4c is turned on, the CPU 8 causes the respective switches 4a, 4b, 4c to be turned on. The value of the storage element 3 corresponding to is set in the display data RAM 10 and displayed on the display circuit 2. At this time, the timer 9 controls the switches 4a and 4
The display circuit 2 is started by the ON operation of any of b and 4c, and displays the above-mentioned display for a predetermined time set in the timer 9.

FIG. 2 is a block diagram showing the configuration of the main part of a camera to which the frame number display device of this embodiment is applied.

In the figure, reference numeral 1 is the above-described microcomputer that performs sequence control of the entire camera and various calculations. Various circuits described later are connected to the microcomputer 1, and the various circuits are controlled by the microcomputer 1. The various circuits will be described below.

Under the control of the microcomputer 1, the strobe circuit 12 is a circuit for charging a strobe light emitting capacitor and controlling light emission. The display circuit 2 is composed of, for example, an LCD and displays the operation mode, the number of frames, the battery state, the date, etc. based on the data from the microcomputer 1.

Further, the operation switch 14 includes the release switch 5 and the normal photographing number display switch (N
Switch) 4a, the panoramic shot number display switch (P switch) 4b, the high-definition shot number display switch (H switch) 4c, the screen size changeover switch 6 and the like. It is adapted to be input to the microcomputer 1.

The film sensitivity reading circuit 15 reads the DX code of the loaded film and outputs the sensitivity information to the microcomputer 1. Further, the photometric circuit 17 determines the brightness of the subject. It is a circuit for detecting, and the detection result is sent to the microcomputer 1. Also, the film control unit 1
Under the control of the microcomputer 1, the control unit 8 controls automatic film winding, automatic film rewinding, and idling.

Further, an AF (autofocus) circuit 1
Reference numeral 9 is a circuit for measuring the distance to the subject, and the measurement result is sent to the microcomputer 1. A shutter control circuit 20 is a shutter control circuit indicated by reference numeral 20a in the figure, and the microcomputer 1 includes the photometric circuit 17 and the film sensitivity reading circuit 1.
The shutter speed is calculated on the basis of the output from 5, and the shutter control circuit 20 controls the exposure.

The AF motor control circuit 22 is a control circuit for the AF (autofocus) motor 21, and the microcomputer 1 drives the AF motor control circuit 22 based on the value from the AF circuit 19 to bring it into focus. It is supposed to make adjustments.

The recording circuit 23 is a circuit for magnetically recording on a film coated with a magnetic material or the like when the film is used. For example, information on a film format (such as panorama or high definition) taken for each frame is recorded under the control of the microcomputer 1. A detailed description of the configuration of the magnetic head or the like driven by the recording circuit 23 will be omitted.

The memory circuit 25 corresponds to the memory element 3 and is a memory circuit composed of a non-volatile memory or the like for storing the number of frames and various adjustment values of the camera. The date imprinting circuit 24 is a circuit for imprinting the date and the like on the film, and is controlled by the microcomputer 1 and a date CPU (DT-CPU) not shown.

FIGS. 3A and 3B are (a) a top view and (b) a front view of a camera to which the frame number display device of the first embodiment is applied.

This camera has a normal photographing function, and in the figure, reference numeral 31 is a camera body to which the frame number display device of the camera of this embodiment is applied. In addition, on the front surface of the camera body 31, a normal taking lens 32 and a photometric window 3 are provided.
3, viewfinder 34, distance measuring windows 35, 36, strobe 3
7 are provided. An LCD display section 38 corresponding to the display circuit 2 is provided at the center of the upper surface of the camera body 31.
Further, release buttons 39 connected to the release switch 5 are provided on one side, respectively.

On the upper surface of the camera body 31,
The N switch 4 is provided on the side of the LCD display unit 38.
a, P switch 4b, H switch 4c, N switch button 40, P switch button 42,
The H switch buttons 41 are arranged in a row.

The N switch 4a is a switch for displaying the number of shooting frames on a normal size shooting screen, and when the N switch button 40 is pressed, the LCD display section 38 displays normal size shooting frames. The number is displayed.

