JP3289997B2 - Camera magnetic recording method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates are those which relate to magnetic recording scheme of a camera to record the photographic film as Daseru reliably read the captured data.

[0002]

2. Description of the Related Art A system in which a magnetic recording layer is provided on a photographic film and this magnetic recording layer can be appropriately used by a film maker, a camera user, and a print trader is known from International Publication WO90 / 04214. Have been. As data to be recorded on the magnetic recording layer by the camera, there are basic data such as photographing date and time data, photographed data indicating whether or not the frame is photographed, and trimming data indicating a trimming range at the time of print processing. These data are recorded for each frame by a magnetic head built in the camera when one frame of the film is fed after photographing. These basic data are read by a dedicated reproducing head provided in the photographic printer, and can be effectively used when performing a printing process.

[0003] The basic data as described above is an important factor that contributes to the efficiency and automation of the printing process. However, it has been studied from the user side that the magnetic recording system can be used more actively. I have. For example, in addition to photographing data for each frame such as shutter speed data, aperture value data, color temperature data, photographing distance data, etc., character data representing the photographing location and the title of the photograph are magnetically recorded as additional data on the photograph film. If this is the case, it will be possible to perform various services that were not possible before in the photo print processing.

As described above, when magnetic recording is to be performed on a photographic film including not only basic data but also additional data,
Since the amount of data becomes enormous, it becomes difficult to write on one recording track within the length range of one frame of the film.
Therefore, it is necessary to use a plurality of recording tracks,
The camera requires at least two magnetic heads in the film width direction. In order for these data to be correctly read by the reproducing head of the photographic printer, the width of the magnetic recording layer that can be used by the camera is determined in advance within a certain range. Recording must be performed so that two or more recording tracks fit correctly.

However, when the film is fed, the photographic film is often sent while meandering in the width direction, so that the recording track also meanders. Therefore, even if the recording track falls within the above-mentioned allowable recording width, there is a risk that data cannot be accurately read from such a recording track by a stationary reproduction head provided in the printer. large. Such a disadvantage can be solved by a camera having a mechanism for moving a magnetic head following the meandering of a photographic film, as known from International Publication WO90 / 06536.

[0006]

The follow-up type magnetic head described above moves the magnetic head while following the fluctuation of the film edge when the film is fed. However, such a mechanism is expensive, and is expensive for a high-end camera. Even if it can be incorporated, it is difficult to incorporate it into popular low-cost cameras. Further, the low-cost camera does not require the function of recording the additional data described above, and it is difficult to incorporate such a function in terms of cost. Therefore, even if the low-cost camera records only the basic data as one recording track, the meandering of the recording track is not improved, so that accurate data reading cannot still be guaranteed.

On the other hand, in a high-end camera, since a recording track without meandering can be obtained by the above-described tracking magnetic head or the like, it is necessary to divide both basic data and additional data into a plurality of recording tracks within the allowable recording width. Can be
If the basic data and the additional data are mixedly recorded on a plurality of recording tracks, it is necessary to determine the type of data after reading the data with the reproducing head of the printer. And
Considering that the film used for both high-end and low-cost cameras is supplied to the printer,
The above-described data type determination processing may unnecessarily complicate the print processing.

The present invention has been made in view of the above background, and is based on the premise that both a high-end camera incorporating a plurality of magnetic heads and a low-cost camera incorporating a single magnetic head coexist. even data recorded in any one, and an object thereof is to provide a magnetic recording scheme of the camera that enables accurate and simple read by the reproducing head.

[0009]

According to a first aspect of the present invention, there is provided a magnetic recording system for a camera, wherein a film width at the time of recording with a magnetic head is independent of the number of magnetic heads built in the camera. When a magnetic recording is performed with a camera having one magnetic head built therein, a single recording track is formed within the recording allowable width, and a plurality of magnetic recording heads are formed. when the magnetic recording with a camera with a built-in head, as well as permits to form recording tracks of several double the allowable recording in width, before
Any one of the multiple recording tracks is specified
As the recording track, the specific recording track is
Formed in the area where one recording track is to be formed,
Magnetic recording with a camera with a built-in magnetic head
Recording track data and a card with one built-in magnetic head.
Magnetic recording with the camera
It is a common type .

According to the magnetic recording method of the camera described in claim 2 ,
Performs magnetic recording with a camera with multiple built-in magnetic heads
When making certain recording tracks wider than other recording tracks
It is widely formed . Further, according to claim 3, wherein the camera
In the magnetic recording system, magnetism corresponding to the specific recording track
When recording with only the magnetic head, a single recording track
Along with the data with common types, the specific recording
No data is recorded on other recording tracks except for tracks
Is recorded on the specific recording track.
Things .

[0011]

FIG. 2 shows the structure of a camera incorporating a magnetic recording device having one magnetic head . A transparent magnetic recording layer is formed on the entire surface of the photographic film 3 exposed by the photographing lens 2, and a recording head (magnetic head) for writing photographing data to the magnetic recording layer is formed on a lower edge thereof.
4 are arranged. At the upper edge of the photo film 3, there are arranged photo sensors 6 for photoelectrically detecting the perforations 5a and 5b and transmitting detection signals to a CPU 7 for controlling the camera. The direction of the arrow shown in the figure indicates the direction in which the photographic film 3 is wound.

