JPH10221759A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optionally and precisely change the magnetic recording of a developed film by the operation of a corresponding switch or button by properly selectively switching the transmissivity of a film changed before and after developing processing and correctly detecting the existence and the position of the perforation of the developed film even within the range of an inherent characteristic which can be detected by a sensor. SOLUTION: By cartridge information detection means 24, 27 and 31, the discrimination information of a loaded film cartridge 29 is detected. By perforation detection means 26 and 32, the perforation is detected by generating a signal according to the perforation of the film fed out from the cartridge 29 and moved and processing a prescribed perforation signal according to the discrimination information of the cartridge 29 detected by the cartridge information detection means. By film feeding control means 33 and 34, the film is controlled to be fed and moved based on the outputs of the perforation detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an optical detection technique and a magnetic recording technique of a camera using a cartridge film having information according to a use state of the film.

[0002]

2. Description of the Related Art In recent years, a camera technique has been proposed which can record not only image information of a subject on a film but also information accompanying the image. For example, Japanese Patent Application No. 8-1849
In the No. 04, immediately after shooting, information taken on a frame (frame) in the film before development is temporarily stored in a memory, and a desired number of prints, title information to be imprinted on the frame, aspect information, and the like are stored. A technique is disclosed in which after changing ratio information or the like using a predetermined operation button, a rewrite (rewrite) operation is performed on the same frame. More specifically, the rewriting method is a method of rewinding one frame from the position of the loaded film, and then writing the film while winding the film.

A camera proposed in Japanese Patent Application Laid-Open No. 8-254740 has a so-called "film use state" in which a loaded film is unexposed, in the middle of photographing, or photographed. Has a function that can determine
Further, image information of each frame in the cartridge film can be known. More specifically, if the loading of the developed film cartridge is detected, the data of the frame in the developed film is read, and the contents of the data can be visually recognized by displaying and outputting the data contents.

[0004]

Normally, the transmittance of an undeveloped film and that of a developed film differ from each other. Therefore, in a system in which the perforation of the film is optically detected by, for example, an optical sensor, it is necessary to cope with it by some means.

[0005] However, the above-mentioned prior art contents do not include the following techniques. In other words, Japanese Patent Application No. 8-
The technique of 184904 does not teach any technique relating to loading of a developed film.

The teachings of Japanese Patent Application Laid-Open No. 8-254740 also teach the specific details of an optical technique for detecting perforations disposed on a developed film when the film is loaded. It has not been.

(Object) Therefore, in the present invention, first, a film feed system of a system in which the perforation of a film is detected by an optical sensor so as to cope with a difference in transmittance of each film between an undeveloped film and a developed film. It is a first object of the present invention to provide a camera capable of correctly detecting with an optical sensor even if the transmittance differs in accordance with the state of a loaded film in the feeding control.

A second object is to look at a print received from a DPE (lab) and change the imprint title and the aspect ratio at the time of printing for the next print, or change the print number as desired by the user. It is an object of the present invention to provide a camera which can be designated by itself and which can arbitrarily and accurately change magnetic recording information in a developed film.

[0009]

The present invention employs the following means to achieve the above object. That is, [1] in a camera using a film cartridge capable of outputting predetermined discrimination information according to a use state of a film to be accommodated, cartridge information detecting means for detecting the discrimination information of the loaded film cartridge; A signal is generated in accordance with the perforation of the film which is sent and moved from the film cartridge, and a predetermined perforation signal is processed in accordance with the discrimination information of the film cartridge by the cartridge information detecting means to detect the perforation. A camera comprising: a perforation detecting means for controlling the movement of the film based on an output of the perforation detecting means.

[2] In a camera using a film cartridge having predetermined discrimination information according to the use state of the film to be accommodated, cartridge loading detecting means for detecting the loading of the film cartridge, Cartridge information detecting means for detecting the discrimination information, and when the information of the film cartridge by the cartridge information detecting means is predetermined first information, based on a first condition, and based on predetermined second information, In this case, based on the second condition, perforation detection means for detecting perforation of the film sent from the film cartridge, and control for winding and rewinding of the film based on an output of the perforation detection means. Film feed control means to perform Recording means for recording photographing information in a magnetic recording area of the film; reading means for reading recording information in the magnetic recording area of the film; an information operating member for setting / changing information recorded on the film; An operation unit including a photographing operation member for performing a photographing operation, and a desired frame which can be set by the information operation member to the predetermined frame by the recording unit so as to change information of the predetermined frame read by the reading unit. Magnetic recording rewriting means for rewriting information, wherein when the cartridge loading detecting means detects the loading of the cartridge, the cartridge information detecting means detects the information of the cartridge, and the information of the cartridge is In the case of the second information, a camera that prohibits a photographing operation by the photographing operation member is provided. To.

[3] The perforation detecting means includes an optical sensor for generating a signal in accordance with the perforation of the moving film sent from the film cartridge, and the first condition and the second condition are as follows: A camera as described in [2], wherein the level values of the threshold value when processing the output signal of the optical sensor are set to be different from each other.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on an embodiment of a camera according to the present invention with reference to the related drawings.

FIG. 1 shows a configuration of a magnetic recording / rewritable camera as one embodiment of the present invention.

In this camera, the operation of the entire camera is controlled by a microcomputer (hereinafter abbreviated as a microcomputer) 11. The microcomputer 11 displays a photometric circuit 12 having a known configuration, a distance measuring circuit 13, a shutter control mechanism 14, a focus adjustment mechanism 15, and various information such as shooting information, date, and operation mode of the camera. A display circuit 16 for storing the number of frames of the film, adjustment data of the camera, and the like are stored as shown in FIG.

Various switches are connected to the microcomputer 11. For example, a release switch (RELSW) 18 for starting an exposure operation, a rewind switch (REWSW) 19 that is operated when rewinding a film that has been photographed to a patrone, and “on (ON) when the patrone is loaded into the camera. ON) ", a cartridge detection switch (PTSW) 20, a power switch (PWSW) 21 linked to the power supply of the camera, and a print number setting switch (PQSW) for setting print number data which is one of magnetic data. 22 and a rewrite switch (RWRSW) 23 operated when the magnetic recording operation is performed again.

Further, in addition to operation buttons for driving a zoom device (not shown), a zoom-up switch (ZUSW) 71 and a zoom-down switch (ZDS) as shown in FIG.
W) 72, a language switch (ST1SW) 73 which is an operation button for changing language code data of a title which is one of magnetic data, a title switch (ST2SW) 74 for selecting a desired title, and a screen size. A panorama switch (PAN SW) 75 that switches in conjunction with an operation lever (not shown) for alternately switching between “standard” and “panorama” is connected.

In particular, ZUSW71 and ZDSW72
Is used for "frame advance" and "frame rewind" operations of the film when the developed film is loaded. Also,
The magnetic head 24 is used for recording data on the magnetic layer on the film 25 and detecting that data is recorded on the magnetic layer on the film 25.