The P switch 4b is a switch for displaying the number of frames to be photographed on a panoramic size photographing screen, and by pressing the P switch button 42, the LCD display section 38 is allowed to photograph frames in the panoramic size. The number is displayed.

The H switch 4c is a switch for displaying the number of frames to be photographed on a so-called high-definition-size photographing screen, and by pressing the H switch button 41, the LCD display section 38 is photographed in the high-definition size. The number of pieces is displayed.

Further, on the other side of the upper surface of the camera body 31, a screen size switching button 43 for high-definition, panorama, and normal size, which is connected to the screen size switching switch 6, is provided.

Now, the LCD used in the LCD display section 38 will be described with reference to FIG.

FIG. 4 is an exploded perspective view of essential parts for explaining the display principle of the LCD. In the figure, reference numeral 51 indicates light, reference numeral 52 indicates a deflecting plate (polarizing filter), reference numeral 53 indicates a liquid crystal layer (alignment film), and reference numeral 54 indicates a driving voltage source.

The LCD used in this embodiment is T
It is an N (twisted nematic) type LCD, and as shown on the left side of FIG. 4, when a nematic liquid crystal is sandwiched between two linear polarizing plates (deflection filters) 52 whose polarization directions are orthogonal (crossed by 90 degrees), The liquid crystal is twisted and arranged by 90 degrees (twist alignment). The light 51 incident from above is twisted along the arrangement of liquid crystal molecules in the liquid crystal layer 53 having optical anisotropy (optical property), and is transmitted through the lower polarizing plate 52 (light passes).

On the other hand, as shown in the right side of FIG. 4, when a voltage of sufficient strength is applied to the liquid crystal layer 53 from the driving voltage source 54, a liquid crystal molecule alignment different from the initial alignment state (twist alignment) is taken. It will be in an optically different state. As a result, the optical activity of the light 51 is lost and the light is cut by the lower polarizing plate 52. The electric field controls the transmission of incident light to generate contrast.

As shown in FIG. 4, a display that allows transmission when the voltage is off and cuts off when the voltage is on is called positive display. If the upper and lower polarizing plates 52 are respectively rotated by 90 degrees and arranged, a negative display is obtained in which the voltage is cut off when the voltage is off and the light is transmitted when the voltage is on. Positive display is generally used for cameras and the like.

FIG. 5 is an electric block circuit diagram showing the configuration of the drive circuit of the LCD display section 38. Below, the L
The CD drive circuit will be described along the flow of signals.

First, the drive voltage VLCD of the LCD display section 38.
Is divided into a predetermined voltage by the voltage dividing resistors 68 to 70, and a plurality of analog switches 71 are connected to the output terminal thereof. Then, when the time-divided signal is input to the analog switch 71 by the timing controller 64 that operates by the signal from the oscillation circuit 65, the analog switch 71 divides the voltage by the voltage dividing resistors 68 to 70.
A predetermined LCD drive voltage VLCD is selected, and the selected voltage is supplied to the common driver 62 and the segment driver 63 independently. At the same time, a signal is directly input from the timing controller 64 to the common driver 62 and the segment driver 63.

When the signal from the timing controller 64 is input to the common driver 62 and the segment driver 63, the common driver 62 and the segment driver 63 output L based on the value of the display data 66.
A common (COM) signal and a segment (SEG) signal are sent to the CD display unit 38, respectively. In the present embodiment, the LCD drive circuit described above is
It is built in PU8.

FIG. 6 is a front view showing an example of display of the number of frames on the LCD display section 38. FIG. 6A shows a segment signal line (SEG), and FIG. 6B shows a common signal line (COM). It is an example of wiring.

As shown in the figure, each pixel has a common signal line (COMφ to COM3) and a segment signal line (Sφ to S).
3) and are crossed and wired. Further, (a) is a segment signal line (SEG), and (b) is a common signal line (C
OM) wiring example is shown.

The LCD display section 38 outputs signals (COM signals, COM signals, etc.) from the common driver 62 and the segment driver 63 (see FIG. 5) corresponding to the pixels to be turned on.
SEG signal) is appropriately selected and a desired number or the like is displayed.

