JPS63165836A - Data imprinting device for camera - Google Patents

Abstract

PURPOSE:To miniaturize a projecting part for data imprinting by providing the titled device with an imprinting circuit for imprinting data horizontally when a camera is set up horizontally and imprinting data vertically at the time of setting up the camera vertically. CONSTITUTION:When the camera is set up vertically, a switch 3 is turned on and a signal through the switch 3 is inputted to a decoder 13 to switch an address in the decoder 3. The data are divided into proper digits for 'year', 'month' and 'day' and these data are imprinted as horizontally written vertical arrangement. If data expressing 'year' 'month' and 'day' are stored in the decoder 13 as data for a vertical position and a horizontal position, the vertical or horizontal position can be automatically switched by switching the switch 3. Consequently, the data are imprinted as horizontal writing arrangement when the camera is set u in the horizontal position, and as the vertical writing arrangement when the camera is in the vertical position, so that all the data can be imprinted by the small number of projectors (LEDa-LEDj).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data imprinting device for a camera.

(Prior Art) Various data imprinting devices for cameras that imprint data related to photography onto film have been proposed or implemented.

For example, in 1986, the special public interest was developed to ensure that data characters were properly imprinted on the subject being photographed on film.
There is a publication No. 22288.

The technology disclosed in the publication uses two display elements,
The two display elements are used differently depending on whether the camera is held in a horizontal or vertical position to display appropriate data.

This situation is shown in FIGS. 5(a) and 5(b).

FIG. 5(a) shows the appearance of data characters when the camera is held in the horizontal position. FIG. 5(b) shows the camera held in the vertical position.

However, in this device, a display element for the horizontal position and a display element for the vertical position were provided separately, so there were problems in that the device became large and the cost increased.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned conventional problems, and the light projection unit for data imprinting is driven in synchronization with the film travel, so that the imprint data is sequentially formed in the film travel direction. In a device for imprinting data of a camera that records images while being moved, there is a detection means for detecting whether the camera is in a horizontal position or a vertical position, and the detection means detects the horizontal position. A projection circuit for imprinting data is provided, which imprints data in a horizontal writing arrangement in response to the above-mentioned detection, and imprints data in a vertical writing arrangement in response to detecting the vertical position. The purpose of the present invention is to provide a data imprinting device for a camera that is miniaturized.

[Embodiments of the invention]

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

FIG. 1(a) is an example of a photograph taken in a vertical position with a camera having a data imprinting device according to the present invention.

The data corresponding to September 9, 2017 as imprint data is grouped into each block, and is imprinted vertically in units of 1 year, month, and day. .

FIG. 1(b) is an example of the photograph taken in the horizontal position.

The data corresponding to January 0, 2017 is imprinted in a row horizontally, in other words, in horizontal writing, just like when taken with a general data imprinting camera.

FIG. 1C shows the arrangement of a light emitting element as a light projection section of a camera having a data imprinting device with respect to a photographing screen. In this embodiment, in order to further downsize the imprinting device, each light-emitting element is turned on and blinks in synchronization with the winding or rewinding of the film, and only 9 light-emitting elements are required to achieve an appropriate image. Data imprinting is possible.

Reference numeral 100 denotes a photographing screen, and numerals a to i denote light emitting elements serving as light projection units arranged in a line at appropriate positions in the vertical direction within the photographing screen. For example, in the case of vertical photographing as shown in FIG. 1(a), In the case of horizontal position photography as shown in Fig. 1(b), the light emitting elements a to g are selected and emitted to imprint the characters corresponding to the respective photographic positions. There's a row.

FIG. 2 is a circuit diagram of the data imprinting device shown in FIG. 1, in which 1 is a camera release switch, 4 is a known exposure control circuit, 5 is a winding control circuit,
6 is also a known timing circuit, 2 is a switch that turns on and off in synchronization with the rotation of the sprocket, FF is a buffer, 8 is a D-type flip-flop, 9 is an AND gate, 10 is an oscillator, 11 is a counter, and 12 is a latch. The circuit, 13 is a decoder, a to i are for dot imprinting in Figure 1 (e
), 23 to 31 are transistors that selectively turn on and off the LEDs according to the output of the decoder, and 32 to 40 each have one end connected to the L
ED.

This is a resistor for limiting the current flowing through the LED, the other end of which is connected to a power source.

Next, the operation of the above circuit will be explained.

When you press the shutter button (not shown), release switch 1
is turned on, the exposure control circuit 4 is activated using this as a trigger, and photographing is performed in a known sequence. When the photographing is completed, the winding control circuit 5 is activated to feed the photographed film.

Next, the imprinting operation will be described.

When a series of exposure control sequences are completed, an "H" signal is manually inputted from the exposure control circuit 4 to the latch terminal of the latch circuit 12 receiving the information from the clock circuit 6, and the information immediately before the start of winding is latched. do. This is to prevent the imprint information from being changed due to a change in time, for example, during winding. According to the output of the latch circuit 12, the decoder 13 converts the imprint information into data to be imprinted.

