JPH0619504B2 - Camera data recorder - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an improvement of a data recording device of a camera that records data such as a shooting date on a shooting medium such as a film by a data recording means.

(Background of the Invention) Conventionally, a device of this type is configured to print data for each release of a camera, that is, data such as a shooting date is recorded in a frame at the time of film winding performed after the filming is finished. Since the structure of imprinting is general, even if the data is mistakenly set, it is impossible to correct it.

That is, in the above-described device, in order to prevent improper data from being imprinted or improper imprinting on a frame that is not desired to be imprinted, those confirmations must be made before release. But not
At the time of release, the release timing, focusing, exposure, etc. were taken into consideration, and there was no room to consider the confirmation of the imprint data, resulting in a high risk of improper imprint.

There is also proposed a device in which data corresponding to each frame is temporarily stored and the stored data is imprinted in each frame when the film is rewound. There is nothing that allows you to check and correct that data as needed,
A device that enables these has been desired.

(Object of the Invention) An object of the present invention is to provide a data recording device for a camera which can solve the above-mentioned problems, confirm recorded data, and correct if necessary as a result of confirmation. Is to provide.

(Characteristics of the Invention) In order to achieve the above object, the present invention stores in advance data recording means for recording data relating to photographing on a photographing medium, and data recorded by the data recording means on the photographing medium in advance. Storage means for storing, display means for allowing the user to confirm whether the data stored in the storage means is appropriate as data to be recorded on the photographing medium, and recording of the data recording means on the photographing medium In response to the start of the operation, the confirmation means for automatically displaying the data stored in the storage means on the display means before the data recording means actually starts the recording operation on the photographing medium, and the confirmation means displays the data. The correction means for correcting the data stored in the storage means while observing the displayed display means, and the prohibition means for prohibiting the recording operation of the data recording means on the photographing medium during the correction operation of the correction means. This And are characterized.

(Examples of the Invention) Hereinafter, the present invention will be described in detail based on illustrated examples.

FIG. 1 shows the basic configuration of the present invention, and its operation will be described below.

Each time the release signal is input, the control circuit 201 stores the data in the storage unit 202 that stores the imprinted data such as the shooting date corresponding to each frame.

After that, when a film end signal, that is, a signal indicating that the shooting to the last frame is finished, is input from the film state detection means 203 which detects the state (position) of the film at the time of winding or rewinding the film, the storage means 202
Since the imprinted data is stored in the control circuit 201,
Outputs a film rewinding prohibition signal to the film rewinding means 204 to prohibit the rewinding operation. At the same time, a warning display (a warning display as to whether or not it is not necessary to correct each data imaged in each frame during rewinding) is displayed on the display means 205 capable of displaying the data. As a result, when the photographer determines that the correction is necessary, the photographer corrects the data by the correction unit 206 while watching the display on the display unit 205.

When the operation as described above is performed, the control circuit 201 corrects the stored contents in the storage means 202 to the data corrected by the operation. When it is detected that the photographer has operated the rewinding start operation means 207 after the operation is finished, the output of the film rewinding prohibition signal output to the film rewinding means 204 is stopped. Film rewinding is started), and this time, based on the position signal of each frame input from the film state detecting means 203, the imprinting data corresponding to each frame is read from the storing means 202 and the data is copied. The imprinting means 208 imprints it on a predetermined position.

On the other hand, when the film end signal is input from the film state detection means 203, if the imprinting data is not stored in the storage means 202, the control circuit 120 sends the film rewinding prohibition signal to the film rewinding means 204. No output is performed, so the rewind operation is started immediately.

2 to 4 show examples in which the embodiment shown in FIG. 1 is embodied, and FIGS. 2 (a) and 2 (b) are perspective views showing respective states when the apparatus of the embodiment is mounted on a camera. Yes, FIGS. 3 (a), (b), and (c) are a plan view, a rear view, and a perspective view of the main part thereof, and FIG. 4 is a block diagram of a specific example.

In FIGS. 2 (a) and 2 (b), 1 is a camera main body, 2 is a data imprinting device, 3 is an LCD (liquid crystal display) for externally displaying imprinted data such as a shooting date, and 4 to 11 are imprints. Keys used when setting and modifying the embedded data, 4 is a clear key, 5 is a cursor (←) key, 6 is a down key, 7
Is an up key, 8 is a cursor (→) key, 9 is a set key, 10 is an on / off key for setting a flag for imprinting to “1” or “0”, and 11 is a rewind key. 12 is a film, 13 is a pressure plate, 14 is a film 12
An LED array, which is a light source for data imprinting, in which seven LEDs (light emitting diodes) are arranged in a direction orthogonal to the rewinding direction of, and 15 is an imaging lens disposed on the entire surface of the LED array 14. .

