JPH11174546A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain needless operation even in the case of reloading a film cartridge housing film exposed halfway in a camera by stopping the initial feeding of film and immediately rewinding the film in the case of detecting an operation input signal by a specified manual switch in the midst of executing the initial feeding of the film. SOLUTION: A film use state read means 2 reads the state of roll photosensitive film housed in the film cartridge loaded inside the camera. Then, the film exposed to a halfway frame is forcibly rewound into the cartridge by the operation of the halfway rewinding switch of a switch 7 forcibly rewinding the film in the midst of exposure or forcibly stopping the initial feeding of the film. When the cartridge in which such film is housed is reloaded in the camera, the film is fed to the unexposed frame by a film feeding means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to a camera of a film delivery system which starts film delivery and initial delivery in response to a closing operation of a cartridge chamber lid.

[0002]

2. Description of the Related Art In recent years, a roll-shaped photographic film having a width of 24 mm housed in a small film cartridge (hereinafter simply referred to as a cartridge) is a so-called advanced photo system.
m) compatible with IX240 standard film (hereinafter referred to as IX
Various types of roll films, such as a 240 cartridge film or simply a film, are widely used.

Various proposals have been made for a photographing apparatus (hereinafter, referred to as a camera) such as a camera for photographing using the IX240 cartridge film.

For example, the leading end of a film housed in a small cartridge is fed out, wound up on a winding shaft on the camera side, and a series of photographs are taken. Immediately after shooting, the film feed mechanism that performs a series of film feeding operations, such as rewinding the film into a small cartridge, and shooting information such as the shooting date and time, the exposure value at the time of shooting, and the state of the camera at the time of shooting. Various proposals have been made such as magnetic recording and reproducing means for magnetically recording a film at a predetermined position corresponding to a photographing frame of the film when the film is fed for one frame.

Further, the camera disclosed in Japanese Patent Application Laid-Open No. 08-76204 is configured to rotate with the movement of the film when the film is fed because the camera is in contact with the film surface. A film driven roller,
A film driven roller rotation detection circuit that outputs a predetermined pulse signal by moving the film by a predetermined amount based on the number of rotations of the film driven roller, and obtains shooting information such as shooting date and time based on the pulse signal. When the film is fed, a predetermined position of the film is recorded by a magnetic means, and the driving and stopping of the feeding motor are controlled based on the pulse signal to control the film feeding. Is detected and the film feeding operation is stopped.

On the other hand, in a camera using the IX240 cartridge film, the film that has been shot up to the middle frame is forcibly rewound into the cartridge while leaving the unexposed portion, and then the cartridge is loaded into the camera as necessary. When the cartridge is reloaded, that is, when the cartridge is loaded into the cartridge chamber of the camera and the lid of the cartridge chamber for shielding the cartridge chamber from light is closed, the cartridge is wound and stored in the cartridge. The film in the [photographed] state is fed into the camera again, and a series of operations for automatically performing the film feeding operation up to the position corresponding to the photographic frame of the unexposed portion, that is, a so-called intermediate film exchange operation, MRC (Mid Roll Change)
Various cameras having a mechanism for realizing the function have been proposed and are generally put into practical use.

[0007] For example, Japanese Patent Application No. 08-320378 previously proposed by the present applicant discloses that the perforation detecting means, the magnetic recording means, the magnetic reproducing means, and the film are rotated in contact with the film surface as the film moves. A camera having a film movement encoder that outputs a pulse signal each time the film moves by a predetermined amount is described.

In this camera, when a film cartridge containing a film which has been photographed up to a halfway frame is loaded into the camera again, first, the feeding and winding operation of the film contained in the cartridge is started, The magnetic reproducing means starts a reproducing operation of the magnetic information recorded on the film. At this time, after the perforation detecting means detects the leading perforation of each photographing frame of the film, if the magnetic information is not detected by the magnetic reproducing means while the film is wound up by a predetermined amount, the photographing is performed. The frame is determined to be an unexposed frame, the film feeding operation is stopped, and the unexposed frame is set at the photographing position, thereby realizing the MRC function.

That is, a film rewinding operation is performed in the middle of the first photographing, the film that has been photographed up to the middle frame is rewound into the cartridge, and then the cartridge is transferred to the camera for the second photographing. By reloading, by detecting the magnetic information of the magnetic recording unit on the film, the unexposed frame immediately after the previously shot frame is set as the shooting position,
That is, shooting can be started.

[0010]

According to the camera proposed in Japanese Patent Application No. 08-320378, an MRC function is realized. Using a film,
At the time of the first photographing, after photographing from the first frame to the vicinity of the last frame (for example, up to the 35th frame), the film is stored in the cartridge by rewinding halfway, and then the second photographing is performed. When the cartridge is reloaded into the camera, the 36th frame, which is an unexposed frame, is set as a shooting position for the second shooting. For this purpose, the camera needs to send out the film in the reloaded cartridge and feed the film (winding operation) up to the 35th frame that has already been photographed.

As described above, if the unexposed portion of the film that has been rewound after the frame has been taken halfway is slightly less than the total number of recordable images, the cartridge is reloaded as described above. There is a problem in that it takes a long time afterwards to reach the shooting ready state.

This is not a problem if the user is aware of it. However, for example, if the user intends to load a cartridge containing an unused film, an unintended cartridge, If a cartridge or the like containing the camera is loaded into the camera, the camera cannot be used for taking a picture until the film feeding operation is completed. If an unintended film cartridge is reloaded, a rewinding operation is performed again to take out the cartridge and load a desired cartridge. Therefore, such a film feeding operation and the time required for the film feeding operation are completely wasted, and the power supply battery of the camera is also wasted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object the purpose of the present invention even when a film cartridge containing a film which has been partially photographed is reloaded into a camera. Film feeding operation up to unexposed frames by MRC function (operation for shooting preparation)
An object of the present invention is to provide a camera capable of stopping the operation without waiting for the completion of the operation and suppressing unnecessary operation.

