JPH058811B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for recording information on a film in a photographic camera, the information recording device comprising a light source positioned along a linear strip and a light source positioned on the film at an exposure position. a light source for activating the light source in such a manner and sequence as to cause the film to be optically exposed with information consisting of, for example, dots or dabs on the film as the film passes the light source by advancing to switch parts of the film; and an adjustment mechanism connected to the.

The use of small light sources such as light-emitting diodes to expose desired data in the form of alphanumeric characters on photographic film is described in DE-A-3031100.
While the film is advancing, it is possible to write letters in a continuous form along the film, for example by means of a row of seven diodes placed perpendicular to the direction of film advancement. Thus, seven diodes write characters along one edge of the film, with each column forming a 5 x 7 matrix.

On the other hand, if it is desired to write information across the width of the film perpendicular to the direction of film advancement, a large number of diodes are required, precisely at least five diodes for each character. . If the number of characters desired is large, for example 30 characters, 150 light emitting diodes will be required, which means that each individual diode takes very little current, but also many individual diodes can be lit simultaneously. You don't have to, but
This means that the instantaneous current consumption is not low, and in the case of a photographic camera is at least unacceptably high.

The above-mentioned problem is solved by the present invention, in which the light sources are arranged to write a series of letters perpendicular to the direction of film advancement in such a way that they are spaced individually or in groups. The light sources are arranged in strips on the desired path of the film perpendicular to the direction of film advancement, and each individual light source or each group of light sources is a light source adjustment mechanism disposed to displace the light sources and operate the light sources individually or in groups in a sequential order, extending at right angles to the film during advancement of the film when the individual light sources or the groups of light sources are activated; A separate light source or a group of light sources reach the area where the recording is to be made, and the string of characters to be recorded on the film as it advances is arranged in the area perpendicular to the direction of advancement. .

The present invention can also be used in a type of camera that allows for interchangeable magazines with different film speeds. In embodiments of the invention suitable for this purpose, the light source adjustment mechanism is arranged to sense the velocity of the film as it advances and to size the time intervals forming the sequential actuation sequence based thereon. It is set up. In some types of cameras, the film speed is not constant;
Changes during the transfer cycle. Embodiments of the invention that can be used in this case can be arranged to sense the change in speed and thereby change the temporal interval, introducing a time lag if necessary.

The arrangement of the present invention produces a line of characters running perpendicular to the direction of film advancement, while keeping maximum current consumption low.

Embodiments of the invention will now be described in detail with reference to the accompanying drawings.

As is clear from FIGS. 1 and 2, the object of the present invention is that when the image 3 is exposed, the photographic film 2 moves forward in the camera in the direction of the arrow, so that the character 1 is printed over the width of the photographic film 2. It consists in writing. The letter 1 is written in the form of a dot matrix of 5.times.7 points by a row 5 of small light-emitting diodes 6, which row 5 extends at an oblique angle across the film 2 at an angle α to its vertical direction.

A row 5 of light emitting diodes 6 is mounted inside a camera body 7 equipped with a motor 8 for winding the film 2 in its magazine (not shown). In the case shown in FIG. 3, the diodes 6 of the row 5 are arranged in groups 9 of five. Each group 9
The diodes belong to certain character positions and are arranged perpendicular to the film advance direction. The diode group 9 is similarly displaced in the direction of film advancement. To expose a line of characters on the path of the film passing through or on the film frame, as the film advances, the light-emitting diodes of group 9 are activated first, and the light beams of the other groups 9 are activated subsequently. Requires light emitting diode. The group 9 of light emitting diodes is operated continuously in such a way that as the film is fed forward, a line of characters perpendicular to the direction of film advancement is exposed. Group 9
The displacement distance between is shown enlarged in the drawing for clarity. Control of the diodes is provided by the previously described electronic control mechanism (not shown) which controls the light emitting diodes with respect to the rate of film advancement. If the advance speed of the film is not kept constant as it advances, but is varied, the electronic control mechanism senses this through some kind of sensing device of the type mentioned above, and changes the control sequence for the light emitting diode. The time interval shall be selected.