In FIGS. 3 (a) (b) (c), 16 is a taking lens, 17 is a back cover, 18 is a cartridge, and 19 is a film rewinding motor which is driven and controlled by a control circuit of a camera which will be described later. The rotation of 19 rotates the fork 21 via the two-stage gear 20, and the rewinding of the film 12 is started. 22 is an aperture, 23 is a film 1
It is a sprocket having teeth that mesh with the second perforation, and starts to rotate due to the movement of the perforation accompanying the film rewinding. Reference numeral 24 is a sprocket gear fixed to the upper portion of the sprocket 23 and performing the same movement, 25 is a signal gear rotated by transmitting the output of the sprocket gear 24, and 26 is fixed to the lower surface of the signal gear 25. The signal contact piece 27 is a signal board composed of three patterns 27a to 27c and output pins connected to each of them as shown in FIG. 3 (c) (detailed configuration will be described later with reference to FIG. 5). When the signal contact piece 26 slides on the substrate, the position detection of the film 12 and the data transfer timing are detected. 28 is a main plate,
Reference numeral 29 is a take-up spool.

In FIG. 4, reference numeral 100 denotes a microcomputer that controls the entire data imprinting device 2 and has a CP inside.
U100a, RAM100b for storing various data from the camera and information necessary for data imprinting, ROM100 in which the data imprinting procedure is programmed
c, I / O 100d to 100h. 101 is a crystal oscillator that generates a reference clock, and 102 is FIG.
Operation members corresponding to various keys 4 to 11 shown in (a), 1
Reference numeral 03 denotes a display drive circuit which drives the LCD 3 for displaying data for imprinting in accordance with a signal from the microcomputer 100, and 104 denotes LE which is a light source for imprinting data.
A light emission drive circuit that blinks the D array 14 in accordance with a timing signal from the microcomputer 100, and 105 is an external expansion RAM that stores shooting information from the camera and data for imprinting.

Reference numeral 106 denotes exposure control of the camera and film feed control in accordance with the film position signal from the signal board 27, and shooting information (shutter time, aperture value, ISO value, exposure correction value, etc.), data imprinting timing signal, etc. Is transmitted to the microcomputer 100 in the data imprinting apparatus 2, a control circuit 107 is turned on / off in accordance with a signal from the control circuit 106 of the camera, and a switching transistor 108 is used for turning on / off the motor 19. When a hexadecimal code corresponding to the data to be imprinted is stored in the imprinting data storage area (details will be described later) in the external expansion RAM 105, that is, a code other than a code indicating blank is stored. If it is turned on, it is turned off by pressing the rewind key 11. A Tsu quenching transistor is connected to the base of the collector of the switching transistor 108 switching transistor 107. The switching transistor 108 may be arranged in the data imprinting device 2. 10
A battery 9 is a drive source of the rewinding motor 19.

Next, the signal board 27 and the signal contact piece 26 sliding on the signal board 27 will be described in detail with reference to FIG.

FIG. 5 (a) shows the signal board 27 fixed to the base plate 28 of the camera. The signal contact piece 26 attached to the lower surface of the signal gear 25 is rotated and slid on the signal board 27 in the direction of arrow X when the film is wound, and in the direction of arrow Y when the film is rewound. In any case, the signal signal contact piece 26 is equivalent to one frame (3 mm for 35 mm film).
When the 8 mm) film is fed, the signal board 27 is rotated once. Three types of patterns 27a to 27c are formed on the surface of the signal board 27, and the pattern 27c therein is held at the ground (GND) potential.

When the photographing of a frame for which the release has been performed is completed, the control circuit 106 of the camera controls the drive of a winding motor (not shown) to start winding the film 12. Then, in the state of FIG.
The signal contact piece 26, which is located over (a to 27c), starts to rotate in the direction of arrow X, and the signal contact piece 26 causes the pattern 2 to move.
7a and 27b are closed and opened with respect to the pattern 27c. FIG. 5 (c) shows patterns 27a and 27 at this time.
Outputs P ₁ and P ₂ from b are shown. If the signal contact piece 26 is located at the position shown in FIG.
Both a and 27b are closed (on) with respect to 27c,
This state corresponds to the position of STP1 in FIG. 5 (c).

