JPH04128730A - Camera using film with magnetic storage part - Google Patents

Abstract

PURPOSE:To prevent photography of a film when the film is not his or her own by providing discriminating means for discriminating whether an identification mark read out by an identification mark reading means coincides with the identification mark stored by a storage means or not. CONSTITUTION:The storage means 106 stores an individual identification mark previously decided, the identification mark read out means 104 reads out the individual identification mark written in a magnetic storage part provided on the film 106. The discriminating means 105 discriminates whether the identification mark read out by the identification mark reading means 104 coincides with the identification mark stored in the storage means 106 or not. Whether the instruction of inhibiting photography to the film loaded on a camera is executed or not is decided by discriminating the stored identification mark from the identification mark read out. Thus, the photography of the film can not be executed when the film is not his or her own even though the film has not been exposed or is exposed halfway.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a camera using a film with a magnetic storage section, which is equipped with a reading means for reading out information written in a magnetic storage section provided on the film.

(Background of the Invention) Conventionally, in cases such as photo shoots where multiple people use multiple films, it has been difficult to manage the film, such as whether the film is used or not, or whether it is your own film or someone else's film. was left to the management of each individual.

However, in the above example, since the management of the film was left up to each individual, the same film could not be distinguished visually, so if it had been classified as an unexposed film, it would have been mistaken. There was a risk that someone could play a trick on them or use them.

Furthermore, in the case of film that has already been photographed, once it becomes indistinguishable from that of someone else, the current situation is that the distinction cannot be made until it is developed.

(Objective of the Invention) The object of the present invention is to solve the above-mentioned problems and to make it possible to shoot on unexposed film or partially exposed film if it is not your own film. It is an object of the present invention to provide a camera using a film with a magnetic storage part that can be prevented from being damaged.

(Features of the Invention) In order to achieve the above object, the present invention includes a storage means for storing a predetermined personal identification code, and a storage means for storing a predetermined personal identification code, and a personal identification code written in a magnetic storage section provided on a film. an identification code reading means for reading, and a determining means for determining whether or not the identification code read by the identification code reading means and the identification code stored in the storage means match; The camera is equipped with a photography prohibition means that instructs photography to be prohibited when the identification code is determined to be inconsistent by the storage means, and the camera is activated based on the discrimination between the identification code stored in the storage means and the readout identification code. The present invention is characterized in that it is determined whether or not to instruct prohibition of photographing on the film loaded in the camera.

(Example of the invention) FIG. 1 is a block diagram showing one embodiment of the present invention.

When the film 106 is loaded into the camera, the control means 101 in the camera first determines whether or not a personal identification code has already been written in the magnetic storage section of the film 106, and if it has not been written, uses the identification code writing means 103 to write the identification code of the individual into the magnetic storage section.

In addition, if an identification code has already been written, the identification code is read out from the magnetic storage section by the identification code reading means 104, and a check is made as to whether or not the identification code matches the personal identification code held in advance. The determining means 105 determines. As a result, if the film is not exposed, that is, the film is someone else's unexposed film or partially exposed film, a signal to that effect is sent from the discrimination means 105 to the photographing prohibition means 1.
07, and the operation of the photographing execution means 102 is prohibited by the action of the photographing prohibition means 107.

On the other hand, if the discrimination means 105 determines that they match, or if the identification code of the individual is written for the first time by the identification writing means 103, it is not possible to shoot the film. Since this is possible, the press state of the release button is monitored and the first release button of the release button is pressed. When it is detected that the second stroke has been made, the photographing execution means 102 is operated. As a result, known photographing preparation operations and photographing operations are performed. Thereafter, similar operations are performed for the specified number of frames.

FIG. 2 is a block diagram showing the configuration of a camera for concretely realizing the above embodiment.

In Fig. 2, 1 is a microprocessor that controls the entire camera, 2 is a photometry circuit, 3 is a distance measurement circuit, 4 is a shutter control circuit, and 5 is an aperture control circuit, and 2 to 5 are all known circuits. configured. 6 is the light metering/distance measurement (shooting preparation operation) start switch (SWI), 7 is the exposure (shooting operation)
These are the start switches (SW2), which are turned on at the first and second strokes of the release button, respectively. 68 is the main switch (main SW), 9 is the magnetic recording circuit, 10 is the magnetic head, and 11 is the winding switch. Return start button (REW button), 12 is an identification code recording switch (recording SW
), 13 is a display circuit that displays the shutter speed, aperture value, presence or absence of a film cartridge, warning of film removal, etc.
14 is a back cover switch for knowing the open/closed status of the back cover; 15
17 is a motor drive circuit that feeds the film 16, and a cartridge that stores the film 16.

FIG. 3 shows the film 16 used in this example.
FIG.

In FIG. 3, 1, 2, 3, . . . 36 are the number of frames to be photographed, 18 is a perforation for feeding the film, and 19 is a magnetic storage section. The identification code of this embodiment is It is recorded in the magnetic storage section 19a located in front of the photographed frame.

The identification code recorded in the magnetic storage section 19a is as follows:
For example, a different number such as a serial number is used for each camera, and the identification code written in the magnetic storage section 19a is
Alternatively, the identification code read from here is stored in the storage section within the microprocessor 1.

Next, the operation of the microprocessor 1 will be explained using the flowchart shown in FIG.

When the main switch 8 is in the OFF position, no other switches are accepted, and when the main switch 8 is in the ON position, the process proceeds from step 101 to step 102, and it is determined whether or not autoloading is to be performed. If it is in the state to do so, step 103
At step 104, the identification code recorded in the magnetic storage section 19a on the film 16 is read, and if the identification code is recorded, the process advances to step 104. The identification code is determined in step 104, and if it does not match the code stored in the camera, the process proceeds to step 106. Also, if the information that the photograph has been taken is recorded in step 105, step 10
Proceed to 6. In step 106, the film is rewound, and after the rewinding is finished, a warning is issued, such as by flashing the film mark, prompting the camera to remove the film, and in step 108, the camera waits for the back cover to be opened.

On the other hand, if the identification code is not recorded or if the identification codes match and the image has not been photographed, step 109 is performed.
The film is fed until the frame is reached.

If it is determined in step 102 that automatic loading is not performed, it is determined in step 110 whether or not the switch 12 for recording the identification code is on. If it is on, the film is rewound to the leading edge in step 111, and an identification code is recorded on the magnetic storage section 19a in step 112.
At step 13, the frame is rolled up until it is returned to its original frame.

In step 114, it is determined whether or not the rewind button 11 has been pressed, and if it has been pressed, the step 106 described above is performed.
Proceed to. If the button has not been pressed, the process advances to step 115. In step 115, it is determined whether the switch SW1 is on or off. As a result, if it is off, the process returns to step 101, and if it is on, the process proceeds to step 116 and subsequent steps. In step 116, a photometric value is obtained using the photometric circuit 2, which is A/D converted, and the process proceeds to step 117, where TV and AV values are determined based on the program diagram. In the next step 118, distance measurement information is obtained using the distance measurement circuit 3, and in the next step 119, the lens is driven based on the distance measurement information.

After that, if switch SW2 is turned on, step 121
Proceed to the following.

That is, in step 121, the shutter control circuit 4 and the aperture control circuit 5 are operated to expose the film. In the next step 122, the film is wound and the TV, AV
Write data such as values onto the magnetic storage unit 19,
Next, in step 123, if the specified number of frames have been photographed, proceed to step lo6; otherwise, proceed to step 1
Return to 01.

This completes the series of operations.

According to this embodiment, a personal identification code is recorded on a film having a magnetic storage section, and by comparison with the identification code in the camera, photography is prohibited even on unexposed film or partially exposed film. By making it possible to perform the following actions, for example, when taking pictures using multiple cameras, it is possible to record an identification code on the film assuming that it is exclusive to one camera. Even if you accidentally load film into another camera, no pictures will be taken.

Similarly, to show that it is a film exclusively for you,
If the identification code is recorded on the film, it will not be used by someone else by mistake.

(Modified example) In this embodiment, when it is determined that there is a mismatch between the read identification code and the stored identification code, the photographing operation is prohibited, but the invention is not limited to this.
A warning display may be displayed to notify the photographer of the prohibition of photographing, or in other words, a configuration may be adopted in which an instruction to prohibit photographing is given.

Also, the camera is configured to write an identification code, but even if it does not exist inside the camera, it may be written on the magnetic storage part of the film by other equipment, such as a developing machine (lab) at a camera store. In a read/write machine, the same code may be recorded in the magnetic recording section of the film or stored in a storage section such as an EEPROM in the camera.

(Effects of the Invention) As explained above, according to the present invention, the storage means storing a predetermined personal identification code and the personal identification code written in the magnetic storage section provided on the film are stored. an identification code reading means for reading, and a determining means for determining whether or not the identification code read by the identification code reading means and the identification code stored in the storage means match; The photographing prohibition instructing means is provided for instructing prohibition of photographing when the means determines that there is a mismatch between the identification codes, and thereby, by discriminating between the identification code stored in the storage means and the read identification code, Since it is decided whether or not to issue an instruction to prohibit shooting on the film loaded in the camera, even if it is unexposed film or partially exposed film, it will not apply if it is not your own film. It is possible to disable shooting on film.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing a specific configuration for realizing the embodiment shown in Fig. 1, and Fig. 3 is a film used in this embodiment. FIG. 4 is a flowchart showing the operation of the microprocessor shown in FIG. 1... Microprocessor, 9... Magnetic recording circuit, 1o... Magnetic head, 16...
... Film, 19 ... Magnetic storage section, 101
... Control means, 103 ... Identification code writing means, 104 ... Identification code reading means, 105
...discrimination means, 106...film,
107...Means for prohibiting photography.

Claims (3)

[Claims] (1) A storage means for storing a predetermined personal identification code, an identification code reading means for reading out the personal identification code written in a magnetic storage section provided on the film, and the identification code reading means. A camera using a film with a magnetic storage unit, comprising a determining means for determining whether or not a read identification code matches an identification code stored in the storage means. (2) A camera using a film with a magnetic storage unit according to claim 1, further comprising photographing prohibition instructing means for instructing prohibition of photographing when the discriminating means determines that the identification codes do not match. (3) A camera using a film with a magnetic storage section according to claim 1 or 2, further comprising identification code writing means for writing an individual identification code into a magnetic storage section provided on the film.