JPH03179434A - Camera - Google Patents

Abstract

PURPOSE:To prevent different film feeding systems from being applied on the same film by inhibiting that two systems, an ordinary winding system and a preliminary winding system, are applied to one film with the aid of a selection means. CONSTITUTION:An E<2>RPOM 13a which is a storage means for storing feeding mode information and frame number information and plural contacts 13b connected to the input/output pins of the E<2>PROM 13a are provided on a memory substrate 13 set on the upper part of a cartridge 10. The feeding mode information in the E<2>PROM 13a of the loaded cartridge 10 is read out so as to discriminate whether or not the feeding mode is recorded, and either the ordinary winding system or the preliminary winding system is selected. Then, applying two systems, the ordinary winding system and the preliminary winding system, to one film is inhibited by the selection means. Thus, the film feeding system appropriate for a photographing condition and the taste of a user is selected and the different film feeding systems are not applied on the same film.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a camera using a roll film cartridge (hereinafter referred to as a cartridge), and in particular to a camera that uses either a normal winding method or a preliminary winding method as a film feeding method. Regarding the selected camera.

[Prior Art] Conventionally, as a method for feeding film in a camera using a cassette, there is a normal winding method used for boat fishing, which involves pulling out the p1n film from the cassette and feeding it frame by frame. It is something. In addition to this normal winding method, a film feeding method as disclosed in Japanese Patent Application Laid-Open No. 57-89735 has been proposed. With this method, when you load the cartridge into the camera,
After performing a preliminary winding operation in which all frames of film are automatically pulled out from the cartridge and wound onto a suar, the film is sequentially wound onto the cartridge and the frames are advanced. It has been called.

[Problems to be Solved by the Invention] In the above-mentioned camera that adopts the normal winding method, it is possible to start shooting immediately after loading the cartridge, but if the back cover of the camera is opened by mistake during shooting, However, there was a drawback that the exposed portion of the film was exposed to light. On the other hand, with cameras that use a pre-winding system, contrary to the normal winding system described above, even if you accidentally open the camera back during shooting, the exposed portion of the film is still stored in the cartridge. Therefore, there is no risk of exposure to light, but once the cartridge is loaded, the preliminary winding operation takes time, making it impossible to start shooting immediately.

Therefore, when trying to take pictures continuously with two rolls of film, with a normal film-winding camera, it takes time to rewind the film after the first film has been shot, so the shooting is interrupted. There is a problem with it. On the other hand, in a camera with a pre-winding system, 2
There is a problem in that shooting is interrupted because the preliminary winding operation of the main film takes time.

[Means for Solving the Problems] The camera of the present invention has a selection means for selecting either the normal winding method or the pre-winding method as a film feeding method, and two methods, the normal winding method and the pre-winding method. and prohibition means for prohibiting the selection means from applying the selection means to one film.

The present invention also includes the above-mentioned selection means and writing means for recording selection information indicating the film feeding method selected by the selection means in a storage means provided on the film or on a cartridge storing the film.

It also includes the selection means, the writing means, and the reading means for reading out the selection information and the frame number information written in the storage means. Further, the selection means selects the film feeding method indicated by the selection information read out from the storage means of the loaded film by the reading means. Furthermore, it has a film feeding means for preparing and feeding the film according to the frame number information read out by the reading means. Furthermore, no matter which film feeding method is set, the film feeding means winds up the film and feeds it in preparation.

Further, the film feeding method can be selected and changed by the selection means only before the first frame is photographed.

Furthermore, the camera includes a prohibition means for prohibiting the operation of feeding the first frame of the film to the photographing position from being performed more than a predetermined number of times in response to a change in the film feeding method selected by the selection means.

[Function] The film feeding method can be arbitrarily selected by selecting either the normal winding method or the preliminary winding method, and the two methods, the normal winding method and the preliminary winding method, are the selection means. by 1
By prohibiting application to the same film, different film feeding methods will not be applied to the same film.

In addition, by recording selection information indicating the selected film feeding method in a storage means provided on the film or a cartridge storing the film, the film feeding method can be selected based on the selection information read from the storage means. It is possible to choose.

Further, selection information indicating the selected film feeding method and frame number information are recorded in the storage means, and by reading out the selection information and frame number information written in the storage means, the entire number of frames can be photographed. Even if a cartridge that has not been completed is taken out midway, when the cartridge is loaded again, it is possible to select the film feeding method for shooting and feed the frames to the shooting position during shooting.

In addition, by making it possible to change the selection of the film feeding method only before the first photograph is taken, there is no risk of mixing different film feeding methods within one film. By prohibiting the operation of feeding the first frame of the film to the shooting position from being repeated more than a predetermined number of times in accordance with the change in the method, the film can be fed without limit and the film may be damaged. This will be prevented.

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

FIG. 1 is a configuration diagram showing an embodiment of the camera of the present invention.

