JP3579625B2 - Film winding manual camera - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a manual film wind-up camera which can manually wind up a film of a brownie plate without perforation by operating a wind-up lever.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a film winding manual camera capable of winding a film of a brownie plate having no perforation by one frame by manually operating a winding lever has been known.
[0003]
In this conventional manual film winding manual camera, the back cover is opened, the film is set on the camera, and the winding operation of the winding lever is repeated a plurality of times. After that, the start mark was positioned, and then the back cover was closed, and the winding lever was wound up a specified number of times to position the first frame of the film on the aperture.
[0004]
[Problems to be solved by the invention]
By the way, in this conventional manual film wind-up camera using a brownie plate film, there is no mechanism for detecting whether or not the film is set in the camera body, and only an operation of driving a shutter (a so-called empty shutter operation) is performed. Or empty release operation), first load a dummy film on the spool and close the back cover, then operate the release button to operate the shutter while also taking up the film, or move the shutter to the camera side. A mechanism for enabling the empty shutter operation is provided, and after performing a predetermined operation, the empty shutter operation is performed.
[0005]
However, in the former case, a dummy film must be loaded, and in the latter case, a special operation member must be operated. Operation is very troublesome.
[0006]
Therefore, in order to mechanically detect whether or not a film is loaded, it is conceivable to provide a film presence / absence detection switch on the camera body.However, the presence / absence of the film is detected by a film holding lever provided on the spool. With this configuration, it is not possible to reliably detect the presence or absence of a film when films having different diameters are loaded, and if a configuration is provided with a film presence / absence detection switch near the aperture of the camera body, the structure becomes complicated. As a result, the cost increases, and there is a limit in mechanically detecting the presence or absence of the film.
[0007]
Also, it is desirable to be able to perform aerial photographing even when no film is loaded, and in such a case, the camera can automatically determine and release the camera. This is convenient and convenient.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a film winding manual camera capable of detecting the presence or absence of a film by software without providing a mechanical film presence / absence detection switch exclusively. Is to provide.
[0009]
[Means for Solving the Problems]
The film winding manual camera according to claim 1 of the present invention is a film winding manual camera capable of winding a film having no perforation by manually operating a winding lever.
Pulse generating means for generating a pulse according to the feeding of the film,
A back cover opening / closing detecting means for detecting opening / closing of a back cover provided to be capable of opening and closing on the camera body,
At least once after closing the back cover, the film is wound by operating the winding lever from the operation start position to the operation stop position by the maximum amount of movement, thereby counting the number of pulses generated based on the pulse generation means and counting the film. Film presence / absence determination means for determining the presence / absence of a film.
[0010]
The film winding manual camera according to claim 2 of the present invention is a film winding manual camera capable of winding a film having no perforation by manually operating a winding lever.
Pulse generating means for generating a pulse according to the feeding of the film,
A back cover opening / closing detecting means for detecting opening / closing of a back cover provided to be capable of opening and closing on the camera body,
After closing the back cover, lift up the lever Manipulate A film presence / absence determination means for counting the number of pulses generated by the pulse generation means during the operation to the operation stop position twice to determine the presence / absence of a film is provided.
[0011]
In the film winding manual camera according to claim 3 of the present invention, in the invention according to claim 2, the film presence / absence detecting means operates the winding lever first to the operation stop position after closing the back cover. It is characterized in that a counting operation is performed on a pulse generated after the operation is performed, and a film presence / absence determining operation is performed.
[0012]
The film winding manual camera according to a fourth aspect of the present invention is characterized in that when the film presence / absence detecting means determines that there is no film, release of the film can be permitted without locking the film. .
[0013]
The film winding manual camera according to claim 5 of the present invention is characterized in that a pulse generation inhibiting means for inhibiting the operation of the pulse generating means when the film presence / absence detecting means determines that there is no film is provided. Features.
[0014]
The film winding manual camera according to claim 6 of the present invention is configured such that when the film presence / absence detecting means determines that there is a film, the film is wound by the winding lever until one frame of the film is positioned in the aperture. And release inhibiting means for inhibiting release until one frame of the film is positioned in the aperture is provided.
[0015]
The film wind-up manual camera according to claim 7 of the present invention enables the wind-up lever to wind when the back cover is opened by the back cover open / close detection means, and performs a shutter release operation. It is forbidden.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a plan view of a manual film winding camera according to the present invention, 1 is a camera body, 2 is a winding lever, 3 is a shutter speed setting dial, 4 is a shutter button, 5 is a main switch, and 6 is a camera body 1. On the other hand, a back cover 7 that can be opened and closed is an external LCD.
[0017]
The camera body 1 is provided with a back cover open / close detection switch SW as back cover open / close detection means for detecting whether the back cover 6 is open / closed. A completion switch SW3 is provided.
[0018]
The spare angle switch SW1 is off when the winding lever 2 is in the storage position (range of 0 to 10 degrees) as the operation start position, and is on when the winding lever 2 is in the 180-degree rotation position from the 10-degree position. The winding completion switch SW3 is turned on when the rear curtain of the shutter runs, and turned off when the shutter charging is completed.
[0019]
A CPU 8 shown in FIG. 2 is provided in the camera body 1. Power is supplied to the CPU 8 by the power supply circuit 9, and a clock signal of the oscillator 10, aperture information (AV volume information) from a photographic lens (not shown) via the aperture linking member 11, and a pulse from the pulse generator 12 are input. At the same time, all data related to photographing is input from the EEPROM 13.
[0020]
The CPU 8 receives switch information of a main switch 5, a back cover open / close detection switch SW, a spare angle switch SW1, a winding completion switch SW3, a photometry switch SW4 which is turned on by operating a shutter button 4, a release switch SW6, and other switches SW7. Is done.
[0021]
The CPU 8 executes the operation control of the camera according to a control flow described later, and according to the operation state of the camera, the lighting signal of the LED 14 for illumination in the viewfinder, the display information on the LCD 15 in the viewfinder, the display information on the external LCD 7, the release magnet Mg1, In addition to outputting control information to the film locking magnet Mg2, the shutter front curtain running magnet ESMg1, the shutter rear curtain running magnet ESMg2, and the winding lock release magnet Mg3, the photometric information Bv is read by driving and controlling the six-segment photometric IC 16. It has become.