When the film winding progresses and the signal contact piece 26 comes into contact with the region A of the pattern 27a engraved with the pitch angle α, the interval of one pulse period T of the output P ₁ corresponding to one pitch of the pattern 27a becomes Feed amount of film 12 (=
Because corresponds to α / 360 ° × 38mm), as the output P ₁ at that time becomes as many repeated on-off Kaee to signals in accordance with the feeding amount of the film 12 (region A of the pattern 27a in the present embodiment, 43 pitch). By detecting the period T of the output P ₁ , the control circuit 106 of the camera detects a power supply drop during film feeding, a film bulge described later, and the like.

When the film winding further proceeds, the output P ₂ is turned on again, and then the output P ₁ is also turned on. The control circuit 106 of the camera controls the winding speed of the film 12 by performing energization control on the winding motor (not shown), that is, duty control (reducing the effective value of the energizing current to the winding motor) by detecting the ON state of the output P _2. When the film is dropped and the next output P ₁ is also detected at the same time, the energization of the winding motor is stopped and the film winding inhibition operation (braking operation) is performed. As a result, the winding of the frame that has been photographed (winding of one frame) is completed. Since the winding motor actually idles even after the energization of the winding motor is stopped, the film 12 also idles accordingly. Therefore, the signal contact piece 26 has the edge portion of the pattern 27a (when rotating in the X direction). The initial position) of FIG. 5A to the position shown in FIG. The position of STP2 in FIG. 5 (c) corresponds to this. Further, the ON period of the outputs P ₁ and P ₂ at each STP position is set sufficiently longer than the ON / OFF cycle in the area A of the pattern 27a.

After that, when the release is performed in a state where the signal contact piece 26 is located on the STP2, the image pickup for the next frame is performed, the winding of the frame is started following the end of the image pickup, and the signal substrate 27 and the signal contact piece 26 are started. On the basis of the film position signal generated by the control circuit 26, the same winding control as described above is performed by the control circuit 106 of the camera.

FIG. 5 (b) shows the state of FIG. 5 (c) corresponding to the actual film position. Since the film 12 stops at the position of STP2, one frame of shooting is set as the interval between STP1 and STP2. (38 mm for 35 mm film) is determined. When shooting is performed at this position, the area within the frame D is exposed and exposed, and the subject is captured as a latent image. In the figure, L ₁ indicates the distance from the center of the photographing screen (frame D) to the LED array 14 which is a light source for data imprinting,
L ₂ and L ₃ are distances indicating the position of data imprinting (up to 30 digits of data can be imprinted in the present embodiment) on the desired film surface (for details, refer to the first value at the time of data imprinting operation). 5) The control circuit 106 of the camera performs the winding control (and the exposure control, etc.) as described above, and at the same time, the shutter speed, aperture value, ISO value, exposure correction value, etc. for each release are set. A microcomputer 100 in the data imprinting device 2 for photographing information and the film position signals (the outputs P ₁ , P ₂ ).
However, the operation of the data imprinting device 2 side where various data is transmitted from the camera side in this way will be described below.

The microcomputer 100 shown in FIG. 4 is supplied with a basic clock from the crystal oscillator 101, an address is initialized by a reset circuit (not shown), and the program is executed according to the contents of the ROM 100c. Before going into the detailed description, an outline thereof will be described with reference to the flowchart of FIG. 6. It is determined whether or not the data is sent from the camera side, and when it is detected that the data is sent, the camera sends the data. The data is processed (detailed with the flowchart of FIG. 7 (a)). On the other hand, when it is detected that no data has been sent, the operation of the operation member 102,
That is, it is determined whether or not any one of the various keys 4 to 11 is being operated, and if the key is being operated, a jump is made to a program for performing, for example, data correction associated with the key operation (7th step). Details will be described with reference to the flowchart of FIG.

Next, a configuration and a storage method in the external expansion RAM 105 that stores the shooting information sent from the camera and the imprint data set by the operation member 102 for each release will be described with reference to FIG. .

As shown in FIG. 8, the storage area is divided into an imprint data storage area and a photographing information storage area. The imprint data storage area has a capacity of one film (36 sheets × 30). (Character / sheet), that is, a capacity for 1080 characters is secured.

When a frame is released when the film 12 is loaded, each information at that time is stored in the imprint data storage area and the shooting information storage area. However, if the memory is set not to be stored, a blank code (30 hexadecimal 20H codes (see FIG. 10) is stored in the imprinted data storage area and the pointer is moved to the storage area of the next frame. Proceed. Further, nothing is stored in the photographing information storage area, and the operation of advancing the pointer is not performed. That is, the shooting information is stored in the shooting information storage area in the order in which the shooting information to be stored is sent. When rewinding,
The data in which the data to be imprinted in the final shooting frame is stored, for example, in the case of a film of 36 shots, the data is sequentially read from the data stored in the imprint storage area of the 36th sheet.