[0014]

In order to achieve the above object, a camera according to a first aspect of the present invention is a camera of a film sending system for starting film sending and initial feeding in response to a closing operation of a cartridge chamber lid. When an operation input signal by a predetermined manual switch is detected during the execution of the initial feeding of the film, the initial feeding of the film is stopped in response to the signal, and the film is immediately rewound. Is performed.

According to a second aspect of the present invention, in the camera according to the first aspect, the cartridge chamber lid is opened in response to the end of the film rewinding operation.

According to a third aspect of the present invention, in the camera according to the first aspect of the present invention, the operation input of the predetermined manual switch is validated according to the display content of the film use state display means displayed on the film cartridge. Or invalidation.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a schematic block diagram showing a main configuration of the camera according to the first embodiment of the present invention.
FIG. 1 shows only components directly related to the present invention, and the other components are not shown in order to avoid complication of the drawing.

The camera of this embodiment is, for example, an IX240
A camera capable of taking a photograph or the like using a cartridge film, wherein the film is wound in response to a closing operation of a cartridge chamber lid of the camera when the cartridge wound and stored is loaded in the camera. This is a camera of a so-called film sending system in which the feeding and the initial feeding are started.

This camera has a CP for controlling the entire camera.
U1, film use state reading means 2 for reading the state of a roll-shaped photosensitive film (hereinafter, simply referred to as a film) stored in a film cartridge loaded in the camera, and a predetermined state of the film cartridge for determining the state of the film. , A non-exposed frame detecting means 4 for detecting an unexposed portion (frame) of the film, a perforation detecting means 5 for detecting a perforation disposed on the film, Film feeding means 6 for feeding the film,
It is constituted by a switch 7 or the like operated by a user of the camera when performing various operations.

The state of the film read by the film use state reading means 2 may be, for example, [unused (unused
Unexposed)], [Some shots have been taken (exposed)
Undeveloped], [All frames shot (exposed) / undeveloped], [Developed], and the like.

The display mode when the film use state setting means 3 displays the film state is, for example, characters, pictograms, symbols, and the like.

The operations performed by the film feeding means 6 include, for example, an initial sending operation for sending out the leading end of the film from the film cartridge, and a winding operation for winding the film around a winding shaft (not shown) on the camera side. And a rewinding operation for rewinding the film into the film cartridge.

The perforation is detected by the perforation detecting means 5 to count the number of frames taken from a reference position (for example, the first frame or the last frame) of the film and to identify the film position and the like. You.

The switch 7 includes, for example, a main power switch (power SW), a release switch for generating a signal for starting an automatic exposure and an automatic focusing operation, or starting a photographing operation, and forcing a film being photographed. A midway rewind switch for temporarily rewinding, an MRC stop switch forcibly stopping the initial feeding of the film, a reset switch for initializing the state of the camera, and the like.

In this camera, the switch 7
By operating the rewind switch in the middle, the film that has been shot up to the middle frame can be forcibly rewound into the cartridge, and when the cartridge containing the film is reloaded into the camera, the film is fed to the unexposed frame. So-called MRC (Mid (Mid) that the remaining unexposed frames can be continuously photographed.
Roll change) function, that is, a function of changing the film in the middle.

Next, the operation of the camera of this embodiment will be described.
This will be described below. 2 to 11 are flowcharts showing the operation of the camera, and are shown in FIG. 2, FIG. 3, FIG. 4, and FIG.
6 shows a main sequence, FIG. 6 shows a rewind subroutine (PWRRWD) at the time of film rewind operation, and FIG. 7 shows a power-off subroutine (PWROF) when the power is turned off.
F), FIG. 8 shows a release subroutine (RLS) at the time of a release operation, and FIGS. 9, 10, and 11 show an MRC feed processing subroutine (MRLOAD), respectively.

First, when the operator operates the reset switch or loads a battery in the camera, and the reset detection means (not shown) of the camera detects a reset signal (reset start; PWRST), F_RST meaning reset start in step S1 of FIG.
ST is set to 1 and the process proceeds to the next step S3.

On the other hand, when the operator operates the main power switch (power SW) of the camera to turn on the power of the camera (power SW start; PWSWST).
In R), F_RSTST indicating a reset start is set to 0 in step S2, and the next step S
Proceed to step 3.

In step S3, the above-mentioned F_RST
Based on the set value of ST, it is determined whether or not a reset start is performed. Here, if it is determined that the reset start is performed (if F_RSTST = 1), the process proceeds to the next step S4, and in this step S4,
After performing the initialization processing of each mechanism of the camera, the process proceeds to step S5. On the other hand, if it is determined in step S3 that the reset start is not performed (F_RSTST =
0), the power is turned on,
Since the initialization of the mechanism has already been completed, the process immediately proceeds to step S5.

In step S5, a RAM (Random Access Memory) in the CPU 1 is initialized, and then in step S6, a nonvolatile memory (not shown) such as an EEPROM provided in the camera is provided. ), A process (EPRD) of reading data necessary for controlling the camera into the CPU 1 is performed, and in step S7, the open / close state of the cartridge chamber cover of the camera is detected. Here, the cartridge chamber lid is open, that is, the flag F_B
If KSWJ = 0, the process proceeds to step S48.

In step S7, the cartridge chamber cover is closed, that is, the flag F_BKSWJ
If = 1, the process proceeds to step S8. In this step S8, the result of the previous detection of the cartridge chamber lid is determined. Here, if the state of the cartridge chamber lid detected last time is the closed state, that is, if F_EPBKJ = 1, the process proceeds to step S20, and the open state, that is, F_EP
If BKJ = 0, the process proceeds to step S9 (see FIG. 5).

In step S9, the initial position reading process (DEPRD), that is, the use state of the film in the cartridge loaded in the camera and the detection of whether the cartridge is loaded in the camera are performed by the film use state reading means. 2 and the process proceeds to the next step S10.

In step S10, it is determined whether or not the film in the loaded cartridge has been photographed (exposed). Here, if DEPCODE = 10, which is a code indicating the use state of the film, it is determined that the film has been photographed (exposed), and the process proceeds to step S36 in FIG. 3. If DEPCODEＣＯ10, the film has been photographed (exposed). If not, the process proceeds to the next step S11, and in this step S11, it is determined whether or not the film has been developed. Here, DEPCODE =
If it is 11, it is determined that the film has been developed, and the process proceeds to step S36 in FIG. 3. If DEPCODE # 11, it is determined that the film has not been photographed (exposed) and has not been developed.