Table 1 is a table showing examples of output signals for the segment signal line and the common signal line. That is, an example of output signals from the common driver 62 and the segment driver 63 is shown. As shown in Table 1, for example, the data of 0 and 1 are displayed on the LCD display unit 38.
If it is transmitted as display data, the display will be "13" as shown in FIG. In this embodiment, when "1" in Table 1, the corresponding pixel is turned on. Further, in this embodiment, the number of common signal lines is four as described above. This example is called 4-time-division driving, which is a driving method that is generally used.

[0056]

[Table 1] Next, the above C in the frame number display device of the camera of the present embodiment.
The operation of the PU will be described with reference to the flowchart shown in FIG.

First, in step S100, an initialization operation is performed after the CPU is reset by turning on the power. Then, in step S101, the timer is set. In addition,
The timer is a display timer and is initialized every time the photographer operates a switch of the camera. Then, if the switch is not operated for a predetermined time (for example, 30 seconds) and the timer counter overflows, C
The PU is set to standby mode to reduce power consumption. Further, when the LCD is not the normal display, the display is returned to the normal display when the switch is not operated for a predetermined time (for example, 20 seconds).

Next, in step S102, it is determined whether the display timer has overflowed. If the display timer expires and the display timer expires in this step, the process proceeds to step S106. This step S
At 106, communication in communication mode A is performed. Then, here, the CPU state data indicates that the CPU enters the standby mode. After that, in step S107, all the displays are turned off to notify the photographer of the standby mode, and the process returns to the standby state in step S108.

If the display timer does not expire due to overflow in step S102, step S10
Move to 3. In this step S103, communication in communication mode A is performed, and the data necessary for displaying the date is input from a DT-CPU (not shown). Then, step S1
At 04, the display circuit 2 (L
It is displayed on the CD display section 38). Further, a display corresponding to the operation mode of the camera is also displayed on the LCD display unit 38.

The above steps S103 to S10
By the operation of 4, the display of the LCD display unit 38 is updated corresponding to the operation of the CPU and the operation of the DT-CPU.

In the next step S105, if the rear cover of the camera is opened to close in response to a signal from the rear cover switch 7 (denoted by BKSW in the figure), the process proceeds to step S115 to execute the idling. After this step 115 ends, step S11
6, the T, N, P, H counters of the storage element 3 are cleared and the photographing information is initialized, and step S101
Return to.

In step S105, if the rear lid of the camera is not open → closed due to the signal from the rear lid switch 7, the process proceeds to step S109. This step S
After 109, the state of the setting switch is input, and the camera operates according to the operating state of the switch.

First, in step S109, it is determined whether or not the 1st release switch (1R switch) is pressed. If the 1st release switch (1R switch) is pressed (ON), the process proceeds to step S117 to perform a release process (photographing operation). This calls and executes the release processing program shown in FIG. 8 as a subroutine. Then, in step S117, after completion of the series of photographing operations, the process returns to step S101.

In step S109, the 1R
When the switch is off, the process goes to step S112 to check the rewinding. If rewinding here, step S12
In step S101, the film rewinding operation is performed.
Return to.

If the rewinding is not performed in step S112, the process proceeds to step S113, and the display changeover switch (SW) is checked. The display changeover switch means the N switch 4a, the P switch 4b, and the H switch 4c. If any of these switches is turned on, the process proceeds to step S121 to perform the frame number changeover process. In step S121, the frame number display switching processing program (details will be described later) shown in FIG. 8 is executed. After that, when the frame number display switching process ends in step S121, the process returns to step S101.

If the display changeover switch is off in step S113, the flow advances to step S114 to check the screen size changeover switch 6. If the screen size switch 6 is turned on, the process proceeds to step S122 to perform the screen size switching operation. Step S1
In step 22, the finder is switched (details will be described later) as shown in FIGS.
Return to 01.

In step S114, if the screen size changeover switch 6 is off, step S102.
Return to.

When the rewinding of the film is completed, the T counter of the storage element 3 becomes zero, and at this time, the frame counter in the LCD display section 38 blinks "E". However,
In this case, the N switch 4a and the P switch 4 are
When either the b or H switch 4c is turned on, the contents of the respective counters are displayed, and "E" blinks after a lapse of a predetermined time.