The H of 20H means hexadecimal notation, and details will be described with reference to FIG. Whether or not data is imprinted on the released frame is determined by a flag "1" or "0" stored in the RAM 100b, which is set depending on whether or not the on / off key 11 is operated. To be done. Further, the shooting information stored in the shooting information storage area is under what conditions (shutter speed,
This is the data to confirm later whether it was performed with the aperture value etc.).

Next, the operation on the data imprinting device 2 side will be described with reference to FIG.

[Step 1] The data sent from the camera is received. This first communication content represents the state of the camera, that is, the release state or the rewind state.

[Step 2] It is determined whether or not the camera is in the release state. If the camera is in the release state, the process proceeds to step 3; otherwise, the process proceeds to step 12.

[Step 3] Data of shooting information such as shutter speed, aperture value, ISO value, and exposure correction value for the released frame is received, and the information is displayed on the display drive circuit 10.
3 is displayed on the LCD 3.

[Step 4] It is determined whether or not the film 12 is loaded in the camera. If the film 12 is not loaded, the shooting information and the imprinting data are not stored. If the film 12 is loaded, the process proceeds to step 5.

[Step 5] The flag of the photographing information storage is set to "1" by the operation member 102 (the key for setting the flag is shown in FIG. 2).
(not shown in (a)) RAM1
Judging from the inside of 00b, if the flag is set to "1", the process proceeds to step 6, and if it is not set, the process proceeds to step 9.

[Step 6] It is determined whether or not there is an area in which the new shooting information can be stored in the shooting information storage area. If there is no storage area, the process proceeds to step 9. If there is any storage area, the process proceeds to step 9. Go to step 7.

[Step 7] The shooting information at that time is stored in the pointer indicating the storage position of the shooting information storage area in the external expansion RAM 105.

[Step 8] The storage pointer is advanced with the end of storage.

[Step 9] Whether or not the flag of the imprinted data storage is set to "1" by the operating member 102 (the key for setting the flag is not shown in FIG. 2A) is RA.
Judging from the inside of M100b, if the flag is set to "1", the process proceeds to step 10, and if not, the process proceeds to step 11.

[Step 10] The imprinting data set by the operation of the operation member 102 is stored in the imprinting data storage area corresponding to the frame while observing the display on the LCD 3 before photographing.

[Step 11] The storage pointer is advanced with the end of storage.

This is the end of the release process.

On the other hand, when it is determined in step 2 that the camera is not in the release state, the process proceeds to step 12 as described above.

[Step 12] It is determined whether or not the camera is in the rewinding state. If it is in the rewinding state, the process proceeds to step 13.

[Step 13] A warning display indicating that the film 12 is finished, that is, a display prompting confirmation of whether or not the data to be imprinted needs to be corrected before rewinding (data imprinting operation) is started, is displayed. At the same time, the ON signal of the switching transistor 108 for prohibiting the rewinding is output to the switching transistor 108 (here, the case is advanced assuming that the imprinted data is stored in the external expansion RAM 105).

[Step 14] The data is corrected according to the input from the operation member 102.

[Step 15] The switching transistor 108
Whether the rewind key 11 is on or off is determined. If it is off, the process returns to step 14, and if it is on, the step 1
Go to 6.

[Step 16] The off signal of the switching transistor 108 is output to release the rewinding prohibition.

Here, detailed operations of the camera side and the data imprinting device 2 from step 12 to step 16 will be described with reference to FIGS.

When the frame photographed when the signal contact piece 26 of FIG. 5 (b) is located at STP2 (area C) is the final frame of the film 12, the film 12 is once stretched during the subsequent winding operation. Becomes As described above, this state is determined by the control circuit 106 of the camera because the ON / OFF signal of the output P ₁ is not repeatedly generated during the winding operation (the cycle T becomes a certain time or more). As a result, the power supply to the winding motor (not shown) is stopped, and data indicating that the camera is in the rewinding state is transmitted to the data imprinting device 2 side.