The CPU 7 has a basic data generating circuit 8 for generating basic data of, for example, shutter speed information and aperture value information at the time of shutter release, and generates a drive signal based on the basic data. And a memory 11 for temporarily storing basic data. As shown in FIG. 1, the recording head 4 includes a main body 15 having a gap 14 formed on a front surface thereof, and a case 16 for housing the main body. The recording head 4 has a width D1 of the main body 15.
The basic data is written to the magnetic recording layer with the same track width as that described above. The width D1 of the main body 15 is set to be larger than the width D2 of the reproducing head 17 (shown by a dashed line in the figure) usually used for a printer.

[0013] a description of the operation of the configured magnetic recording device as described above. When the photographic film 3 is exposed by the taking lens 2 and an exposure completion signal is sent to the CPU 7,
The CPU 7 reads out the basic data from the basic data generating circuit 8 and writes this in the memory 11. Further, the CPU 7 drives a motor (not shown) to wind up the photographic film 3.
When the photo sensor 22 detects the perforation 5b and sends a detection signal to the CPU 21, the CPU 7
And reads out the basic data from the drive control unit 10.

The drive control unit 10 sends the drive signal to the driver 9 to drive the recording head 4. This recording head 4
Writes basic data on the magnetic recording layer with a track width of width D1. Until the film frame advance is completed, the basic data for one frame is composed of a single recording track as shown in FIG.
Is written to the recording area 20. Since the photographic film 3 may be shifted in the width direction when the photographic film is fed, the recording area 20 is meandering as shown. The width D1 of the recording area 20 is larger than the width of the recording area in which basic data is written by the conventional recording head.

The basic data recorded on the photographic film is read out by the reproducing head of the printer and used at the time of the printing process. By the way, since the photographic film 3 is not meandered at the time of feeding the film of the printer, the area where the reproducing head 17 for reading the basic data comes into sliding contact is indicated by a broken line in FIG. Therefore, even if the recording area 20 is meandering, the reproducing head 17
Does not protrude outside the range of the recording area 20. Therefore, the basic data recorded on the photo film 3 can be reliably read out by the printer.

FIG. 5 shows the configuration of a camera incorporating a magnetic recording device having a plurality of magnetic heads . The CPU 30 for controlling the camera includes a recording head unit 33 composed of a pair of recording heads 31 and 32 arranged along the width direction of the photographic film 3, and a perforation 5.
a photosensor 6 for photoelectrically detecting a and 5b, a basic data generating circuit 8, an additional data generating circuit 37 for generating, for example, additional data of shooting location information and title information of a shooting frame, and a driver for driving a pair of recording heads 31, 32. 38,39
And a memory 11 for temporarily storing basic data and additional data read by the CPU 30.

Since this camera records not only basic data but also additional data, recording heads 31 and 32 are used.
Of the photographic film 3 is prevented from meandering in the width direction when the film is fed. Further, the position of the recording head 31 in the width direction of the photo film 3 is associated with the same position as that of the reproducing head 17 of the above embodiment.

The operation of the camera configured as described above will be described. When an exposure completion signal is input to the CPU 30, the CPU 30 drives a motor (not shown) to wind up the photographic film 3,
The basic data and the additional data are read from the additional data generation circuit 37 and written into the memory 11. Thereafter, when a detection signal is sent from the photo sensor 6, the CPU 30
The basic data and the additional data are read from 1 and sent to the drive control unit 40.

The drive control unit 40 generates drive signals 1 and 2 based on the basic data and the additional data, and sends them to the drivers 38 and 39. The recording head 31 driven by the driver 38 writes basic data, and the recording head 32 driven by the driver 39 writes additional data on the magnetic recording layer. In this way, the photo film 3 is
As shown in FIG. 5, a pair of recording areas 45 and 46 which do not meander are formed. The recording area 45 stores basic data.
The specific recording track to be recorded.

When reading basic data and additional data from the photographic film 3 on which a pair of recording areas 45 and 46 are formed, a pair of reproducing heads 48 and 49 are used. By the way, the above Symbol in the recording area 45 recording area 2
0 because the same type of underlying data is written and, the photo film 3 can be read out basic data be used to the printer. The photographic film 3 on which the recording area 20 is formed is transferred to the pair of reproducing heads 48,
The basic data can be read out even if the printer is used in a printer using the 49. Therefore, according to the magnetic recording method of the present invention, data recorded by each camera having a different number of magnetic heads can be read by a common printer.

[0021] Incidentally, a camera having a plurality of recording heads, in case of recording the additional data and basic data on the photographic film 3 meandering in the width direction when feeding is below the upper Symbol of the recording head unit 33 Recording head 3 with small recording width
Instead of 1, a print head 4 having a large print width is provided, and a print head 32 is provided on the upper side. When photographing is performed with this camera, a wide recording area 60 having a width D1 and a normal recording area 61 having a width D2 are formed on the photo film 3 as shown in FIG. At this time, basic data is recorded in a recording area 60 as a specific recording track, and additional data is recorded in a recording area 61.
There are recorded. In this way, the basic data can be read even when the photographic film 3 has a meandering shape. In such a case, it is necessary to prevent the additional data from being recorded in the recording area 60 and the basic data from being recorded in the recording area 61.

