JPH06110118A - Method for recording additional information to photographic film, camera provided with additional information recording function and laboratory system using the additional information - Google Patents

Abstract

PURPOSE:To improve the degree of freedom of a camera design and to make equipment compact and inexpensive by eliminating a restriction caused by the position of an object frame in the recording position of magnetic information and recording the magnetic information at an arbitrary position. CONSTITUTION:When an image region (frame) 3 has breadth L1, the record starting positions of bits of magnetic recording information 4a-4c are shifted to the left by L1/2 with respect to the image region (frame) 3. In other words, magnetic recording is started from the central part of the object frame (bits of information corresponding to the frames A, B and C are 4a, 4b and 4c, respectively) At this time. an information recording space is secured in a horizontal direction through the use of intervals among respective frames, so that recording length can be made long. Moreover, in the post signal processing, a start signal 5 or a completion signal 6 as a discrimination signal is recorded on the magnetic recording information. The contents of the start/completion signals 5 and 6 are the information for showing a recording track number and the starting/completing positions of the track, as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recording additional information on a photographic film, a camera having a function of recording additional information, and a laboratory system utilizing the additional information.

[0002]

2. Description of the Related Art In recent years, the importance of a silver salt film as a multi-recording medium has been pointed out, and a film capable of writing information on a transparent magnetic material by magnetic recording has been proposed (for example, a special table). Flat 4-50101
6).

[0003]

The present inventor has conducted various studies on techniques for recording information on a photographic film having a transparent magnetic material as shown in FIG. 6, and as a result, in the example of FIG. The position of the head with respect to the captured image area (frame) inside is restricted, which reduces the degree of freedom in camera design.
Since a very strict correspondence between frames and information is required, it has been found that there are problems such as impeding the compactness of the camera and increasing the cost as the design accuracy is improved.

That is, the film of FIG. 6 is the film 1
1 is a 35 mm film having an emulsion 10 and a transparent magnetic layer 12 on the front and back sides, respectively, and as shown in the figure, the range within the width of the image area (frame) 3 is the recording area (of the additional information of that frame). In the figure, in the case of this example, strip-shaped magnetic recording portions 4a and 4b are provided above and below the frame.

In this film, since the magnetic recording information start / end positions are near the right and left ends of the image area 3,
When performing sequential recording for each frame, it is necessary to place a magnetic recording head near the film winding axis. At this time, the magnetic recording head picks up noise from the winding motor, resulting in an S / N ratio. Getting worse.

Further, if the recording position of the magnetic information is outside the width of the target frame, in the case of printing using the recorded magnetic information in a lab system or the like, it is out of the standard and accurate reading is not possible. become unable. In order to prevent such a situation from occurring, extremely strict mechanical control is required at the time of photographing with a camera, which causes problems such as an increase in size of hardware and an increase in cost.

The present invention has been made on the basis of the results of the study by the present inventor. The purpose of the present invention is to improve the degree of freedom in designing a camera device, and to remove restrictions as much as possible. It is to promote compactness and cost reduction.

[0008]

[Means for Solving the Problems]

(1) In the method of recording additional information on a photographic film of the present invention, basically, the magnetic information recording position can be recorded at an arbitrary position without the restriction of the position of the target frame. To do. Correspondence between recorded information and frames
The determination is made using the identification information included in the record information. (2) As a preferable mode, a 35 mm single perforation type film is used, and the additional information is
In the portion on the opposite side of the perforation across the shooting screen area, the recording is not limited to the area of the frame width of the target frame. (3) As a preferable mode, the recording of the additional information is started from the center position of the target frame. (4) A preferred form of the camera has a magnetic recording head and a film winding mechanism, and when the film is wound by the winding mechanism to the photographing position, the side having the perforation across the photographing screen area is provided. The magnetic recording head is positioned at the center of the target frame on the opposite side. (5) A preferred form of the lab system is a frame position detecting means in a photographic film, a recording position detecting means of a start signal or an end signal of additional information, a detection by the frame position detecting means and a start signal of the additional information. Alternatively, there is provided a photographic processing means for associating the additional information with the corresponding frame based on the detection of the end signal by the recording position detecting means and performing a process such as printing using the additional information.