On the other hand, when the above-mentioned data is sent from the camera side, the microcomputer 100 causes the display drive circuit 103
A warning display as shown in FIG. 9 is displayed on the LCD 3 capable of displaying 30 characters via the, and the photographer is prompted to confirm the contents of the imprinted data. At the same time, the external expansion RAM 105
Since the imprinted data is stored in the I / O10
A high level signal is output to the switching transistor 108 via 0h, and the switching transistor 10
8 is turned on. Therefore, even if a high level signal is output to the switching transistor 107 from the camera control circuit 106 in order to shift to the rewinding operation by the film thrust detection (from the film position signal), the switching transistor 108 is turned on. Therefore, the switching transistor 107 is not turned on (that is, rewinding is prohibited), and the rewinding motor 19 does not immediately (automatically) rewind the film 12. If the data is not imprinted (if the imprinted data is not stored in the external expansion RAM 107 as described above), the switching transistor 108 remains off. The imprinting operation associated with is started.

The RAM 100 in the microcomputer 100 is entered before the data correction operation in step 14 to be performed next.
A frame count register F is built in b, and its value (content) f is set to data indicating the number of frames each time a release state is transmitted (that is, each time the camera is released). There is. The LCD 3 corresponds to the value f of the register F, that is, the external expansion RA
The f-th imprint data read from M105 is displayed. That is, the value f is, for example, “3”
If so, the data stored in the third imprinted data storage area shown in FIG. 8 is displayed. Also, the RAM1
In 00b, a register N (the content of which is represented by n) that counts which digit of the imprinted data display corresponding to the value f is being corrected, and "1" when data can be set If it is not likely to be, it has a flag of "0" and a display blinking flag j. Also, the CPU 100
a is a program for detecting whether or not the clear key 4, cursor (←) key 5, down key 6, up key 7, cursor (→) key 8 and set key 9 are pressed through the I / O 100d. have.

Further, the imprinted data is stored in the external expansion RAM 105 as a character code shown in a table as shown in FIG. For example ('861/1)
Is displayed in hexadecimal notation, 27H, 38H, 36H,
It is stored as a 9-byte code of 20H, 20H, 31H, 2FH, 20H, 21H, and at the time of display, each code is replaced with a dot pattern according to the table of the figure and displayed.

Next, the detailed operation at the time of data correction will be described with reference to the flowchart of FIG. 7 (b).

[Step 51] It is determined whether or not data set is possible. If it is possible (flag s = 1), the process proceeds to step 52. If not possible (flag s = 0), step 60 is performed.
Go to.

[Step 52] When the flag is s = 1, it is determined whether or not the set key 9 is pressed. If it is pressed, the process proceeds to step 53, and if not, the process proceeds to step 62.

[Step 53] The flag indicating whether setting is possible is set to s = 0, and the operation when the data setting is not possible in steps 54 to 59, that is, the operation for selecting a frame for correction is advanced.

[Step 54] It is determined whether or not the up key 7 is pressed. If the up key 7 is pressed, the process proceeds to step 55, and if not, the process proceeds to step 56.

[Step 55] Each time the up key 7 is pressed, the value f of the frame count register F is changed by "+1".

[Step 56] It is determined whether or not the down key 7 is pressed. If the down key 7 is pressed, the process proceeds to step 57, and if not, the process proceeds to step 58.

[Step 57] Every time the down key 7 is pressed, the value f of the frame count register F is changed by "-1".

[Step 58] The value f of the register F for frame count is displayed on the LCD 3.

[Step 59] The value n of the register N for counting the digit number of the data being corrected is set to "1", and the display blinking flag j is set to j = 0.

On the other hand, as described above, if the flag s = 0 in step 51, the process proceeds to step 60.

[Step 60] When the flag s = 0, it is determined whether or not the set key 9 is pressed.
If it is not pushed, the routine proceeds to the routine after step 54.

[Step 61] The flag indicating whether or not the data can be set is set to s = 1, and the operation in and after step 62 when the data setting is possible is advanced.

At this time, n and j are n = 1 and j when s = 0.
Since = 0 is set, a cursor display (display shown as 5FH in the table of FIG. 10) is performed instead of the first character. After that, since j = 1, the characters are displayed as they are in the next display. That is, 1 in this state
As the second display, the cursor display and the character display are alternately displayed on the LCD 3.

[Step 62] It is determined whether or not the cursor (→) key 8 is pressed, and if it is pressed, the process proceeds to step 63.
If it has not been pressed, the process proceeds to step 64.

[Step 63] The value n of the register N is changed by "+1" every time the cursor (→) key 8 is pressed. That is, as described above, the digit at which the character display and the cursor display are alternately displayed is sequentially moved. FIGS. 11 (a) and 11 (b) show the alternate display state of the character display and the cursor display when n = 8 is selected as the digit to be corrected.

[Step 64] It is determined whether or not the cursor (←) key 5 is pressed, and if it is pressed, the process proceeds to step 65.
If it has not been pressed, the process proceeds to step 66.