In FIG. 1, reference numeral 1 denotes an arithmetic/control circuit that controls each section described below, and includes a CPU, RAM, ROM, and the like. Reference numeral 2 denotes an information writing/reading device for writing and reading information into and from a storage means provided in the patronage, which will be described later, and has a contact pin 2a for connection with the storage means. 3 is a photographing control system that performs shutter control, aperture control, photometry operation control, distance measurement operation control, etc.; 4 is a motor control circuit that controls a motor (M) 5 that performs film winding and rewinding operations; 6; is a film encoder that detects the amount of film movement. The film encoder 6 is realized by a known method such as counting perforations using a photo coupler or detecting the rotation of a fleece projector linked to the film. A display control circuit 7 causes the display 8 to display information such as the type of film feeding method, the number of frames, and warnings. Reference numeral 9 denotes a first frame number counter that counts the number of frames according to the amount of film movement detected by the film encoder 6. This first piece number counter 9
is the number of frames counted from the film reader section that is facing the lens and ready for exposure, or the number of frames counted from the end of the film cartridge 10 that is fixed to the spool 12. The first frame number counter 9 faces the lens to indicate whether it is in the exposure standby state.
The number of pieces counted is displayed on the display 8 in real time. Reference numeral 9a denotes a second frame number counter provided separately from the first frame number counter 9, and is used to count the number of pieces, the details of which will be described later.

The state of the film feeding method set in the camera is called a feeding mode, the normal winding method is called a normal winding mode, and the preliminary winding method is called a preliminary winding mode.

Further, SWI is a main switch for turning on the power of the camera, SW2 is a half-press switch, and SW3 is a full-press switch. SW4 is a mode changeover switch for changing over the film feeding method, and each time this mode changeover switch SW4 is pressed, the normal winding mode and the preliminary winding mode are alternately displayed on the display 8. SW5 is the rewind switch that instructs to rewind the film, SW6 is the back cover switch that is turned on when the camera back is locked, and SW7 is turned on when the cartridge is loaded in the camera's cartridge chamber. It is a patrone presence/absence switch.

10 is a cartridge for storing the film 11; a spool 12 for winding the film 11;
0 has a memory board 13 installed on top of the memory board 13. This memory board 13 includes an E2PROM 13a which is a storage means for storing feeding mode information and frame number information, and an E2PROM 13a which is a storage means for storing feeding mode information and frame number information.
A plurality of contacts 13b connected to input/output bins (not shown) of the 2PROM 13a are provided. A lid 14 holds the memory board 13 between it and the upper surface of the cartridge 10, and has a plurality of holes 14a corresponding to the positions of the contacts 13b of the memory board 13. When the cartridge 10 is loaded into the cartridge chamber of the camera, the contact pin 2a of the information writing/reading device 2 penetrates the hole 14a and contacts the contact 13b, and the information writing/reading device W2 and E
2 PROM 13a.

Next, information recorded in the E2PROM 13a will be specifically explained.

(1) Feeding mode information It is composed of 2 bits so that three types of states can be identified as shown below.

■roo,: Feeding mode information not recorded ■roi,: Normal winding method ■rlOJ: Preliminary winding method (2) Frame number information This frame number information is indicated by numerical data Nx, and is used immediately before the cartridge is removed from the camera. This indicates how many frames, counting from the leader section of the film, were facing the lens at the end of shooting, and also includes information indicating that all frames have been shot.0For example, If the total number of frames in the film is 36, then 2'< 36 < 26, so
The data part of the number of pieces should consist of 6 bits, and
As a method for indicating the completion of all frame photography, for example, it may be configured to indicate the completion of all frame photography when all 6 bits of the numerical data Nx are rl, but another method is to indicate the completion of all frame photography in addition to the above 6 bits. One bit may be added to indicate the end of photography.

Note that it can be determined that the feeding mode is unrecorded by the fact that the data in the frame number information N indicates the first frame, so the feeding mode information does not indicate that the feeding mode information is not recorded. It is also possible to configure the feeding mode information with one bit.

The operation of the camera described above will be explained with reference to a flowchart. However, two types of embodiments will be described depending on the display method of the number of frames counted by the first frame number counter 9. Figure 2 is a main flowchart common to the first and second embodiments, Figures 3 to 7 are flowcharts of subroutines in the first embodiment, and Figures 8 to 11 are flowcharts of subroutines in the second embodiment. 3 is a flowchart showing a subroutine.

The number of frames is displayed in 1, 2, 3, etc. numbers displayed on the display section 8 of the camera each time a photograph is taken. . . . n (n is the total number of frames on the film) is added to the forward calculation formula, and each time a picture is taken, the numerical value displayed on the camera's display section 8 is n, n-1,
n-2,..., 2.1 and the subtraction formula being subtracted
There are different types. That is, the former forward counting method has the advantage that it is easy to know how many frames have been photographed at present, and the latter subtractive method has the advantage that it is easy to know how many frames remain to be photographed.