[0009]

[Action]

(1) The recording position of the additional information becomes free from the position of the frame, and the degree of freedom in information recording is improved. Further, it becomes possible to secure a recording area having a frame width or more. (2) The single perforation is used for frame position determination, and the additional information is recorded at the portion opposite to the perforation by freely using the extension direction of the frame width (longitudinal direction of the film). Information can be recorded beyond the end position of the corresponding frame, and the degree of freedom in recording information is great. (3) By placing the magnetic head at the central portion of the frame, a space as much as possible is provided between the film winding motor and the magnetic head to make it difficult to pick up noise. (4) In order to achieve the form (3), the fixed magnetic head position in the camera is defined in association with the photographing position. (5) The laboratory system determines the frame for which the magnetic information is based on the identification information (start signal / end signal) in the magnetic information, and controls the printing using the magnetic information (single signal). It is possible to perform a predetermined enlargement of a film photographed by a focus camera, etc.) and to output to another device according to the magnetic information (display on a display, output of hard copy, etc.).

[0010]

Embodiments of the present invention will now be described with reference to the drawings. (1) Basic mode of information recording method on photographic film having transparent magnetic layer (FIG. 2) The recording area of magnetic information on the photographic film is basically the shaded area in FIG. Reference number 20),
The degree of freedom is secured without being restricted by the position of the image area (frame) 3.

FIG. 2A shows that, in principle, the additional information for the frame B can be recorded over the entire area of the film. Further, FIG. 2A shows that the additional information for the frame B can be freely recorded by utilizing the spread in the frame width direction of the upper and lower portions of the image area.

(2) Embodiment of method for recording information on photographic film having transparent magnetic layer (FIG. 1) The example of FIG. 1 is a single perforation type 35 mm having one perforation per frame per side.
In the empty area under the film, prewind method 1
The shooting information and the like are recorded for each frame.

The 35 mm film, as shown,
It has a three-layer structure in which an emulsion 10 and a transparent magnetic layer 12 are provided on the front and back of the film 11. The width of the image area (frame) 3 is L1
In this case, the recording start position of the magnetic recording transfer information 4 (4a to 4c) is L to the left with respect to the image area (frame) 3.
It is shifted by 1/2. That is, magnetic recording is started from the central portion of the target frame (in the figure, the information corresponding to the frames A, B, and C is 4a, 4b, and 4c, respectively). In this case, since the information recording space is secured in the lateral direction by utilizing the interval between each frame, the recording length should be set longer than the case where the frame width is limited as in the conventional example of FIG. You can

Further, in the later signal processing, a start signal 5 or an end signal 6 as an identification signal is recorded in the magnetic recording information so that the magnetic recording information can be linked to the target frame. The contents of the start / end signals 5 and 6 are, for example, information indicating the recording track number and the start / end position of the track. In the lab system,
For example, the perforations are optically read to determine the frame position, while the magnetic recording information position is recognized by using the start / end signal 5.6 as a clue to reproduce the information, and the information of the start / end signal 5.6 is read. The target frame is further discriminated, magnetic information is combined with the frame, and processing according to the magnetic information is performed.

(3) Configuration example of camera having magnetic information recording function (FIGS. 3 and 4) FIG. 3 schematically shows the appearance of the camera. Characteristic parts are to have a recorded information automatic setting button 34, a recorded information manual input button 35, and a liquid crystal display panel 40 that functions to display the manually input information for confirmation. The recording information automatic setting button 34 is a button for selecting a mode for automatically magnetically recording the photographing information (weather, illuminance, etc.) of a predetermined item, and the manual input button 35 is for inputting information that the photographer wants to record. This is a button for selecting the input mode and inputting information by yourself. Reference numeral 41 is a release button, and reference numeral 4
2 is a taking lens.

FIG. 4 is a diagram showing a part of the internal structure of the camera of FIG. The film 1 having the three-layer structure described above is
It is sent out from the spool 31 and wound up by the winder 32. Since the magnetic recording head 33 records information from the center of the frame as shown in FIG. 1, it is fixed to the center (position of L1 / 2) of the image area (frame) at the photographing position. The emulsion is exposed to light through the lens 30.

The magnetic recording head 33 has a head drive mechanism 39.
Driven by an electric current, and its control is performed by the CPU 36.
Done by The CPU 36 performs a predetermined magnetic information recording process using the ROM 38 and the RAM 37 that store the program. Information (signals) designating mode selection by operating the automatic setting button 34 and the manual input button 35 shown in FIG. 3 are input to the CPU 36.

(4) Example of configuration of lab system (FIG. 5) The film having the transparent magnetic layer shown in FIG. 1 was used, and the film photographed by the camera shown in FIG. 3 (and FIG. 4) was developed and printed (printed). An example of the configuration of a minilab system that is automatically performed is shown in FIG.

The minilab system 51 includes a developing means 52.
And a printing means 62. The printing unit 62 includes the scanner 53, the correction circuit 54, and the printing unit 5.
5, discharge means 56. The scanner 53 is basically a computer, and decoding of magnetic information and combining with a frame are performed in this part.