In the demo mode in which no camera is loaded in the camera, the T counter, N counter, P counter, and H counter are all zero, and the LCD
The display of the display unit 38 also flashes "E" when the T counter is displayed, and becomes zero in other displays.

FIG. 8 is a flow chart showing a release processing algorithm by operating the 1st release switch (1RSW) and the 2nd release switch (2RSW) in this embodiment.

When the 1RSW is turned on in step S117 (see FIG. 7), the CPU starts the calling process as a subroutine of the program shown in FIG. 8 as the 1R process.

First, in step S200, the outputs of a photometric light-receiving element (not shown) and an autofocus sensor (not shown) are fetched to measure the brightness of the subject (photometry) and the distance to the subject (distance measurement). Next, step S202.
Then, based on the result of the distance measurement in step S200, the autofocus lens extension amount for the later-described autofocus lens extension (focusing) is obtained.

Next, in step S203, the 1RS
When W is confirmed, if the switch is turned off at this point, the process returns at step S204 and ends the process. Also, the above 1
If RSW is on, the process proceeds to step S205, 2RSW
If is off, the process returns to step S203.

When it is confirmed that the 2RSW is turned on in step S205, the extension control is performed in step S206 based on the extension amount of the autofocus lens obtained in step S202. After the autofocus lens is extended, in step S207, the aperture control of the shutter is performed based on the result of the AE calculation obtained in step S201. After completion of the exposure control in step S207, a lens reset operation is performed to return the autofocus lens extended in step S208 to the original position.

Next, in step S209, the data (panorama, high-definition, normal and date, etc.) taken at step S207 is stored in a storage element such as EEP (details will be described later), and the process proceeds to step S210.

In step S210, the film is wound up by one frame. Further, during this winding operation, the exposure value of the photographing information, the screen size, etc. are recorded in the magnetic recording portion of the film. After step S210, the release process ends in step S211, and one frame of the photograph is taken. At this time, the LCD of the LCD display unit 38
Return the display to normal (display the number of shots).

The N switch 4a and the P switch 4 are
If any of the b and H switches 4c is turned on and the size corresponding to the LCD display unit 38 is displayed, and the release button is pressed,
The above display returns to the display of the total number of shots.

FIG. 9 is a flow chart showing a frame number display switching process in the frame number display device of the camera of this embodiment.

In step S113 (see FIG. 7), when any one of the N switch 4a, P switch 4b, and H switch 4c is turned on, the program is executed. ing.

First, in step S300, the panorama shot number display switch (P switch, PS in the figure) is displayed.
When W) 4b is on, the process proceeds to step S303. In step S303, for example, the number of panoramic images and the "P" mark are displayed on the LCD display unit 38, and the display timer is set in step S306.
The process proceeds to step S307 and returns to end the process.

In step S300, if the P switch 4b is off, the process proceeds to step S301.
After that, when the high-definition shooting number display switch (H switch, referred to as HSW in the drawing) 4c is turned on, the process proceeds to step S304. In step S304, for example, the number of high-definition shots and the "H" mark are displayed on the LCD display unit 38, the display timer is set in step S306, the process proceeds to step S307, and the process ends with return.

In step S301, when the H switch 4c is off, the process proceeds to step S302.
After that, when the normal photographing number display switch (N switch, referred to as NSW in the drawing) 4a is turned on, the process proceeds to step S305. In step S305, for example, the normal image number and the "N" mark are displayed on the LCD display unit 38, the display timer is set in step S306, the process proceeds to step S307, and the process is ended by returning.

When the N switch 4a is off in step S302, the process proceeds to step S307 and returns to end the process.

On the LCD display section 38, normally, the P, H, and N marks are not lit, and the total number of shots is displayed.

FIG. 10 shows the LC in the first embodiment.
9 is a front view showing a display example of a D display unit 38. FIG.

FIG. 10A shows the fully lit state of the LCD display section 38. In addition, FIG.
This shows what is displayed when the P switch 4b is turned on. In this case, three frames are displayed.
Further, FIG. 10 (c) shows the contents of the lighting display when the H switch 4c is turned on, and in this case, four pieces of frames are displayed. FIG. 10 (d) shows the contents of lighting display when the N switch 4a is turned on, and in this case, 12 pieces of frames are displayed. Figure 10
(E) shows the content of the lighted display in the normal state where none of the N switch 4a, P switch 4b, and H switch 4c is turned on. In this case, the total number of shots is displayed.