By controlling the magnetic recording circuit 39 by the microcomputer 11, data can be recorded on the film 25 by the magnetic head 24. Also, the magnetic detection circuit 40
Is controlled, it is possible to detect whether or not data exists on the film 25.

It should be noted that the technique of recording data on the magnetic layer on the film 25 by the magnetic head 24, the technique of detecting the data, and the winding up and rewinding of the film 25 by one frame are performed by the present applicant. The details of this application are described in the aforementioned Japanese Patent Application No. 8-184904, and a description thereof will be omitted.

The above film 25 also illustrated in FIG.
Is provided with a perforation for defining and detecting the position of the film. (Note that details of perforation are described later in FIG. 3 with reference to 25a).
Such perforations are detected by a photo reflector (hereinafter abbreviated as PR) 26. In addition, a photo interrupter (hereinafter abbreviated as PI) 27
Measures the moving amount and moving speed of the film 25. At this time, the disk with slit 28 rotates in conjunction with the movement of the film 25, and changes the output signal of the PI 27. A predetermined bar code 30 is formed on a spool shaft (rotation shaft) of the cartridge 29. The barcode 30 describes, for example, the sensitivity of the film 25 and the number of shots. The data of the barcode 30 is detected by the PR 31.

Further, the initial position of the spool shaft can be detected from the signal of the bar code 30. By detecting the initial position, the cartridge 29 loaded in the camera can be detected as "unexposed".
It is possible to determine whether the cartridge state is “partially exposed”, “exposed”, or “developed”.

The output signals of the PR 26, PI 27, and PI 31 are converted into signals that can be input to the microcomputer 11 by a signal processing circuit 32. The output signal of the PR 26 is output to an input port P-PR, and the output signal of the PI 27 is an input signal. The signal is output to port P-PI, and the output signal of PR31 is output to input port P-BPR.

The control of winding and rewinding of the film 25 is performed by a motor connected to a film feeding mechanism 34 via a drive circuit 33. The film feeding mechanism 34 will be described later.

Next, the film feeding mechanism 3 of the present camera
2 will be described with reference to FIG. 2. FIG. 2 is a perspective view of the film feeding mechanism 34 seen from behind the camera. The state of the film feeding mechanism 34 shows a state immediately after the film cartridge 29 is loaded in the camera body. It is a thing.

A pinion gear 42 is provided on an output shaft of a film winding / rewinding motor (M1) 41 provided in the camera body.
It is in mesh with the sun gear 43. Furthermore, this sun gear 4
3 is in mesh with the planetary gear 44,
Are supported by the gear arm 45 so as to revolve around the rotation axis of the sun gear 43.

A take-up spool 46 for taking up a film is rotatably provided in a film take-up chamber provided on the right side as viewed from the rear of the camera body. A spool gear 47 that meshes with the planetary gear 44 when the planetary gear 44 revolves counterclockwise is integrally provided on the upper end surface of the take-up spool 46. The film pressing plate 48 is a member for pressing the film against the winding spool 46 by the tension of the spring 48a.

An idle gear 49 is provided at a position where the planet gear 44 meshes with the planet gear 44 when the planet gear 44 revolves clockwise. This idle gear 49 is
Via gears 50, 51, 52, a coupler gear 5 described later
3 On the left side as viewed from the rear of the camera body, there is a cartridge storage chamber for storing the cartridge 29. Above the cartridge storage chamber, there is a coupler 55 having a tip projecting in a "-" shape. A coupler gear 53 is rotatably provided. Here, looking at the recording state of the developed cartridge film 25 conceptually shown in FIG.
Engages with a groove provided on the upper end surface of the feed spool 57 provided in the cartridge 29, and is wound around the feed spool 57 integrally with the feed spool 57 by clockwise rotation.

The camera main body is provided with a film feed motor (M2) 58. A pinion gear 59 is provided on an output shaft of the film delivery motor 58,
This pinion gear 59 meshes with the sun gear 60,
Further, the sun gear 60 meshes with the planetary gear 61. The planet gear 61 is supported by a gear arm 62 so as to revolve around the rotation axis of the sun gear 60. Since the tension of the spring 63 acts on the gear arm 62,
The planetary gear 61 and the idle gear 52 mesh only when the film feed motor 58 (M2) rotates counterclockwise. The film 25 is exposed with light from the opening 64 of the camera body.

The PR 26 is for detecting perforations provided on the film 25. A reflector 26 'having a mirror-finished surface is provided at a position facing the PR 26 with the film 25 interposed therebetween. The reflector 26' has a light projected from a light emitting portion of the PR 26. Is efficiently reflected and enters the light receiving portion of the PR 26.

Here, the relationship between the perforation 25a of the film 25, the sensor output of the PR 26 and the output of the signal processing circuit 32, that is, the input signal of the P-PR will be described with reference to FIG. The perforations 25a, the places other than the perforations 25, and the sensor outputs of the PR 26 have waveforms having the relationship shown in the figure. However, the sensor output does not directly appear on the P-PR, but is shaped by the signal processing circuit 32 and becomes a signal convenient for the microcomputer 11. Here, the microcomputer 11 sets in advance the signal processing circuit 32 with a threshold level having two types of hysteresis characteristics, Hi-going (rising pass level: upper limit) and Lo-going (falling: lower limit). Therefore, as shown in FIG. 4, the output signal is inverted when a threshold (ie, threshold value) exceeds a predetermined level.

In the perforation 25a of the film 25 before development, since a reflection plate 26 'is provided at a position facing the PR 26, a sufficiently high level signal is returned from the sensor output. However, the amount of light reflected by the non-perforated portion, that is, the film base and the emulsion is reduced, and the sensor output shows a low signal level.

Perforation 2 of film before development
5a, the relationship between the perforation 25a of the developed film, the sensor output and the P-PR is shown in FIG.
This will be described with reference to (a), (b), (c), and (d).

First, FIGS. 5A and 5B show signal output examples before and after development of a negative film. After the development of the negative film, only the base color remains on the outside of the exposed surface of the film, so that the light emitted by PR26 is transmitted therethrough, reflected by the reflection plate, passes through the film, and enters the light receiving sensor of PR26. The signal level of the light-shielded portion is higher than before. Therefore, it cannot be detected as a threshold level before development. In this case, detection can be performed by raising the determination threshold (see FIG. 5).
(B)).

Further, in the case of a positive film (reversal) film, since the light transmittance of the outside of the exposed surface before and after development does not change so much, it can be detected without changing the threshold (FIG. 5 ( a) (b)).

FIGS. 6A and 6B are waveform diagrams showing the case where the detection method is applied without changing the threshold value in the same situation as in FIG. 5B.

FIG. 6 (a) shows that the sensor output changes above the set threshold and no detection is possible. However, this is because the intensity of the light emitted from the PR 26 is so strong that it is not possible to distinguish between the perforations and the portions that are not, so reducing the light intensity causes the sensor output to pass through the threshold level. Naturally, the sensor output in the perforation part also decreases in order to reduce the amount of light.

