JP2991815B2 - Camera and camera control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera loaded with a film having a magnetic recording section for recording film information, photographing information and the like.

[0002]

2. Description of the Related Art A camera which records information on a film as magnetic information on a member which moves integrally with the feeding of the film and reads the magnetic information in conjunction with the feeding operation of the film is disclosed in Japanese Patent Laid-Open No. 22799.

[0003] US Patent No. 4,878,075 discloses that
A method has been proposed in which film information is rewritten so that exposed information is obtained. Further, U.S. Pat.
No. 5,600 proposes a cartridge for indicating unused, in use, or used. In addition, a technique of providing a magnetic recording section on a film to reproduce and record film information and camera photographing information has been proposed in US Pat. No. 4,864,33.
There are two.

A camera using such a film detects the exposure information by comparing the cartridge display (hereinafter referred to as VEI display) and the basic type of magnetic information, thereby rewinding the film in use. Even after
It is possible to reload the camera, set the unexposed portion, and shoot.

[0005]

However, in the above-mentioned prior art, when the use state display means of the film is in use, the camera can read information from the magnetic recording portion of the film with a magnetic head and can take a frame. However, if the magnetic information cannot be reproduced due to any accident , the photographing cannot be performed at all. In this case, the film
Although the film can be used by itself, the display of the film usage status changes in some way when loaded into the camera, or the film usage status is displayed at the stop position of the film spool. It is not clear what kind of usage status display it is (because it is always rotated when loading the film). When it is used again, double exposure etc. will be caused, and it will not be used at all. There is a risk of disappearing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a loaded mid-use fan.
If the information stored in the storage
Cameras and equipment that allow the film to be reused properly.
To provide a control device .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention can store information on the use state of a film.
Loaded with a film having a storage unit
Film cartridge with indicators that indicate the usage status of the system
In the camera which can use the index of the cartridge,
First reading means for reading the use state of the film from
Information on the use state of the film from the storage unit of the film
Second reading means for reading and partial use of film
The first reading means confirms that the frame has been exposed.
When reading from the index of the cartridge, the second reader
Steps are used to store information on the film use status from the film storage unit.
If the information cannot be read, the index of the cartridge
Control means for partially exposing the frame,
In addition, a storage unit that can store information on the use state of the film
Loaded with the film and the use condition of the film
Can use film cartridges with indicators that indicate
In the camera control device, the index of the cartridge
First reading means for reading the use state of the film from
Information on the use state of the film from the storage unit of the film
Second reading means for reading and partial use of film
The first reading means confirms that the frame has been exposed.
When reading from the index of the cartridge, the second reader
Steps are used to store information on the film use status from the film storage unit.
If the information cannot be read, the index of the cartridge
And control means for setting a part of frame exposure.

[0008]

[0009]

FIG. 1 is an exploded perspective view showing a schematic internal configuration of a camera according to the present invention, and FIG. 2 is a block diagram showing an entire circuit of an electric system of the camera according to the present invention.

In FIG. 1, reference numeral 1 denotes a feed photoreflector for detecting the perforations P1 and P2 of the film F and feed the film over a predetermined distance, 2 denotes a film feed motor disposed in a spool, 3 Is a gear mechanism for switching between deceleration, winding and rewinding, 4 is a fork for rewinding, 5 is a magnetic head for writing and reading information to and from a track T on the film F, and 6 is a magnetic head 5 It is a pressure bonding pad to press against.

The film cartridge C contains a film F
Is stored in a wound state. The film F has a base layer coated with a magnetic layer. One side edge of the film F has a track T on which data such as exposure status and a frame number is recorded as magnetic information, and the other side edge has a photographic image. Perforations P1 and P2 corresponding to the screen are provided.

Further, on the upper surface of the film cartridge C, there is provided a film use state display mark E on the end face of the film spool SP for displaying the use state of the film relative to the film cartridge C.
In order to detect the film use status display mark E, a photo reflector 19 is provided above the film cartridge C. Next, the configuration of FIG. 2 will be described. Reference numeral 8 denotes a CPU for controlling the driving of the entire system. This power is supplied from the battery 7. In addition to the battery 7, the CPU 8 receives a signal detected by the release switch 9 that is turned on when the photographing operation is started, a feeding circuit 10 that winds and rewinds the film F, and a signal detected by the feeding photoreflector 1. , A pulse detection circuit 11 for making a signal acceptable, a magnetic information writing circuit 12 for transmitting a signal for recording photographic information on a track T of the film F by the magnetic head 5, and a magnetism written on the track T of the film F. A magnetic reproducing circuit 13 for reading information, A for performing automatic exposure, automatic focusing, and shutter opening / closing operations
An E / AF / SH circuit 14, an LCD (liquid crystal display) 15 for displaying the frame number of the film F and performing an abnormality warning, LEDs (light emitting diodes) 16 and 17 for performing a lighting display for the abnormality warning, and sounding the abnormality. Each of the buzzers 18 for warning is connected.