FIG. 11 is a flow chart showing the process of storing the photographing state in the frame number display device of the camera of this embodiment.

First, in step S500, if the screen size is the panoramic size, the process proceeds to step S504, the P counter (the number of panoramic shots) in the storage element 3 is incremented, and then the process proceeds to step S506.

In step S500, if the screen size is not the panorama size, the process proceeds to step S501. In step S501, when the screen size is the high-definition size, the process proceeds to step S505, and the storage element 3
After incrementing the H counter (the number of high-definition shots) in, the process proceeds to step S506.

In step S501, if the screen size is not the high definition size, step S502.
Go to. In step S502, when the screen size is the normal size, the process proceeds to step S503, the N counter (normal number of shots) in the storage element 3 is incremented, and then the process proceeds to step S506.

If the screen size is not normal in step S502, the flow advances to step S507 to end the processing.

In step S506, the T counter (total number of shots) in the storage element 3 is incremented, and then the process proceeds to step S507 to end the process.

As the T counter, a value obtained by adding the contents of the N, P and H counters may be used.

FIG. 12 is a front view showing a viewfinder display section of a camera to which the frame number display device of this embodiment is applied.
(A) shows a viewfinder display example when a high-definition size, (b) a normal size, and (c) a panorama size are set.

In this embodiment, each time the screen size change button 43 (see FIG. 3) corresponding to the screen size change switch 6 is pressed in the finder display section,
Mask means (not shown) provided in the camera body is switched sequentially.

In addition to the mechanism for mechanically switching the mask means in conjunction with the screen size switching button 43,
A liquid crystal finder may be used to form the mask and be electrically switched.

As described above, according to the first embodiment, since the number of shots for each screen size can be stored and displayed in addition to the total number of shots, it is possible to prevent forgetting to switch the screen size. You can check the current film usage status and select a more appropriate screen size.

Next, a second embodiment of the present invention will be described.

FIG. 13 is a top view of a camera to which the frame number display device of the second embodiment is applied.

The frame number display device for a camera of the second embodiment is the N switch buttons 40, P in the first embodiment.
The switch button 42 and the H switch button 41 (see FIG. 3) are commonly used as one switch button 81. Then, each time the switch button 81 is pressed, the number of frames to be photographed in a predetermined screen size is switched and displayed on the LCD display section 38.

For example, in the first pressing operation, the number of frames taken in the normal size is displayed. When the button is pressed again in this state, the number of frames taken in the panoramic size is displayed. It is supposed to be displayed. When the switch button 81 is not pressed for a predetermined time, the display on the LCD display section 38 is returned to the initial state.

The other structure and operation are the same as those of the first embodiment, and the description thereof is omitted here.

As a modified example of the second embodiment, the switch button 81 is also omitted and the LCD display section 38 is operated in conjunction with the operation of the screen changeover switch button 43.
It is also possible to display the number of frames taken in each screen size.

According to the frame number display device of the camera of the second embodiment, in addition to the effect of the first embodiment, the number of changeover switches for displaying the number of shots for each screen size can be reduced, so that the cost can be further reduced. can do.

Next, a third embodiment of the present invention will be described.

FIG. 14 is a front view showing a display example of the LCD display section in the frame number display device of the camera of the third embodiment.

The frame number display device for a camera of the third embodiment has the same basic construction as that of the first embodiment,
Since only the display contents of the LCD display part are different, only the difference will be described here, and other configurations and operations will be described.
Since it is the same as the first embodiment, the description thereof is omitted here.

In the frame number display device of the camera of the third embodiment, the LCD display section can display the number of frames to be photographed for each screen size and the photographing date and time of each frame.

FIG. 14A shows the LCD in this embodiment.
It shows a state in which the display unit is fully lit.

FIG. 13B shows a display example in the normal state. In this example, the 13th frame is photographed in the normal size, and the photographing date and time is August 10, 1994. ing.

Further, FIG. 11C shows that the number of frames taken in the panorama size is three.