The set value of the DEPCODE, which is a code indicating the use state of the film, is defined, for example, as follows.

[Unused (unphotographed / unexposed)] state ... DEPCODE = 00 [Shooting (exposure) halfway / undeveloped] state ... DEPCODE = 01 [All frames photographed (exposed) / undeveloped] state ... DEPCODE = 10 [Developed] state... DEPCODE = 11 Next, in step S12, it is determined whether a cartridge is loaded in the camera. Where F_
If CARTIN = 0, it is determined that no cartridge is loaded in the camera, and the process proceeds to step S29. In this step S29, 1 is set to F_DEMO, which is a flag indicating the demo mode, and then step S50 in FIG. Proceed to processing.

In step S12 described above, F
If _CARTIN = 1, it is determined that a cartridge is loaded in the camera, and the process proceeds to the next step S13. That is, if it is determined in step S12 that a cartridge is loaded in the camera, the film in the loaded cartridge is determined as "unused (unused)" based on the determination results in steps S10 and S11 described above. (Photographed / unexposed)] or [photographed halfway (exposure)
Completed / undeveloped].

In step S13, a bar code reading process (BARRD), that is, a reading process of a data disk (bar code) on which sensitivity information of the film stored in the cartridge is displayed. Next, in step S14, it is determined whether or not the information read from the data disk has an abnormality. Where F
If _BARER = 1, it is determined that the information has an abnormality, and the process proceeds to step S36 in FIG. Also, F_B
If ARER = 0, it is determined that there is no abnormality, and the process proceeds to the next step S15.

In step S15, it is determined whether or not the film in the cartridge loaded in the camera has been "taken (exposure) halfway". Here, if F_PARTIAL = 1, it is determined that the film has been photographed (exposed halfway), and the process proceeds to step S16. Also, F_PARTIAL
If = 0, it is determined that the image has not been partially photographed (exposed), and the process proceeds to step S18. In this step S18, a normal automatic film feeding process (autoloading process; ALOAD) That is, a process of setting the first frame of the film at the photographing position is performed. afterwards,
Proceed to step S19.

Next, in step S19, it is determined whether or not an abnormality has occurred during the autoloading (automatic feeding) process in step S18. If the autoload error flag F_ALER = 1, it is determined that an abnormality has occurred. Then, the process proceeds to step S35 in FIG.
If = 0, it is determined that there is no abnormality, and the process proceeds to step S50 in FIG.

On the other hand, if it is determined in step S15 that the film in the cartridge loaded in the camera has been partially photographed (exposed), and the process proceeds to step S16, the process proceeds to step S16.
MRC feeding processing (MRLOAD; to be described later; FIGS. 9 to 11)
That is, a process of setting the unexposed frame immediately after the previous frame at the shooting position to the shooting position is performed, and in the next step S17, it is determined whether or not there is any abnormality during the execution of the MRC feeding process. . Here, if F_MERR = 1, it is determined that there is an abnormality during the execution of the MRC feeding process, and the process proceeds to step S36 in FIG.
If = 0, it is determined that there is no abnormality during execution of the MRC feeding process, and the process proceeds to step S50 in FIG.

In step S8 (FIG. 2), if the cartridge chamber lid was closed at the time of the previous detection, that is, if F_EPBKJ = 1, then step S8 is executed.
When the process proceeds to step S20, in step S20,
The camera determines whether or not the data disk (bar code) reading process is being executed. If it is determined that the barcode reading process is being performed, the process returns to step S12 in FIG. 5, and the subsequent processes are repeated.

If it is determined in step S20 that the barcode reading process is not being executed, the process proceeds to the next step S21.
At 21, it is determined whether or not the film rewinding operation is being performed. Here, when the rewinding operation is being performed, the process proceeds to step S37 in FIG. 6, and when the rewinding operation is not being performed, the process proceeds to the next step S22.

In step S22, it is determined whether or not the automatic feeding operation is being performed on the film.
Here, if the automatic film feeding operation is being performed, the process proceeds to the next step S35, and in this step S35, a code indicating the use state of the film, DEP, is displayed.
After setting CODE to 00, that is, to the state of “unused (unphotographed / unexposed)”, the process proceeds to step S37 in FIG.

If it is determined in step S22 that the automatic film feeding operation is not being performed, the flow advances to step S23 in FIG. In this step S23, the MRC feeding process (MRLOAD; FIG. 9)
To FIG. 11) is determined.
If it is determined that the MRC feeding process is being performed, the process proceeds to step S36. If it is determined that the MRC feeding process is not being performed, the initial position reading process is performed in the next step S24. It is determined whether (DEPRD) is being executed.

If it is determined in step S24 that the initial position reading process is being executed, the process proceeds to step S24.
Proceeding to the process at 36, if it is determined that the initial position reading process is not being performed, the process proceeds to the next step S25, and it is determined at this step S25 whether or not the mode is the demonstration mode. Here, if it is determined that the mode is the demonstration mode, the process proceeds to step S50 in FIG. 4, and if it is determined that the mode is not the demo mode, the next step S26 is performed.
, It is determined whether or not a hoisting operation (for one frame) is being performed.

In step S26, if it is determined that the hoisting operation is being performed, the process proceeds to step S30. If it is determined that the hoisting operation is not being performed, the next step is performed. The process proceeds to S27. In this step S27, it is determined whether or not the film in the cartridge is fed into the camera and is being fed. If the film is being fed into the camera, the process proceeds to step S50 in FIG. 4. If the film is not being fed into the camera, the process proceeds to step S28. Step S28
, A rewind completion flag indicating that the rewind operation has been completed is set to 1, and the process proceeds to the next step S50 (FIG. 4).