The determination of the position of the frame in this case is performed by, for example,
Optical reading of perforations, optical reading of a print signal on the film indicating the frame position, and reading of magnetic information indicating the frame position are performed. Further, the read information can be used as it is, or after being temporarily stored, it can be used by re-recording it on the same or another track while keeping the start position constant.

Next, the operation will be described. When the operator sets the cartridge 50, the film is sent to the developing means 52 and developed to form a negative film. The scanner 53 in the printing unit 62 scans the negative film and determines the characteristics of the image by determining the intensities of R (red), G (green), and B (blue). Further, the contents of the magnetic information are read to determine what kind of processing should be performed. This judgment result is sent to the correction circuit 54, and the correction circuit 54
Based on the information, a print condition adjustment signal is sent to the printing means 55. The printing means 55 performs exposure and printing according to the adjustment signal. At this time, a predetermined enlargement is performed according to the magnetic recording information, and a correction for accurately reproducing the color at the time of actual photographing is performed.

The printed printing paper 61 is ejected by the ejecting means 56.
Thus, the DP bag 60 is packed together with the negative film 70 and discharged. The negative film 70 is preferably cut leaving the magnetic information recording tracks so that the magnetic information can be reused.

Further, it is possible to instruct the output from another output device using the magnetic recording information. That is, the output of the scanner 53 can be sent to the external image processing device 57 to be hard-copied by the hard copy device 58 or displayed on the display device 59.

[0024]

As described above, according to the present invention, the following effects can be obtained. (1) The magnetic information can be recorded without being limited to the frame width of a photograph, and the restriction of the head position in the camera is eliminated as much as possible, so that the degree of freedom in the device design of the camera can be improved. . (2) By devising the position of the magnetic head, it is possible to make it difficult to pick up noise from the winder motor or the like, and improve the S / N ratio of magnetic recording. (3) Since device restrictions are removed as much as possible, it is possible to promote downsizing and cost reduction of the camera. (4) In the laboratory system, magnetic recording information can be handled without restriction from the captured video, and the design of the signal processing mechanism is advantageous. (5) By these, effective utilization of photographic film as a multi-information recording medium can be promoted.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an information recording method on a photographic film having a transparent magnetic layer of the present invention.

FIG. 2 is a diagram for explaining the basic mode of the method for recording information on a photographic film having a transparent magnetic layer according to the present invention. FIG. It shows that the entire area of the film can be recorded.
Indicates that the additional information for the frame B can be freely recorded by utilizing the spread in the frame width direction of the upper and lower portions of the image area.

FIG. 3 is a diagram showing an outline of an external appearance of a camera having a magnetic information recording function.

FIG. 4 is a diagram showing a configuration example of a main part of the camera of FIG.

FIG. 5 is a diagram showing a configuration example of a main part of Labosio stem.

FIG. 6 is a diagram for explaining a magnetic recording method on a photographic film, which was examined by the present inventor before the present invention.

[Explanation of symbols]

 1 35 mm film 2 Perforation 3 Image area 4 (4a, 4b, 4c) Magnetic recording information 5 Start signal 6 End signal 10 Emulsion 11 Film 12 Transparent magnetic layer

Claims (5)

[Claims] 1. A method for recording additional information on a photographic film for recording additional information in units of frames on a photographic film having a transparent magnetic layer, wherein the recording position of the additional information is an arbitrary position on the photographic film, A method of recording additional information on a photographic film, characterized in that the recorded information has recorded identification information for identifying the target frame. 2. The photographic film is a single perforation type film having one perforation on each side for each frame, and the additional information is a target frame in a portion on the opposite side of the perforation across the photographing screen area. The method for recording additional information on a photographic film according to claim 1, wherein the recording is performed without being limited to the area of the frame width. 3. The method of recording additional information on a photographic film as claimed in claim 2, wherein the recording of the additional information is started from the center position of the target frame. 4. A magnetic recording head for writing additional information on a film having a transparent magnetic layer, and a film winding mechanism, wherein when the film is wound by the winding mechanism and comes to a photographing position, A camera having an additional information recording function, characterized in that the magnetic recording head is located at the center of the target frame on the side opposite to the side with the perforations across the shooting screen area. . 5. A frame position detecting means in a photographic film, a recording position detecting means of a start signal or an end signal of additional information, a detection by the position detecting means of the frame, and a recording of the start signal or end signal of the additional information. A laboratory system using additional information, comprising: a photo processing unit that associates the additional information with a corresponding frame based on the detection by the position detection unit and performs a process such as printing using the additional information.