When winding of the film is started, a sprocket (not shown) rotates as the film moves, and in synchronization with this rotation, the switch 2 repeats on and off to generate pulses. The pulse signal from this switch 2 is passed through a buffer 7 to a one-shot circuit consisting of a D-type flip-flop 8 and an AND gate 9 to remove chattering, and then a counter 11 counts the number of pulses.

The counter 11 sends its output in parallel to the decoder 13
The decoder 13 outputs a signal as shown in FIG. 3(A) in accordance with the input, for example, in the case of horizontal position photography.

Here, the numbers 1 to 29 written in the upper horizontal row are the contents of the counter that counted the pulses generated in synchronization with the rotation of the sprocket, and correspond to the address of the decoder 13, and the alphabet fi Ng in the vertical row is the LEDaNi
The black circles indicate the LEDs that light up when corresponding to each address.The output of the decoder 13 at this time is 1.
When expressed in hexadecimal notation, it looks like the three-letter number shown at the bottom.

According to the output signal of the decoder as described above, when the switching transistors 23 to 31 correspond to address 1, for example, transistors 24, 25, 29 are turned on, other transistors are turned off, and LEDs 15, 16, 20 are turned on. Turn off the others.

In this way, in synchronization with the rotation of the sprocket, data is imprinted by appropriately turning on and off the LEDs at timings corresponding to the respective addresses.

FIG. 4 shows this timing chart, and each time a pulse synchronized with the rotation of the sprocket during film exposure is generated, an appropriately selected one of the LEDs arranged in a row lights up, and data imprinting is performed.

In the Ifi2 diagram, switch 3 is a switch that detects whether the camera is in the vertical or horizontal position, and a mercury switch or the like is suitable.

When the camera is in the vertical position, the switch 3 is turned on and this signal is input to the decoder 13, which switches the address in the decoder and converts the data to an appropriate digit such as January 0, 2017, as shown in Figure 3 (B). Imprint them all together so that they are laid out horizontally in a vertical layout. If this is shown on the shooting screen, it will be as shown in Figure 1 (a), that is, ``85'' for ``1 year'', ``12'' for January, and ``25'' for 1st, respectively. If you have it in the decoder as data for vertical position and horizontal position,
For example, the most significant bit of the address of the decoder 13 can be automatically switched between "1" and "0" by switching the switch 3.

As a result of the above, when the camera is in the horizontal position, the data will be imprinted in a horizontal writing arrangement, and when the camera is in the vertical position, the data will be imprinted in the vertical writing arrangement. All data can be imprinted using the light projection unit.

It goes without saying that the imprint data to which the present invention is applied is not limited to that of the above embodiments, but may be of any type.

(Effects of the Invention) As explained above, according to the present invention, the light projection unit for data imprinting is driven in synchronization with the film travel, so that the imprint data is sequentially formed in the film travel direction and the data is imprinted. In the data imprinting device of the camera that is being installed, there is a detection means for detecting whether the camera is in the horizontal position or the vertical position, and a sensor that responds to the detection of the horizontal position by the detection means. This type of data imprinting is equipped with an imprinting circuit that imprints data in a horizontal writing arrangement and also imprints data in a vertical writing arrangement in response to detecting the vertical position. Since the light projection section for data imprinting in the apparatus can be made extremely small, the effect in terms of space and cost is extremely high.

[Brief explanation of the drawing]

FIG. 1(a) is a schematic diagram of a camera having a data imprinting device according to the present invention in a vertical position; FIG. 1(b) is a schematic diagram of a camera in a horizontal position; FIG. 1(C) is a diagram showing the arrangement of light emitting elements of the data imprinting device according to the present invention, FIG. 2 is a circuit diagram of the data imprinting device of FIG. 1, and FIG. 3 is a decoder in FIG. 2. Fig. 4 is a timing chart of the data imprinting device shown in Fig. 2, and Fig. 5(a) is a diagram showing the timing chart of the data imprinting device shown in Fig. 2. FIG. 5(b) is an explanatory diagram showing the arrangement of light emitting elements of the data imprinting device of FIG. 5(a). 1... Release switch, 2... Switch that synchronizes with the rotation of the sprocket, 3...
... Vertical and horizontal position detection switch, 4... Exposure control circuit, 5... Winding control circuit, 6... Timing circuit, 7... Buffer, 8... D-type flip-flop, 9... - AND gate, 10 oscillator, 11... counter, 12... latch circuit, 13... decoder, 14-22... LED. 23-31...Transistor, 32-40...Resistor.

Claims (1)

[Claims] In the data imprinting device of the camera, the light projection unit for data imprinting is driven in synchronization with the running of the film, so that imprint data is sequentially formed and imprinted in the film running direction. a detection means for detecting whether it is in a horizontal position or a vertical position; and in response to the detection of the horizontal position, the detection means imprints data in a horizontal writing arrangement, and also detects the vertical position. 1. A data imprinting device for a camera, comprising an imprinting circuit that imprints data in a vertically written arrangement in response to a data imprinting operation.