[Step 65] Every time the cursor (←) key 5 is pressed, the value n of the register N is changed by "-1". That is, the alternately displayed digits of the character display and the cursor display are sequentially moved in the opposite direction to that of step 63.

[Step 66] It is determined whether or not the up key 7 is pressed. If it is, the process proceeds to step 67. If it is not, the process proceeds to step 68.

[Step 67] Every time the up key 7 is pressed, the nth character (nth digit) of the fth frame is changed by "+1".
FIG. 11 (c) shows the state when n = 8 (see FIG. 11).
(during state (a) and (b)) Up key 7 was pressed once and the data changed "+1", that is, 38H became 39H, and the number "8" was changed to "9". Indicates the status.

[Step 68] It is determined whether or not the down key 7 is pressed. If the down key 7 is pressed, the process proceeds to step 69. If not, the process proceeds to step 70.

[Step 69] Every time the down key 7 is pressed, the n-th character of the f-th frame is changed by "-1".

[Step 70] It is determined whether or not the clear key 4 has been pressed. If so, the process proceeds to step 71. If not, the process proceeds to step 72.

[Step 71] Since the clear key 4 has been pressed, the content of the nth data is set to 20H (the blank code described above).

[Step 72] The LCD 3 is caused to display the entire imprinted data of the f-th frame which has been corrected by the operations from step 62 to step 71.

[Step 73] The determination is made based on whether the flag j is "1" or "0". If j = 0, the process proceeds to step 74, and if j = 1, the process proceeds to step 76.

[Step 74] The cursor is displayed instead of the nth character, and the process proceeds to step 75.

[Step 75] The flag j is set to j = 1.

[Step 76] Since j = 1 is determined in step 73, j = 0 is set here.

When all of the above data are set, the set key 9 is pressed again to return to the state where data cannot be set.

Next, when the photographer presses the rewind key 11 to start rewinding, the output from the I / O 100h in the microcomputer 100 shown in FIG. 4 is inverted from a high level signal to a low level signal, and switching is performed. The transistor 108 is turned off. This means that the rewind prohibition state has been released. Therefore, the switching transistor 107 is turned on, the energization of the rewinding motor 19 is started, and the motor 19 starts rotating in the rewinding direction.

Returning to the explanation of the flowchart of FIG. 7 (a) again, the operation after step 17 will be described. The operation of each step will be briefly described, and then the series of detailed description will be given as described above.

[Step 17] The data sent from the camera is received.

[Step 18] It is judged in step 17 whether or not the rewinding start signal has been sent, and by detecting the sending, the process proceeds to step 19.

[Step 19] The data sent from the camera side again, that is, the rewinding end signal, the imprinting signal, or the discard pulse signal or the like corresponding to the period in which imprinting is not performed (that is, the imprinting timing signal) is received.

[Step 20] It is judged whether or not the rewinding end signal is sent. If it is detected that the signal is sent, the process goes to step 25. If not, the process goes to step 21.

[Step 21] It is judged whether or not the imprinting signal has been sent, and if it is detected that the signal has been sent, the process proceeds to step 22, and if not, the process returns to step 17.

[Step 22] It is determined whether or not a discard pulse signal has been sent. If it is detected that the pulse signal has been sent, the process returns to step 19, otherwise the process proceeds to step 23.

[Step 23] One character is imprinted in accordance with the imprinting signal detected in step 21, and when it is completed, the process proceeds to step 24. Therefore, in this embodiment, this operation is 1
It will be done up to 30 times in a frame.

[Step 24] The storage pointer of the imprinted data is decremented by 1, and the process returns to step 19.

When the operations from step 19 to step 24 have been performed for the number of captured images, the rewind end signal is detected in step 20, and the process proceeds to step 25.

[Step 25] The storage pointer of the imprint data is set to the initial position.

With the above, a series of operations are completed. Here, detailed operations on the camera side and in the data imprinting device 2 from step 17 to step 24 will be performed with reference to FIGS.

It is uncertain at which position on the signal board 27 in FIG. That is, it can occur in all the regions A to C. In the embodiment of the present invention, the imprinted data is stored in the external expansion RAM 105 at the time of taking a photograph,
Since the information (or the information obtained by correcting the information before rewinding the film) is read during the film rewinding, the LED array 14 for imprinting is blinked to imprint the imprinted data and the actual photographing frame. However, if the film rewinding is not 1: 1 as well, there is a serious problem that information different from that at the time of shooting (for example, information shifted by one frame) is imprinted.
Therefore, in the rewinding after the film is stretched, it is surely detected that the portion corresponding to the final shooting frame of the film 12 passes through the LED array 14 (with reference to the beginning), and the imprinted data of the final shooting frame is recorded. The LED
It is imperative to imprint by flashing the array 14.