Alternatively, the recording head 4 may be driven without driving the recording head 32 to record only basic data in a wide recording area 62 as shown in FIG. At this time, the basic data may be written on the adjacent recording track indicated by the one-dot chain line in FIG.
It is preferable to perform writing that no data is recorded on the recording track adjacent to No. 2. This makes it possible to easily determine whether the data read from the adjacent recording track is additional data or noise.

In the above embodiment, as basic data,
Shutter speed information and aperture value information are also used as additional data, such as shooting location information and shooting frame title information, but other information from the camera includes date information, shooting information, trimming information, and flash emission information. There are presence / absence information, focal position information, camera position vertical / horizontal information, backlight determination information, color temperature information, lens focal length information, character input information, and camera model information. Even when used as data, the same effect can be obtained. In the above embodiment, two recording heads are arranged in the recording head unit, but three or more recording heads may be provided.

[0024]

As described above , according to the magnetic recording method of the camera of the present invention, regardless of the number of magnetic heads built in the camera, the film width when recording with the magnetic heads.
The allowable recording width in the direction is fixed.
For cameras with one built-in magnetic head,
A single recording track is formed, and multiple magnetic heads are
Multiple recording tracks in the camera
And any one of multiple recording tracks
Or one of them as a specific recording track,
Form a rack in the area where a single recording track is to be formed.
And a camera with multiple built-in magnetic heads
Data of a specific recording track to be recorded and one magnetic head
Single recording track for magnetic recording with a camera with a built-in pad
Since the data type is shared, the magnetic head of the camera
Regardless of the difference in the number of data , the common data can be read by the same reproducing device.

A camera incorporating a plurality of magnetic heads
When performing magnetic recording with a
Because the photo film is formed wider than the rack, even if the photo film moves in the width direction when the film is fed and the recording area may meander, it is recorded on a specific recording track.
The read data can be reliably read. In addition, Japanese
Recording only with a magnetic head corresponding to a fixed recording track
Data is not recorded on other recording tracks
Is recorded on a specific recording track.
Read from a part other than the specific recording track
Can be easily identified as additional data or noise.
Can be determined.

[Brief description of the drawings]

1 is a perspective view of a recording f head used in a magnetic recording apparatus of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a camera incorporating a magnetic recording device having one recording head .

FIG. 3 is a view showing a photographic film on which data is recorded by a magnetic recording device having one recording head .

FIG. 4 is a diagram showing a range of a photographic film on which a reproducing head slides during data reproduction.

FIG. 5 is a diagram showing a schematic configuration of a camera incorporating a magnetic recording device having a plurality of recording heads .

FIG. 6 is a diagram showing a photographic film on which data is recorded by a magnetic recording device having a plurality of recording heads .

FIG. 7 is a view showing a photographic film on which data is recorded by another magnetic recording apparatus having a plurality of recording heads .

FIG. 8 is a view showing a photographic film in which only basic data is recorded by a magnetic recording apparatus having a plurality of recording heads .

[Explanation of symbols]

 3 Photo film 4, 31, 32 Recording head 7, 30 CPU 8 Basic data generation circuit 20, 45, 46 Recording area 37 Additional data generation circuit

Claims (3)

(57) [Claims] 1. A camera having a single magnetic head or a plurality of data, which is used when performing a photographic print process.
In the magnetic recording method of a camera that records on the magnetic recording layer on a film using a camera with a built-in number of magnetic heads , regardless of the number of magnetic heads built in the camera, the film width direction when recording with a magnetic head previously determined print permitting width constant in the time of magnetic recording in a single camera with a built-in magnetic head, to form a single recording track of one in the recording within the allowable range, and a plurality of magnetic heads when the magnetic recording is built-in camera, as well as permits to form recording tracks of several double the allowable recording in width, the plurality of recording tiger
One of the tracks as a specific recording track
To replace the specific recording track with the single recording track.
Formed in the area to be formed and magnetically recorded by a camera incorporating a plurality of magnetic heads
The data of a specific recording track and one magnetic head
Data of the single recording track to be magnetically recorded with a stored camera.
A magnetic recording system for cameras, characterized in that the data type is shared . 2. A camera incorporating a plurality of magnetic heads.
When recording a track, the specific recording track is recorded in another recording track.
2. The method according to claim 1, wherein the width of the rack is wider than that of the rack.
The magnetic recording system of the camera described . 3. A magnetic recording device according to claim 1, wherein said magnetic recording medium corresponds to said specific recording track.
When performing magnetic recording only with the head, the single recording
Together with the data with the same
Recording data on other recording tracks except the recording track
Is recorded on the specific recording track.
3. The camera according to claim 1, wherein the recording is performed.
Magnetic recording system .