If it is determined in step S10 (FIG. 5) that the film in the loaded cartridge has been photographed (exposed) (DEPCODE = 10), the film has been developed in step S11. (DEPCODE = 11). When it is determined that the information read from the data disk has an abnormality (F_BARER = 1) in step S14, the MRC is determined in step S17.
An error occurred during the execution of the feeding process (F_MERR = 1)
When it is determined that the MRC feeding process is being performed in step S23 (FIG. 3) described above.
If it is determined in step S24 that the initial position reading process is being performed, the process proceeds to step S36.
In this step S36, DEPECODE indicating the film state is set to [all frames (exposure)].
[Developed / Undeveloped] state is set to DEPCODE = 10. Thereafter, the process proceeds to step S37 in FIG.

On the other hand, in step S26 (FIG. 3) described above, it is determined that the hoisting operation is being performed, and the process proceeds to step S30. A flag F_EPOWRST indicating that a signal has been generated is set to 1, and in step S31, a process (EPWR) for storing the information of F_EPOWRST = 1 in a non-volatile memory (not shown) such as an EEPROM provided in the camera. ), The process proceeds to step S32.
, A process such as a hoisting operation after resetting, that is, a process (MGNOWIND) of setting an unexposed frame at a shooting position in preparation for the next shooting. Note that this MGNOW
Since the IND processing is not directly related to the present invention,
The description is omitted.

Next, in step S33, it is determined whether or not the photographing operation for the last frame of the film and the subsequent winding operation have been completed. Where F_FILM
If END = 0 and the shooting and hoisting operation of the last frame has not been completed, the process proceeds to step S50 in FIG. 4, and F_FILEMEND = 1 and the shooting and hoisting operation of the last frame have been completed. If it is determined that the process has been performed, in the next step S34, the DEPCODE is set to 10, which is the "photographed (exposed)" state, and then the process proceeds to step S37 in FIG.

In step S7 (FIG. 2), if F_BKSWJ = 0 and the cartridge chamber lid is open, the process proceeds to step S48. In step S48, rewinding is completed. After the flag is initialized to 0 and the demo mode flag F_DEMO is initialized in the next step S49, the process proceeds to step S50 in FIG.

Next, in step S50 shown in FIG. 4, after the processing of reading the state of various switches 7 such as the power SW is performed, in step S51, the power SW is read.
Is determined whether or not there has been a change. If it is determined that the power SW has changed, the process returns to the above-described power SW start (PWSWSTR; see FIG. 2), and the subsequent processing is repeated. If it is determined that the power SW has not changed, the process proceeds to step S52, where the state of the power SW is determined. If it is determined that the power SW is off (OFF), the process proceeds to a power-off process (PWROFF; details will be described later) shown in FIG. 7, while the power SW is on (ON). If it is determined that
In the next step S53, a process (ZMWID) of extending the photographic lens barrel to the photographic preparation position is performed. At this time, if the lens barrel is already located at the shooting preparation position, the process immediately proceeds to the next step S54.

In step S54, the state of the various switches 7 is read again, and in step S55, the power S is read in the same manner as in step S51.
It is determined whether W has changed. If it is determined that the power SW has changed, the process returns to the above-described power SW start (PWSWSTR; see FIG. 2), and the subsequent processing is repeated. If it is determined that there is no change in the power SW, the process proceeds to step S56, and the process proceeds to step S56.
The state of the power SW is determined in the same manner as in the processing of (1). here,
If it is determined that the power SW is in the OFF (OFF) state, a power-off process (PWROFF; FIG.
On the other hand, if it is determined that the power SW is on (ON), then in the next step S57, it is determined whether or not the midway rewind switch (RWSW) of the switch 7 has changed. .

In step S57, if there is a change in the RWSW, a rewinding process (PWRRW) described later is performed.
D; see FIG. 6), and if there is no change in the RWSW, the process proceeds to step S58, and in this step S58, it is determined whether or not the cartridge chamber cover switch (BKSW) of the switch 7 has changed. Perform
Here, when there is a change in BKSW, the PW in FIG.
The process proceeds to the RBK process, and if there is no change, the process proceeds to step S59, and in this step S59, it is determined whether or not the rewind operation is completed with reference to the rewind completion flag.

In step S59, if it is determined that the rewinding completion flag is 1 and the rewinding operation has been completed, the process returns to step S54, and the subsequent processes are repeated. If it is determined that the rewind completion flag is 0 and the rewind operation has not been completed, the state of the zoom-up switch (ZUSW) of the switch 7 is determined in the next step S60. Where ZUSW
If the switch is on, the process proceeds to step S63. If the ZUSW is off, the process proceeds to step S61 to determine the state of the zoom-down switch (ZDSW) of the switch 7. . If the ZDSW is on (ON), the process proceeds to step S63. If the ZDSW is off (OFF), the process proceeds to step S62, where the first release SW (1RSW; Details will be described later.
(See also FIG. 8). Here, if the 1RSW is in the ON (ON) state, the process proceeds to step S64. If the 1RSW is in the OFF (OFF) state, the process returns to the above-described step S54, and the subsequent processes are repeated.

In steps S60 and S61 described above, Z
When the USW / ZDSW is in the ON state, the process proceeds to step S63. In this step S63, after performing the zooming operation (ZOOM) according to the state of both switches (ZUSW / ZDSW), the above-described operation is performed. Returning to the processing of step S54, the subsequent processing is repeated.

In step S62, 1R
When the switch is on, the process proceeds to step S64. In step S64, a release process (RLS; see FIG. 8) described later is performed, and then the process proceeds to the next step S65. In step S65, it is determined whether the photographing operation and the winding operation for the last frame of the film have been completed. Here, the flag F_
If FILMEND = 0 and the shooting operation and the hoisting operation for the last frame are not completed, the process returns to step S54, and the flag F_FILEMEN is returned.
If D = 1 and it is determined that the above operation has not been completed, the process proceeds to the rewinding process (PWRRWD; see FIG. 6).