FIGS. 3 to 7 are flowcharts showing the operation of the embodiment of the present invention. In the drawing, S means a step.

First, detection of the film use status display E (V
An EI check is performed (S1), and if unused is detected, S2 is wound up to the first frame (S2), set at the first frame position (S3), and then the process proceeds to the processing in FIG. On the other hand, when the use of the film is detected, the film use state (S1) detected by the photoreflector 19 and the detection circuit (not shown) is stored in the storage area in the CPU 8 (S4). Further wind the film (S
After 5), it is checked whether or not it is in the first frame (S6). If the first frame is confirmed, the magnetic information of the first frame is taken into the CPU 8 (S7). Next, it is checked whether or not the fetched magnetic information (Mg data) can be read as data (S8). If it cannot be read, "abnormal processing 2" (S14) is executed, and if it can be read, an exposure check is performed (S9). If it is not exposed in the initial state, the flow shifts to the flow of D in FIG.

In the exposure check, the exposure state is determined based on whether or not the magnetic information remains in the initial state of the film.
If the frame is not in the initial state, it is regarded that the frame has been exposed, the magnetic information of the second and subsequent frames is taken into the CPU 8 (S10), and it is checked whether the frame is within the photographable range (S11). Judge (S1
3). When there is an unexposed frame in the photographable range frame, the processing shifts to the flow of E in FIG. If there is no unexposed frame in the photographable range frame, "abnormal processing 1" is executed (S12). In this process, since the magnetic information has been exposed in all the frames and the normal operation of the magnetic circuit has been confirmed in step S8, the film cartridge C or the film cartridge C This is to be treated as a problem of the film F. If the data cannot be read in the magnetic information check in step S8, there is a possibility that the magnetic circuit may fail. Therefore, "abnormal processing 2" is performed as a magnetic problem (S14), and then a film presence / absence switch (not shown) ) Is detected (S15), and when the film F is loaded, the flow shifts to the flow of A in step S1 in FIG.

Next, the processing of FIG. 4 will be described.

First, in order to confirm whether or not there is a frame that has been exposed after the second frame, magnetic information is sent to the CPU 8.
(S16), it is checked whether the frame is within the photographable range (S17), and it is determined from the exposure data whether the frame is not exposed (S18). If there is an exposure frame within the photographable range frame, the frame number at which the exposure unit starts is stored (S19), and is used as double photographing prevention data. Then, the film is rewound to the first frame (S2
0), a photographable frame is set (S21), and the flow shifts to the flow B in FIG. On the other hand, if it is determined in step S17 that n> Max frame, the magnetic information has not been exposed in all frames even though the film use status display mark E is being used, and the unexposed information is detected. . Therefore, since it is confirmed that the initial state of the magnetic information is normally detected by the magnetic circuit,
"Abnormal processing 1" is performed as a problem of the cartridge C or the film F (S22), and thereafter, step S1 in FIG.
The flow shifts to the flow C in FIG.

On the other hand, in the flow of E, first, a frame number at which unexposure starts is stored (S23), and this is used as double photographing prevention data. Then, in order to check whether or not there is a frame that has been exposed again after the frame stored in step S23, magnetic information is taken into the CPU 8 (S24), and whether or not the frame is within the photographable range is checked. It is determined whether or not the frame is an unexposed frame based on the exposure data (S25). If there is an exposed frame in the photographable range frame, an exposure check is performed (S26), and a frame number at which the exposure unit starts again is stored (S27), which is used as double photographing prevention data. If it is determined in step S25 that there is no exposed frame in the photographable range frame, the film is rewound to the first unexposed frame stored in step S23 (S28), and a photographable frame is set (S29). ), And moves to the flow of B in FIG.

Next, the processing of FIG. 5 will be described.

First, ON / OFF of the release switch 9
Is detected (S30), and if ON, AE processing (S3)
1), the AF processing (S32) and the SH processing (S33) are sequentially performed to perform well-known photometry and distance measurement, and a photographing operation is performed. Next, the feeding motor 2 is rotated to start winding the film F (S34). Further, data at the time of photographing is recorded on the track T by the magnetic head 5 and the magnetic information writing circuit 12 (S35). Then, the perforations P1 and P2 are formed by the photoreflector 1.
When the signal is detected as a signal for one frame, the feeding motor 2 is stopped (S36), and the winding is completed.