Further, FIG. 9D shows that the number of frames to be photographed in the high-definition size is eight.

Further, (e) of the figure shows that the number of photographing frames in the normal size is one.

The display switching of the number of frames to be photographed may be performed by the switch button shown in the first embodiment, and further, can be performed by the switch button shown in the second embodiment. Needless to say.

Also in the third embodiment, the same effect as that of the first embodiment can be obtained.

Next, a fourth embodiment of the present invention will be described.

FIG. 15 is a front view showing a display example of the LCD display section in the frame number display device of the camera of the fourth embodiment.

The frame number display device for a camera of the fourth embodiment has the same basic construction as that of the first embodiment,
Since only the display contents of the LCD display part are different, only the difference will be described here, and other configurations and operations will be described.
Since it is the same as the first embodiment, the description thereof is omitted here.

FIG. 15A shows the LCD in this embodiment.
It shows a state in which the display unit is fully lit.

In this embodiment, the N switch 4 is used.
When any one of a, P switch 4b, and H switch 4c is turned on, the content of the number of frames corresponding to the screen size is displayed.

For example, FIG. 11B shows that the number of frames to be photographed is 3 in the high-definition size.

Also in the fourth embodiment, the same effect as that of the first embodiment can be obtained.

Next, a fifth embodiment of the present invention will be described.

FIG. 16 is an electric block circuit diagram showing the construction of the main part of the frame number display device of the camera of the fifth embodiment. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The frame number display device for a camera of the fourth embodiment has the same basic structure as that of the first embodiment.
Since only the display contents of the LCD display part are different, only the difference will be described here, and other configurations and operations will be described.
Since it is the same as the first embodiment, the description thereof is omitted here.

In comparison with the first embodiment, the camera frame number display device of the fifth embodiment is different from the first embodiment in that the N, P, and H counters in the storage element 3 are replaced by the previously photographed frames. A storage element 83 for storing which screen size the image was captured is provided.

The memory element 83 is a memory element composed of an EEPROM or the like, and may be composed of a RAM inside the CPU 8. The T counter in the storage element 83 is a counter for the total number of shots. "Current screen size status"
The current viewfinder state and shooting size are stored in the area of.

In the "first frame screen size state" area, the finder state and the shooting size at the time of shooting the first frame are stored. Further, in the "second frame screen size state" area, the viewfinder state and the shooting size at the time of shooting the second frame are stored.

Hereinafter, in the "n-1th frame screen size state" area, the viewfinder state and shooting size at the time of n-1th frame shooting are stored, and in the "nth frame screen size state" area, The viewfinder state and shooting size at the time of shooting the nth frame are stored.

Further, in the present embodiment, the timer 9 has the UP switch 84 instead of the N switch 4a, P switch 4b and H switch 4c in the first embodiment.
a, DOWN switch 84b is provided.

FIG. 19 is a top view of a camera to which the frame number display device of the fifth embodiment is applied.

As shown in this figure, the UP switch 84a and the DOWN switch 84b are provided on the upper surface of the camera body.
The UP switch button 91 and the DOWN switch button 90 corresponding to are provided.

In this embodiment, when the UP switch button 91 is pressed and the UP switch 84a is turned on, the predetermined data of the frame which is +1 to the frame displayed on the LCD display section 38 is read. , Is displayed on the LCD display section 38. In addition, the DOWN
When the switch button 90 is pressed and the DOWN switch 84b is turned on, the predetermined data of the first frame minus the frame displayed on the LCD display unit 38 is read,
It is adapted to be displayed on the LCD display section 38.

When the release switch 5 is turned on,
A series of release sequences are executed to expose the film. At this time, the CPU 8 writes the current screen size state in the corresponding expression of the storage element 83 depending on the number of exposed frames. Further, when the rear cover switch 7 is turned off, the film is loaded in the camera, and a blank feed is performed. Each counter of the storage element 83 is cleared when the blank feed is started.

Next, the operation of the frame number display switching process in the frame number display device of the camera of the fifth embodiment will be described with reference to the flow chart shown in FIG.