[0022]
The winding lever 2 is connected to a spool 20 via a gear ratchet mechanism 17, an electromagnetic clutch gear 18, and a gear mechanism 19, as shown in FIG. The film 22 is provided on the spool 21, and is held between the spool 21 and the spool 20 by locking the leading end of the film 22 to the spool 20. Further, the CPU 8 exchanges information with the down counter 23 and the memory 24.
[0023]
Next, the operation of the film wind-up camera according to the present invention will be described with reference to a control flow. For convenience of explanation, the state where the back cover 6 of the camera body 1 is first opened and the film 22 is set on the camera body 1 will be described.
[0024]
When the main switch 5 is turned on, as shown in FIG. 4, the CPU 8 enters a main flow process, first clears the RAM (S.1), executes initialization of the register (S.2), (S.3), the interval time as the execution interval time of the main flow is set to 125 ms (S.4), and the state signals of various switches SW, SW1, SW3 to SW7 are taken in (S.4). S.5), an operation process corresponding to the switch state is performed based on the state of each switch (S.6).
[0025]
Next, the CPU 8 determines whether or not the photometric switch SW4 has been turned on (S.7), and if the photometric switch SW4 is off (No N), performs a film feed transfer check process (S.8).
[0026]
The film feeding transition check process is a process of determining whether or not the winding lever is operated during the execution of the main flow to enter a film feeding state.
[0027]
In the film feeding, the film 22 is set with the back cover 6 opened, and the film is fed until the start mark formed on the backing paper coincides with the positioning index formed on the aperture. After closing the film 6, the cueing process of feeding the film until the first frame of film is positioned in the aperture, the winding process of winding the film 22 one frame after performing the shooting, and the film 22 after the predetermined number of shots are completed. Winding processing for winding on the spool 20, empty winding processing after execution of the winding processing, empty winding processing for enabling idle winding with the back cover 6 opened without setting the film 22, film There is idle winding processing for enabling idle winding with the back cover 6 closed without setting 22.
[0028]
Hereinafter, these processes will be described in different cases.
(1) When the back cover 6 is opened, the film 22 is hung over the spools 21 and 20, and the film is fed until the start mark matches the positioning index.
For convenience of explanation, it is assumed that the winding lever 2 is currently in the storage position and the winding completion switch is initially turned on. That is, the shutter travel has been completed and the battery is not charged.
[0029]
S. of the main flow In the film feeding transition check processing of No. 8, the CPU 8 first determines whether or not the spare angle switch SW1 is off as shown in FIG. 5 (S.101). When the wind-up lever 2 is in the stowed position, the spare angle switch SW1 is off, so the flow returns to the main flow as it is, and The process shifts to the body state check process of No. 9; the body state shift check process will be described later, and the film feed shift check process will be described first.
[0030]
S. In 101, when the winding lever 2 is operated and the preliminary angle switch SW1 is turned on, S.P. The process proceeds to 102, where it is determined whether the cueing flag is “1”. S. If no (N) in S. 103, it is determined whether the winding flag is "1" or not. If no in S.103, S.P. The process proceeds to S.104, where it is determined whether the winding completion flag is "1" or not. If no in S.104, S.S. The process proceeds to S.105, where it is determined whether the back cover open flag is "1" or not. If no in S.105, S.P. 106, it is determined whether the winding completion switch SW3 is ON or not. If NO in S.106, the flow returns to the main flow and S.P. 9 and the process proceeds to S.9. 102-S. 105, each flag is set to “1”, or If the winding completion switch SW3 is ON at step S106, the process goes to S. 107, and after executing a film feeding process described later, the process returns to the main flow and returns to S.107. The process moves to the body state check process of No. 9.
[0031]
The body state check process is a process for determining what state the camera body 1 is currently in.
[0032]
In the body state check processing, first, as shown in FIG. 6, it is determined whether or not the back cover switch SW is opened (S.201). Here, since the back cover switch SW is open, S.P. The flow shifts to 202, where the number of film frames is cleared. That is, the film display becomes blank.
[0033]
Next, the CPU 8 clears all the body state flags (S.203). Here, the body state flag is a general term for a back cover open flag, a cueing flag, a winding flag, a winding completion flag, a no-film flag, a wind flag, and a winding flag.
[0034]
Then, the CPU 8 sets the back cover open flag to “1” (S.204), and clears the pulse count end flag and the lever 1 roll presence flag (S.205, S.206).
[0035]
Next, the CPU 8 executes S. The process proceeds to 210 to determine whether or not the final number of images has been shot. S. When the answer is NO in CPU 210, the CPU 8 executes S. The routine proceeds to 214, where it is determined whether or not the preliminary angle switch SW1 is off. When the winding lever 2 is in the storage position, the CPU 8 executes S.P. 214, the determination is yes (Y). The process proceeds to 215, where it is determined whether or not the preliminary angle switch SW1 is turned off last time.
[0036]
When the previous preliminary angle switch SW1 was off, 215, the determination is yes. Jump to S.216 The flow shifts to 217, where the pulse count end flag is cleared. If the previous preliminary angle switch SW1 is ON, the winding lock release permission flag is set and S.P. 217. Since the previous preliminary angle switch SW1 is ON and the current preliminary angle switch SW1 is OFF, it is determined that the operation of the winding lever 2 has been performed, and the winding lock is released.
[0037]
When the winding lever 2 is in the middle, 215-S. 217, and jumps to S.217. 218 is made.
[0038]
S. At 218, the CPU 8 determines whether the winding completion switch SW3 is on. When the winding completion switch SW3 is turned on, S.P. The process proceeds to 219, where it is determined whether the previous winding completion switch SW3 is on. S. If the winding completion switch SW3 is off at 218, the process goes to S.P. The process then proceeds to 221 to determine again whether the winding completion switch SW3 is on.
[0039]
The take-up lever 2 is in contact with a predetermined position (not shown), and an operation stop position at which the take-up lever 2 cannot rotate any more is defined. The process is completed when the robot is rotated by the maximum angle from the start position to the operation stop position (moved by the maximum amount of movement).
[0040]
The wind-up completion switch SW3 is a switch that is turned off when the shutter charge is completed and turned on in other states. When the wind-up lever 2 reaches the operation stop position, the shutter charge is completed and turned off. That is, the fact that the winding-up completion switch SW3 is off means that the winding-up lever 2 has been operated until it reaches the operation stop position, and the CPU 8 sets the winding-up lever 2 based on the states of the preliminary angle switch SW1 and the winding-up completion switch SW3. Detects that the user has operated the maximum amount of movement from the operation start position to the operation stop position.
[0041]
S. If the answer is NO in step S219, the winding lock release permission flag is set (S.220). 221 and S.221. 219 when yes. Jump to S.220 221 is performed.
[0042]
S. 218, S.M. The route of S.221 corresponds to the state before the release process is executed. 218, S.M. 219, S.M. The route of S.221 corresponds to the state before the winding after the release process is executed. 218-S. The route 221 is for releasing the winding-up lock and enabling winding up, corresponding to the state immediately after the release processing is executed since the current winding completion switch SW3 is on and the previous winding completion switch SW3 is off.
[0043]
S. In 221, it is determined again whether or not the winding completion switch SW3 is on. S. If no in S.221, S.P. In step 222, it is determined whether or not the spare angle switch SW1 is off. After shifting to 223 and setting the release permission flag to "1", S.P. Move to 224. S. If yes in S. 222, S.M. Jump to 223 224. If NO in S. Jump to 223 Move to 224.
[0044]
S. 221, S.I. Route 224 corresponds to a state in which the operation of the winding lever 2 has not been performed yet after the release is executed. 221, S.I. 222, S.M. Route 224 corresponds to a state in which the winding lever 2 has been operated but has not yet returned to the storage position. 221-S. The route 224 corresponds to a state where the shutter is charged by the winding of the winding lever 2 and the winding lever 2 returns to the storage position, thereby setting the release permission flag.
[0045]
S. At 224, it is determined whether or not the cueing flag is "1". S. If no in S.224, S.S. The process proceeds to 225, where it is determined whether the winding flag is “1”. S. If no at 225, S.P. The process proceeds to 226, where it is determined whether or not the winding completion flag is “1”. S. If NO in S. The flow shifts to 227, where it is determined whether the back cover open flag is "1" or not. S. If NO in S. The process proceeds to 229, where it is determined whether the winding lock release permission flag is “1”.
[0046]
S. 224-S. If each flag is "1" in S. After shifting to 228 and clearing the release permission flag, S.P. Move to 229. This is to prohibit the release process while the back cover 6 is open, during the cueing of the film, and during the winding of the film.
[0047]
S. 229, if yes, At S230, it is determined whether or not the release permission flag is "1". If NO at S230, S.S. 231 to determine whether or not the spare angle switch SW1 is off. 231 when the answer is yes. Then, the process proceeds to 232, where the winding-up lock release permission flag is cleared, then winding-up lock release processing is performed (S.233), and the process returns to the main flow.
[0048]
S. If NO in S.229, S.P. 230-S. 233, and returns to the main flow. 230 if yes. 231-S. 233, and returns to the main flow. If No in S.231, S.S. 232, S.P. Jump 233 and return to the main flow.
[0049]
S. 229-S. Route 233 means a winding-up lock release process. 230 when yes. 231-S. The jump of 233 is performed to prevent double winding since the release is permitted once the winding is performed. 231 when no. 232, S.P. The reason why the process of step 233 is jumped is that if the winding-up lock releasing process is performed when the winding-up lever 2 is not at the storage position, mechanical operation will be hindered. S. In 229, the reason for returning to the main flow as it is when it is NO is that there is no need to release the winding lock.
[0050]
When the back cover 6 is opened, the back cover open flag is "1", the release permission flag is cleared, and when the winding lever 2 is in the storage position, the spare angle switch SW1 is off. After the flag is cleared and the winding lock release processing is performed, the process returns to the main flow.
[0051]
By this winding lock release processing, power is supplied to the winding lock release magnet Mg3, and winding by the winding lever 2 becomes possible.
[0052]
Next, the CPU 8 executes S.D. 10 is executed, and after execution of the display process, S.P. After performing the sleep mode interrupt return condition setting process in step S11, the process enters the sleep mode (S.12). To save power.
[0053]
Then, after the photometric switch, the release switch, and the spare angle switch SW1 are turned on or after the elapse of the interval time, the process exits the sleep mode and shifts to a film feed shift check process (S.13). S. 13 in the film feed transfer check process, The same processing as the film feed transfer check processing of No. 8 is performed.
[0054]
S. 8, S.I. In the film feeding transition process of No. 13, if the spare angle SW1 is on and the back cover 6 is opened, The process proceeds to a film feeding process 107.
[0055]
The film feeding process is a process of selecting the film feeding according to the state of the body of the camera.
[0056]
In the film feeding process, the pulse count end flag is first cleared in S301 as shown in FIG. The flow shifts to 302, where it is determined whether the back cover open flag is "1" or not. S. If No in S.302, S.P. The process proceeds to S.303 to determine whether the cueing flag is "1". If no in S.303, S.S. The process proceeds to S.304, where it is determined whether or not the film absence flag is “1”. If No in S. The flow shifts to S.305, where it is determined whether or not the wind flag is "1". If no in S.305, S.P. The process proceeds to S.306, where it is determined whether the winding flag is "1" or not. If no in S.306, S.P. The process proceeds to S.307, where it is determined whether the winding completion flag is "1" or not. If no in S.307, S.P. The flow shifts to 308, where the film interrupter as the pulse generation means 12 is turned off, and the flow returns to the film transfer check processing, and then returns to the main flow.
[0057]
S. 302 if yes. The process proceeds to S.309 to execute the idle winding process. 303. If yes in S.303, The process proceeds to S.310 to execute the cueing process. If yes in S. 311, the idle winding process is executed, and If yes in S.305, S.S. Then, the flow shifts to S.312, where a wind process is executed. If yes in S.306, S.S. Then, the flow shifts to S.313, where a winding process is performed, and S.S. If yes in S.307, S.S. The flow shifts to 314, where the idle winding process is executed. After executing these processes, the film interrupter is turned off, and the process returns to the film shift check process, and then returns to the main flow (S.308).
[0058]
Here, since the operation of the winding lever 2 is performed while the back cover 6 is opened, S.P. 302 is determined to be Yes. The flow proceeds to idle winding processing at 309.
[0059]
In the idle winding process, as shown in FIG. In step 1001, a 125 ms timer is started, and then it is determined whether or not the spare angle switch SW1 is off (S.1002). Here, the 125 ms timer is used to execute display processing every 125 ms.
[0060]
When the winding lever 2 is at a position other than the stowed position (a position in the range of 10 degrees to 180 degrees), S.P. 1002, the determination is NO. The process proceeds to 1004. S. In step 1004, it is determined whether or not 125 ms has elapsed. 1002, S.M. After the process of step 1004 is performed, when 125 ms elapses, the 125 ms timer is started again (S.1005), the switch state is input to the CPU 8 (S.1006), and the switch operation process is performed (S.1007). ) To perform display processing (S.1008). Return to 1002.
[0061]
The CPU 8 executes S.M. every 125 ms until the winding lever 2 returns to the storage position. 1005-S. The processing of 1008 is executed.
[0062]
When the winding lever 2 returns to the stowed position, S.P. 1002 is determined to be Yes. The flow shifts to 1003, where it is determined whether the winding completion switch SW3 is off or not. S. If NO in S1003, S.P. The process proceeds to S.1004. If yes in S1003, S.S. The process of 308 is performed, and the process returns to the main flow.
[0063]
When the body state checking process is started with the back cover 6 opened, S.P. 214, S.M. 215, S.M. Since the take-up lock release permission flag is set via 216, the film is fed by repeating the operation of winding up the take-up lever 2 to the maximum angle and returning it to the storage position, thereby printing on the backing paper of the film 22. The set start mark can be matched with the positioning index. In this case, S.O. When the release permission flag set in S. Since it is cleared at 228, shutter relays are prohibited. Thereby, in the operation of feeding the film until the film is aligned with the positioning index, unintended exposure can be prevented.
(2) Cueing processing
During the execution of the main flow, the CPU 8 executes S.D. When the body state check process of S.9 starts, as shown in FIG. In step 201, the state of the back cover open / close detection switch SW is determined. When the back cover 6 is closed, S.P. 201, the determination is NO. The process proceeds to 207, where it is determined whether the back cover switch SW was previously opened. When the back cover switch SW was opened last time, 208, the body state flags are all cleared, and 209, the cueing flag is set to “1”, and The process proceeds to 210 and the subsequent processing is executed. If the back cover 6 was also closed last time, 208, S.M. Jump to 209 The process proceeds to 210 and the subsequent processing is executed.
[0064]
S. In the processing after step 210, the cueing flag is set to "1". At 228, the release permission flag is cleared, so that the release is prohibited even during the cueing process.
[0065]
During execution of the process returning to the main flow, S.D. 8, S.I. When the advance angle switch SW1 is turned on by the operation of the winding lever 2, the process proceeds to S.13 in FIG. 102 is determined to be Yes. 107, and the process proceeds to S.107 in FIG. 303, the determination is YES. The cueing process of 310 is executed.
[0066]
In the cueing process, as shown in FIG. At 401, the film pulse error flag is cleared, and then the film interrupter is turned on (S.402). In 403, it is determined whether or not the winding halfway flag is “1”. It should be noted that the film pulse error flag is set in S.M. in the main processing while the winding lever is left in the middle of the winding operation. This flag is set when the sleep mode is entered in step S12.
[0067]
This winding-in-progress flag indicates that the number of cueing pulses required for setting the cueing by one operation of the winding lever 2 or the number of wide pulses necessary for feeding one frame of film are not counted. Set.
[0068]
Immediately after entering the cueing processing, the CPU 8 clears the winding-in-progress flag. 403 is NO, and S.403 is determined. The flow shifts to 404, where the number of cueing pulses (the number of pulses corresponding to the movement amount of about four frames of film) is set in the down counter 23, and then the 125 ms timer is started (S.406). The flow shifts to 407, where it is determined whether the preliminary angle switch SW1 is off.
[0069]
Since the preliminary angle switch SW1 is on until the winding lever 2 is operated to wind up and returns to the storage position, the S.P. 407 is determined to be No, and S.S. 409. S. In the film pulse count check process of S.409, first, as shown in FIG. In 2001, it is determined whether the pulse count end flag is “1”.
[0070]
At the beginning of winding, the pulse count end flag is cleared, 2001, the determination is no. The process proceeds to 2002 to determine whether or not the down counter 23 is “0”. S. If the pulse count end flag is set in step 2001, the process proceeds to step S. It returns to 410.
[0071]
A pulse is generated based on the running of the film by the operation of the winding lever 2, and the value of the down counter 23 gradually decreases, but the content of the down counter 23 does not immediately become "0". In step S2002, it is determined that the answer is no and the S.C. It returns to 410. S. In step 2002, when the content of the down counter 23 is "0", S.P. In step S2003, the pulse count end flag is set to "1", and 2004, and turns off the film interrupter. After performing the film locking process in 2005, S.S. After the number of film frames is counted up in step 2006, S.P. It returns to 410.
[0072]
S. 2001, S.M. S.2 of the cueing process via the route of 2002 Returning to 410 corresponds to the case where the first frame of the film is not yet positioned at the aperture. 2001-S. S. through the 2006 route Returning to 410 corresponds to the case where pulses for the number of cue pulses are counted and the first frame of the film 22 is positioned at the aperture.
[0073]
S. At 410, the CPU 8 determines whether 125 ms has elapsed. Before the elapse of 125 ms, the CPU 8 executes S.D. 407, S.P. 409, S.C. The process of step 410 is repeated, and when 125 ms elapses, the 125 ms timer is restarted (S.411), the CPU 8 captures various switch state signals (S.412), and executes operation processing corresponding to each switch state (S.412). .413), and after executing the display process (S.414), Return to 407. S. When the preliminary angle switch SW1 is turned off at S. The flow shifts to 408, where it is determined whether the winding completion switch SW3 is off or not.
[0074]
Once the winding lever 2 is wound up to the maximum angle, the shutter is charged and the winding completion switch SW3 is turned off. When the winding completion switch SW3 is originally off, it remains off.
[0075]
When the winding lever 2 returns to the stowed position, S.P. 407 is determined to be YES, and S.S. 408, it is determined whether the winding completion switch SW3 is off or not. If yes in S.408, S.S. It moves to 415. Therefore, S.I. 407-S. The route 415 corresponds to one winding of the winding lever 2.
[0076]
S. If the pulse count end flag is cleared at 415, it is determined to be no, and The program proceeds to S.416, in which a winding-in-progress flag is set. The process proceeds to 417, where the numerical value remaining in the down counter 23 is temporarily stored in the memory 24.
[0077]
Next, the CPU 8 executes S. The flow shifts to 418, where it is determined whether the flag indicating that there is one lever winding is on or not. The setting of the lever 1 winding flag to “1” means that the first winding operation has been performed since the back cover 6 was closed.
[0078]
The determination as to whether or not the winding lever 2 has been moved to the maximum angle from the storage position to the stop position (that is, the maximum operable amount of movement of the winding lever 2) is performed in S. 407, S.E. 408. 415, that is, the preliminary angle switch SW1 and the winding completion switch SW3 are both off (the winding lever 2 is once moved from the storage position to the maximum stop position, and then returned to the storage position again). In this state, the winding by the winding lever 2 is recognized as "there is one winding".
[0079]
By the way, there is a possibility that the hoisting lever 2 may be at an intermediate position in the state immediately after the back cover 6 is closed. Using the condition that the switch SW3 is off as it is, it cannot be determined that the operation is the maximum movement amount operation from the operation start position to the operation stop position of the hoisting lever 2.
[0080]
Therefore, in the embodiment of the present invention, immediately after the back cover 6 is closed, S.D. At 206, the flag indicating that the lever 1 has been turned is cleared, and the S.I. When the processing of step S. 418 is reached, S. After moving to 424 and setting the lever 1 winding flag to “1”, the CPU exits the cueing process once and operates the second winding lever 2 again to return to S.C. 418 for the first time. 419 so that the presence or absence of the film is not determined based on the number of pulses generated during the winding operation from the intermediate position of the winding lever 2 to the operation stop position.
[0081]
That is, in the embodiment of the present invention, between the time when the back cover 6 is closed and the winding lever 2 is operated twice to the operation stop position, the back cover 6 is closed and the winding lever 2 first reaches the operation stop position. The number of pulses generated in the winding operation until the winding lever 2 reaches the operation stop position for the second time is counted, and the presence or absence of the film is determined. I have.
[0082]
The CPU 8 executes S. At 419, it is determined whether or not a predetermined number or more pulses have been generated. S. If no at S.419, S.S. At 420, all the body state flags are cleared. The flow shifts to 421, where the no film flag is set to "1", and it is determined that "no film".
[0083]
In other words, in the second and subsequent winding operations, the winding operation by the winding lever 2 reliably starts from the operation start position, and the S.P. 419-S. 421 is executed to determine the presence or absence of the film. The first operation of the winding lever 2 immediately after the back cover 6 is closed is determined to be the first operation, and the first winding lever is determined. In the case of the operation of step 2, 419-S. By jumping the process 421, it is not determined whether or not the film 22 is loaded in the camera body 1, so that the detection accuracy of the loading of the film 22 is increased.
[0084]
When the film 22 is set, the content of the down counter 23 does not become "0" by one or two operations of the winding lever 2 during the cueing, so this cueing processing flow is repeated a plurality of times. When the film pulse count check process is executed during the cueing process and the content of the down counter 23 becomes "0", it is determined that the number of pulses corresponding to the number of cueing pulses has been counted, and S.P. In 2003, the pulse count end flag is set, the film interrupter is turned off, the film locking process is performed, and the number of film frames is counted up (S.2004, S.2005, S.2006).
[0085]
By the film locking process, the electromagnetic clutch gear 18 is turned off even during winding by the winding lever 2, the driving force of the winding lever 2 is cut off, and the film locking magnet Mg 2 is energized to lock the spool 20. , The position of the film 22 is fixed.
[0086]
Therefore, as shown in FIG. 13 (a), at the beginning of the cue, when the winding lever 2 is wound, a pulse is generated during the winding up to the maximum angle after the preliminary angle switch SW1 is turned on. Is performed, the winding completion switch SW3 is turned off, and when the winding lever 2 is returned to the storage position, the winding lock magnet Mg3 is energized and the winding lock is released. Next, at the end of the cueing process, when the number of pulses corresponding to the number of cueing pulses is counted as shown in FIG. 20 is locked, and the position of the film 22 is fixed.
[0087]
In addition, the S.C. At step 415, since the pulse count end flag is "1", the determination is YES, and 422, S.P. The flow shifts to 423, where all body state flags are cleared, then the wind flag is set to "1" and the process returns to the film feeding process.
[0088]
When entering the cueing process from the body state checking process, when the film is set, after the cueing process is completed, the number of frames of the film is displayed as "1", and the shutter is charged and the release is permitted. Then, the winding lever 2 is locked in the winding state.
[0089]
Returning to the main flow, S.P. 4-S. When the photometry switch is turned on during the execution of the process of S.13, as shown in FIG. 7 is determined to be Yes. The routine goes to 14, where the power hold timer is set. Next, the CPU 8 executes S. The process proceeds to S.15, where a switch state signal is fetched, and a corresponding switch operation process is performed (S.16). In step S17, the luminance information (Bv) is fetched. The process proceeds to S.18, where aperture information (AVVR) is fetched, and photometric calculation processing is performed using these information (S.19). 20. The body state check process starts.
[0090]
When the CPU 8 exits from the body state check processing, the CPU 8 next executes S.D. based on luminance information, aperture information, and the like. In step S.21, a display process is executed. Then, the flow shifts to film feed transfer check processing at 22. When the take-up lever 2 is not operated, the process immediately exits the film feed transfer check process and proceeds to S.P. Then, the process proceeds to step 23, where it is determined whether or not the release permission flag is set to "1".
[0091]
S. 23, if yes, 24, it is determined whether or not the release switch has been turned on. If the answer is YES in step S24, the release process is performed and the release permission flag is cleared. 26, and clears the pulse count end flag. 27, the count value of the power hold timer is decremented, and The process proceeds to 28 to determine whether or not the count content of the power hold timer is “0”.
[0092]
S. 28, if yes, 4 if no, S. Returning to step 15, this process is repeated. S. If no in S.23, the release is prohibited. The processing of steps S24 to S26 is skipped and S.P. 27. If NO in S.24, release processing is prohibited. 25, S.M. 26, the process jumps to S.26. 27.
[0093]
S. 23-S. Route 26 corresponds to the execution of shooting, whereby the shutter curtain is driven, the winding completion switch SW3 is turned on, and the film locking process is released.
[0094]
During the execution of the main flow, when the body state checking process of FIG. At S218, it is determined that the current winding completion switch SW3 is ON, and 219. At 219, since the previous winding completion switch SW3 has been turned off, it is determined to be YES, and the winding lock release permission flag is set.
[0095]
Next, S. 221, since the winding completion switch SW3 is on, 222, S.M. 223, and jumps to S.223. In step 224, the setting of the release permission flag is prohibited.
[0096]
And S. 224-S. After performing the processing of S.227, S.P. Then, the flow shifts to 229, where it is determined whether the winding lock release permission flag is "1" or not. S. 229, the answer is yes. 230. 230, the determination is no, and 231-S. The process at 233 is performed, and the process returns to the main flow.
[0097]
Thereby, the winding lock release process is performed, and the winding lever 2 can be wound.
(3) Wind processing
When the take-up lever 2 is operated during the execution of the main flow after the release, if the film feeding shift check process of FIG. 106, the determination is YES. The process proceeds to 107, where a film feeding process is performed.
[0098]
In this film feeding process, S.P. 305 is determined to be yes, The process shifts to 312 to execute a wind process.
[0099]
In the winding process, as shown in FIG. At 3001, the film pulse error flag is cleared, and then the film interrupter is turned on (S.3002). In 3003, it is determined whether or not the winding halfway flag is “1”. This winding-in-progress flag is set when the winding pulse number (winding lever 2) has not reached the number of wind pulses (the number of reference pulses generated by feeding one frame).
[0100]
Immediately after entering the wind processing, the CPU 8 clears the winding-in-progress flag. 3003 is determined as No, Then, the flow shifts to 3004, where the number of wind pulses is set in the down counter 23. Then, the 125 ms timer is started (S.3006), and S.3006 is started. The flow shifts to 3007, where it is determined whether the preliminary angle switch SW1 is off or not.
[0101]
Until the winding lever 2 is hoisted and returned to the storage position, S.P. 3007 is determined to be No. Move to 3009. S. In the film pulse count check process of S3009, as shown in FIG. In 2001, it is determined whether the pulse count end flag is “1”.
[0102]
At the beginning of winding, the pulse count end flag is cleared, 2001, the determination is no. The process proceeds to 2002 to determine whether or not the content of the down counter 23 is “0”. S. If the pulse count end flag is set in step 2001, the S.C. It returns to 3010.
[0103]
A pulse is generated based on the running of the film by the operation of the winding lever 2, and the value of the down counter 23 gradually decreases, but the content of the down counter 23 does not immediately become "0". In step S2002, it is determined to be No. It returns to 3010. S. In 2003, when the content of the down counter 23 is “0”, the S.P. In step S2003, the pulse count end flag is set to "1", and 2004, and turns off the film interrupter. After performing the film locking process in 2005, S.S. After counting up the number of film frames in S2006, S.D. It returns to 3010.
[0104]
S. 2001, S.M. 2002 through the route of S.2002. The return to 3010 corresponds to the middle of winding, and 2001-S. S. through the 2006 route The return to 3010 corresponds to the case where the number of wind pulses is counted from the retracted position of the winding lever 2 to the maximum angular position and one frame of film is positioned in the aperture.
[0105]
S. 3010-S. The processing of S.3014 410-S. Since the processing is substantially the same as the processing in 414, a detailed description thereof will be omitted.
[0106]
When the winding lever 2 returns to the stowed position, S.P. 3007 is determined to be Yes. The flow shifts to S3008, where it is determined whether the winding completion switch SW3 is off or not. If yes in S3008, S.S. The process moves to 3015. Therefore, S.I. 3007-S. The route 3015 corresponds to one winding after the winding lever 2 is released.
[0107]
S. If the pulse count end flag has been cleared in step 3015, it is determined as No, The flow shifts to S.3016, where a winding-in-progress flag is set. The flow shifts to 3017, where the numerical value remaining in the down counter 23 is temporarily stored in the memory 24. Then, the process returns to the film feeding process.
[0108]
S. In the pulse count check process at 3009, the content of the down counter 23 is decremented, and when the number of wind pulses is counted, S.P. In 2003, the pulse count end flag is set to "1", the film interrupter is turned off, the film locking process is executed, and the number of film frames is counted up.
[0109]
When the winding lever 2 is wound up to the maximum angle, the winding completion switch SW3 is turned off and the shutter is charged. Further, when the number of pulses equal to the number of wind pulses is counted, the film is locked.
[0110]
After the execution of the winding process, during the execution of the body state checking process shown in FIG. 221 is NO, and S. 223 is determined to be yes. At 223, a release permission flag is set, and Then, the flow shifts to 229, where it is determined whether the winding lock release permission flag is "1" or not.
[0111]
Since the winding-up lock release permission flag is set to "1", S.P. At 230, the release permission flag is set to "1", so that the return to the main flow is performed without performing the winding lock release processing, thereby preventing double winding.
[0112]
In this manner, the photographing is performed, a predetermined number of photographings are performed, and the film winding process is performed.
(4) Film winding process
If photographing is performed during the execution of the main flow and there is no remaining film 22, when the body state checking process of FIG. 210, the answer to S.210 is YES. The processing shifts to 211, where the CPU 8 determines whether or not the winding completion switch SW3 is on.
[0113]
Since the winding completion switch SW3 is turned on by the shutter running, S.S. 211 is determined to be Yes. The program proceeds to S.212 where all body state flags are cleared, and 213, and the winding flag is set to “1”. Move to 214.
[0114]
Since the release permission flag is cleared by the release processing, S.P. 230, the determination is NO. 231-S. The process of 233 is executed, and the lock of the winding lever 2 is released.
[0115]
During the execution of the main flow, the flow advances to the film feeding transition check process in FIG. At 103, it is determined to be yes, 107, and the process proceeds to S.107 in FIG. 306, and At 313, a winding process is performed.
[0116]
S. In the winding process of 313, as shown in FIG. At 4001, the film pulse error flag is cleared and the film interrupter is turned on (S.4002). In step 4003, the number of pulses used to determine whether a film still remains in the down counter 23 is set, and then a 125 ms timer is started (S.4004). The flow shifts to 4005, where it is determined whether the preliminary angle switch SW1 is off or not.
[0117]
Until the winding lever 2 is hoisted and returned to the storage position, S.P. 4005 is determined to be No, and S.400. The process moves to 4007. S. At 4007, it is determined whether or not the pulse count end flag is “1”.
[0118]
At first, since the pulse count end flag is cleared, S.P. 4007, the determination is no. The flow shifts to 4008, where it is determined whether or not the down counter 23 is "0". S. If the pulse count end flag is set in S4007, 4008-S. The processing of S.4010 is jumped to S.40. It moves to 4011. S. If the content of the down counter 23 is not "0" in S4008, S.P. 4009, S.E. Jump to S.4010 It moves to 4011. S. If the content of the down counter 23 is "0" in S4008, S.P. At step 4009, a pulse count end flag is set, the film interrupter is turned off, and It moves to 4011.
[0119]
S. 4011-S. The display processing of S.4015 is performed by S.D. 3009-S. Since it corresponds to the display processing of 3014, its description is omitted.
[0120]
When the winding is performed by operating the winding lever 2 and the preliminary angle switch SW1 is turned off, S.P. If YES is determined in step 4005 and the shutter is charged by operating the winding lever 2, the winding completion switch SW3 is turned off. 4006. The flow shifts to 4016, where it is determined whether the pulse count end flag has been set to "1".
[0121]
S. If YES in step S4016, the process returns to the film feeding process. If NO in S4016, S.P. Then, the flow shifts to 4107, where all the body state flags are cleared, the winding completion flag is set, and the process returns to the film feeding process (S.4108).
[0122]
S. The reason why the pulse count end flag is determined to be "1" at 4016 is that if the prescribed pulse count has been completed by one winding, it is considered that the film is still left, so the winding is continued. If the pulse count has not been completed, it is considered that the winding of the film has been completed, so that the idle winding process described later is executed.
[0123]
When the shutter is charged by operating the winding lever 2, the winding completion switch SW3 is turned off, and the release permission flag is cleared, the CPU 8 enters the body state check processing flow during the execution of the main processing flow. S. 231-S. At 233, a winding lock release process is performed, and the process returns to the main flow.
[0124]
Then, during the execution of the main flow, when the film feed shift check process is started, S.S. At 104, it is determined whether or not the winding completion flag is "1". If yes at S. 107, and enters a film feeding process. 307 is determined to be yes. The idle winding process of 314 is executed. Since this idle winding process has already been described, its description is omitted.
(5) Cueing when no film is set
During the execution of the main flow, the CPU 8 executes S.D. 9 is entered (see FIG. 6), and when the back cover 6 is closed, 201, the determination is no. 207, it is determined whether or not the back cover switch SW was previously opened. 207 is determined as YES, and S.S. 208, and clears all the body state flags. The program proceeds to S.209, where the cueing flag is set to "1", and The process proceeds to 210 and the subsequent processing is executed.
[0125]
S. In the processing after step 210, the cueing flag is set to "1". At 228, the release permission flag is cleared, so that the release is prohibited during the cueing process.
[0126]
During execution of the processing returning to the main flow, the CPU 8 executes S. 8, S.I. Then, the process proceeds to a film feed transfer check process (see FIG. 5) of No. 13. When the preliminary angle switch SW1 is turned on by the operation of the winding lever 2, S.P. 102 is determined to be Yes. 107, and the process proceeds to S.107 in FIG. At 303, the determination is yes, and the cueing process of S310 is performed.
[0127]
S. of the cueing process (see FIG. 9) 401-S. Since 415 has already been described, only different parts will be described. During this cueing process, the S.S. In step 409, the film count pulse check process shown in FIG. 10 is performed. However, since no film is loaded, no pulse is generated in a specified amount.
[0128]
Therefore, the content of the down counter 23 does not become “0”, and the pulse count end flag is not set to “1”. Therefore, the film locking process is not performed.
[0129]
Therefore, when the winding lever 2 returns, S.P. At 415, the determination is no, The program proceeds to S.416, in which a winding-in-progress flag is set. The process proceeds to 417, where the numerical value remaining in the down counter 23 is temporarily stored in the memory 24.
[0130]
Next, the CPU 8 executes S. The flow shifts to 418, where it is determined whether the flag indicating that one lever has been wound is set or not. When the winding operation of the winding lever 2 is performed immediately after the back cover 6 is closed, it is determined that the winding operation is the first winding, and the flag indicating that the lever 1 has been wound is cleared. 418, the determination is NO. The program proceeds to S. 424 and sets the lever 1 roll present flag. 310, the flow returns to the film feeding process. The flow shifts to 308, where the film interrupter is turned off, the flow returns to the film feed transfer check processing, and then returns to the main flow. Note that the first winding is also performed when the winding is performed from when the winding lever 2 is not at the storage position.
[0131]
When the CPU 8 enters the cueing process again during the execution of the main flow, the CPU 8 executes S.C. 401, S.M. After performing the processing of S. The flow shifts to 403, where it is determined whether the winding-in-progress flag is "1" or not. Since the winding-in-progress flag is set to “1” in the first winding, 403 is determined to be yes. In 405, the remaining numeric values stored in the memory 24 are set in the down counter 23.
[0132]
Next, the CPU 8 executes S. 406-S. If the winding lever 2 returns during the repetitive execution of the process of S 414, S.S. The processing after 415 is executed. This S. In the processing after S. 415, S.P. 418, the flag indicating that there is a single-turn lever is set. 418 is determined to be yes. The flow shifts to 419, where it is determined whether or not pulses equal to or more than the specified number have been generated.
[0133]
Since the film 22 is not set, it is impossible to generate more pulses than the specified number. 419, the determination is NO. 420, and clear all the body state flags. The flow shifts to 421, where the no film flag is set, and the process returns to the film feeding process.
[0134]
This S. 419-S. Since the cueing flag is cleared by passing through the route of 421, when the film 22 is not set, the winding up lever 2 is wound up at least twice, thereby exiting the cueing process and ready for photographing. S. 419-S. The route 421 plays a role as a film presence / absence detecting means for detecting the presence / absence of a film.
[0135]
Therefore, as shown in FIG. 14A, no pulse is generated even if the first winding operation is performed when there is no film 22, and when the winding lever 2 returns to the storage position, the winding lock release magnet Mg3 is energized. The winding lock is released. Further, as shown in FIG. 14B, no pulse is generated even in the second winding operation, so that the film locking process is not executed.
[0136]
If the release switch is turned on during execution of the processing returning to the main flow, S.P. 24, a release process is performed, and 26 and subsequent processes are performed. S. 23-S. Route 26 corresponds to the execution of photographing, whereby the shutter curtain runs and the winding complete switch SW3 is turned on.
[0137]
During the execution of the main flow, if the body state check process is started (see FIG. 6), the process proceeds to S. At S218, it is determined that the current winding completion switch SW3 is ON, and 219. At 219, since the previous winding completion switch SW3 has been turned off, it is determined to be YES, and the winding lock release permission flag is set.
[0138]
Next, S. 221, since the winding completion switch SW3 is on, 222, S.M. 223, and jumps to S.223. In step 224, the setting of the release permission flag is prohibited.
[0139]
And S. 224-S. After performing the processing of S.227, S.P. Then, the flow shifts to 229, where it is determined whether the winding lock release permission flag is "1" or not. S. 229, the answer is yes. 230. 230, the determination is no, and 231-S. The process at 233 is performed, and the process returns to the main flow. Thereby, the winding lock release process is performed, and the winding lever 2 can be wound.
[0140]
When the take-up lever 2 is operated during execution of the process after returning to the main flow, the S.C. 106 is determined to be YES, and the film feeding process of FIG. 7 is started. At 304, the determination is YES, and the idle winding process of FIG. 8 is executed.
[0141]
When the idle winding process shown in FIG. 8 is started, the operation of the film interrupter as the pulse generating means 12 is prohibited, so that power is saved. This idle winding process plays a role of inhibiting the operation of the pulse generating means 12.
[0142]
When the shutter is charged by operating the wind-up lever 2, the release permission flag is set again to enable the release. When there is no film, the back cover 6 is closed and the wind-up lever 2 is wound up at least twice. After that, release is possible.
[0143]
【The invention's effect】
According to the first to third aspects of the present invention, the presence or absence of a film can be detected by software without providing a mechanical film presence / absence detection switch exclusively.
[0144]
According to the fourth aspect of the present invention, when there is no film, the shutter can be released without performing the film locking process, so that power is saved and the usability is convenient.
[0145]
According to the fifth aspect of the invention, the operation of the pulse generating means is prohibited when there is no film, so that power can be saved.
[0146]
According to the invention described in claim 6, when the film is set, the winding lever can be wound up until the first frame of the film is positioned at the aperture in the cueing process, and the release is prohibited during that time. It is convenient to use.
[0147]
According to the invention described in claim 7, when the back cover is open, the film can be wound up in a state where the shutter release is prohibited, and the film is released without performing the release operation until the film is aligned with the positioning index. In addition, during the film winding operation, exposure due to an unintended release is prevented.
[Brief description of the drawings]
FIG. 1 is a plan view of a film winding manual camera according to the present invention.
FIG. 2 is a block diagram showing a control circuit of the film winding manual camera according to the present invention.
FIG. 3 is a partially exploded perspective view of the film winding manual camera according to the present invention.
FIG. 4 is a main flowchart of the manual film wind camera according to the present invention.
FIG. 5 is a flow chart of a film feeding transition check of the manual film wind-up camera according to the present invention.
FIG. 6 is a flowchart showing a body state check of the manual film wind-up camera according to the present invention.
FIG. 7 is a flowchart of a film feeding process of the manual film wind-up camera according to the present invention.
FIG. 8 is a flowchart of idle winding processing of the manual film winding camera according to the present invention.
FIG. 9 is a flowchart of cueing processing of the manual film wind-up camera according to the present invention.
FIG. 10 is a flowchart of a film pulse count check process of the manual film wind-up camera according to the present invention.
FIG. 11 is a flowchart of a winding process of the manual film wind-up camera according to the present invention.
FIG. 12 is a flowchart of a winding process of the film winding manual camera according to the present invention.
13A and 13B are diagrams for explaining a sequence of a cueing process in a state where a film is set, and FIG. 13A illustrates a pulse generation state based on performing a plurality of windings from a first winding; (B) shows the state of pulse generation based on the last first winding at the end of cueing.
14A and 14B are diagrams for explaining a sequence of a cueing process in a state where a film is not set, wherein FIG. 14A illustrates a state of a pulse based on the first winding, and FIG. The state of the pulse based on the first winding is shown.
[Explanation of symbols]
1. Camera body
2. Hoisting lever
6. Back cover
8 CPU
12 pulse generating means
22 ... Film
SW: back cover open / close detection means (back cover open / close detection switch)

Claims (7)

By manually operating the winding lever, a film winding manual camera capable of winding a film having no perforation,
Pulse generating means for generating a pulse according to the feeding of the film,
A back cover opening / closing detecting means for detecting opening / closing of a back cover provided to be capable of opening and closing on the camera body,
At least once after closing the back cover, the winding lever is operated to the maximum movement amount from the operation start position to the operation stop position to wind up the film, thereby counting the number of pulses generated by the pulse generating means and counting the number of pulses generated by the film. A film winding manual camera having a film presence / absence determining means for determining presence / absence. By manually operating the winding lever, a film winding manual camera capable of winding a film having no perforation,
Pulse generating means for generating a pulse according to the feeding of the film,
A back cover opening / closing detecting means for detecting opening / closing of a back cover provided to be capable of opening and closing on the camera body,
And a film state determining means for determining whether said counting the number of generated pulses based on the pulse generator film during the operation twice until operation stop position the hoist lever from closing the back cover Film winding manual camera. The film presence / absence detection means performs a count operation for a pulse generated after the winding lever is first operated to the operation stop position after closing the back cover, and performs a film presence / absence determination operation. Item 3. A manual film wind-up camera according to Item 2. 4. The film winding manual camera according to claim 1, wherein when the film presence / absence detecting means determines that there is no film, the release can be permitted without performing film locking. 4. A film winding manual camera according to claim 1, further comprising a pulse generation prohibiting means for prohibiting the operation of the pulse generating means when the film presence detecting means determines that there is no film. When the film presence / absence detecting means determines that there is a film, the film can be wound by the winding lever until the first frame of the film is positioned at the aperture, and the first frame of the film is positioned at the aperture. 4. A film winding manual camera according to claim 1, further comprising a release prohibiting means for prohibiting the release until the release. 4. The method according to claim 1, wherein when the back cover opening / closing detecting means determines that the back cover is open, the back cover can be wound by the winding lever, and a shutter release operation is prohibited. The film winding manual camera described in Crab.

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