A set of perforations 25a is provided at the upper right and upper left of the exposure area 25b in each frame of the film 25 as shown in FIG. Also, as shown in FIG. 2, the magnetic head 24 is disposed near the opening 64, and faces the magnetic head 24 so that the film 25
Are padded as shown in the figure so as to sandwich them. The pad 65 is fixed to an L-shaped leaf spring 66 and pressed against the film 25 fed by the tension of the spring. The magnetic head 24 can access a recording area 25c provided below the exposure area 25b of the film shown in FIG. 3 to record / reproduce the data.

The roller member 67 shown in FIG. 2 is a cylindrical member whose outer periphery is formed of rubber or the like, and rotates in conjunction with the movement of the film 25. This roller member 6
Since a disk 28 with a slit as shown in the figure is integrated with the axis of rotation of the rotary shaft 7, the disk 28 with a slit also rotates with the rotation of the roller member 67. Each time the slit of the slit disk 28 crosses the PI 27, the PI 27 outputs a signal serving as a reference for the timing of the recording operation.

Next, the operation procedure of the camera according to this embodiment will be described. The flowcharts shown in FIGS. 7 to 9 refer to a main routine relating to the operation control of the camera of the present invention. The operation of each member will be sequentially described with reference to each constituent member in FIG.

First, when the power of the camera system is turned on, the microcomputer 11 is reset by power ON. Then, the microcomputer 11 performs initialization of the I / O port, initialization of a predetermined memory, and the like (S1).

Subsequently, in step S2, the microcomputer 11 determines the state of the cartridge detection switch (PTSW) 20 (S2). If PTSW20 is "OFF"
Changes from "ON" to step S3,
The initial position of the spool shaft is detected from the barcode 30 (S3). Whether the state of the film cartridge 29 is “unexposed”, “partially exposed”, “exposed” or “developed” can be determined in the subsequent step S5.

Next, information on the film sensitivity and the number of frames and whether the film is a negative film or a positive film are read from the barcode 30 (S4).

In step S5, it is first determined whether or not the film in the cartridge is "exposed" (S5).
If the film is "exposed", the "release lock process" (S6) is performed, and then the above-described step S2 is performed.
Return to

On the other hand, if all of the films are not "exposed", the process goes to step S7 to determine whether the film is "negative" / "positive" by the method described with reference to FIG.
A "threshold setting" subroutine, such as selecting a threshold of a sensor for detecting perforation based on "undeveloped" / "developed", is called.

Here, the threshold setting, that is, the "threshold setting" routine will be described in detail with reference to FIG. 10. First, it is determined whether the loaded cartridge is "developed" or not ( S70) If the image has been developed, the process proceeds to step S74. If the image has not been developed, the process proceeds to step S71.

In step S71, it is determined whether the film is "negative" or "positive" (S71). If the film is a "negative" film, the threshold level corresponding to the undeveloped negative film is determined by the signal processing circuit 32. Is set (S72). On the other hand, in the case of a "positive" film, the threshold level corresponding to the undeveloped positive film is set in the signal processing circuit 32 (S73).

If it is determined in step S70 that the film is a developed film, a threshold level suitable for the developed negative / positive is set in the signal processing circuit 32 in the same manner (S75, S76).

The above-mentioned threshold level is a value adjusted and set at the time of shipment from the factory, and may be stored in the storage circuit 17 in advance. Further, the data may be stored in the RAM in the microcomputer 11 from the storage circuit 17 in the initial setting process in step S1.

Subsequently, at step S8, at step S8
Based on the threshold set in step 7, the film is fed out of the cartridge, and a so-called “idle feed” operation for setting the first frame is performed to set the film at the initial position.

It is determined whether or not the loaded cartridge is "partial exposure" (S9). If it is "partial exposure", the process proceeds to step S10.
In the case of an "unexposed" film or a "developed" film, the first frame is set, and then the step S11 is performed.
Move to.

In step S10, in the case of a "partially exposed" film, a process of detecting the presence or absence of magnetic recording data and setting an unexposed frame is performed (S10). Thereafter, the flow returns to step S2 to repeat the same processing loop.

If it is determined in step S9 that the film is not a "partially exposed" film, it is determined in step S11 whether the film is a "developed" film (S11). If it is not a "developed" film, the film can be determined to be in an "unexposed" state, and the process proceeds to step S2. On the other hand, if the film is "developed", the subroutine "detection winding" is executed, the magnetic data of the first frame is detected and displayed on the display circuit 16, and then step S is executed.
Move to 45.

If there is no change in the state of the PTSW 20 in step S2, the microcomputer 11 determines the state of the rewind switch (REWSW) 19 (step S2).
13).

Here, when the REWSW 19 changes from "OFF" to "ON", the threshold level of the perforation detection sensor PR26 is set (S14).
An operation of rewinding the film 25 to the cartridge 29 is performed (S15).

Then, release lock processing is performed (S
16) Then, the process returns to the step S2 to repeat the same processing.

On the other hand, if there is no change in the REWSW 19, the process proceeds to step S19 in FIG. 8 to be described later, and the state of the power switch (PWSW) 21 is determined (S19). If the PWSW 21 is "OFF", the process returns to step S2, and the microcomputer 11 repeats the main routine. On the other hand, when the PWSW 21 is “ON”, the process proceeds to step S20.

The microcomputer 11 has a temperature measuring circuit 38
The microcomputer 11 receives the temperature data from the microcomputer 11 based on the luminance data received from the photometric circuit 12 and the sensitivity data read in the step S7.
Calculates a shutter speed Tv and an aperture value Av to perform a photometric operation (S21). Then, a display operation of displaying the calculated stutter speed Tv and aperture value Av on the display circuit 16 is performed (S22).

Next, the microcomputer 11 determines the state of the release switch (RELSW) 18 (S23).
If there is no change in the ELSW 18, step S30
Move to. On the other hand, when the RELSW 18 is "ON", the microcomputer 11 calculates the distance to the subject (subject distance) based on the data output from the distance measuring circuit 13 and performs the distance measuring operation (S24). Then, the focus adjustment is performed by controlling the focus adjustment mechanism 15 based on the data of the subject distance (S25), and further, the Tv value and Av already calculated.
The exposure operation to the film 25 is performed by controlling the shutter control mechanism 14 based on the value (S26).

When a series of exposure operations is completed as described above, the microcomputer 11 creates data to be recorded on the magnetic layer of the film 25 (S27).

Here, as an example, Table A (FIG. 19) shows a symbol table of data to be recorded. All of these data are converted into ASCII codes and recorded according to the order shown in Table A. They are arranged from the top in the order recorded on the film. The symbols indicate, in order from the left, the address of the RAM of the microcomputer 11, the contents thereof, the range of possible values, and whether or not the rewriting can be changed. D-YEAR, D-MONTH, D-DAY, D-
HOUR and D-MiNUTE cannot be changed with the date and time when the image was taken. D-TV, D-AV, D-GV, D
-The BV cannot be changed with the information at the time of shooting.

