JPS626234A - Data imprinting device for camera - Google Patents

Abstract

PURPOSE:To increase the amount of data to be imprinted greatly and make characters of the data large, and to improve easiness to see by varying frame intervals according to the data length of the data to be imprinted which are inputted by a data input means in a film winding direction. CONSTITUTION:A film winding speed is multiplied by an elapsed time to calculated an imprinting period and a control signal is read out successively to drive light emitting element of a data imprinting part 4 successively for illumination. Thus, a film in winding movement is exposed to imprint the data. The imprinting of the input data is completed and then the film is advanced by one frame so as to set a film image plane to be photographed. The frame intervals are varied according to the data length of the imprinted data in the film winding direction to imprint necessary photographic data on a film freely within the limits of imprinting in the film moving direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a data imprinting device for a camera that imprints data related to photography onto a loaded film.

(Background of the Invention) Conventionally, data imprinting devices have been put into practical use that imprint data related to shooting, such as year, month, day, memo at the time of shooting, or exposure information, on the shooting screen of film. If data is imprinted inside the photograph, it may be difficult to read the data due to the influence of the background, or it may not be possible to remove the data after photographing. In order to solve this problem, a device has been proposed that imprints data in the space between frames so that the captured screen and the next captured screen do not overlap. .

(Problem to be Solved by the Invention) However, in such conventional data imprinting devices, since the frame spacing for imprinting data is limited, it is necessary to make the characters of the imprinted data smaller. There were also significant restrictions on the data that could be imprinted.

(Object of the Invention) The present invention has been made in view of these conventional problems, and provides a data imprinting device for a camera that is capable of imprinting a sufficient amount of data and is not affected by the background. The purpose is to provide

(Summary of the Invention) In order to achieve this object, the present invention provides a data imprinting device for a camera that imprints data related to photography in the frame interval between the film screen that has been photographed and the screen that is to be photographed next. In this method, the frame interval is changed according to the imprint data length in the film winding direction of the input data, and the input data is imprinted within this frame interval.

(Example) FIG. 1 is a block diagram showing one embodiment of the present invention.

First, to explain the configuration, 1 is a data input section, which consists of a keyboard, etc., and can input data to be imprinted such as characters and symbols. 2. Here, the microcomputer 2 has a CPU, RAM and R
It is composed of an OM, etc., and realizes a frame interval variable means for varying the frame interval of the film according to the data length of imprint data in the film winding direction in the present invention by program control.

Reference numeral 3 denotes a data display section, which receives the imprint data signal input from the data input section 1 from the microcomputer 2, converts it into a display signal, and displays characters and characters as imprint data on a display element consisting of an LCD, LED, etc. display the symbol,
By looking at the display on the data display section 3, the contents of the imprint data can be confirmed. Of course, the data display section 3 includes a drive circuit for driving display elements such as an LCD or LED.

Reference numeral 4 denotes a data imprinting section, which includes a plurality of light emitting elements such as LEDs and lamps, and a drive circuit for driving the light emitting elements. Here, the light emitting element for data imprinting is
A plurality of units are arranged in a line in the vertical direction on the rewind side of the aperture section of the camera body or back cover, with dimensions approximately the same as the vertical dimension of the aperture, and are driven to emit light in conjunction with the film winding operation when winding the film. Create dot matrix bright spots and expose the film to imprint the data. As this data imprinting section 4, for example, a device disclosed in Japanese Patent Application Laid-Open No. 56-95230 can be used.

5 is a film winding section, which includes a motor, sprocket,
It consists of a spool, etc., and starts film winding in response to a winding start command from the microcomputer 2, and stops film winding in response to a winding stop command.

Reference numeral 6 denotes a winding detection section, which receives a rotary encoder provided on a sprocket in the film winding section 5, a light emitting element that emits light to the rotary encoder, and a light beam reflected by the rotary encoder among the light beams emitted from the light emitting element. It consists of a light receiving element. Here, on the surface of the rotary encoder, parts with different reflectances are formed alternately at equal angles, so the pulses obtained by waveform shaping the light receiving output of the light receiving element are generated at a constant rotation angle of the sprocket, that is, the film , and the pulse output is input to the microcomputer 2.