As described above, the film bulging position can occur in all the areas A to C on the signal board 27. Therefore, in this embodiment, after the rewinding of the cueing of the final shooting frame is started (the signal contact piece 26 starts rotating in the direction of arrow B in FIG. 5 (a)), the outputs P ₁ and P ₂ are simultaneously output. Turned on (Fig. 5
This can be achieved by having a configuration in which it is detected by (passing through the area C of (a) and (c)) and then the imprinting operation to the final photographing frame is started. The outputs P ₁ , P
_{Even after two} simultaneous ON signals are output, the output P ₁ is continuously output from the signal board 27 for each rewinding α. In this embodiment, one digit of the imprinted data is imprinted in one pulse of the output P ₁ that is continuously output in the area A.

Here, each of the output P ₁ is continuously output pulses give numbers of "1" to "43" (FIG. 5 (c) refer) and the desired imprint head distance L2 (FIG. 5 ( b)) to obtain the LED array 14 in the first to ninth pulses.
Is controlled so as not to blink (that is, the 1st to 9th pulses are discarded pulses), and the LED array 14 blinks in accordance with the 10th to 39th pulses in order to imprint up to 30 digits within the following distance L3. Then, 30 characters are formed on the surface of the final photographing frame, and the LED array 14 is controlled so as not to blink again in the subsequent 40th to 43rd pulses.

When the rewinding angle α further advances, the data of the simultaneous ON signals of the outputs P ₁ and P ₂ are sent again from the camera side, and the next shooting frame is also based on the data of the output P ₁ that is also output subsequently. The data imprinting device 2 thereafter performs the same operation based on the data from the camera side until the imprinting on the first photographing frame is completed.

Next, how to set the blinking timing of the LED array 14 will be described.

During the rewinding, the speed of the film 12 fluctuates, and there is a risk that the character width of the imprinted characters displayed in a dot matrix and the pitch between the dots become uneven, but in order to prevent this. Needs to absorb fluctuations.
This point will be described with reference to FIGS. 5 (d), (e) and (f).

FIG. 5 (d) is an enlarged display of the 9th to 11th pulses in FIG. 5 (c) with the horizontal axis as the time axis. Each cycle is T
9, T10, T11. LED array 13 is 7 vertically
The LEDs are arranged side by side, and in order to form a character with a 5 × 7 dot matrix, it is necessary to light five times during one pulse of the output P ₁ . Further, since an appropriate margin is required between adjacent characters, one pulse of the output P ₁ is divided into seven, characters are formed by 5/7 of one pulse, and a margin is formed by the remaining 2/7. I am doing it. Also, FIG. 5 (e) shows the LED array 1
4 shows a lighting pulse, and FIG. 5 (f) shows a 5 × 7 dot matrix character obtained by this.

The LED array 14 is controlled so as to start blinking from the 10th pulse of the output P ₁ , and its blinking period is determined by the 9th pulse. That is, T
The blinking period is set to 9/7, and the lighting time of the LED array 14 once is set to T9 / 14 or less. This is a necessary condition for keeping the quality of the imprinted character by obtaining the resolution between dots by setting the moving amount of film during lighting to 1/2 or less of the distance between adjacent dots. Similarly, the blinking cycle of the LED array 14 at the 11th pulse of the output P ₁ is T10 / 7, the 12th pulse.
The pulse is T11 / 7.

Thus, the output P ₁ before one character (one pitch) (this is sufficiently smaller than the film feed amount for one frame)
By imprinting characters and dot distance, that is, LED
Since it is configured to determine the blinking cycle of the array 14,
Even if the film speed fluctuates during rewinding, it is possible to sufficiently cope with it, and it is possible to eliminate irregularities in character width and inter-dot distance.

According to this embodiment, the external expansion RAM 105 for storing the imprinting data at the time of photographing and the operation member 1 for correcting the data.
LCD having 02 and displaying imprinted data
3 and when it is detected that some imprinted data is stored in the external expansion RAM 105 when the data indicating that the film is finished is sent, a warning is displayed and the rewinding operation is prohibited. However, if it is necessary to confirm whether or not the data needs to be corrected, the imprinted data corresponding to an arbitrary shooting frame can be L
Since the data is displayed on the CD3 and the data can be corrected by the operation member 102 while looking at it, the imprinted data can be confirmed and the data can be corrected. Further, since the rewinding is started by the rewinding operation by the photographer's intention after the warning is displayed as described above, it is possible to prevent erroneous data from being copied before being corrected.