In the first embodiment, a forward calculation formula is used in the normal winding mode, and a subtraction formula is used in the preliminary winding mode. In this case, since the direction in which the number of frames is counted is opposite between the normal winding mode and the preliminary winding mode, there is a risk that the user may confuse the meaning of the number on the frame number counter. In the second embodiment, the forward calculation formula is always used regardless of the film feeding mode, so the above-mentioned drawbacks are eliminated.

By the way, the number of film frames is counted in the opposite way in normal winding mode and pre-winding mode, so let's define it. In other words, if the total number of film frames is n frames, in normal winding mode, the number of film frames is counted in the opposite way. The pieces are counted as the 1st piece, the 2nd piece, .

On the other hand, in the preliminary winding mode, the first frame, second frame, .

Count as nws.

(1) First Embodiment The first embodiment will be explained with reference to the main flowchart in FIG. 2, and the operations shown in each subroutine will be explained in detail after the explanation of the main flowchart.

First, the main switch SW1 is turned on, the back cover of the camera is closed, and the process starts when the back cover switch SW6 is turned on. First, the cartridge presence/absence switch SW determines whether or not the cartridge 10 is loaded in the cartridge chamber of the camera.
7 is turned on and off (step 101), and if the presence of the cartridge 10 is detected, the feeding mode information of the E2PROM 13a of the loaded cartridge 10 is read out to determine whether the feeding mode is recorded. In step 1O2), if the feeding mode is recorded, the film is one in which at least some frames have been photographed; if the feeding mode is not recorded, the film is new. In the case of a new film, the normal winding mode is unconditionally set as the feeding mode (step 103);
Subsequently, it is determined whether or not the mode changeover switch SW5 has been operated to change the feeding mode (step 104). If the change operation has not been performed, the process moves to step 106, and the change operation is performed. If it is, the feeding mode is changed (step 105).Next, it is determined whether or not the half-press switch SW2 is pressed, that is, whether or not the feeding mode is confirmed (step 106). Steps 104 to 106 are repeated until the half-press switch SW2 is pressed and the feeding mode is confirmed.
The feeding mode can be reset repeatedly. if,
If the feeding mode is normal winding mode, there is no need to reset it.When the half-press switch SW2 is pressed in step 106, the mode change counter is reset (step 7 107), and the preparatory winding (1
).

The mode change counter mentioned above is a counter that is used to move the first frame of the film to a position facing the lens in response to a change in the feed mode before photographing the first frame due to the change in the feed mode. This is used to prohibit an action from being performed more than a predetermined number of times. In other words, when a certain feeding mode is set, the first
The piece is moved to a position facing the lens, but the first piece is still
It is possible to change the feeding mode at a time when no frame has been photographed, and if the feeding mode is changed at this time, the entire length of the film is wound or rewound, and the changed feeding mode is changed. The first frame corresponding to the mode is moved to a position facing the lens. However, it is undesirable to carry out such changes indefinitely because there is a risk of scratches on the film due to the film feeding operation. a predetermined number of times.

For example, the feeding mode may be changed up to twice, and further changes in the feeding mode are prohibited. That is, the mode change counter is used to count the number of times the feeding mode has been changed after preparation for photographing the first frame.

However, as described above, the feeding mode can be changed without limit at steps 104 to 106 before preparation for photographing the first frame.

If it is determined in step 102 that the feeding mode has been recorded, this means that a film on which at least one frame has been photographed is loaded. The frame number information is read from the E2PROM 13a (step 109), and it is determined whether or not all frames have been photographed in accordance with the data indicating that all frames have been photographed, which is included in the read frame number information (step 110). In step 111), a warning that all frames of the film have been photographed is displayed on the display 8.In step 112, it is determined whether or not the cartridge presence/absence switch SW7 detects that the cartridge has been taken out. If the collection has been completed, the operation is terminated; if the collection has not been completed, the process returns to step lll.

In the above step 110, if all the frames have not been photographed, the feeding mode information recorded in the E2PROM 13a is read and the feeding mode is set according to this feeding mode information.Step 113>, half-press switch SW
2 is pressed (step 114), and if the half-press switch SW2 is on, the process moves to step 108. Note that there is no problem in operation even if step 114 is omitted.