On the other hand, in the camera of the present invention, the item denoted by reference numeral 90 is rewritable. That is, D-ST1 is the language information of the title to be imprinted in the lab during printing,
The user can make changes while viewing the display with the operation buttons of the camera.
D-ST2 is the code information of the title to be imprinted in the lab at the time of printing, and can also be changed while viewing the display with the operation buttons of the camera. D-ASP is "Normal" when printing
This information indicates whether the panorama is set or not, and the screen mask in the finder is switched in conjunction with an operation lever (not shown) of the camera, and is set in the RAM of the microcomputer 11 when recording data is created according to the state. D-PQ is information for designating the number of additional prints in a lab at the time of printing, and can be arbitrarily changed while viewing the display with the operation buttons of the camera.

Subsequently, in step S28, a threshold (that is, a threshold) for detecting perforation is set as preparation for winding one frame (S28). In the next subroutine "Single-frame winding",
The film 25 is wound up by one frame, and the data created in step S27 is magnetically recorded.

Next, in step S30, when the ZUSW 71 is "ON", the zoom device (not shown) is driven in the telephoto direction to zoom up (S31). On the other hand, if there is no change in the ZUSW 71 in step S30, the process proceeds to step S32. If the ZDSW 72 is "ON", the zoom device is driven in the wide direction to zoom down (S33), and step S34 is performed. Proceed to. on the other hand,
If there is no change in the ZDSW 72 in step S32, the process proceeds to step S34.

In step S34, the change of ST1SW73 is determined, and if ST1SW73 changes from "OFF" to "ON", ST1 change processing is performed (S3).
5) The process proceeds to step S36, while the ST1SW7
If there is no change in 3, the process proceeds to step S36. This ST1 change process is a process for changing magnetically recorded data, which is a language code of title data to be imprinted during printing. Each time the switch is pressed once, the language code is incremented by "1" (+1)
Then, when the value exceeds a predetermined value, the process returns to the initial value.

In step S36, the change of ST2SW74 is determined. If ST2SW74 changes from "OFF" to "ON", ST2 change processing is performed (S3
7) The process proceeds to step S38, while the SR2SW7
If there is no change in No. 4, the process proceeds to step S38. In addition,
This ST2 change process is a process for changing the magnetically recorded data which is the title code of the title data to be imprinted at the time of printing. Each time the switch is pressed once, the title code is incremented by "1",
When the value exceeds a predetermined value, the process returns to the initial value.

In step S38, a change in the PQSW 22 is determined, and if the PQSW 22 changes from "OFF" to "O"
N ”, a PQ change process is performed (S39),
Proceed to step S40. On the other hand, in step S38, P
If there is no change in the QSW 22, the process proceeds to step S40.
The PQ changing process in step S39 is a process for changing data to be magnetically recorded, which is data for specifying the number of reprints at the time of printing. Each time the PQSW 22 is pressed once, the PQ data is incremented by "1", and when the PQ data exceeds a predetermined value, the PQ data is returned to the initial value.

In step S40, RWRSW2
3 is determined, and if the RWRSW 23 changes from "OFF" to "ON", the following "rewrite processing" is performed (S41 to S44). The rewriting process is a process of overwriting data recorded on the film again, and is a process of rewinding the film by one frame, and then changing the data to be recorded and winding up the magnetic recording. First, a threshold necessary for detection of perforation is set (S41).
Is rewinded by one frame (S42), and data to be recorded is created (S43). Subsequently, one frame is wound up, and at the same time, recording is performed on the film based on the data created in step S43 (S44). The data that can be changed are the title language code (D-ST1) and the title code (D-ST1) among the data to be recorded shown in Table A.
SR2), aspect information (D-ASP), and the number of additional prints (D-PQ).

If there is no change in the RWRSW 23 in the step S40, or after the step S44 ends, the process returns to the step S2 (FIG. 7) again to repeat the above processing steps.

Next, FIG. 9 illustrates the subsequent processing steps that have been shifted from step S12 in FIG. Here, the process proceeds to step S45 after the detection of the presence of the developed film in step S11. That is, the processing of steps S45 to S67 is performed only when the developed film is loaded, and the processing loop of steps S45 to S67 is repeated until the film is rewound. Therefore, the release operation cannot be performed from this processing loop, so-called “relays lock”.
Since the camera is in the state, the user of the camera cannot perform a photographing operation by mistake.

First, at step S45, REWSW
19 is determined (S45). If REWSW19
Changes from "OFF" to "ON", the process proceeds to the subsequent step S46. Steps S46 to S48 are processing steps equivalent to steps S14 to S16 described above, and thus detailed description is omitted here. After the end of this series of processing steps, the flow shifts to step S2 (FIG. 7) described above, and similar processing is repeated.

On the other hand, in step S45, REWSW
If there is no change in 19, the process proceeds to step S49, and the frame advance processing of the developed film is performed in steps S49 to S51. However, frame advance processing cannot be performed on the last frame. Specifically, first, a change in ZUSW 71 is determined (S49), and if ZUSW 71 is changed from “OFF” to “O”
If it has changed to "N", a threshold for perforation detection is set (S50), magnetic data on the film is detected by a subroutine "winding up", and a display output is performed (S51), and the process proceeds to step S52. . On the other hand, if there is no change in the ZUSW 71 in step S49, the process proceeds to step S52.

In steps S52 to S56, a frame return process of the developed film is performed. However, frame return processing cannot be performed on the first frame. Since the magnetic recording data on the developed film can be read only in the winding direction, the information of the previous frame can be read by rewinding two frames and reading while winding. Specifically, first, a change in the ZDSW 72 is determined (S52), and if there is no change in the ZDSW 72, the process proceeds to step S57. On the other hand, this ZDSW 72 is “OFF”
When the state changes from "ON" to "ON", a threshold is set for perforation detection (S53), and then the subroutine "1 frame rewind" is continuously executed twice to rewind the film by 2 frames (S53). S54, S55). Then, a subroutine "detection winding" is executed to detect and display and output the magnetic data on the film (S56). Thereafter, the process proceeds to the next step S57.

Steps S57 to S to be executed next
Step 67 is a processing step equivalent to steps S34 to S44, and a detailed description thereof will be omitted. If there is no change in the RWRSW 23 in step S63,
Alternatively, after the end of the series of steps S64 to S67, the process returns to step S45 to repeat the same processing steps.

The flowchart shown in FIG. 11 shows the operation of the above-described subroutine "1 frame winding". By executing this subroutine, the exposed film can be wound up by one frame. Further, during the execution of this subroutine, the magnetic recording operation can be executed by utilizing the interrupt function of the microcomputer 11.