Next, the rewinding process (PWRRWD) during the film rewinding operation will be described with reference to FIG. In this rewinding process, first, in step S42, it is determined whether or not a reset signal has been generated during the execution of the winding operation for one frame. Here, if F_EPOWRST = 1, it is determined that the reset signal has been generated during the execution of the winding operation for one frame, so the process proceeds to the next step S45.
If F_EPOWRST = 0, it is determined that the reset signal has not been generated during the execution of the winding operation for one frame, and the process proceeds to the next step S43. This step S
At 43, it is determined whether the photographing operation and the winding operation of the last frame of the film have been completed. Where F_F
If ILMEND = 1 and the shooting operation and the hoisting operation of the last frame have been completed, the process proceeds to step S45, where F_FILMEND = 0 and the shooting operation and the hoisting operation of the last frame have been completed. If it is determined that there is not, the process proceeds to the next step S44.

In step S44, it is determined whether or not the value of the number-of-frames-to-be-photographed counter is 1, that is, whether the first frame has been photographed. Here, if the frame number counter = 1, the first frame is set at the shooting preparation position, so that the process proceeds to step S46. If the frame number counter ≠ 1, the process proceeds to step S47. .

In step S45, a DEPCODE representing "all frames have been photographed (exposed) / undeveloped" is displayed.
= 10, DEPCODE = 00 representing [unused (unphotographed / unexposed)] in step S46, and [departure photographing (exposure)] in step S47.
After setting DEPCODE = 01, which indicates "completed / undeveloped", the process proceeds to the process of step S37.

In step S37, the information of the DEPCODE set in steps S45, S46, and S47 is stored (EPWR) in a non-volatile memory (not shown) such as an EEPROM.
In step S38, a lens barrel retracting process (ZMSNK) for retracting the taking lens barrel into the camera body is performed, and in the next step S39, the film is rewound into the cartridge (RWIND).
In the next step S40, the use state of the film is set using the film use state setting means 3 on the basis of the information stored in the non-volatile memory in the above step S37 (SPARC), and in step S41, the film is rewound. After setting the completion flag to 1, the process proceeds to the above-described step S50 (FIG. 4).

Next, the power-off process (PW
ROFF) will be described. In this power-off process, first, in step S70, the lens barrel retracting process (ZMSNK) is performed, and then the process proceeds to the next step S71. If the lens barrel is already in the retracted state, the process proceeds to step S71 without doing anything.

In this step S71, the CPU 1
Is set to a stop mode (STOP).
In the stop mode in the above-described step S71, it is set so that the interruption of the switch is permitted, and the stop mode is released by a predetermined switch change.

Next, in step S72, it is determined whether or not the power switch (PWRSW) has changed. Here, if there is a change in the power SW, the process proceeds to the above-described PWSWSTR (see FIG. 2), while the power S
If it is determined that there has been no change in W, step S
At 73, it is determined whether or not the rewind SW (RWSW) has changed. Here, if a change is found in the rewind SW, the process proceeds to the PWRRWD process of FIG. 6. If it is found that there is no change, in step S74, is there a change in the cartridge chamber cover SW (BKSW)? A determination is made as to whether or not it is.

If it is determined in step S74 that the cartridge chamber cover SW has changed,
If it is determined that there is no change in the cartridge chamber cover SW, the process proceeds to step S75, where it is determined whether or not the other switches 7 have changed. Here, when there is a change in other switches 7, the PWRW in FIG.
Proceeding to the AKE process, the processes after step S51 are executed.

If it is determined in step S75 that there is no change in the other switches 7, the process returns to step S71, and the subsequent processes are repeated.

Next, referring to FIG. 8, the release process (RL
S) will be described. The release switch included in the switch 7 of the camera is, for example, a first release switch (1R
SW) and a second release switch (2RSW). When the first release switch (1RSW) is turned on, a first release signal is generated.
A ranging operation and the like are performed. Also, the second
When the release switch (2RSW) is turned on, a second release signal is generated, and in response to this, a shooting operation (release operation) for operating a shutter / aperture mechanism and the like is performed.

The release process (RLS) shown in FIG. 8 is started when the operator turns on the 1RSW. When the 1RSW is turned on, in step S80, first, a distance measuring operation is performed, and then, in step S8.
At 1, a photometric operation is performed. And step S
In 82, the CPU 1 performs a distance measurement operation based on the distance measurement result obtained in the above-described step S80, and performs a photometry operation based on the light measurement result obtained in the above-described step S81 in the next step S83.

Next, after the state of various switches 7 is read in step S84, the process proceeds to step S84.
At 85, first, the state of the 1RSW is determined. Here, if it is determined that the 1RSW is in the OFF (OFF) state, a series of sequences relating to the release process is terminated, and the process returns to the main routine (return).

On the other hand, in step S85, 1RSW
Is determined to be in the ON state (ON), in the next step S86, a change in 2RSW is confirmed.
Here, when it is determined that there is no change in 2RSW,
The process returns to the above-described step S84, and the subsequent processes are repeated. If it is determined that the 2RSW has changed, the process proceeds to the next step S87, and in this step S87, the extension operation of the photographic lens barrel is performed based on the result of the distance measurement calculation in step S82 described above. .

Next, in step S88, a flag indicating that the winding operation for one frame is being executed is set to F_W.
IND = 1 is set, and in the next step S89, a process (EPWR) of storing the information of F_WIND = 1 in a nonvolatile memory (not shown) such as an EEPROM is performed. Thereafter, the process proceeds to step S90.

In step S90, after performing the exposure control processing based on the photometric calculation result in step S83, in step S91, the photographing lens is moved to the initial position (lens reset), and then in step S92, Set shooting data such as shooting date and time,
After performing processing for storing this in a predetermined RAM or the like, in step S93, one-frame winding processing (O-WIN)
After D) is performed to set the next photographing frame at a predetermined photographing position, a series of sequences is terminated, and the process returns to the main routine (return).

Next, referring to FIGS. 9, 10, and 11, an operation of setting an unexposed frame at a predetermined photographing position, so-called MR
The C feeding process (MRLOAD) will be described below.

In the course of the main routine described above, M
When RLOAD is called, first, step S100
, The perforation detection means (WPR) 5 such as a photoreflector is turned on, and in the next step S101, time measurement by a timer is started to detect an abnormality in control by the CPU 1. Then
In step S102, the value of a WPR counter (perforation detection counter) is initialized to 0. In the next step S103, the frame number counter is initialized to 0. In step S104, whether magnetic information is recorded on the film is determined. F_DAT indicating
ON is initialized to 0. That is, a state indicating that no magnetic information is recorded is specified.