Then, according to the set feeding mode, a preparatory winding operation (1) is performed to move the film to the first frame in the case of a new film, or to the next frame to be photographed in the case of a new film. (Stella 1108), then it is determined whether there has been an operation to change the feeding mode (step 115'), and if there has been no operation to change the feeding mode, it is determined whether the rewind switch SW5 has been operated or not (step 117). , if there is an operation to change the feeding mode, the feeding mode changing process shown in the subroutine (step 116) is performed.
After that, the process moves to step 117, and the rewind switch SW is pressed.
5 is on or off (step 117), and if it is on, the intermediate rewind point F! (Proceeds to step 124 via step 123>, and if it is off, determines whether half-press switch SW2 is on or off. Step +18>; if off, returns to step 115; if on, photometry is performed by the shooting control system 3. The operation and distance measuring operation are performed (step 119), and then it is determined whether the fully pressed switch SW3 is on or off (step 120).
), if it is off, the process returns to step +15, and if it is on, it returns to the full press process (step 121) shown in the subroutine.
), it is determined whether the return flag is set or reset (step 122), and if it is set, the process returns to step 115, and if it is reset, a warning is given that rewinding is complete and a message is sent to take out the cartridge. A recommendation message is displayed on the display 8 (step 124).
+ It is determined whether or not the removal of the cartridge 10 is completed by turning on or off the cartridge presence/absence switch SW7 (step 125), and if the removal of the cartridge 10 is completed, the operation is terminated, and if it is not completed, step 1 is performed.
Return to 24.

Next, the preparation winding process (1) of step 10g in the first embodiment will be explained with reference to the flowchart of FIG. This preparatory winding process (1) is a process performed to wind the film according to the feeding mode and prepare for photographing.

First, the feeding mode determined in the previous step 106 or 114 is determined (step 201>, and if it is the normal winding mode, the normal winding mode is displayed on the display 8 (step 202>, feeding mode information in the E2PROM 13a). Check whether there is a record of (step 20)
3>, if there is no recording, the value of the first frame number counter 9 is set to -3 (step 204), this -3 means that the amount by which the film reader portion should be skipped is 4t9]
This is because it corresponds to minutes. To start winding the film, step 205), to determine whether or not the film has been wound by 0.1 frame (step 206), returns to step 206 and returns to step 206 if the answer is "N", that is, if the film has not been wound by 0.1 frame.

In other words, if it has been rolled up by 0.1 frame, 0.1 is added to the value n of the first frame number counter 9 (step 207), 1.0.
Step 208), r
, N, that is, if it has not been rolled up by one frame, the process returns to step 206, and if it is "Y", that is, it has been rolled up by one frame, it is determined whether n matches 1 or not (step 209).
, "N", that is, if n is not 1, the process returns to step 206, and if "Y", that is, n is 1, the winding operation is stopped (step 210). As a result, the 1st F% 1st eye of the film is set at a position facing the lens.

In step 203, if there is a record of feeding mode information, that is, if the film in the loaded cartridge has been used halfway, steps 204 to 208 in steps 7 above
Perform the winding operation in the same manner as yX (steps 211 to 21
5), it is determined whether or not the result n matches the number N of pieces in the piece number information.
"Y", that is, n force (if it matches Nx, the winding operation will be stopped (Step 7 217), as a result, E"
Number of frames N of frame number information recorded in PROM13a4
The piece force corresponding to x (is set in a position facing the lens).

In addition, in step 201, the feeding mode force (if it is the pre-I winding mode, the pre-winding mode is displayed (step 218>, E2PROM l
3 Check the presence or absence of the feeding mode information record GA in a (
Step 219), if there is no record &f Set the value of the first piece number counter 9 to -3.
+ Step 7 to start winding the film 221
＞, o, If the force (distortion force) that was rolled up by 198 minutes is determined by Step 222), "N", that is, if the winding is not done by 0.1V by 4 minutes, step 222↓ returns to "Y".
J, i.e. 0. If you wind up 1'g for 4 minutes, the above n
0.1 is added to step 223), and step 7 224 is determined to determine whether the film has been wound to the end.
>, "N", that is, if it has been wound up to the end and there is no zero, the process returns to step 222, and "Y", that is, if it has been rolled up to the end, the winding operation is stopped (step 225
> , and the half end portion of the film fed by the above-mentioned film winding operation <ji! ! 〉 corresponding to the part below the decimal point of the number n (step 226 〉
As a result, a frame corresponding to the last frame of the film is set at position number 2 facing the lens. Note that the end of the film in the step 224 is determined by detecting the occurrence of a tension force on the film using a known detection means.

In step 219, if there is a record of feeding mode information, that is, if the loaded/<9-low piece film is partially used, the steps 220 to 220
The winding operation is performed in the same manner as in step 223) (step 228
〜230) As a result, it is determined whether or not the winding has been completed by 1.0 pieces. Step 7 23)
．． If it has been rolled up by 0 frames and not 1 (f), return to step 229, and if it is "Y", that is, if it has been rolled up by 1.0 frames, it is determined whether or not n matches the number of frames Nx in the frame number information.
1p232〉, “N”.

That is, if n does not match NX, the process returns to step 229, and if "Y", that is, n matches Nx, the &f winding operation is stopped (step y step 233). ) The frame corresponding to the number Nx of the frame number information is set at a position facing the lens.

Next, the operation of the feeding mode changing process in step 116 described above will be explained with reference to the flowchart of FIG. This feeding mode changing process is performed when changing the feeding mode when the feeding mode is set and the first frame of the film is set in a position facing the lens.