In step S600, it is determined whether or not the UP switch (SW) 84a is turned on, and if it is turned on, in step S605, the frame displayed on the LCD display unit 38 is incremented by 1 and X is added. Store in register. Thereafter, in step S606, it is determined whether or not the number of new frames is greater than the number of shots. If the number of new frames is less than the number of shots, the process directly proceeds to step S608. "1" is stored in the X register and the process proceeds to step S608.

When the UP switch (SW) 84a is off in step S600, it is determined in step S601 whether the DOWN switch 84b is turned on,
If it is off, the process proceeds to step S611 and returns. When it is on, in step S602, the frame number displayed on the LCD display unit 38 is -1.
And store it in the X register. After this, step S603
In, it is determined whether or not the new piece is 0 or less,
If the new frame is "1" or more, step S608.
If it is zero or less, the "number of shots" is stored in the X register in step S604, and the process proceeds to step S608.

In step S608, the storage element 83 is stored.
The image data of the frame stored in the X register is read from, and the data is read in step S609.
To be displayed. After that, the timer is set in step S610, and the process returns in step S611.

FIG. 18 shows the LC according to the fifth embodiment.
9 is a front view showing a display example of a D display unit 38. FIG.

FIG. 14A shows the fully lit state of the LCD display section in this embodiment. Further, FIG.
The normal display state is shown, and the total number of shots and the current screen size (normal size in this case) are displayed.

Further, FIG. 14C shows a display example when the DOWN switch button 90 is pressed twice, and in this case, the 18th frame is photographed in a panoramic size. Further, FIG. 3D is a display example when the DOWN switch button 90 is pressed 10 times, and
It indicates that the 0th frame was shot in high definition size.

In the fifth embodiment as well, the DO
WN switch button 90 or UP switch button 9
When 1 has not been pressed for a predetermined time, the display on the LCD display unit 38 returns to the initial state.

Also in the fifth embodiment, since the number of shots for each size is stored and displayed in addition to the total number of shots, it is possible to prevent forgetting to switch the shooting size and forget about the current film usage status. It is possible to confirm and select a more suitable screen size.

Further, in the frame number display device of the cameras of the first to fifth examples, the content of the number of the frames selected and displayed is the lighted display, but it is of course possible to perform the blinking display. Is.

[Additional Remarks] According to the embodiments of the present invention described in detail above, the following configurations can be obtained. That is, (1) a camera having a screen size switching means is provided with at least a plurality of frame counters for counting the number of photographed frames for each screen size, a display circuit, and a selection switch, and according to the operation of the selection switch, A frame number display device for a camera that selectively displays the contents of a plurality of frame number meters.

(2) A timer means for starting time counting by operating the selection switch is provided, and the content of the frame number counter is displayed for a predetermined time counted by the timer means.
The frame number display device for a camera according to (1) above.

(3) The frame of the camera described in (1) above, which detects that the film has begun to be fed or the rear cover is closed and erases the contents of the plurality of frame counters. Number display device.

(4) In a camera having a screen size switching means, a means for storing screen size information for each image frame, a display circuit, and an operation switch are provided, and the screen size information is changed in accordance with the operation of the operation switch. A camera frame number display device for selectively displaying.

(5) Screen size switching means for switching the screen size on the film surface, means for obtaining the number of image frames for each screen size, and image frame for each screen size obtained by the means for obtaining the number of image frames A display device for displaying the number, and a device for displaying the number of frames of a camera.

(6) The frame number display device for a camera according to (5), wherein the means for determining the number of frames to be photographed comprises a plurality of frame number counters for counting the number of frames to be photographed for each screen size.

(7) The camera frame number display device as described in (5) above, wherein the means for determining the number of imaged frames stores the screen size for each imaged frame and determines the number of imaged frames based on this storage.

(8) In the above-mentioned (5) to (7), the camera is further provided with counting means for counting the total number of photographed frames and display means for displaying the total number of photographed frames counted by the counting means. The frame number display device of the described camera.