Next, in step S105, a magnetic reproducing circuit (not shown) for reading magnetic information on the film is turned on (ON), and then in step S106, a feed motor (not shown) is turned on (ON). ) State and rotate in the winding direction. As a result, the leading end of the film is fed out of the cartridge, and the winding operation by the spool shaft on the camera side is started.

Then, in step S107, whether or not perforation on the film is detected by the perforation detecting means (WPR) 5,
An R signal is detected. Here, if a WPR signal is detected, the process proceeds to the next step S110,
If the PR signal is not detected, step S10
Proceed to step 8. In this step S108, referring to the time measurement started in the above-mentioned step S101,
It is determined whether or not a predetermined time set in advance has elapsed. Here, if the predetermined time has elapsed, FIG.
The process proceeds to the process of step S142, and if the predetermined time has not elapsed, the process proceeds to the process of step S109.

In step S109, switch 7
Is determined whether the MRC stop switch (SW) is pressed. Here, when it is determined that the MRC stop SW is pressed, the process proceeds to step S143 in FIG. 11, and when it is determined that the MRC stop SW is not pressed, the process returns to step S107. The subsequent processing is repeated.

Next, in step S107, W
When the PR signal is detected and the process proceeds to the next step S110, the above-mentioned F_DAT indicating whether or not magnetic information is recorded on the film in this step S110.
The ON flag is initialized to 0. Subsequently, in step S111, the WPR is set in the same manner as in the processing in step S107.
The signal is detected. Here, when the WPR signal is not detected, the process proceeds to step S118, and when the WPR signal is detected, the process proceeds to step S112.

In step S112, the WPR
After counting up the counter, it is determined in step S113 whether or not the WPR counter = 2, that is, whether or not the film feeding for one frame is completed.
Here, if WPR counter # 2, step S119
When it is confirmed that the WPR counter is equal to 2, the WPR counter is initialized to 0 in step S114, the timer is started again in step S115, and the frame number counter is counted in step S116. After uploading, step S11
Proceed to step 7.

Next, in step S117, it is determined whether or not magnetic information is recorded on the film with reference to the flag F_DATON. Where F_D
If ATON = 1, it is determined that magnetic information is recorded on the film, and the process returns to step S110. If F_DATON = 0, it is determined that magnetic information is not recorded on the film. Step S12
3 (FIG. 10).

On the other hand, in step S111, W
If the process proceeds to step S118 when the PR signal has not been detected, the WPR
It is determined whether or not the counter is 1, that is, whether or not only one perforation is detected. Here, if WPR counter ≠ 1, the process proceeds to step S121, and if WPR counter = 1, the process proceeds to step S119.

In step S119, it is determined whether a magnetic signal has been detected by the magnetic reproducing circuit. Here, if no magnetic signal is detected,
Proceeding to step S121, if a magnetic signal is detected, the flag F_DA is determined in step S120.
After setting TON to 1, the process proceeds to step S121.

In step S121, the processing is started in the above-described step S101, or is performed in the above-described step S115.
Based on the result of the timer being restarted at
It is determined whether or not a predetermined time set in advance has elapsed. Here, if the predetermined time has elapsed, the process proceeds to step S142 in FIG. 11, and if the predetermined time has not elapsed, the process proceeds to step S122.

In step S122, it is determined whether or not the MRC stop switch (SW) of the switch 7 has been pressed, similarly to the processing in step S109 described above. Here, when it is determined that the MRC stop SW is pressed (in the ON state), step S1 in FIG. 11 is performed.
Proceeding to the process at 43, if it is determined that the SW has not been pressed (it is in the OFF state), the process returns to step S111, and the subsequent processes are repeated.

Next, in step S123 shown in FIG. 10, the feeding motor is turned off and stopped, the WPR counter is initialized to 0 in step S124, time counting by the timer is restarted in step S125, and feeding is performed in step S126. After the motor is turned on again and rotated in the rewind direction, the process proceeds to step S127.

In step S127, the WPR signal is detected in the same manner as in steps S107 and S111 described above. Here, when the WPR signal is not detected, the process proceeds to step S130, and when the WPR signal is detected, the process proceeds to step S128.

At step S128, the WPR counter is counted up in the same manner as at step S112, and then at step S129, the WP
It is determined whether or not R counter = 4. here,
If WPR counter # 4, the process proceeds to step S130. If it is confirmed that WPR counter = 4, the process proceeds to step S132.

In step S130, it is determined whether or not a predetermined period of time has elapsed based on the result of the timer restarted in step S125. Here, if the predetermined time has elapsed, the process proceeds to step S142. If the predetermined time has not elapsed, the process proceeds to step S131.

In step S131, it is determined whether or not the MRC stop switch (SW) of the switch 7 has been pressed, similarly to the processing in steps S109 and S122 described above. Here, if it is determined that the MRC stop SW is pressed (ON state), the process proceeds to step S143. If it is determined that the SW is not pressed (OFF state), step S127 is performed. And the subsequent processing is repeated.

Next, in step S132, the feed motor is turned off and stopped in the same manner as in the processing in step S123 described above, the WPR counter is initialized to 0 in step S133, and time counting by the timer is restarted in step S134. After the feed motor is rotated in the hoisting direction in step S135, the process proceeds to step S136.

In step S136, the WP is set in the same manner as in steps S107, S111, and S127.
The R signal is detected. Here, when the WPR signal is not detected, the process proceeds to step S139, and when the WPR signal is detected, the process proceeds to step S137.

In step S137, the WPR counter is counted up in the same manner as in the processing in steps S112 and S128, and in step S138, whether or not the WPR counter = 2, that is, the film feed for one frame is performed. It is determined whether or not the transmission has been completed. Here, if WPR counter = 2, step S
The process proceeds to step 141, and after stopping the feed motor in step S141, a series of sequences is processed.

In the above-mentioned step S138,
If the WPR counter is # 2, the process proceeds to step S139. In step S139, based on the result of the timer restarted in step S134, whether or not a predetermined time set in advance has elapsed. Make a judgment. If the predetermined time has elapsed, the process proceeds to step S142. After the feed motor is stopped in step S142, the process proceeds to a sequence of an abnormal process. Since this abnormal processing sequence is not directly related to the present invention, the description thereof is omitted here.

In the above-mentioned step S139,
If it is determined that the predetermined time has not elapsed, the process proceeds to step S140. In this step S140, the above-mentioned steps S109, S122, S13
In the same manner as in the process 1, it is determined whether or not the MRC stop switch (SW) of the switch 7 is pressed. If it is determined that the MRC stop SW is pressed (ON state), the process proceeds to step S143, and the process proceeds to step S143.
If it is determined that W has not been pressed (OFF state), the process returns to step S136, and the subsequent processes are repeated.

Next, in step S143, the feeding motor is turned off and stopped in the same manner as in the processing in steps S123 and S132 described above, and the rewind control processing is executed in step S144, and the spool park control processing is executed in step S145. That is, after setting the film use state display means for indicating the use state of the film stored in the cartridge to "Some half-shot (exposed) / undeveloped", a series of sequences is terminated.

As described above, the camera according to the present embodiment is capable of photographing an unexposed frame by a predetermined amount when a cartridge containing a film in the state of "shooting halfway (exposed) / undeveloped" is loaded into the camera. In order to set the position, the film has an MRC function for sending out the film from the cartridge and performing a winding operation.

The camera is provided with an MRC stop switch which can stop the mid-film changing operation during the mid-film changing operation utilizing the MRC function.
The CPU 1 monitors the MRC stop switch during the MRC operation, stops the MRC operation when the MRC stop SW is turned on, rewinds the film into the cartridge, and displays the film use state display means provided on the cartridge. Is set to the state of "Shooting (exposure) partially / Undeveloped", and the cartridge can be taken out of the camera.

Therefore, for example, when the operator mistakenly inserts a film cartridge in the state of [halfway photographing (exposed) / undeveloped] into the camera, the MRC operation is completed. , The operation can be interrupted only by operating the MRC stop SW. Therefore, the time required for reloading a desired film cartridge can be reduced, which can contribute to improvement in operability.

FIG. 12 is a schematic block diagram showing a main structure of a camera according to the second embodiment of the present invention. Note that the present embodiment has substantially the same configuration as the above-described first embodiment. Therefore, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.

The camera of this embodiment comprises a CPU 1 and a film use state reading means 2 as in the first embodiment.
And a film use state setting means 3, an unexposed frame detecting means 4, a perforation detecting means 5, a film feeding means 6, a switch 7 and the like, and a cartridge for accommodating a film cartridge. A cartridge chamber lid driving means 8 for opening and closing a chamber opening / closing lid (not shown) is provided.

When the rewinding operation of the film is completed, the cartridge chamber lid drive obtaining means 8 is responsive to this.
Drives the cartridge chamber lid to open, thereby facilitating removal of the film cartridge from the cartridge chamber.

FIGS. 13 and 14 are flowcharts showing a part of the main sequence in the camera, and FIG. 15 is a flowchart showing a power-off subroutine (PWROFF) when the power is turned off. FIG. 16 is a flowchart showing a part of the MRC feed processing subroutine (MRLOAD) during the MRC operation. Note that these operation sequences are also substantially the same as those in the above-described first embodiment.
4 corresponds to FIG. 4, FIG. 15 corresponds to FIG. 7, and FIG. 16 corresponds to FIG. 11, respectively, and only a part of the operations is slightly different.

Hereinafter, of the operation of the camera according to the present embodiment, only the parts different from those of the above-described first embodiment will be described. First, a main sequence in the camera of the present embodiment will be described with reference to FIGS.

As in the camera of the first embodiment,
An operator operates a reset switch or loads a battery into the camera, and the camera reset detection means (not shown)
Detects a reset signal (reset start; P
In (WRST), after setting the reset start flag F_RSTST to 1 in step S1 in FIG. 13, the process proceeds to the next step S3.

On the other hand, when the operator operates the main power switch (power SW) of the camera to turn on the power of the camera (power SW start; PWSWSTR).
In step S2, the reset start flag F
After setting _RSTST to 0, the process proceeds to the next step S3. The operations from step S1 to step S56 and the operations from step S57 to step S65 are performed in the main sequence of the first embodiment described above (see FIG. 2 to FIG. 2).
This is exactly the same as FIG. 6).

That is, after the operations from step S1 to step S56 are executed in the same manner as in the first embodiment, in step S207 in FIG. A determination is made as to whether the SW has changed. Here, when it is determined that the eject SW has changed, FIG.
The process proceeds to Power Eject (PWREJ) processing of No. 3. If it is determined that there is no change in the eject SW, the process proceeds to step S57, and thereafter the first
The same processing as that of the embodiment is executed.

In step S207 (FIG. 14) described above, it is determined that the eject switch has changed.
When the process proceeds to the power ejection (PWREJ) process of step S38, first, in step S217, the above-described step S38
(FIG. 6) After the lens barrel retracting process (ZMSNK) similar to step S70 (see FIG. 7) is executed, the next step S2 is performed.
Proceed to step 18. Here, if the lens barrel is already in the retracted state, no operation is performed, and the process immediately proceeds to step S.
Proceed to 218. In this step S218,
After the cartridge chamber lid control processing (details will be described later; see FIG. 16), the process returns to step S7, and the subsequent processing is repeated.

Next, the power-off process (P
WROFF) will be described. In the power-off process in the camera of the present embodiment, after steps S70 to S73 are performed in the same manner as in the above-described process of the first embodiment, in step S224, it is determined whether or not the eject SW has changed. To detect. Here, if a change is detected in the eject SW, the power eject (P
WREJ) processing and proceeds to step S217 / S described above.
After the process of 218 is performed, the process returns to the process of step S7, and the subsequent processes are repeated. If no change is detected in the eject switch in step S224, the process proceeds to step S74, and thereafter, the same processes as those in the first embodiment are executed.

Next, an operation of setting an unexposed frame in a predetermined photographing position in the camera of the present embodiment, that is, so-called MRC
The feeding process (MRLOAD) will be described below with reference to FIG. Steps S100 to S145
The operation up to this point is exactly the same as the sequence of the MRC feeding process of the first embodiment (see FIGS. 9 to 11), and the description is omitted.

Step S is performed in the same manner as in the first embodiment.
After the operations from 100 to step S145 are executed,
In step S346 in FIG. 16, the cartridge chamber lid control processing, that is, the cartridge chamber lid is driven to change from the closed state to the open state, the cartridge chamber loading opening is opened, and the cartridge housed in the cartridge chamber is opened. After the state where it can be easily taken out, step S347 is performed.
, The flag F_B indicating the state of the cartridge chamber lid
KSWJ is initialized to 0 indicating an open state, and a series of sequences is terminated.

As described above, the camera of this embodiment has the MRC function as in the first embodiment, and
MRC during the film change operation using the function
By operating the stop SW, the MRC operation can be stopped. At this time, the camera rewinds the film being sent from the cartridge to the camera side, and sets the film use state display means on the cartridge to a state of "halfway photographed (exposed) / undeveloped". Thereafter, the cartridge chamber lid is further driven from the closed state to the open state so that the cartridge can be easily removed from the cartridge chamber of the camera.

As described above, the present embodiment can provide the same effects as those of the first embodiment. Also, since the cartridge chamber lid is opened at the same time as the completion of the film rewinding operation, the completion of the film rewinding operation can be easily recognized, and the cartridge can be taken out quickly.

In the first and second embodiments described above,
The unexposed frames are detected based on the magnetic information recorded on the film. However, the means for detecting the unexposed frames is not limited to this, and other means may be used.

In the cameras of the first and second embodiments, the sequence for periodically detecting the state of the MRC stop SW is not limited to this. For example, the interrupt function of the CPU 1 is used. And MRC stop SW
May be detected.

Further, in the cameras according to the first and second embodiments, the MRC operation is stopped in order to stop the MRC operation.
A stop SW is newly provided. Instead, for example, a midway rewind SW provided in a general camera is conventionally used, or an operator such as a cartridge removal SW is used. When taking out the cartridge, various means are conceivable, such as using an arbitrarily operated switch or the like.

[Supplementary Note] According to the above-described embodiment of the present invention, an invention having the following configuration can be obtained. (1) Film feeding means for feeding and rewinding the film, state reading means for reading the use state of the film on the cartridge, and unexposed frame detecting means for detecting an unexposed frame during film feeding. , Manual operation switch means, and when a cartridge containing a partially exposed film is loaded, the film supply based on the detection result of the state reading means and the detection result of the unexposed frame detection means is performed. A camera for validating the input of the manual operation switch means during the initial film feeding for cueing the unexposed frame by the feeding means.

(2) In the camera described in Appendix 1,
When the switch input during the initial film feeding is detected, the initial film feeding operation is stopped and the film rewind operation is started.

(3) In the camera described in Supplementary Note 2,
The apparatus further includes a cartridge chamber lid and a cartridge chamber lid driving means, and opens the cartridge chamber lid after the completion of the film rewinding operation.

[0118]

As described above, according to the present invention, even when a film cartridge containing a partially photographed film is reloaded into the camera, the film is fed to the unexposed frame by the MRC function. It is possible to provide a camera capable of stopping an operation (operation for preparing for photographing) without stopping the operation and suppressing useless operation.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a main configuration of a camera according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a main sequence in the camera of FIG. 1;

FIG. 3 is a flowchart showing a main sequence in the camera of FIG. 1;

FIG. 4 is a flowchart showing a main sequence in the camera of FIG. 1;

FIG. 5 is a flowchart showing a main sequence in the camera of FIG. 1;

FIG. 6 is a flowchart showing a rewind subroutine (PWRRWD) during a film rewind operation in the camera of FIG. 1;

7 is a flowchart showing a power-off subroutine (PWROFF) when the power of the camera in FIG. 1 is turned off.

8 is a flowchart showing a release subroutine (RLS) at the time of a release operation in the camera of FIG. 1;

9 is a flowchart showing an MRC feed processing subroutine (MRLOAD) during an MRC operation in the camera of FIG. 1;

FIG. 10 is a diagram illustrating an MRC in an MRC operation in the camera of FIG. 1;
9 is a flowchart illustrating a feed processing subroutine (MRLOAD).

FIG. 11 is a diagram showing an MRC in an MRC operation in the camera of FIG. 1;
9 is a flowchart illustrating a feed processing subroutine (MRLOAD).

FIG. 12 is a schematic block diagram illustrating a main configuration of a camera according to a second embodiment of the present invention.

FIG. 13 is a flowchart showing a part of a main sequence in the camera of FIG. 12;

FIG. 14 is a flowchart showing a part of a main sequence in the camera of FIG. 12;

15 is a flowchart showing a power-off subroutine (PWROFF) when the power of the camera in FIG. 12 is turned off.

FIG. 16 is a diagram showing an MRC in an MRC operation in the camera of FIG. 1;
9 is a flowchart showing a part of a feed processing subroutine (MRLOAD).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... CPU 2 ... Film use state reading means 3 ... Film use state setting means 4 ... Unexposed frame detection means 5 ... Perforation detection means 6 ... Film feeding means 7 ... Switch 8 ... Cartridge chamber Lid drive means

Claims (3)

[Claims] 1. A film delivery type camera for starting delivery and initial feeding of a film in response to a closing operation of a cartridge chamber lid, wherein the camera is operated by a predetermined manual switch during execution of the initial feeding of the film. A camera, characterized in that when an input signal is detected, the initial feeding of the film is stopped in response to the input signal and the film is immediately rewound. 2. The camera according to claim 1, wherein the cartridge chamber cover is opened in response to the end of the film rewinding operation. 3. The method according to claim 1, wherein the operation input of the predetermined manual switch is validated or invalidated according to the display content of the film use state display means displayed on the film cartridge. 2. The camera according to 1.