First, check whether the first frame has not been photographed or not (Step 7, step 30).
1), if it is "N", the feeding mode has not been changed to 8, so the feeding mode changing operation performed in step 115 is invalidated, and a message indicating that the feeding mode changing operation has been invalidated is invalidated. Display on display 8 as a warning step 302
>, if “Y”, it is determined whether the mode change counter described above is less than a predetermined number of times (step 303), and “N
”, then further changes in the feeding mode are prohibited, so the process moves to step 302 and a warning is issued that the change operation is invalid; if “Y”, the feeding mode change made in step 115 is executed. The feeding mode is newly set based on the operation (step 304), ■ is added to the value of the mode change counter (step 305), and the feeding mode is newly set (step 304).
The preparatory winding operation (■) is performed according to the newly set feeding mode (step 306), and the process moves to step 117.
21 is different between the first and second embodiments, so the first embodiment will be explained with reference to FIG. 7, and the second embodiment will be explained with reference to FIG. 11. I'll explain later.

The preparation winding process (2!J) corresponding to the first embodiment will be explained with reference to FIG. This is done to set the first frame of the film in a position facing the lens in response to changes.

First, it is determined whether the newly set feeding mode is the normal winding mode or the preliminary winding mode (step 601) + If the feeding mode is the normal winding mode, rewinding of the film is started.Step 602. ), 0
．． Step 603 to determine whether or not one frame has been rewound.
), if it is "N", that is, it has not been rolled up by 0.1 frame, the process returns to step 603, and if it is "YJ", that is, if it has been rolled up by 0.1 frame, the value n of the first frame number counter 9 is subtracted by 0.1. 604), it is determined whether or not it has been rewound by 1.0 frame or not. Step 605) is "N", that is, if it has not been rewound by 1.0 frame, the process returns to step 603, and "Y" is determined.
”, that is, if it has been rewound by 1.0 frames, it is determined whether n is 1 or not (step 606); if “N”, that is, n is not 1, the process returns to step 603, and “Y”, that is, n is If 1, the rewinding operation is stopped and the first frame of the film is set in a position facing the lens (step 60).
7> Proceed to step 117. Also, step 601
In step 608), if the newly set feeding mode is the pre-winding mode, it is determined whether or not the film has been wound for 91 minutes to start winding the film. If the winding has not been completed, the process returns to step 609 and the
If "Y", add 0.1 to the value n of the first frame number counter 9 (step 610) = determine whether the end of the film has been detected or not (step 611), "NJ", that is, the end of the film has been detected. If not, return to step 609,
If "Y" is detected, that is, the end is detected, the winding is stopped (Step 612), the half-end bone is rewound, the final frame of the film is set in a position facing the lens (Step 613), and the process moves to Step 117. .

Next, the full press process in step 121 mentioned above will be explained with reference to FIG. In this full press process, processes related to photographing and frame advancing operations are performed.

First, by turning on the full-press switch SW3 in the previous step 120, an exposure operation is performed (step 401), and it is determined whether the feeding mode is the normal winding mode or the preliminary winding mode (step 402). The film winding operation starts (step 4).
03), it is determined whether or not the winding for 0.1 frame has been completed (step 404).
"Y"

That is, if 0.1 frame has been rolled up, 0.1 is added to the value n of the first frame number counter 9 (step 40).
5), 1. It is determined whether or not the winding for Ows has been completed (step 406), and if it is "Y", that is, the winding for 0.1 frame has been completed, the winding is stopped.Step 4
16), set the return flag and proceed to step 122 (step 417), and step 40
If it is "N" in step 6, that is, 1.0 frame has not been wound, it is determined whether the end of the film has been detected (
Step 407〉, "N", that is, if the end is not detected, return to step 404; if "Y", that is, the end is detected, start rewinding. Step 40g), 0
．． It is determined whether or not one frame has been rewound (step 409), and if "N", that is, 0.1 frame has not been rewound, the process returns to step 409, and ry, that is, 0.1 frame has been rewound. If it has been rewound, the value n of the first frame number counter 9 is subtracted by 0.1 (step 410), and it is determined whether the value n of the first frame number counter 9 has become -3 (step 411). "N", that is, if n is not -3, return to step 409 and continue the rewinding operation, "Y",
That is, if n is -3, the rewinding operation is stopped (step 412), and all-frame shooting completion data indicating that all-frame shooting has been completed and feeding mode information are recorded in the E2PROM 13a as frame number information NX. Step 41
3.414), reset the return flag (step 415), and if it is determined in step 402 that the mode is pre-winding mode, start rewinding (step 418), check whether 0.1 frame worth of rewinding has been completed. If the sternum is not unrolled, return to step 419).
If "Y", that is, O,l, the sternum is unwound, the value n of the first frame number counter 9 is subtracted by 0.1 in step 42.
0 ) + Determine whether n is less than 1 or not Step 4
21), "N", that is, if n is 1 or more, it is determined whether or not it has been rewound by 1.0 frame.Step 422>, "
N'', that is, if 1.0 frames have not been rewound, the process returns to step 419 to continue the rewinding operation; O If the sternum has been rewinded, the rewinding is stopped (step 423 ) + a return flag is set (step 417 > proceed to step 122 ).Furthermore, in step 421 , "Y", that is, the value of the first frame number counter 9 is set. If the value n is smaller than 1, it is determined whether or not 0.1 frame has been rewound (step 424).
If it has not been rewound by one frame, the process returns to step 424, and if it is "Y", that is, if it has been rewound by 0.1 frame, the value n of the first frame number counter 9 is subtracted by 0.1, and step 4
25), to determine whether n is less than -3, step 426>, "N".