(Correspondence between the Invention and the Embodiment) In the above-mentioned embodiment, the LED array 14 and the light emission drive circuit 104 serve as the data recording means of the present invention and the external expansion RA.
The M 105 serves as a storage means, and the LCD 3 and the display drive circuit 10 are provided.
3 corresponds to the display means, the microcomputer 100 and its step 13 to the confirmation means, the operation member 102 to the correction means, and the switching transistor 108 to the prohibition means.

(Modification) In this embodiment, a warning display (to prompt confirmation of whether or not data correction is necessary) is sent and data is rewound when data indicating the film bulging state is sent from the camera side. Although the configuration is such that it is prohibited, the invention is not limited to this. For example, the number of shootable images is obtained in advance, and this value is compared with the value of the counter that counts the number of frames for each release. It may be configured to display a warning and prohibit rewinding.

Further, as described above, when the film is finished, both the warning display and the rewinding prohibition are performed, but only one of them may be performed. Also, as a character imprinting input means,
Although the cursor keys 5 and 8 and the up and down keys 6 and 7 are arranged and a character is selected and inputted by these, it goes without saying that a method of inputting with a keyboard or the like may be adopted.

Furthermore, at the end of the film, a warning is displayed to prompt the data correction, and the data can be corrected at this time, but the data correction is not limited to this, and the data correction can be performed after shooting a frame and winding the frame. That is, it is possible to read the imprinted data corresponding to the previous frame before the start of photographing for the next frame, and to modify it if necessary.

(Effect of the Invention) As described above, according to the present invention, it is possible to confirm the record data to be recorded on the photographing medium by the data recording means before the recording operation is actually performed on the photographing medium. It can be modified if necessary.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a perspective view showing a camera equipped with the apparatus of the embodiment shown in FIG. 1, and FIG. 3 is a mechanical structure of its main part. FIG. 4, FIG. 4 is a block diagram embodying the embodiment shown in FIG. 1, FIG. 5 is a view for explaining data imprinting in the embodiment of FIG. 4, and FIG. 6 is a schematic flowchart thereof.
FIG. 7 is a detailed flowchart of the same, FIG. 8 is a diagram for explaining the external expansion RAM of the embodiment shown in FIG. 4, and FIG.
The same figure shows a warning display state on the LCD, FIG. 10 shows a character code map of imprint characters of the embodiment shown in FIG. 4, and FIG. 11 shows data correction in the embodiment shown in FIG. It is a figure explaining. 1 ... Camera body, 2 ... Data imprinting device, 3 ...
LCD, 4-11 ... key, 12 ... film, 14 ...
... LED array, 20 ... rewinding motor, 26 ... signal contact piece, 27 ... signal board, 100 ... microcomputer, 102 ... operating member, 105 ... external expansion RA
M, 106 ...... camera control circuit, 103 ...... display driving circuit, 104 ...... light emission drive circuit, 107 and 108 ...... switching _transistors, P 1, _{P 2} ...... output, T ......
Cycle, L1 to L3 ... Distance.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Ito Kenji Ito, 770 Shimonoge, Takatsu-ku, Kawasaki-shi, Kanagawa Canon Inc. Tamagawa Plant (72) Kenichiro Amano 770 Shimonoge, Takatsu-ku, Kawasaki-shi, Kanagawa Canon Inc. Tamagawa Plant (56) Reference JP 58-144336 (JP, A) JP 60-159833 (JP, A) JP 57-53740 (JP, A) JP 57-37340 (JP, A) Actual development 61-88129 (JP, U) Actual development 61-53737 (JP, U)

Claims (1)

[Claims] 1. A data recording means for recording data relating to photographing on a photographing medium, a storage means for preliminarily storing data to be recorded on the photographing medium by the data recording means, and the storage means. Display means for allowing the user to confirm whether the stored data is appropriate as data to be recorded on the photographing medium, and automatically in response to the start of the recording operation of the data recording means on the photographing medium. A confirmation unit for displaying the data stored in the storage unit on the display unit before the data recording unit actually starts the recording operation on the photographing medium; and the display displayed by the confirmation unit. A correction means for correcting the data stored in the storage means while observing the display of the means, and a prohibition means for prohibiting the recording operation of the data recording means on the photographing medium during the correction operation of the correction means. Data recording apparatus for a camera, characterized in that it comprises and.