When the subroutine "single frame winding" is started, the microcomputer 11 first stores the parameters related to magnetic recording, winding and rewinding, and the motor (M
1) The control parameters of 41 are read (S130), and the registers PICNT and PRCNT are cleared (←).
0) is performed (S131). This PICNT is P12
7 is a register for counting the pulse signal output, and PRCNT is a register for counting changes in the signal of PR26.

Subsequently, the microcomputer 11 controls the motor (M1)
The application voltage (Vm1) of the motor 41 is set (S132), and the motor (M1) 41 is turned on (S133). This operation is performed at the timing of * 1 on the timing chart shown in FIG. 12, whereby the film 25 starts to move.

Immediately after the motor (M1) 41 is turned on, a current is supplied to the magnetic head 24 in the (+) direction (S1).
34), the counting of the first timer counter (T1) is started (S135). The first timer counter (T1) is used to measure the interpulse of the pulse signal of the PI 27. The interval of the pulse signal is indicated by T1 on the timing chart of FIG.

Next, in step S136, the microcomputer 11 determines whether or not a PI pulse has been input based on the state of the input port P-PI (S136). The data of the counter (T1) is recorded in the register TFV (S137), and the value of the first timer counter (T1) is cleared to zero (← 0) in order to measure the interpulse of the pulse signal (S13).
8).

Subsequently, the data recorded in the register TFV is searched as its table address, and the parameters Tbitf and Tbitr necessary for magnetic recording are read from the data table existing in the program memory (S13).
9).

Then, the microcomputer 11 multiplies the Tbitf read from the data table by the correction value Cf, and
Then, Tbitr is multiplied by the correction value Cr and stored in TBR (S140). The correction values Cf and Cr
Is the value read from the storage circuit 17 in step S30.

Next, the microcomputer 11 increments the register PICNT for counting the number of PI pulses (+
1) (S141), and determine whether PICNT is equal to a predetermined number PST (S142). However, this predetermined number PST
Corresponds to the timing indicated by * 2 in the timing chart of FIG. 12 indicating the magnetic recording start position on the film. Note that the predetermined number PST is calculated in step S130.
Is read from the storage circuit 17 at

At step S142, the PICN
If T is equal to PST, the process proceeds to step S143 to start magnetic recording, and the start address #ADst of data to be magnetically recorded is set in the register ADRS (S14).
3). Subsequently, the data at the address specified by ADRS is read out and stored in the register dataX (S144).
The data of taX is divided by one bit (S145),
It is determined whether the divided bits are "1" or "0" (S146).

In step S146, if the bit is "1", the second timer counter (T2)
The data of TBF is set to (S147), while "0" is set.
In the case of (1), the data of TBR is set to the second timer counter (T2) (S148). Thereafter, the counting operation of the second timer counter (T2) is started (S14).
9) The current direction of the magnetic head 24 is changed from (+) to (−).
(S150). This operation is performed at the timing of * 3 in the timing chart shown in FIG. Further, the second timer counter (T2) generates an interrupt request signal when the set time (TBR or TBF) has elapsed. This corresponds to * in the timing chart shown in FIG. When this signal occurs, interrupt processing is performed.

In the above-described interrupt processing, in order to reverse the direction of the current of the magnetic head 24 and generate the next interrupt request signal, the second timer counter (T2) receives the TBF according to the data to be magnetically recorded. Or set TBR. These TBF and TBR are calculated in steps S136 to S1.
Because it changes according to the film speed by the process of 49,
The film speed and the magnetic recording speed move in conjunction. Therefore, even if the film speed changes, the recording density does not change. The above is the processing in the microcomputer 11 performed when the PI pulse is input.

Next, the processing when the perforation provided on the film 25 is detected will be described. That is, when the PI pulse signal is not input in the step S136, or when the register PICNT is not equal to the predetermined number PST in the step S142, or after the processing in the step S150, the process proceeds to the next step S151.

In step S151, the microcomputer 11 determines whether there is no change in the signal of PR26 from the input port P-PR (S151). Here, when a change is detected, a register PR for counting signal edges of PR26 is used.
CNT is incremented (+1) (step S15)
2). Subsequently, it is determined whether or not the value of PRCNT is equal to # 2 (step S153), and if it is equal to # 2, the process proceeds to step S154. On the other hand, if it is not equal to # 2, the process proceeds to step S157 described later.

Here, when the signal indicated by * 4 in the timing chart of FIG. 12 is detected, it is understood that the film winding operation is nearing the end. Therefore, it is necessary to reduce the speed in order to easily stop the film. It is also necessary to terminate magnetic recording. This is because a gap is provided between the area where the magnetic data of the next frame is recorded and the current recording area for convenience in reproducing magnetic data.

In step S154, the microcomputer 11 stops the operations of the first timer counter (T1) and the second timer counter (T2). As described above, by stopping the second timer counter (T2), the interruption request signal is not generated, and the magnetic recording is stopped. Further, since it is not necessary to measure the time interval of the PI pulse, the first timer counter (T1) is also stopped.

Subsequently, the motor (M1) 41 is supplied for a predetermined time (for example, Ts1 on the timing chart shown in FIG. 12).
Only apply the short brake (S155) and the motor (M
1) The applied voltage of 41 is decreased (Vm2 on the timing chart shown in FIG. 12) (S156). As described above, the speed of the film 25 is rapidly reduced by reducing the short brake and the voltage. Thereafter, in step S151, when there is no change in the signal of PR26, the process returns to step S136, and the processing in step S136 and thereafter is repeated.

Also, in step S153, the PR
When the value of CNT is not equal to # 2, it is determined whether or not the value of PRCNT is equal to # 4 (S157).
If it is not equal to 4, the process returns to step S136. on the other hand,
When it is equal to # 4, the winding operation ends, and the microcomputer 11 stops the current to the magnetic head 24 (note that
This corresponds to * 5 in the timing chart shown in FIG. 12) (S158).

Subsequently, the short brake is applied to the motor (M1) 41 for a predetermined time (Ts2 on the timing chart shown in FIG. 12) (S159). Further, a negative voltage is applied to the motor (M1) 41 for a predetermined time (ie, TR in the timing chart shown in FIG. 6) (S16).
0). Further, the short brake is applied to the motor (M1) 41 for a predetermined time (Ts3 in the timing chart shown in FIG. 12) (S161).

As described above, steps S159 to S16 are performed.
According to the processing procedure 1, the film 25 is completely stopped.
Therefore, finally, the frame number counter is incremented by "1" (S162). As described above, the winding of one frame is completed, and the process returns from this subroutine (S163).

Vm1 and Vm, which are parameters related to speed control on the timing chart shown in FIG.
2, Ts1, Ts2, Ts3 and TR are stored in the storage circuit 17 in advance.
It is desirable to memorize it. By doing so, it is possible to set optimal parameters in accordance with the characteristics of the individual film feed mechanisms 34 in manufacturing and the environment in which the camera operates.