That is, if n is less than -3, the process returns to step 424 and continues the rewinding operation, and if n is "Y", that is, n is -3.
If it is smaller, stop rewinding (step 427)
, proceeding to step 413 and performing step 414 described above.
, 415 are performed.

Next, the intermediate rewinding process in step 124 described above will be explained with reference to FIG. 6. This midway rewinding process is performed in order to rewind the film into the cartridge and take it out before the photographing of all frames of the film is completed.

First, the value n of the first frame number counter 9 is set to the frame number information NX (step 501), and the rewinding operation is started (step 502 >, o, check whether the rewinding of 1 quasi has been completed or not. is determined (step 503), and if it is "N", that is, it has not been rewound by 0.1 frame, step 5
01, and if it is "Y", that is, 0.1 frame has been rewound, the value n of the first frame number counter 9 is subtracted by 0.1 (step 504), and the value n of the first frame number counter 9 is Step 505〉, "N",
That is, if n is not -3, return to step 503 and continue rewinding, and if "Y", that is, n is -3, it means that the film has been rewound to the leader section, so rewinding is stopped ( Step 506 ), N of the number of pieces information
Record X in E2PROM 13a (Step 507)
, proceed to step 124.

121 Second Embodiment In the second embodiment, explanations of operations similar to those of the first embodiment will be omitted, and explanations will be focused on operations that are different.

The preparation winding process (1) in step 108 corresponding to the second embodiment will be explained with reference to the flowchart in FIG. Since they are exactly the same, their explanation will be omitted.

If it is determined in step 701 that the feeding mode is the preliminary winding mode, the preliminary winding mode is displayed (step 718), and the E2FROMI
Step 719) of checking whether the feeding mode information is recorded in step 3a), and if there is no recording, the first frame number counter 9
Set the value n to -3 (Step 720) and start winding the film (Step 721 >, o
, Step 72 to determine whether it has been wound up by one frame or not.
2>, if it is "N", that is, 0.1 frame has been wound up, return to step 722, and "Y", that is, 0.1 frame.
If it has been wound up by the number of frames, add 0.1 to n (step 723'), determine whether the end has been detected or not (step 724), and if "N", that is, the end has not been detected, step 722 Returns to "Y", that is, if the end is detected, the winding operation is stopped (step 725), and the half end of the film fed by the above-mentioned film winding operation is calculated after the decimal point of the number of frames n. (Step 7)
26) As a result, the frame corresponding to the final frame of the film is set in a position facing the lens.Next, the value n of the first frame number counter 9 is numerical data indicating the total number of frames of the loaded film. Step 727
), and at the same time, n is set to m, which is numerical data stored in the second frame number counter 9a (step 728).
).

Then, the numerical data n of the first frame number counter 9, which is displayed externally on the display 8 in real time, is set to 1 (
Step 729 ), the process moves to step 115 .

In step 719, if the feeding mode information is recorded, that is, if the film is in use, the film is wound up in the same manner as in steps 720 to 723 (steps 730 to 733), and the film is wound up for 1.0 frame. Step 734), r N , +
, that is, if it has not been wound up by 0-1 frames, return to step 732 and select "Y".

In other words, if it is wound up by 0.1 piece, n is E2
Step 735) to determine whether it matches the value of the frame number information Nx recorded in the PROM 13a; if "N", return to step 732; if rYJ, stop the winding operation (step 736); The value m of the frame number counter 9a is equal to the value n of the first frame number counter 9, that is, the above E2.
Set the frame number information Nx recorded in PROMI 3a (step 737), and set the value n of the first frame number counter 9.
(Step 738)
, the process moves to step 115. As a result, the number of frames is displayed in a forward counting manner even in the preliminary winding mode.

Next, the preparation winding process (2) of the Stella 7306 in the second embodiment will be explained with reference to FIG. 11, and the operations in steps 65) to 657 in FIG. The behavior is exactly the same as that of
The explanation will be omitted.