Reference numeral 7 denotes a release section composed of a release button and a release switch, and a release signal is output to the microcomputer 2 and the exposure control section 8 when the release button is pressed down a certain number of times. The exposure control section 8 controls the exposure of the film based on the shutter speed and aperture value calculated by the arithmetic circuit inside the camera or set by the setting member, and sends an exposure completion signal to the microcomputer 2 when the exposure of the film is completed. Output to. Furthermore, 9 is a film.

Next, the operation of the embodiment shown in FIG. 1 will be explained with reference to the flowchart shown in FIG.

First, when the film 9 is loaded and the power of the camera is turned on, it becomes ready for photographing, and at the same time, data can also be imprinted.

When imprint data such as characters and symbols is input by operating the data input section 1 shown in FIG. 1, the data input section 1 sends a signal corresponding to the input data to the microcomputer 2.
2, input data is read as shown in step 10 of FIG. 2, and input data is stored as shown in step 11. The input data stored in the microcomputer 2 is applied to the data display surface 3 in step 12, and the characters and symbols inputted in the data input section 1 are converted into display signals and displayed on the data display section 3. Therefore, the operator can input various data related to photography while looking at the display state of the data display section 3, and when the data input is completed, the imprint data can be confirmed by the display state of the data display section 3. .

The operations of reading, storing, and displaying input data shown in steps 10 to 12 are repeated until the release section 7 outputs a release signal.

Next, when a release signal is output from the release section 7, the release signal is determined in step 13, and the process proceeds to step 14. Further, since the release signal is simultaneously given to the exposure control section 8, the film is exposed according to the shutter speed and aperture value that are calculated by the calculation circuit inside the camera or set on the setting member. When the exposure control unit 8 finishes exposing the film, an exposure completion signal is output.
This exposure completion signal is determined in step 14, and the process proceeds to the next step 15. In step 15, it is checked whether or not input data for imprinting is stored. If input data is stored, the process proceeds to step 16 to perform calculations for imprinting control. That is, since a plurality of light emitting elements are arranged in a vertical line in the data imprinting section 4 for data imprinting, the input data stored in step 11 is vertically arranged at a predetermined pitch in the film winding direction. A plurality of dot matrix patterns divided by the dot matrix pattern are converted into a signal, and calculations necessary to drive the light emitting element to blink for data imprinting are performed.

Specifically, since the film winding speed can be determined from the pulse period output from the winding detection section 6, the imprinting time T@T=L/V is determined from the imprinting data length using this winding speed V as a variable. , On the other hand, since the imprinting period To as the minimum unit period for blinking each light emitting element is determined in advance, the number N of vertical divisions of the imprinting data by the dot matrix is determined as N=T/To, and N Each imprint control signal for blinking a plurality of light emitting elements arranged in a vertical line for =1 to N is calculated and stored.

Once the imprint control signal for imprinting the input data is calculated and stored, in the next step 17, a command signal to start winding is output from the film winding section, and the motor is rotated to wind the film. When film winding is performed, a waveform-shaped film winding pulse is obtained from the winding detection unit 6 every time the film moves a certain distance, so this film winding pulse is detected in step 18, and the film winding pulse is detected in the next step. By counting the pulse intervals of the winding pulses, the film winding speed can be calculated as the reciprocal thereof. In the next step 20, the imprinting period T is calculated by multiplying the film winding speed V and the elapsed time t.

The imprinting period determined in step 20 is compared with a preset specified imprinting period TO in the next step 21, and is memorized in step 16 every time the specified imprinting period reaches 0. Read out the imprint plate signals in sequence,
By driving the light emitting element of the data imprinting section 4 to emit light,
Data is imprinted by exposing the film that is being wound and moving. The speed detection, cycle calculation, and imprinting from steps 18 to 21 are repeated until all imprint control signals are output to the data imprinting section 4 in step 22.

When all input data has been imprinted, step 2
In step 3, the winding amount for one frame is calculated in order to take out the film screen to be photographed next. This film winding amount for one frame is the film winding amount obtained by adding the length of one frame required for the next photographing to the specified frame interval.

In the next step 24, the shutter charge and mirror charge are started almost simultaneously with the start of winding after data imprinting, and the actual film winding is started by the processes of the next steps 25, 26 and 27. , reaches the winding value ff1L calculated in step 23.

That is, in step 25, the film winding pulse obtained from the winding detection section 6 is detected, and from the count of this pulse, the actual film winding II is calculated in step 26, and in the next step 27, the film winding ML calculated in step 23 and the actual film winding ML are calculated. Detection of the winding pulse, calculation of the winding amount L, and comparison are repeated until a relationship of 1≧L is obtained, and the winding of one frame corresponding to the calculated winding amount is determined. Then, in step 28, the motor is stopped to finish winding the film, and at the same time, the shutter charge and mirror charge started in step 24 are completed.

In this way, after the data imprinting linked to the film winding after shooting is completed, the film is wound for one frame for the next shooting, so there is a gap between the data imprinting area and the next shooting frame. have no overlapping parts. In other words, it is impossible for data to be imprinted on the photographed film portion.

When the film winding as described above is completed, the process returns to step 10 to prepare for inputting imprint data for the next photographing.

On the other hand, if there is no data input for imprinting, the process proceeds from step 15 to step 29, and the winding amount of a portion of the film is calculated. For example, for 35mm film, the winding length for one frame is perforation 8.
The winding amount for one frame is required so that it does not overlap with the next photographed film screen. Next, in step 30, film winding is started, and in the same manner as when data imprinting has been completed, the film is wound for the next photographing through the processes of steps 24 to 28.

FIG. 3 shows an example of a film on which data has been imprinted according to the present invention. The film 9 has photographed film screens 31, 32, 33° 34, and the frame intervals between them are 41, 33, 34. 42.43, and this piece interval is 41~
The data is imprinted on 43. Note that the arrow indicates the film winding direction at the time of photographing, and in order to make it easier to read the characters in the imprint data, the film is viewed from the upright direction.

First, photographic data of the film screen 11 is imprinted in the frame interval 41 between the film screens 31 and 32. As for the data imprinting state, it is desirable to imprint data that matches the display state of the data display section 3, and the total length that can be imprinted in the film movement direction is the maximum display in the film movement direction on the display section. It is desirable to match the display limit given by the number of characters.

The frame interval 42 indicates the case where data imprinting is not performed, and is the same interval as the frame interval of a normal camera.

Further, data imprinting with a frame interval of 43 is performed when vertical arrangement of the imprint data is specified at the time of data input. Note that when the imprint data is arranged vertically in this way, it is desirable that the data display section 3 also display the data in a vertical arrangement.

As is clear from the data imprinted film shown in FIG. 3, in the data imprinting of the present invention, the frame spacing is changed depending on the data length of the imprinted data in the film winding direction. Necessary photographic data can be freely imprinted on the film within the imprinting limit in the film movement direction.

(Effects of the Invention) As described above, according to the present invention, data related to photography is copied at the frame interval between the film screen that has been photographed and the film screen that is to be photographed next in conjunction with film winding. In the data imprinting device of a camera that is used for printing, the frame spacing is made variable according to the data length in the film winding direction of the imprinting data inputted by the data input means, so that the frame spacing at which data is imprinted is not limited. Therefore, the amount of data that can be imprinted can be greatly increased, and the characters of the imprint data can be made larger, making it easier to see.Furthermore, the data can be imprinted outside the film screen, so The imprinted data will not be difficult to read due to the influence of the background.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing the imprinting process according to the embodiment of FIG. 1, and FIG. It is an explanatory diagram. 1: Data input section 2: Microcomputer 3: Data display section 4: Data imprint section 5: Film winding section 6: Winding detection section 7: Release section 8: Exposure control section 9: Film 31, 32, 33: Film screen 41, '42, 43: Piece spacing

Claims (1)

[Claims] A data imprinting device for a camera that imprints data related to photography in conjunction with film winding at the frame interval between a film screen that has been photographed and a film screen that is to be photographed next. A data imprinting device for a camera, comprising a frame interval variable means for varying the frame interval in accordance with a data length in a film winding direction of imprint data inputted by an input means.