FIG. 13 is a flowchart showing a subroutine "detection winding". First, a subroutine "magnetic read winding" described below is executed, and data recorded on the film is stored in a register inside the microcomputer 11 (S80). Next, in order to match the data to be displayed with the frame number counter, a value obtained by subtracting "1" from the frame number counter is set (S81). The normal frame counter displays the number of frames that have been wound up and prepared for shooting.
In the "detection winding up" routine, the information read at the time of winding up is displayed, so the display data is the information of the previous frame.

The data stored in the register of the microcomputer 11 in step S80 is developed in the data register as shown in Table A (FIG. 19) (S82). Then, the contents of the data register are displayed on the display circuit 16 (S8).
3), the subroutine "detection winding" is ended and the routine returns.

FIG. 14 shows the operation of the above-mentioned subroutine "magnetic read winding". In this subroutine, pre-recorded magnetic data is read and data is created while winding up the developed film by one frame.

When this subroutine "magnetic read winding" is called and started, the microcomputer 11 reads parameters related to magnetic recording and control parameters of the winding and rewinding motor (M1) 41 from the storage circuit 17 (S2).
30) Then, the registers PICNT and PRCNT are cleared to zero (S231). PICNT is PI2
7 is a register for counting the pulse signals output, and PRCNT is a register for counting changes in the signal of PR26.

Subsequently, the microcomputer 11 controls the motor (M1)
The application voltage (Vm1) of the motor 41 is set (S232), and the motor (M1) 41 is turned on (S233). This operation is performed at the timing of * 1 in the timing chart shown in FIG. 15, whereby the film 25 starts to move.

Next, the magnetic detection circuit 40 is turned on (S
234), wait for the Ji pulse signal, which is the output signal of the magnetic detection circuit 40, to fall (S235), and start the counting operation of the timer counter (T1) (S23).
6).

Here, the relationship between the Ji pulse signal and the data will be described with reference to FIGS. 16 (a) and 16 (b).
When the read signal represents "0", the relationship between the falling and the rising of the Ji signal pulse is as shown in the chart of FIG.
The TCB up to the rise, which is determined by the timing of the rise during that period. Therefore, when the relationship between the time TCA from the fall to the rise and the above TCB is TCA <1 / 2TCB, it is determined that the data is "0". Also,
When a signal having the relationship shown in FIG.
Since CA ≧ 1/2 TCB, the data is determined to be “1”.

When the rise of the Ji pulse signal is detected in step S237 of FIG. 14, the flow advances to step S238 to store the counter value of the timer counter (T1) in the register TCA (S238), and then to step S239. On the other hand, if the rise of the Ji pulse signal has not been detected in step S237, the process proceeds to step S239.

In step S239, the falling edge of the Ji pulse signal is detected (S239). If there is no change in the Ji pulse signal, a step S2 to be described later is executed.
It moves to 51. On the other hand, when the falling edge of the Ji pulse signal is detected, the counter value of the timer counter (T1) is stored in the register TCB (S240), and the timer counter (T
1) is reset and restarted (S241).

Next, at step S238, the register TCA
And the timer counter value stored in step S240
In step S242, the value obtained by multiplying the timer counter value stored in the register TCB by 1/2 is compared and determined. If TCA ≧ 1/2
In the case of TCB, the flow shifts to step S44, and since the Ji pulse signal indicates "1" of data, "1" is set in bitx.
Is set (S244). On the other hand, if TCA <1 / 2TCB, the flow shifts to step S243 to set bitx to "0" because the Ji pulse signal represents "0" of data (S243).

Next, datax is created from the bitx set in steps S43 and S44 (S245).
Data is composed of 8-bit data.
Since one bitx is created, when one byte of data is created, it is stored in a predetermined register (S24).
6).

The following steps S251 to S262 are equivalent processing steps corresponding to steps S151 to S162 in FIG.

FIG. 17 is a flowchart showing the operation procedure of the subroutine "1 frame rewind". That is, when this subroutine "1 frame rewind" is called and started, the microcomputer 11 first stores the memory circuit 1
The control parameters of the hoisting / rewinding motor (M1) 41 are read from S7 (S100). Further, the register PRC
NT is cleared to zero (S101). Note that this register PRCNT is a register for counting changes in the signal of PR26.

Subsequently, the microcomputer 11 controls the motor (M1) 41
The applied voltage (Vmlr) is set (S102), and the motor (M1) 41 is turned ON so as to rotate counterclockwise (S103). Thus, the film 25 starts moving in the rewinding direction.

The microcomputer 11 ignores the P-PR signal (that is, the signal corresponding to P1 and P2 in FIG. 18) which may appear at the beginning of rewinding for a predetermined time, so that the motor (M1 ) Standby while 41 is ON (S104).

Next, in step S105, the microcomputer 1
1 judges whether there is no change in the signal of PR26 input to the input port P-PR (S105). here,
This detection / determination is repeated until there is any change in the signal of PR26, and if a signal change occurs, the process proceeds to the next step S106, where PRCNT is incremented (+1).

Further, the microcomputer 11 determines whether or not the value of PRCNT is equal to # 2 (S107).
When the value of NT is equal to # 2, the motor (M1) 41
The short brake is applied for a predetermined time (Tslr) (S108). FIG. 18 shows a timing chart during the operation of this subroutine "1 frame rewind". The operation in step S108 corresponds to * 11 on the timing chart.

Subsequently, the microcomputer 11 controls the motor (M1) 4
A voltage change is performed to lower the applied voltage to 1 to a predetermined value (Vm2r) (S109), and thereafter, the flow returns to step S105 to repeat the same processing steps.

The film speed is reduced by the braking by the processing operations in steps S108 and S109.

Further, the perforation P3 is PR26.
, The value of PRCNT becomes # 2. Therefore,
In step S107, the value of PRCNT is # 2
If not, the microcomputer 11 further sets PRCNT
Is determined to be equal to # 4 (S110),
If the value of PRCNT is not equal to # 4, the process returns to step S105 and the same processing steps are repeated.

On the other hand, when the value of PRCNT is equal to # 4, the flow shifts to step S111. When the perforation P4 passes through PR26, the value of PRCNT becomes # 4. At this time, the process shifts from step S110 to S111.

The processing in step S111 corresponds to * 12 in the timing chart, and the microcomputer 11 applies a short brake to the motor (M1) 41 for a predetermined time (Ts2r) (S111). Subsequently, the microcomputer 11 applies a positive voltage to the motor (M1) 41 for a predetermined time (TRr) (S112), and further applies a positive voltage to the motor (M1) 41 for a predetermined time (Ts3r).
Short brake is applied to the motor (M1) 41 (S
113). The film is completely stopped by a series of processing steps of these steps S111 to S113.

Finally, the register for counting the number of frames is decremented by "1" (-1) (S114), and this subroutine is terminated and the routine returns.

Note that these are control parameters of the motor (M1) 41. Vm1r, Vm2r, T1, Ts1r, Ts2r
, Ts3r and TRr are desirably stored in the storage circuit 17 in advance. Thereby, the film feeding mechanism 3
The optimum parameters can be set in accordance with the manufacturing characteristics of No. 4.

(Modification) In the first embodiment described above,
In order to detect the perforation of the undeveloped film and the developed film, the threshold (threshold) level of the sensor output signal of the PR 26 is changed, the waveform is shaped in the signal processing circuit 32, and the microcomputer 11 easily detects the waveform. Although the processing is performed after conversion into signals, as described in FIG. 6, it is also possible to appropriately change the LED current of the PR 26 before driving the film.

In addition, various modifications can be made without departing from the scope of the present invention.

As described above, the present invention has been described based on one embodiment. However, the present invention includes the following invention. That is, [1] in a camera using a film cartridge capable of outputting predetermined discrimination information according to a use state of a film to be accommodated, cartridge information detecting means for detecting the discrimination information of the loaded film cartridge; A signal is generated in accordance with the perforation of the film which is sent and moved from the film cartridge, and a predetermined perforation signal is processed in accordance with the discrimination information of the film cartridge by the cartridge information detecting means to detect the perforation. A camera comprising: a perforation detecting means for performing the film feeding control; and a film feeding control means for controlling a feeding movement of the film based on an output of the perforation detecting means.

[2] In a camera using a film cartridge having predetermined discrimination information according to the use state of the film to be accommodated, cartridge loading detecting means for detecting loading of the film cartridge, Cartridge information detecting means for detecting the discrimination information, and when the information of the film cartridge by the cartridge information detecting means is predetermined first information, based on a first condition, and based on predetermined second information, In this case, based on the second condition, perforation detection means for detecting perforation of the film sent from the film cartridge, and control for winding and rewinding of the film based on an output of the perforation detection means. Film feed control means to perform Recording means for recording photographing information in a magnetic recording area of the film, reading means for reading recording information in the magnetic recording area of the film, an information operating member for setting / changing information recorded on the film, and a camera Operating means comprising a photographing operation member for performing a photographing operation of a predetermined frame which is set by the information operating member by the recording means in order to change information of a predetermined frame read by the reading means. And a magnetic recording rewriting means for rewriting information to be rewritten.When the cartridge loading detecting means detects the loading of the cartridge, the cartridge information detecting means detects the information of the cartridge and detects the information of the cartridge. When the information is the second information, a photographing operation by the photographing operation member is prohibited. Camera that.

[3] The perforation detecting means includes an optical sensor for generating a signal in accordance with the perforation of the film sent and moved from the film cartridge, wherein the first condition and the second condition are: The camera according to [2], wherein the threshold values for processing the output signal of the optical sensor are set to be different from each other.

The following inventions are also included.

(1) In a camera using a film cartridge capable of outputting discrimination information according to the state of a film to be accommodated, cartridge information detecting means for detecting the discrimination information of the loaded film cartridge; The perforation signal generating means for generating a signal in accordance with the perforation of the film transmitted and moved from the cartridge, and processing the perforation signal generated by the perforation signal generating means in accordance with the discrimination information of the cartridge by the cartridge information detecting means. And a perforation signal processing means for detecting perforation, and a film feed movement control means based on an output of the perforation signal processing means.

(2) Cartridge loading detecting means for detecting the loading of the film cartridge, information detecting means for detecting the information of the loaded cartridge, and the first information corresponding to the information of the cartridge. Means for storing the first condition in correspondence with the second information, and the first condition when the information of the cartridge detected by the information detecting means is the first information. And in the case of the second information, based on the second condition, a perforation detecting means for detecting the perforation of the film sent from the cartridge, and an output of the perforation detecting means, Film feeding control means for controlling film winding and rewinding feeding. When the loading of the cartridge is detected by the cartridge loading detecting means, the film feeding control by the film feeding control means is performed under the conditions of the storage means based on the information of the cartridge detected by the information detecting means. A camera characterized by the following.

(3) Cartridge loading detecting means for detecting loading of a film cartridge, information detecting means for detecting information of the loaded cartridge, and a first information corresponding to the information of the cartridge. Means for storing the first condition in correspondence with the second information, and the first condition when the information of the cartridge detected by the information detecting means is the first information. And in the case of the second information, based on the second condition, a perforation detecting means for detecting the perforation of the film sent from the cartridge, and an output of the perforation detecting means, Film feeding control means for controlling film winding and rewinding feeding, and magnetic recording of the film Recording means for recording photographing information in the area, and reading means for reading photographing information in the magnetic recording area of the film, wherein when the cartridge loading detecting means detects the loading of the cartridge, the information detecting means When the information of the cartridge is detected, and when the information of the cartridge is the second information, the film information is read by the reading means while controlling the film feeding by the film feeding control means. A camera characterized in that desired information can be rewritten on the same frame by using the camera.

(4) Cartridge loading detecting means for detecting the loading of the film cartridge, information detecting means for detecting the information possessed by the loaded cartridge, and the first information corresponding to the information possessed by the cartridge. Means for storing the first condition in correspondence with the second information, and the first condition when the information of the cartridge detected by the information detecting means is the first information. And in the case of the second information, based on the second condition, a perforation detecting means for detecting the perforation of the film sent from the cartridge, and based on an output of the perforation detecting means, Film feeding control means for controlling film winding and rewinding feeding, and magnetic recording of the film Recording means for recording photographing information in the area, reading means for reading photographing information in the magnetic recording area of the film, and display means for displaying information read by the reading means, wherein the cartridge loading detecting means When the loading of the cartridge is detected, the information of the cartridge is detected by the information detecting means. When the information of the cartridge is the second information, the film feeding control means controls the film feeding. A camera characterized in that the information on the film is read by the reading means and displayed on the display means, and then the desired information can be rewritten on the same frame by the recording means.

(5) Cartridge loading detecting means for detecting the loading of the film cartridge, information detecting means for detecting the information of the loaded cartridge, and the first information corresponding to the information of the cartridge. Means for storing the first condition in correspondence with the second information, and the first condition when the information of the cartridge detected by the information detecting means is the first information. And in the case of the second information, based on the second condition, a perforation detecting means for detecting the perforation of the film sent from the cartridge, and an output of the perforation detecting means, Film feeding control means for controlling film winding and rewinding feeding, and magnetic recording of the film Recording means for recording photographing information in the area; reading means for reading recorded information in the magnetic recording area of the film; operating members for setting / changing information recorded on the film; and operations for causing the camera to perform a photographing operation Operating means comprising a member, when the cartridge loading detecting means detects the loading of the cartridge, the information detecting means detects the information of the cartridge, and the information of the cartridge is the information of the second information. In this case, the photographing operation is prohibited, only the predetermined operation member of the operation means is accepted, the information read by the reading means is changed, and the desired information is re-read on the same frame by the recording means. A camera characterized in that writing is possible.

(6) The camera according to (2) to (5), wherein the storage means is a nonvolatile memory.

(7) The camera according to (2) to (5), wherein the first condition and the second condition are threshold levels of a sensor output for detecting film perforation.

(8) The first condition and the second condition are the amounts of light emitted from an optical sensor for detecting film perforation.
The camera according to (5).

(9) The predetermined first information of the cartridge is “unexposed” or “partially exposed”, and the second information is “developed”. (2)
The camera according to (5).

(10) The predetermined operation member is characterized in that at least one of change of title, change of print number, rewrite, frame advance, frame rewind or film rewind is operated. Camera.

(11) The information that can be changed among the information recorded on the film by the operation member is at least one of title information, print number information, and aspect information. Camera.

(12) Further, the information detecting means can detect whether the film of the cartridge is negative or positive, and the perforation detecting means switches the condition of the perforation detection according to whether the film is negative or positive. The camera according to (5), which is characterized in that:

[0136]

As described above, according to the camera of the present invention, by selectively selectively changing the transmittance of the film which changes before and after the development processing, the developed film can be obtained even in the range of the characteristic which can be detected by the sensor. Since the presence and position of the perforation of the film can be correctly detected, the information recorded on the magnetic recording layer of the developed film is read and written, so that the user can arbitrarily obtain information different from that at the time of shooting. Can be changed to In other words, the correct perforation can be detected according to the difference between the transmittances of the undeveloped film and the developed film. Therefore, by operating the corresponding switch or button, for example, the information such as the title language, title, aspect ratio, etc. It is possible to arbitrarily change the number of reprints and the number of reprints, and to provide a camera capable of arbitrarily and accurately changing magnetic recording in a developed film.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a magnetically rewritable camera as one embodiment of the present invention.

FIG. 2 is a perspective view of the film feeding mechanism as seen through from behind the camera.

FIG. 3 is a conceptual diagram showing a recording state of a developed cartridge film.

FIG. 4 shows film perforations and PR.
FIG. 4 is an explanatory diagram showing a relationship between a sensor output and an output from a signal processing circuit.

FIGS. 5A and 5B show differences in sensor waveform levels before and after film development. FIGS. 5A and 5B are waveform diagrams showing signal output examples before and after development of a negative film. FIGS.
(D) is a waveform diagram showing an example of signal output before and after development of a positive film.

FIG. 6 shows a case where a method for detecting perforation of a negative film is performed without changing the threshold value in the same situation as in FIG. 5B, and FIG. FIG. 3B is a waveform diagram of the light amount, and FIG.

FIG. 7 is a flowchart showing a main routine showing the operation of the camera of the present invention.

FIG. 8 is a flowchart of a main routine continued from FIG. 7;

FIG. 9 is a flowchart of a main routine continued from FIG. 7;

FIG. 10 is a flowchart showing a subroutine “threshold value setting” called in the main routine of FIG. 7;

FIG. 11 is a flowchart showing a subroutine “winding one frame” called in the main routine of FIG. 7;

FIG. 12 is a timing chart related to an operation of winding one frame.

FIG. 13 is a flowchart illustrating a subroutine “detection winding” called in the main routine of FIG. 9;

FIG. 14 is a flowchart showing a “magnetic read-up winding” subroutine called in the subroutine of FIG. 13;

FIG. 15 is a timing chart related to the operation of magnetic reading and winding.

FIG. 16 shows a relationship between a pulse signal and digital data. FIG. 16A shows a signal waveform representing bit 0,
(B) is a signal waveform representing bit 1.

FIG. 17 is a flowchart showing a subroutine “1 frame rewind” called in the main routine of FIG. 7;

FIG. 18 is a timing chart relating to rewinding one frame.

FIG. 19 is a list showing a symbol table of information corresponding to operation buttons.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Microprocessor, 12 ... Photometry circuit, 13 ... Distance measurement circuit, 14 ... Shutter control mechanism, 15 ... Focus adjustment mechanism, 16 ... Display circuit, 17 ... Storage circuit, 18 ... Release switch (RELSW), 19 ... Rewind switch (REWSW), 20: patrone detection switch (PTSW), 21: power switch (PWSW), 22: print number setting switch (PQSW), 23: rewrite switch (RWRSW), 24: magnetic head, 25: film, 26, 31 photoreflector (PR), 27 photointerrupter (PI), 28 disk with slit, 29 cartridge, 30 barcode, 32 signal processing circuit, 33 drive circuit, 34 film feed mechanism, 39: magnetic recording circuit, 40: magnetic detection circuit, 71: zoom Up switch (ZUSW), 72: Zoom down switch (ZDSW), 73: Language switch (ST1SW), 74: Title switch (ST2SW), 75: Panorama switch (PANSW), 90: Rewritable information items. S1 to S67: processing steps of a main routine of the camera operation; S70 to S76: processing steps of a subroutine "threshold setting"; S80 to S83: processing steps of a subroutine "winding up / display"; S100 to S114; S130 to S163: processing steps of subroutine "1 frame winding"; S230 to S263: processing steps of subroutine "magnetic reading / winding".

Claims (3)

[Claims] 1. A camera using a film cartridge capable of outputting predetermined discrimination information according to a use state of a film to be stored, cartridge information detecting means for detecting the discrimination information of the loaded film cartridge, A signal is generated in accordance with the perforation of the film which is sent and moved from the film cartridge, and a predetermined perforation signal is processed in accordance with the discrimination information of the film cartridge by the cartridge information detecting means to detect the perforation. A camera comprising: a perforation detecting unit that performs a film feed control unit that controls a feeding movement of the film based on an output of the perforation detecting unit. 2. A camera using a film cartridge having predetermined discrimination information according to a use state of a film to be accommodated, comprising: a cartridge loading detecting means for detecting the loading of the film cartridge; and a camera having the loaded film cartridge. Cartridge information detecting means for detecting the discrimination information; and if the information of the film cartridge by the cartridge information detecting means is predetermined first information, based on a first condition, and if the information is predetermined second information. Performs perforation detecting means for detecting perforation of the film sent from the film cartridge based on the second condition, and controls winding and rewinding of the film based on an output of the perforation detecting means. Film feed control means, Recording means for recording photographing information in a magnetic recording area of the film; reading means for reading recording information in the magnetic recording area of the film; an information operating member for setting / changing information recorded on the film; Operating means comprising a photographing operation member for performing a photographing operation; and desirably the information operating member can be set to the predetermined frame by the recording means in order to change information of the predetermined frame read by the reading means. Magnetic recording rewriting means for rewriting information, wherein when the cartridge loading detection means detects the loading of the cartridge, the cartridge information detection means detects the information of the cartridge, and the information of the cartridge In the case where is the second information, the photographing operation by the photographing operation member is prohibited. Camera. 3. The perforation detecting means includes an optical sensor that generates a signal in accordance with the perforation of the film that is sent from the film cartridge and moves, and wherein the first condition and the second condition are: The level value of the threshold value when processing the output signal of the optical sensor is set to be different from each other.
The camera according to.