JPH03273226A - Film feeding controller for camera - Google Patents

Abstract

PURPOSE:To surely reproduce information by discriminating the plural areas of a film or a film cartridge where information has been recorded, reproducing the recorded content and controlling the feed of the film so that an unexposed image plane may be opposed to an aperture based on the reproduced information on a frame already photographed. CONSTITUTION:1st and 2nd storage means 4 and 5 are connected to an information reproducing means 3 in order to store the information on the frame already photographed which is reproduced from the film or film cartridge 1. A control means 8 controls not only an information recording means 2, an information reproducing means 3, the 1st and the 2nd storage means 4 and 5 but also a film feeding means 6 based on the information from a film loading detection means 7, a halfway take-out detection means 9 and an already recorded information discriminating means 10 and the information from the 1st and the 2nd storage means 4 and 5 so as to discriminate the plural areas of the film or the film cartridge 1 where the information has been recorded, to reproduce the recorded content and to feed the film so that the unexposed image plane may be opposed to the aperture based on the reproduced information on the frame already photographed. Thus, the information is surely reproduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a film feeding control device for a camera that performs feeding 5i11fll when reloading a film that has been taken out halfway without photographing the final frame. It is something.

[Prior Art] Conventionally, there are cameras in which the film loaded in a camera is not used until the final frame, but is taken out of the camera midway through, and the film is loaded again so that it can be used again. In order to ensure film feeding when reloading the film, conventionally,
The camera records information about the number of frames taken on the film. That is, information on the number of photographed frames is magnetically recorded in a part of the film leader, and when the film is reloaded, the camera reproduces this information to control film feeding.

[Problems to be Solved by the Invention] However, in such a conventional device, when the film is repeatedly taken out in the middle of the film, the same storage area is overwritten, and as a result, the past If the information is not completely erased and remains, there is a problem that false detection may occur when the information is reproduced. In particular, when information is recorded magnetically, there is a problem in that if the recording position is shifted, crosstalk with already recorded information may occur.

[Means for Solving the Problems] In order to solve such problems, a film feeding control device for a camera according to the present invention provides a first film feeding control device that stores photographed frame information according to a first film feeding direction. storage means, and a second
a second storage means for storing photographed frame information according to the film feeding direction of the film; a recording means for recording the contents of the first and second storage means on the film or the film cartridge; a reproduction means for reproducing the contents of the first and second storage means recorded on the cartridge; and an unexposed screen facing the aperture based on photographed frame information reproduced by the reproduction means and corresponding to the film feeding direction. The camera is equipped with a film feeding means for feeding the film in a desired manner, and a discriminating means for discriminating a plurality of number information recording areas in which the photographed frame information is recorded on the film or the film cartridge.

[Operation] Discriminates the plural number information recording areas of the film or film cartridge, reproduces the recorded contents, and adjusts the film feed to make the unexposed screen face the aperture based on the reproduced photographed frame information. Control takes place.

[Example 1 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram corresponding to claims showing an embodiment of a film feeding control device for a camera according to the present invention.

During the day, ■ indicates the film or a film cartridge containing the film, 2 indicates an information recording means for recording information regarding the number of photographed frames on the film or film cartridge L, and 3 indicates the number of frames recorded on the film or film cartridge 1. This is information reproducing means for reproducing completed piece information.

Further, 4 is a first storage means which is connected to the information recording means 1 and stores photographed frame information corresponding to the 2nd film feeding direction, that is, the normal winding film feeding direction; It is connected to the information recording means 1 and stores photographed frame information corresponding to a second film feeding direction (that is, a film feeding direction using a prewind method in which the film is wound in advance to the end and photographed from the first frame). This is the second storage means. The first storage means 4 and the second storage means 5 are also connected to the information reproduction means 3 in order to store photographed frame information reproduced from the film or film cartridge 1.

Further, 6 is a film feeding means, 7 is a film loading detecting means, 8 is a control means, 9 is an intermediate removal detecting means, and 10 is a number information determining means.

The control means 8 then controls the information recording means 2. Information reproduction means 3. The film loading detecting means 7. The information from the intermediate removal detection means 9 and the number information determination means 10,
The film feeding means 6 is controlled by the information stored in the second storage means 4.5.

Next, FIG. 2 is a block diagram showing an embodiment of a film feeding control device for a camera according to the present invention. In the figure, 21 is a CPU, 22 is a magnetic head, 23 is a recording circuit that magnetically records information on the film via the magnetic head 22, and 24 is information magnetically recorded on the film via the magnetic head 22. 25 is a motor drive circuit, 26 is a film feeding motor, SWI, SW2
．． SW3 is a switch.

Here, SW1 is a switch that operates in conjunction with the opening and closing of the back cover of the camera when loading film, switch SW2 is a switch that is activated when removing film or part way through, and switch SW3 is a switch that operates when loading film. This is a switch linked to the perforations that counts the perforations to check the amount.

Note that the CPU 21 is stored in the first storage means 4. of the complaint correspondence diagram in FIG. The second storage means 5 and the control means 8, the motor drive circuit 25 and the motor 26 are connected to the film feeding means 6 shown in FIG. They respectively correspond to means 9.

Next, FIG. 5 is a block diagram of a film to which the present invention is applied. In the figure, 51 is a film cartridge;
2 is a film, 53 is a photographic frame, 54.55 is a perforation, and 56.57 is a recording area in which information such as the number of film frames is magnetically recorded. 8 Such a plurality of recording areas 5
6.57, different frame number information is recorded each time the film is rewound.

Next, FIG. 3 is a flowchart illustrating the film feeding operation when the film is loaded into the camera. This operation reproduces information recorded on the film to identify the usage status of the film. This program is started when film is loaded into the camera, the back cover is closed, and the switch SW1 is turned on.

First, in step 300, it is detected whether or not the switch SWI is turned on. If it is turned on and becomes "Y", then in step 301, FilmN, that is, the presence or absence of film loading is determined. The process ends because the film is not loaded, but when the film is loaded and the status becomes "Y", the normal rotation of the motor 26 is started in step 302.

The film is pulled out of the cartridge.

When the film is pulled out, the detection of the position on the film where information is recorded is determined in step 303, and when the film is pulled out to this position and becomes "Y", the recorded information is reproduced in step 304. In order to do this, a head touch operation is performed to bring the magnetic head 22 into contact with the film to reproduce the information, and in step 305 the reproduced information is judged.

Then, there is no information reproduced from the film and step 3
If it is judged as "N" in step 306, it means that the film is New Film, that is, a new film, and in step 306, the 1i-th shadow frame of the film is set to face the aperture.
Perform wFi1m operation.

In this way, when this first photographing frame faces the aperture, a photographing flag is set in step 307, and then photographing processing is performed in step 308.

Next, if there is information reproduced from the film and the result is "Y" in step 305, whether or not there is an area where photographed frame information should be recorded when this film is photographed and rewound. That is, it is determined in step 309 whether or not there is space in the recording area, and if there is no space, the film is rewound in step 310, and then the first warning sound is output in step 311 and the process ends. do. The determination in step 309 is based on the fact that the number of recordable areas is predetermined, and the number of areas and the number of placed piece information (
When the former exceeds the latter, it is determined that there is space in the recording area.

In addition, if there is space in the recording area for the frame information that has already been photographed, the answer is "Y" in step 309, and in this case, it is determined in step 312 whether the remaining recording area is for one shot, and the memory is stored. If there is only one portion of the area remaining, a second warning sound is sent in step 313, and step 31 is performed.
In step 4, the MRI (half-used film that has been taken out halfway) is identified, and in step 315, a film feeding operation corresponding to this MHI film is performed, and the screen to be photographed on this film is set to the aperture. (The processing of this step 315 is hereinafter referred to as MHI processing.) Thereafter, in order to perform photographing, a photographing flag is set in step 307, and photographing processing is performed in step 30g.

In this way, when loading film and shooting,
If there is no free space in the recording area of the film, the shooting process will not be performed, and if there is only one recording area left,
The system is designed to issue a warning and execute the photographing process. In other words, a warning is given to finish photographing all the pieces at this time.

Next, FIG. 4 is a flowchart illustrating the operation of the CPU 21 according to the present invention when rewinding the film.

The detailed operation when rewinding the film will be explained based on the figure. Note that this program is started when the switch SW2 for starting midway rewinding is turned on.

First, when it is detected in step 400 that the switch SW2 for rewinding the film is turned on, the reverse operation of the film motor 26 is started in step 401 to rewind the film, and then in step 402 it is determined whether the shooting flag has been set. to decide. This is done in consideration of the case where not even a single frame is taken after the film is loaded; if no frame is taken, 1; the answer is "N" in step 402, and then the process goes to step 409 to rewind the film. determine the completion of.

Then, when rewinding is completed and Yj is reached in step 409, the drive of the motor 26 is stopped in step 410.In this case, since the head 22 is not in contact with the film, the film is moved from the film to the 1st drive. 22 is not performed.

After loading the film, if several frames have been photographed and rewound, a determination of "Y" is made in step 402, and in this case, it is determined in step 403 whether or not the film has reached the position where information is recorded. And when this reaches the recording position,
In step 404, a head touch operation is performed to bring the head 22 into contact with the film. Then, step 30 in Figure 3
If the information has not been played back in step 5, the camera has memorized this information, so step 4 is performed based on this stored information.
In this case, the recording mode is set in step 406, and in step 407, since a new film was used and then rewound halfway, the MHI data ( The frame information (photographed frame information) is recorded at the recording position of this film, and in step 408 it is determined whether data recording is complete.

Once the data recording is complete, the next step is...
Step 409 determines whether rewinding has been completed, and step 40
When the rewinding is completed at step 9 and the result is "Y", step 41
0, the drive of the motor 26 is stopped, and then step 411
Then, a spatula touch operation is performed to retract the head 22 from the film.

If it is determined in step 405 that the film is not a new film, that is, if it is an MHI film for which playback data was obtained in step 305 in FIG. The data recorded in the recording area is sequentially reproduced, and in step 414 it is determined whether the data reproduction is finished. When the data reproduction is finished, the recording mode is set in step 415, and then in step 116, the film is transported to a position in the recording area on the film where no data has been recorded, and the film is moved to this position. The MRI data stored in the first or second storage means is recorded, and
9, it is determined whether data recording is finished.

Once the data has been recorded in this way, step 40 determines whether rewinding has been completed, and when step 409 indicates that rewinding is complete and the result is "Y", step 410 starts motor 2.
6 is stopped, and then, in step 4H, a spatula touch operation is performed to retract the head 22 from the film.

In this way, when recording information such as the number of frames shot when the film is rewound, this information is not recorded in the position where the information is already recorded, but is recorded in the position where no information is recorded. It was designed to be recorded.

Next, FIG. 6 shows the operation of the CPU 21 when the film that was taken out midway is reloaded and the film is wound.
3 is a flowchart illustrating an operation for reproducing recorded information.

When the head 22 comes into contact with the reproduction position of the information on the number of photographed frames of the film, the information is reproduced and stored in step 600, and then the film is wound to the next reproduction position and the next data is recorded in step 601. to judge. and,
If there is no next data and the result is "N", the stored information value is adopted (step 612), and MHI processing such as film feeding control is performed based on this value (step 6).
It will be held in 07.

Also, if the following data exists in step 601, “Y
”, and in this case, this information is reproduced and stored in step 602. Next, the information reproduced in step 600 and the information reproduced in step 602 are compared. Then, in step 605, a judgment is made as to whether reading ahead or reading backward, that is, information on the number of photographed frames in the recording area nearer to the leader part of the film played back in step 600 [recorded in the recording area 57 in FIG. 5(c). Latest recorded information: Pre-read]
and information on the number of captured frames recorded one before this and played back on Ste.1 Pro 02 [Recording area 5 in Figure 5 (b)]
If the number of recorded frames of the film read ahead is greater than the number of frames taken of the film read backward, it is said that the film was played back normally. Therefore, the latest playback information read in advance in step 606 is adopted, and MRI processing such as film feeding control is performed in step 607 based on this value.

If the latest frame number information of the pre-fetched film is smaller than the frame number information of the post-fetched film and it is determined as "N" in step 605, this means that abnormal playback has occurred, and the step A warning is output at 608,
Next, the film is rewound using Ste.t Pro 09. Then, as the film is rewound, it is determined in step 610 whether or not the film has reached the recording position, and when it has reached the recording position, the motor is driven to rotate forward in step 611 to transport the film in this direction. , the information is reproduced again in step 600.

In this way, playback abnormalities are detected by comparing the latest information played from the film with the previous playback information of this latest information, and if an abnormality is detected, the information is read again. It is.

[Effects of the Invention] As explained above, the film feed control device for a camera according to the present invention discriminates between a plurality of numerical information recording areas of a film or a film cartridge, reproduces the recorded contents, and reproduces the recorded contents. Since the film is configured to control film feeding so that the unexposed screen faces the aperture based on the photographed frame information, if the film is repeatedly removed in the middle, each photograph will be stored in multiple storage areas. Since completed frame information is recorded, there is no possibility of overwriting in the same storage area, and therefore information can be reliably reproduced.

Furthermore, for the above-mentioned reasons, the problem of misalignment of recording can be solved, and the problem of crosstalk with already recorded information does not occur.

[Brief explanation of drawings]

Fig. 1 is a complaint correspondence diagram showing an embodiment of a film feed control device for a camera according to the present invention, and Fig. 2 is a block diagram showing an embodiment of this device. 6
The figure is a flow chart explaining the operation of this device, and Figure 5 is an IA diagram of a film using 1M of the present invention. means. 3...information reproducing means, 4...-first storage means,
5...Second storage means, 6...Film feeding means, 7...Film loading detection means, 8...Controlling means, 9...Midway removal detection means, 2(・ ・CP
U, 22...Magnetic head, 23... Recording circuit,
24... Regeneration circuit, 25... Motor drive circuit, 2
6...Motor, SWl, SW2 SW3...
·switch.

Claims (1)

[Scope of Claims] In a film feeding control device that is installed in a camera that allows film to be taken out halfway and controls the feeding of the film, there is provided a first film feeding control device that stores photographed frame information according to a first film feeding direction. a second storage means for storing photographed frame information according to a second film feeding direction; and a recording means for recording the contents of the first and second storage means on the film or the film cartridge. and a reproducing means for reproducing the contents of the first and second storage means recorded on the film or the film cartridge, and unexposed frames reproduced by the reproducing means and based on photographed frame information according to the film feeding direction. It is characterized by comprising a film feeding means for feeding the film so that the screen faces the aperture, and a determining means for determining a plurality of information recording areas in which the photographed frame information is recorded on the film or the film cartridge. film feed control device for cameras.