In step 65), if the newly set feeding mode is the preliminary winding mode, the film is started to be wound in step 65g), and it is determined whether the O, L sternum has been rolled up or not in step 659>, "N"; That is, 0.
If it has not been rolled up by one frame, the process returns to step 659, and if it is "Y", that is, if it has been rolled up by 0.1 frame, 0.1 is added to the value n of the first frame number counter 9; step 660>; Step 661) to determine whether the end has been detected; if "N", that is, the end has not been detected, return to step 659; if "Y", that is, the end has been detected, to stop winding. 6
62), rewind half of the film and set the final frame of the film in a position facing the lens (step 663).
Next, the value n of the frame number counter 9 is set to numerical data NMAX indicating the total number of frames of the loaded film (step 664), and n is also set to the second frame number counter 9a.
Stella 7665) + set the value n of the first frame number counter 9 to 1 (step 666),
As a result, when the feeding mode is newly set to the preliminary winding mode, 1 will be displayed on the display 8.

Next, in the second embodiment, the operation of the midway rewinding process in step 121 will be explained with reference to FIG.
Since it is exactly the same as 415, the explanation will be omitted.

If it is determined in step 802 that the mode is pre-winding mode, start rewinding (step 8) 8>, and determine whether 0.1 frame has been rewound or not (step 8) 9>
, "N", that is, if 0.1 frame has not been rewound, return to step 8)9.

If "Y", that is, 0.1 frame has been rewound, the value m of the second frame number counter 9a is calculated by 0.11.Step 8
20), determine whether m is smaller than 1 or not (Step 8)
21), rN, that is, m is greater than or equal to 1, it is determined whether or not 1.0 frame has been rewound.Step 822), ``
If it is ``N'', that is, it has not been rewound by 1.0@ minutes, return to step 8) and continue the rewinding operation, and if ``Y'', that is, it has been rewound by 1.0'N4 minutes, it will stop rewinding. Step 823) + 1 is added to the value n of the first frame number counter 9. Step 824) sets a return flag (Step 8) and the process moves to Step 122. Also, in step 821, ry, that is, the second
If the value m of the frame number counter 9a is smaller than l, it is determined whether or not 0.1 frame has been rewound.Step 425), "N"
, that is, if it has not been rewound by 0.1 frame, return to step 825, and if it is "Y", that is, if it has been rewound by 0.1 frame, the value m of the second frame number counter 9a is subtracted by 0.1. Step 826), it is determined whether m is less than -3 or not (Step 827), "N", that is, if m is less than -3, the process returns to step 825 to continue the rewinding operation; In other words, if m is smaller than -3, rewinding is stopped (Step 82g), Step 8)3
Then, the processing of steps 8)4 and 8)5 is performed.

Next, in the second embodiment, the operation of the full press process in step 123 will be explained with reference to FIG.
Since it is exactly the same as 7, the explanation will be omitted.

If it is determined in step 901 that the feeding mode is the preliminary winding mode, the value m of the second frame number counter 9a is set to the frame number information Nx (step 909), and rewinding is started (step 910) -0゜It is determined whether or not the sternum has been rewound. Step 911〉"N1. In other words, if the sternum has not been rewound by 0.1 frame, step 91
1, and subtract the value m of the second frame number counter 9a by 0, if it has been rewound by 0.1 frame (step 912), and set the value n of the first frame number counter 9 to 0.
．． Add 1 (step 913). Then, it is determined whether the value of m is smaller than -3 or not (step 914), "
If "N", that is, m is not smaller than -3, return to step 911; if "Y", that is, m is smaller than -3, stop rewinding (step 915), and set the frame number information Nx. Record in the E2 PROM 13a (step 916). As a result, when half-way rewinding is performed in the preliminary winding mode, the frame number information NX, which was counted in the forward calculation method, is recorded in the E2PROMI 3a.

Furthermore, as shown in the flowchart of Fig. 2,
After the preparatory winding process tt+ in step 10g, if the feeding mode has been changed repeatedly in step 115 and the predetermined number of times has been reached, even if the feeding mode is changed again, as shown in FIG. As explained in step 302, if you really want to change the feeding mode in such a case, the film is rewound by operating the rewind switch SW5 in step 117.
Once the cartridge 10 is removed from the camera (steps 123 to 125) + this cartridge is loaded into the camera again and the steps are executed from step 101, step 1
Since the mode change counter is reset at 07, any feeding mode can be selected.

In the above embodiment, E2PROMI is used as a storage means for recording feeding mode information and frame number information.
3a, but the present invention is not limited to this. For example, as shown in USP No. 4,864,332, a magnetic recording medium is provided in the leader section of the film, and the camera is brought into contact with this magnetic recording medium. A magnetic recording medium is provided as shown in FIG. 1, and the above information is recorded on this magnetic recording medium.
In this case, information is recorded and reproduced only when the film is rewound into the cartridge or when the film is pulled out of the cartridge.

Further, as shown in Japanese Patent Application Laid-Open No. L-23343, a magnetic recording section is provided on the side surface of the cartridge, and information recording means and information detecting means for recording information on the magnetic recording section in the cartridge chamber of the camera. may be provided to obtain the same effect. In this case, information is recorded and reproduced only when the cartridge is loaded into the camera or taken out.