Thereafter, it is determined whether or not the frame is an exposed frame stored in step S19 or step S27 (S37). If the frame has been exposed, the frame is rewound (S3).
9) If unexposed, whether or not the film F has finished up to the last frame is detected by a perforation for detecting the last frame (not shown). If the last frame has not been completed, the process proceeds to step S30. If the last frame has been completed, the film F is rewound (S39). Upon completion of the rewinding, the film use status display mark E is moved to the "used" position (S4).
0). Next, the removal of the film is detected by a film presence / absence switch (not shown) (S41), and if the film is removed, the process proceeds to the processing after C in FIG.

FIGS. 6 and 7 are flowcharts showing the details of the "abnormal processing 1" and the "abnormal processing 2" shown in FIGS.

First, "abnormal processing 1" will be described.
First, rewind the film so as not to take a picture (S
42) Then, the photographing is prohibited so as not to receive the operation output of the switch 9 (S43). Further, after an LCD display (for example, "FE") indicating a film error is performed (S44), the LED 16 is blinked (S4).
5). Next, the film use status display mark E is moved to "used" (S46), and the removal of the film is detected based on the operation of the film presence / absence switch (S47).
If it is taken out, the photographing inhibition state executed in step S43 is released (S48).

Next, "abnormal processing 2" will be described.
First, the film F is rewound as in the case of the “abnormal process 1” (S49), and the photographing is prohibited (S5).
0). Next, an LCD display (for example, "ME") indicating a magnetic circuit error is performed (S51), and an LED is displayed.
After blinking 17 (S52), a warning sound is generated by the buzzer 18 (S53). Next, the film use status display mark E is set to "in use" (S54), and if it is detected that the driving battery 7 has been removed, reset is performed (S55).

FIG. 8 is a perspective view showing another example of the display of the film use state.

Reference numeral 20 denotes a film use state display means.
By the film use state display means 20, the film F
The black portion moves in the circumferential direction in accordance with the used amount of, and can be individually displayed as unused, in use, or used according to the location of the black portion.

[0027]

As described above , according to the present invention,
Information stored in the memory of the loaded film in use
Properly reuse the film even if the information cannot be reproduced
That can provide a camera and its control device
is there.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic internal configuration of a mechanism section of a camera according to the present invention.

FIG. 2 is a block diagram showing an entire circuit of an electric system of the camera according to the present invention.

FIG. 3 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 4 is a flowchart showing processing of flows D and E following FIG. 3;

FIG. 5 is a flowchart showing a process of a flow B following FIGS. 3 and 4;

FIG. 6 is a flowchart showing details of “abnormal processing 1” shown in FIGS. 3 and 4;

FIG. 7 is a flowchart showing details of “abnormal process 2” shown in FIG. 3;

FIG. 8 is a perspective view showing another embodiment of a film use state display.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Feeding photoreflector 2 Film feeding motor 3 Gear mechanism 4 Fork 5 Magnetic head 6 Crimping pad 7 Battery 8 CPU 9 Release switch 10 Feeding circuit 11 Pulse detection circuit 12 Magnetic information writing circuit 13 Magnetic reproduction circuit 14 AE / AF / SH circuit 15 LCD 16, 17 LED 18 Buzzer 19 Photoreflector 20 Usage status display means C, C 'Film cartridge E Film usage status display mark F Film SP Film spool T Track P1, P2 Perforation

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/24 G03B 17/00

Claims (2)

(57) [Claims] (1) Information on a use state of a film can be stored.
A film having a storage unit is loaded and the film
Use a film cartridge with an index that indicates
For cameras that can be used,
First reading means for reading the use state of the film from the
Reads film usage status information from the film storage
The second reading means for removing the film and the use condition of the film are partially
The first reading means checks that the cart has been exposed.
When reading from the index of the ridge, the second reading means
Is the information on the use condition of the film from the storage unit of the film
If the cartridge cannot be read, the index of the cartridge is reset.
And control means for setting the exposure of a part frame to be completed.
Camera. 2. The use condition information of the film can be stored.
A film having a storage unit is loaded and the film
Use a film cartridge with an index that indicates
In a camera control device that can be used, the cartridge
First reading for reading the use state of the film from the index
Means and use condition of the film from the storage unit of the film
Reading means for reading the information of the film, and the state of use of the film
The first reading means confirms that the state has been partially exposed.
When reading from the index of the cartridge, the second
Reading means for using the film from the storage unit of the film
If the status information cannot be read, the cartridge
Control means for setting some of the indicators to be frame-exposed.
A control device for a camera.