In the embodiment shown in FIGS. 2 and 3, the light emitting diodes are displaced in groups in the direction of film advancement by an amount of advancement specified for each group 9.
As a variant, each light-emitting diode can be displaced in the forward direction by one step, which is specified for each separate light-emitting diode which together form one inclined row 5.

whether the angle α has to be placed before or after the imaginary line perpendicular to the direction of advancement (see reference numeral 10 in FIG. 3) and whether the strips of row 5 have to be inclined forward or backward in the direction of advancement; It depends on the order in which it is proposed to operate the light emitting diode. In the case of the embodiment shown in FIG. 3 (see arrow used to indicate forward direction), it is the right-most group 9 that is actuated first, followed by the next left-most group 9. Operated sequentially. If the operating configuration has to be reversed, the strips of the row 5 are tilted in the opposite direction, so that the angle α is located opposite the imaginary line 10.

In the case of other control types other than operating the light emitting diodes sequentially from one end of the film to the other, e.g. from the ends of the strips of the row 5 towards the center or vice versa from the center towards the ends. When actuating the strips of piece 5, the strips of row 5 can have other shapes than slanted straight lines. In the case of the operating configuration from both ends toward the center, the shape is V-shaped.

The method of positioning the light emitting diodes determines the number of light emitting diodes that must be operated simultaneously. In the case of individually moving light-emitting diodes, they are activated one by one in sequential order.

In the embodiment according to FIGS. 2 and 3 each group 9
of light emitting diodes are activated at the same time. Then the next group 9 of light emitting diodes is activated,
And it will be continued one after another. If maximum current consumption is accepted, multiple groups of light emitting diodes can be positioned along a line perpendicular to the direction of film advancement. These groups of light-emitting diodes must of course be operated simultaneously.
Alternatively to the method in which each group is activated simultaneously, it is also possible to activate only the light emitting diodes in each group that are part of the exposed character separately.

The method of operating the light emitting diode and the positioning of the light emitting diode depend on the requirements and factors of keeping instantaneous current consumption low, and the speed of the film is also an important consideration.

The invention is not limited to the embodiments described and illustrated above, but various modifications are possible within the scope of the claims. Instead of a dotted display, a 7 sector or 15 sector type display can be used, for example. The rows of light emitting diodes can be positioned so that the characters appear on the screen, rather than on one side of the image, and so that multiple rows of characters can be written. It is important to position the character rows perpendicularly to the film at an angle for special purposes by appropriate adjustment. In embodiments with space for long characters, the forward feeding of the film does not end once the advance of the video frame is complete, but continues until the text information is written, which remains behind the video frame. This means that the attached film strip can be filled with letters. The invention works equally well with film in sheet form or in roll form. The group of light emitting diodes can be formed from a modular type so that they can be easily replaced. The array of diodes can also be arranged within the film magazine.

Alternatively, the array of light emitting diodes can be arranged on a metal arm which is passed through to secure the film before it is wound.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a perspective view of a film contained in a camera and freely drawn out into the atmosphere, and Figure 2 is a camera equipped with a device according to the present invention. FIG. 3 is a partially enlarged front view of the film showing the displacement angle between the light emitting diodes. 1... Characters, 2... Photographic film, 3... Video, 5... Row of light emitting diodes, 6... Light emitting diodes, 7... Camera body, 8... Motor, 9... Line of light emitting diodes. group.

Claims (1)

[Claims] 1. A light source positioned along a linear strip;
an adjustment mechanism coupled to the light source for activating the light source so that advancement of the film optically exposes information on the film past the light source;
Light sources are arranged at regular intervals on the strip, either individually or in groups, so that a line of characters can be written perpendicular to the film advance direction, and the light sources make an angle α≠0 with respect to an imaginary line perpendicular to the film advance direction. A light source adjustment mechanism is arranged to displace the individual light sources or between each group of light sources so that the light sources are actuated individually or in groups in a sequential order, such that the film advances when the light sources are actuated. A film for a photographic camera, characterized in that a recording area extending in a straight line with the film reaches its light source, and a string of characters to be recorded on the film as the film advances is arranged within the area. A device that records information on. 2. Device according to claim 1, characterized in that the light source strip is constituted by a linear section having an angle .alpha. to an imaginary line in the film advancement direction. 3. The light source adjustment mechanism is arranged to sense the speed of the film as it advances and, based thereon, to determine the size of the time interval forming the continuous operating sequence. Apparatus according to scope 1 or 2. 4. The light source adjustment mechanism is arranged to sense changes in speed and thereby change the time interval, introducing a time lag if necessary. The device described in. 5. An apparatus according to any one of the preceding claims, characterized in that the film advancement mechanism is controlled by a light source adjustment mechanism so that the film continues to advance until space is provided for all of the information.