According to the frame number display device of the camera described in the above (1), the number of frames to be photographed can be easily confirmed for each screen size by operating the operation switch. According to the frame number display device for a camera described in (2) above, the display can be performed only for the required predetermined time. According to the frame number display device of the camera described in the above (3), the number of frames to be photographed is stored until the rear cover is closed to exchange the film, and the number of frames to be photographed is automatically cleared by closing the rear cover. It is convenient because it is done. According to the frame number display device for a camera described in (4) above, since the screen size information is stored for each shooting frame, it is possible to confirm the screen size for each shooting frame and perform shooting for each screen size. The number of frames can be easily confirmed by operating the operation switch. According to the frame number display device of the camera described in (5) above, it is possible to easily confirm the number of frames to be photographed for each screen size. According to the frame number display device for a camera described in (6) above, since it is only necessary to provide the counting means, the configuration is simple. According to the frame number display device for a camera described in (7) above, it is possible to confirm the screen size for each photographing frame and easily confirm the number of photographing frames for each screen size. According to the frame number display device of the camera described in (8) above, it is possible to confirm the total number of frames to be photographed.

[0154]

As described above, according to the present invention, it is possible to provide a frame number display device for a camera in which a user can accurately recognize the screen size.

[Brief description of drawings]

FIG. 1 is an electric block circuit diagram showing a configuration of a main part of a frame number display device for a camera that is a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a main part of a camera to which the frame number display device of the first embodiment is applied.

FIG. 3A is a top view and FIG. 3B is a front view of a camera to which the frame number display device of the first embodiment is applied.

FIG. 4 is an exploded perspective view of an essential part for explaining the display principle of the LCD used in the frame number display device of the camera of the first embodiment.

FIG. 5 is an electric block circuit diagram showing a configuration of a drive circuit of an LCD display unit in the frame number display device of the camera of the first embodiment.

FIG. 6 is a front view showing one display example of the frame number display of the LCD display section in the frame number display device of the camera of the first embodiment.

FIG. 7 is a flowchart showing the operation of the CPU in the frame number display device of the camera of the first embodiment.

FIG. 8 is a flowchart showing a release processing algorithm by operating the 1st release switch and the 2nd release switch in the frame number display device of the camera of the first embodiment.

FIG. 9 is a flowchart showing a frame number display switching process in the frame number display device for the camera of the first embodiment.

FIG. 10 is a front view showing a display example of an LCD display unit in the frame number display device of the camera of the first embodiment.

FIG. 11 is a flowchart showing a process of storing a shooting state in the frame number display device of the camera of the first embodiment.

FIG. 12 is a front view showing a viewfinder display section of a camera to which the frame number display device of the first embodiment is applied.

FIG. 13 is a top view of a camera to which the frame number display device according to the second embodiment of the present invention is applied.

FIG. 14 is a front view showing a display example of an LCD display unit in the frame number display device of the camera of the third embodiment of the present invention.

FIG. 15 is a front view showing a display example of an LCD display unit in the frame number display device of the camera of the fourth embodiment of the present invention.

FIG. 16 is an electric block circuit diagram showing a configuration of a main part of a frame number display device for a camera which is a fifth embodiment of the present invention.

FIG. 17 is a flowchart showing an operation of a frame number display switching process in the frame number display device of the camera of the fifth embodiment.

FIG. 18 is a front view showing a display example of an LCD display unit in the frame number display device of the camera of the fifth embodiment.

FIG. 19 is a top view of a camera to which the frame number display device of the fifth embodiment is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Microcomputer 2 ... Display circuit 3 ... Storage element 4a ... N switch 4b ... P switch 4c ... H switch 5 ... Release switch 6 ... Screen size changeover switch 7 ... Rear cover switch 8 ... CPU 9 ... Timer 10 ... Display data RAM 38 ... LCD display section

Claims (3)

[Claims] 1. A screen size switching means for switching the screen size on the film surface, a means for obtaining the number of photographed frames for each screen size, and a number of photographed frames for each screen size obtained by the means for obtaining the number of photographed frames. A display device for displaying the number of frames, and a display device for displaying the number of frames of a camera. 2. A frame number display device for a camera according to claim 1, wherein said means for determining the number of frame frames comprises a plurality of frame number counters for counting the number of frame frames for each screen size. . 3. The number of frames of the camera according to claim 1, wherein the means for obtaining the number of image frames stores the screen size for each image frame and obtains the number of image frames based on this memory. Display device.