JPS6156495B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a camera that imprints characters, symbols, etc. on a film, and in conjunction with the film winding operation of the camera, characters, numbers, symbols, etc. are printed in a dot matrix by blinking a plurality of point light sources. This invention relates to a camera equipped with a device that makes an impression on the film surface.

In conventional cameras with a built-in or attachable data imprinting device, the numbers and symbols to be imprinted are formed in a solid pattern, the desired data is created by selecting a dial from outside the camera, and this is photographed using light emitted from a small light source. At the same time, there were many things that were imprinted on the film surface. The number of imprint patterns in this type of camera is selected by a dial provided separately for each digit, so there are only a limited number of them, and in particular, it is possible to freely compose and imprint words using alphabets, kana characters, etc. This was inconvenient because the device became complicated. On the other hand, a method has been proposed in which a plurality of light sources, such as light emitting diodes, are arranged to form an arbitrary character or number pattern, and the patterns are selectively emitted electronically to effect imprinting.

The present invention uses a dot light source array in which a plurality of light emitting elements are arranged in a row to imprint data during film feeding, thereby making it possible to imprint data using the electronic circuit using a small number of light emitting elements. At the same time, in order to eliminate problems that occur when data is imprinted when the film is fed using the dot light source array, it is detected whether or not the film has been fed a predetermined amount, and the light source array is activated every time the film is fed a predetermined amount. The dot light source array is driven and the light source array is arranged at an angle, making it possible to imprint high-quality characters and numbers using the dot light source array.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an imprinting system for a data imprinting camera according to the present invention. In the figure, numeral 1 is a data input section where symbols to be imprinted such as alphanumeric characters and numbers are specified and set using keys or rotary switches. Reference numeral 2 denotes a signal conversion unit, which includes a decoder and the like that converts the signal from each key of 1 into a binary code signal. Reference numeral 3 denotes a storage section, which is composed of a left register and the like for storing the binary digital signal from the signal conversion section 2. Reference numeral 4 denotes a film winding section, which includes a mechanism such as a sprocket gear that winds up the film in response to a winding operation by a winding lever (not shown) or the like. Reference numeral 5 denotes a winding detection section which generates a pulse signal in synchronization with the rotational speed of the winding section 4. Reference numeral 6 denotes an output control section which sequentially reads out the contents of the above-mentioned imprint data storage section 3 in response to pulses from the winding detection section 5 and converts them into a predetermined several-bit signal (for example, a 7-bit signal). It is equipped with an imprint signal generator, etc. for output. 7 is a light emitting section with multiple lights arranged in a row.
It is composed of LEDs, etc., and the light emitted from it is given directivity and spotting by a light guide section composed of a lens or an optical fiber cable, and is guided to the film surface. 8 is a photographing lens, and 9 is a film.

FIG. 2 is a schematic diagram showing one embodiment of the winding detection section 5 in FIG. 1. 101 in FIG. 2A is a second rotating part that rotates in conjunction with the winding gear 4;
A plurality of slit holes 102 are arranged concentrically around the rotating shaft. FIG. 2B shows a light source 10 constituting a photo coupler disposed on both sides of the second rotating section 101 across the slit hole.
3 and a light receiving element 104 are shown, and the rotating part 10
1, the light receiving element outputs a pulse signal 105 as shown. FIG. 2C shows the detection signal generation circuit 106, which includes a one-shot circuit, a time constant generation circuit, and a gate circuit for making the pulse width of the pulse signal 105 from the light-receiving element shown in FIG. 2B constant according to the sensitivity of the film. It is composed of etc.
The output pulse 107 from this circuit has a waveform as shown.

FIG. 3 is a circuit connection diagram showing one embodiment of the storage section 3 and output control section 6 in FIG. 1. In the figure, S ₁ to S ₇ are shift registers that store imprint data, and G ₁ to G ₇ are respective outputs of the shift registers S ₁ to _{S 7} and a detection signal generator 106 shown in the second diagram.
is an AND gate that takes the AND of the signals from
On the other hand, in response to the high level of the output of 106, a shift pulse for shifting the shift registers S ₁ -S ₇ to the right by 1 bit is applied to the shift registers S ₁ -S ₇ as shown. The figure shows a state in which "1" is stored in each shift register corresponding to the dot emitted by the element of the light emitting section. Gate G ₁ in Figure 3
The outputs of ~ _G7 are applied to each LED of the light emitting section 7 in FIG. 1, respectively.

FIG. 4 is a schematic diagram showing the configuration near the opening window in one embodiment of the data imprinting camera according to the present invention, and shows a state in which the back cover of the camera is opened. In the figure, 201 is a camera body, 202 is an opening window,
Reference numeral 204 denotes light emitting elements, which are arranged in a line at a certain angle to one side of the aperture window. The arrow indicates the film winding direction. By arranging the light emitting element rows with a slight inclination as shown in the figure, the imprinted characters can be made into easy-to-read fonts. FIG. 5 is a diagram showing an example of photographic drawing using the camera of the present invention.
-9, TOKYO" dot pattern is the data imprinted by the data imprinting device of the present invention.

Next, the operation of imprinting desired data on a photograph using the data imprinting apparatus of the present invention will be explained. First, desired data, such as "78-9, TOKYO" in FIG. 5, is set by operating the keys or rotary switch of the data input section 1 shown in FIG.
A subject is exposed onto a film 9 using a lens 8, and before the film is wound up, the data is stored in shift registers _S1 to _S7 of a storage section by operating a button or the like. Note that this storage operation may be performed before exposing the film. Next, the camera's winding mechanism winds the film at the end of the photograph.
This film winding is transmitted from the sprocket 4 to the second rotating section 101 of the winding detection section, and the light from the light source 103 is received by the light receiving element 104 through the slit 102 of the second rotating section, and a pulse 105 is generated at its output. . This pulse is controlled by a one shot circuit or the like of the output control section 6 to have a pulse width depending on the film sensitivity, etc., and is inputted to gates _G1 to _G7 in FIG. Further, a signal from the output control section is applied as a shift pulse to the shift registers _S1 to _S7 , and the contents of the registers are shifted to the right and taken out.
In this way, the position of the imprint light emitting elements arranged in a line at appropriate positions of one frame of the film taken is scanned in the winding direction, and at this time, dots of light are sequentially emitted according to the data retrieved from the register. Imprint dot matrix data on the surface. The data imprinted in this manner is printed together with the negative image by developing the film.

As described above, in the data imprinting camera of the present invention, the date and other arbitrary information can be imprinted very easily, and the data can be entered into the device either before taking a picture or before winding up the number of shots. It is also possible to input desired data such as letters, numbers, and symbols using a dot matrix. Recently, there are devices that automatically set the date using a digital clock device, etc., but by incorporating this device, the date etc. can be automatically stored in the shift register at the moment of shutter release, and this can be imprinted when winding. This can be easily achieved using the apparatus of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the imprinting system of the data imprinting camera according to the present invention, FIG. 2 is a schematic diagram showing an embodiment of the winding detection section in FIG. 1, and FIG. 3 is the memory in FIG. 1. FIG. 4 is a schematic diagram showing the configuration near the aperture window in an embodiment of the data imprinting camera according to the present invention, and FIG. 5 is a circuit connection diagram showing an embodiment of the output control section. It is a figure showing an example of photograph drawing by. 1...Data input section, 2...Signal conversion section, 3...
... Storage section, 4 ... Film winding section, 5 ... Winding detection section, 6 ... Output control section, 7 ... Light emitting section, 8
... Photographing lens, 9 ... Film, 101 ... Second rotating section, 102 ... Slit hole, 103 ... Light source, 104 ... Light emitting element, 106 ... Detection signal generation circuit.

Claims (1)

[Claims] 1. A signal converter that encodes data in photography into multiple lines of code data consisting of multiple bits, a storage circuit that has multiple lines of memory that stores data from the signal converter for each line, and a film feeder. a film feed detection unit that detects a film feed operation and outputs a detection signal every time a predetermined amount of film is fed; a dot light source array that includes a plurality of light emitting elements in a row; and a dot light source array that is synchronized with the detection signal. and an output control section that sequentially reads the data stored in the plurality of rows of storage section one bit at a time for each digit and simultaneously transmits the data to each light emitting element of the dot light source array and lights up the light emitting element according to the read data. In addition, the dot light source array is placed at a position near the aperture window which is parallel to the film feeding direction from the photographing aperture window of the camera, and at a side of the aperture window in a direction perpendicular to the film feeding direction. A data imprinting device for a camera, characterized in that the data imprinting device is arranged in a line at a position within a range and inclined at a predetermined angle with respect to an axis perpendicular to a film feeding direction.