In addition, in the embodiment, after the feeding mode is set, the setting of the feeding mode can be changed until the first frame of the film is shot. However, once the feeding mode is set, may be configured to prohibit changing the feeding mode.

[Effects of the Invention] As explained above, according to the camera of the present invention, either the normal winding method or the preliminary winding method can be arbitrarily selected as the film feeding method. You can select the film feeding method suitable for your needs.

Further, by prohibiting the two methods, the normal winding method and the preliminary winding method, from being applied to one film by the selection means, different film feeding methods are not applied to the same film.

Further, by recording selection information indicating the selected film feeding method in the storage means, it becomes possible to read out the selection information from the storage means and select the film feeding method. Therefore, if you reload the cartridge midway through 5, take it out of the camera, load it into the camera again, and perform a blank advance for a number of frames other than the number of frames at the time of shooting, it is possible to resume shooting with all the frames that were taken at the time of rewinding midway. becomes.

In addition, the selection Ml indicating the selected film feeding method and frame number information are recorded in a storage means provided on the film or a cartridge that stores this film, and the selection information and frame number information written in this storage means. By reading this, when a cartridge that has been partially rewound and taken out of the camera is loaded into the camera again, it is possible to select the film feeding method at the time of shooting and feed the frame at the time of shooting to the shooting position.

In addition, by making it possible to change the selection of the film feeding method only before shooting the first frame, it is not possible to change the feeding mode after shooting the first frame. Since the stored film is photographed in one feeding mode from beginning to end, the arrangement of the frames on the film and the photographing order match, and confusion does not occur. Further, before the first frame is photographed, the feeding mode can be changed and film preparation and feeding can be performed accordingly, which has the advantage of being able to flexibly respond to changes in photographing conditions.

Furthermore, by prohibiting the operation of feeding the first frame of the film to the shooting position to be performed more than a predetermined number of times in accordance with the change in the selected film feeding method, it is possible to prevent the film from being wound over the entire length of the film. Since the return or winding is not repeated more than a predetermined number of times, there is no risk of the film being scratched.

[Brief explanation of drawings]

FIG. 1 is a constituent country showing an embodiment of the camera of the present invention, FIGS. 2 to 7 are operational flowcharts in the first embodiment, and FIGS. 8 to 11 are operational flowcharts in the second embodiment. It is. ■...Arithmetic control circuit, 2...Information writing/reading device, 2a...Contact bin, 3...Photography control system, 4...
...Motor control circuit, 5...Motor, 6...Film encoder, 7...Display control circuit, 8...Display device, 9...First frame number counter, 9a...Second Frame number counter, 10...Patrone, 11...Film, 1
2... Spool, 13-... Memory board, 13a...
・E2PROM. 13b... Contact, 14... Lid, SWI... Main switch, SW2... Half-press switch, SW3... Full-press switch, SW4... Mode changeover switch, 5W5
-・Rewind switch, SW6...back cover switch, S
W7... Patrone presence/absence switch. Step 117 Second [ Step 117 Step 124 Step +17 Funeral diagram Step +17 ◆ Step 124 Figure 10 Step 305 Step 117 Figure

Claims (8)

[Claims] (1) Selection means for selecting either a normal winding method or a preliminary winding method as a film feeding method; and two of the normal winding method and the preliminary winding method.
and prohibition means for prohibiting the selection means from applying two methods to one film. (2) Selection means for selecting either the normal winding method or the pre-winding method as the film feeding method, and selection information indicating the film feeding method selected by the selection means for storing the film or the film. A camera characterized in that it has writing means for recording in a storage means provided in the cartridge. (3) Selection means for selecting either the normal winding method or the preliminary winding method as the film feeding method, and selection information indicating the film feeding method selected by the selection means and frame number information for the film or the film. A camera comprising: a writing means for recording in a storage means provided in a cartridge for storing film; and a reading means for reading selection information and frame number information written in the storage means. (4) A camera according to claim 3, wherein the selection means selects the film feeding method indicated by the selection information read out from the storage means of the loaded film by the reading means. (5) The camera according to claim 4, further comprising film feeding means for preparing and feeding the film according to the frame number information read out by the reading means. (6) In claim 5, the film feeding means winds and prepares the film for pre-feeding, regardless of whether the film feeding method is set to the normal winding method or the preliminary winding method. Camera to do. (7) In a camera that has a selection means for selecting either the normal winding method or the preliminary winding method as the film feeding method, the selection of the film feeding method by the selection means must be changed before the first frame is photographed. A camera that is unique in that it is possible only in (8) In claim 7, prohibition means for prohibiting the operation of feeding the first frame of the film to the photographing position from being performed more than a predetermined number of times in response to a change in the film feeding method selected by the selection means. A camera characterized by having: