JP2551537Y2 - Film control system for electronically controlled camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a film traveling control device for an electronically controlled camera.

(Prior art) In an electronically controlled camera, a back cover closing detection switch is provided on the back cover of the camera body, the camera back cover is opened, a film is loaded into the camera, and the back cover is closed. The main detection switch detects that the back cover is closed, and based on the detection of the back cover being closed, the main CPU automatically drives the film feed motor to feed a predetermined number of frames of film as a so-called film feed. Some are sent.

(Problems to be solved by the invention) However, there are problems that the back cover switch is troublesome to manufacture and its operation is uncertain.
If software can be used instead, it is desirable to reduce the number of switches and other components related to film running as much as possible, to improve the assembling efficiency, and to ensure the film feed operation.

(Purpose of the Invention) The present invention has been made in view of the above circumstances, and its purpose is to eliminate the back cover open / close detection switch having a complicated structure and reduce the number of parts. It is an object of the present invention to provide a film traveling control device for an electronically controlled camera, which can ensure the operation and prevent the usability as much as possible when the configuration is replaced with software as much as possible.

(Means for Solving the Problems) In order to achieve the above object, the film running control device of the electronically controlled camera according to the present invention has a main switch for turning on and off a power supply, and a main switch for turning on and off the back cover. A film presence / absence detection switch provided to detect whether or not the film is ready to be fed; a release switch for performing a release operation; and an indication of a film idle feed based on a detection output of the film presence / absence detection switch. Loading request display control means for forcibly displaying on the display means, a film feed detection switch for detecting the feeding of the film, and a standby state for idling the film based on the output of the loading request display control means, The film feed motor is driven based on the operation of the switch from off to on and the operation from on to off. Idle feed control means for causing the film to be skipped at the time when a predetermined number of frames of the film have been fed, and the idle feed control means comprising: Is on and the display means displays the film skipping, the film skipping can be executed based on the operation of the release switch, and the power supply is turned on and off of the main switch. In this case, it is turned off after the execution of the film idle feeding.

(Operation) According to the present invention, as shown in FIG. 1, when the film presence / absence detection switch provided on the peripheral wall of the opening opposite to the back cover detects that the film can be fed, the loading request is displayed. The control means forcibly displays a request display of the film skipping on the display means.

When the main switch or the release switch is operated in a state where the request for the idle film feed is displayed on the display means, the idle feed execution control means drives the film feed motor. As a result, the idle feeding of the film is performed. The film feed detection switch detects the film feed as the film empty feed. Based on the detection result of the film feed detection switch, the idle feed control means stops driving the film feed motor when a predetermined number of frames of the film are fed idle.

(Embodiment) An embodiment of a film running control device for an electronically controlled camera according to the present invention will be described below with reference to the drawings.

2 to 4 show the appearance of the electronically controlled camera according to the present invention, wherein 1 is a camera body, 2 is a zoom lens barrel, 3 is a back cover, 4 is a back cover opening / closing lever, and 5 is a back cover opening / closing lever. A finder, 6 is a liquid crystal plate as a display means, 7 is a slide main switch, 8 is a patrone room, 9 is a spool room,
Reference numeral 10 denotes a zoom lens, 11 denotes a push button switch, 12 denotes a mode display switching button, 13 denotes an edge lamp, and 14 denotes a red lamp. The back cover 3 is opened when the back cover opening / closing lever 4 is operated in the direction of arrow A (see FIG. 3). The main switch 7 has a lock position SWL, a zoom position SWZ, and a macro position SWM,
Lock position SWL to zoom position SWZ or micro position SWM
Is operated in the direction of arrow B toward the motor drive circuit 15, based on the control of the main CPU shown in FIG.
Power supplies of the strobe circuit 16, the shutter circuit 17, and the like are turned on. The liquid crystal panel 6 has a film display area 6a for displaying a film relation, a shooting mode display area 6b for displaying a shooting mode, and a battery display area 6c for displaying a state of a battery.
In the film display area 6a, an empty film feed request display Ld,
Cylindrical patrone mark indicating film loading,
The display of the number of film shots and the display of the focal length indicating the position of the zoom lens 10 are performed. The details will be described later.

The main CPU transmits and receives information to and from the sub CPU via the drive IC as shown in FIG. Sub C
The PU has a function of transmitting raw photometric information of the photometric element, raw autofocus information, and the like to the main CPU in accordance with a processing procedure, and exchanges information with the autofocus IC. The autofocus IC controls the light emission of the infrared light-emitting diode and receives the infrared reflected light from the subject.
It has a function to transmit the D light receiving output raw information to the sub CPU.

The motor drive circuit 15 has a function of driving the zoom motor 18 and the film feed motor 19. The motor drive circuit 15 is controlled by the main CPU. The control of the motor drive circuit 15 will be described based on a flowchart described later.

The mode display switch button 12 is in the normal shooting mode,
When the mode display switching button 12 is pressed, a daytime synchro shooting mode is set. When the mode display switching button 12 is pressed in this daytime synchro shooting mode, a normal shooting mode is set.
The display corresponding to this shooting mode is displayed on the liquid crystal panel 6, and its display control is performed by the main CPU. However, since this invention is not directly related, detailed description thereof is omitted. I do. Note that a normal shooting mode display is displayed in the shooting mode display area 6b shown in FIG.

The push button switch 11 is provided above the camera as shown in FIG. The push button switch 11 includes a photometric switch SWS, a release switch SWR, a tele switch SWT, and a wide switch SWW. The photometry switch SWS and the release switch SWR constitute a so-called shutter button 20. The photometry switch SWS is turned on when the shutter button 20 is half-pressed, and the release switch SWR is turned on when the shutter button 20 is fully depressed. The photometric switch S
When WS is turned on, photometric raw information is transferred from the sub CPU to the main CPU. The main CPU processes the raw information and converts it into exposure information and performs other related processing. Then, when the release switch SWR is turned on, shutter control information is transferred to the sub CPU, and shutter drive control is performed.

The tele switch SWT has a function of rotating the zoom motor 18 in the direction in which the zoom lens barrel 2 is extended, and the wide switch SWW has a function of rotating the zoom motor 18 in the direction in which the zoom lens barrel 2 is stored. The main CPU is based on the switch input of the tele switch SWT and the wide switch SWW,
A flow for rotating the zoom motor 18 forward and backward is executed. A process of switching the display state of the liquid crystal panel 6 from the display of the number of photographed films to the display of the focal length is executed together with the normal / reverse rotation of the zoom motor 18, the details of which will be described later.

A film presence / absence detection switch 22 and a film feed detection switch 23 are provided on an opening peripheral wall 21 between the patrone chamber 8 and the spool chamber 9. The film presence / absence detection switch 22 loads the patrone into the patrone chamber 8 and
When the perforation of the film is engaged with the film feed detection switch 23, the leading end of the film is mounted on the spool, and when the back cover 3 is closed, the film is buried in the opening peripheral wall 21. The film presence / absence detection switch 22 is turned off when it is buried in the peripheral wall 21 of the opening.
When 22 is off, the film is ready to be fed.

The main CPU relates to the film running control, and functions as a loading request display control means for forcibly displaying a request display Ld of the film idle feed on the liquid crystal panel 6 based on the detection output of the film presence / absence detection switch 22, and the loading request display control means. And the main switch 7 or the release switch
The film feed motor 19 is driven based on the operation of the SWR to execute the film skipping, and the film feeding is performed when the predetermined number of frames of the film skipping is executed based on the detection output of the film feed detection switch 23. And a function as an idle feed execution control unit for stopping the driving of the motor 19. Also,
The main CPU has a function as a display control means for preferentially displaying on the liquid crystal panel 6 the number of film shots as renewable information stored in the memory means for the film display and the focal length display. 6, when the number of film shots is displayed, a tele switch SWT, a wide switch SWW, or a photometric switch as a switch corresponding to other updatable information stored in another storage means.
When the SWS is operated, the function as display switching means for switching the display state to the focal length information as other information that can be updated is performed. In addition to the film feed detection switch 23, the detection output of the film presence / absence detection switch, the battery presence / absence information of the battery presence / absence switch SWB,
DX corresponding to zoom code information and film sensitivity described later
Contact information has been entered.

Hereinafter, each operation of the electronically controlled camera according to the present invention will be described based on a flowchart for explaining the operation of the main CPU.

7A and 7B show a main flow for explaining the operation of the main CPU. The main CPU normally executes the main flow. First, the main CPU, in S1, the main switch 7, film presence detection switch
22 (displayed as SWF in the flow), battery presence switch SWB, release switch SWR, photometry switch SWS, wide switch SWW, tele switch SWT, and switch data of mode display switching button 12 are stored in the memory.

Next, the flag FPOS related to the zoom code is determined (S2). The reason for making this determination will be described briefly.

The zoom code is provided by a zoom code plate and a brush provided on the zoom lens barrel 2 as is well known.
This zoom code means focal length information as other information that can be updated. This zoom code differs depending on the position of the zoom lens barrel 2 and is stored in another storage means (not shown). The electronically controlled camera of this embodiment has a zoom code plate 25 as shown in FIG. , Brushes ZC0, ZC1, ZC2, and GND, and as shown in FIG.
From 2 to POSC, a relative code in which the same code appears at least twice is adopted. This is to reduce the number of brushes as much as possible and to simplify the pattern of the zoom code plate 25.

Therefore, for example, the zoom code (ZC) 4 is POS3,
Since it appears at positions 7 and B, it is not possible to determine the position of the zoom lens 10 with this zoom code 4. Therefore, it is necessary to first determine whether or not the zoom code can be treated as valid. For this reason, the main CPU sets a flag FPOS for determining whether or not the zoom code is valid. The flag FPOS means that FPOS = 1 is valid, and FPOS =
0 means invalid. The main CPU shifts to switch data input when FPOS = 1 (S3), and when POS = 0, the POS
The process proceeds to the INI process (S4) and returns to the start of the main flow. This POS INI processing is zoom code and zoom lens 1
This POS process is for making the position of 0 correspond to the position of one-to-one.
After passing through the INI processing, FPOS = 1.

In POS 0, 1, and D, the absolute relationship with the zoom code is maintained. If each POS and each zoom code have a one-to-one correspondence, this processing is unnecessary.
The POS INI processing is omitted since the present invention can also be applied to the one having a one-to-one correspondence between the zoom code and each zoom code.

The switch data is input to the main CPU again in S3, and the process proceeds to S5. In S5, it is determined whether or not the SWB is on. Battery backup processing B when SWB is off
Shift to ACK UP (S6). SWB is ON when a battery is loaded in the camera, and OFF when the battery is not loaded. When the SWB is ON, the main CPU shifts to S7.

In S7, the loading end flag FLDEND is determined. The loading end flag FLDEND is a flag for judging whether or not the film has been fed by a skip. When FLDEND = 1, the loading is ended, and when FLDEND = 0, the loading is not ended. When FLDEND = 1, the process proceeds to S8, and when FLDEND = 0, the process proceeds to S9. In S9, the loading request flag FLDRQ is determined. The loading request flag FLDRQ is a flag for determining whether or not there is an empty film feed request. When FLDRQ = 1, it means that there is an empty film feed request, and when FLDRQ = 0, it means that there is no empty film feed request.

If FLDRQ = 1, proceed to S8. If FLDRQ = 0, proceed to S1.
Move to 0. In S8, it is determined whether or not the SWF is off.
When SWF is on, FLDEND = 0, FLDRQ = 0 (S11, S1
The process of 2) is performed, and the process proceeds to the film display process (S13). When the SWF is off, the process proceeds to S14. Similarly for S10
It is determined whether the WF is off. When the SWF is off in S10, the process of FLDRQ = 1 (S15) is performed, and the process proceeds to S13.

Now, the back cover 3 is open, FLDEND = 0, FLDRQ = 0
And In this state, No is determined in S7 and S9, and the process goes through S10. Since the main CPU loops the main flow in a normal state, the flags FLDEND = 0 and FLDRQ = 0 remain when the back cover 3 is kept open.

When the back cover 3 is closed and the film switch SWF is turned off,
In S10, the determination is YES, FLDRQ = 1 (S15), and the flow shifts to film display processing. (S13). The film display process performs the process shown in FIG. First, in S131, it is determined whether or not FLDRQ = 1. If the determination is yes, the process proceeds to the load pattern on process (S132). If the determination is no, the process proceeds to the determination process of FLDEND = 0 (S133). Back cover 3 with loading not completed and no loading display request
Is changed from open to closed, FLDRQ = 1, so S132
Is executed, the display information corresponding to the loading request is stored in the display memory XA (S134), and the loading display request Ld is displayed on the liquid crystal panel 6. Then, the process returns to the main flow and executes S14. In S14, again
It is determined whether or not FLDRQ = 1. In this case, since FLDRQ = 1 and the loading display request Ld is displayed on the liquid crystal panel 6, the flow shifts to S16. In S16, it is determined whether or not the main switch 7 has changed from the macro position SWM. The determination as to whether or not the position has changed from the macro position SWM is performed by comparing the previous macro position information stored in the macro position memory with the current macro position information. Main switch 7
When the main switch 7 is switched from the macro position SWM to the zoom position SWZ or from the macro position SWM to the lock position SWL when is in the macro position SWM, it is determined as No, and the processing shifts to the loading processing (S17). When the main switch 7 is not at the macro position SWM, since there is no change in the contents of the macro position memory, it is determined as YES, and the process shifts to S18. In S18, it is determined whether or not the main switch 7 has changed from the zoom position SWZ. The determination as to whether or not the zoom position has changed from the zoom position SWZ is performed by comparing the previous zoom position information stored in the zoom position memory with the current zoom position information. When the main switch 7 is at the zoom position SWZ, switching from the zoom position SWZ to the macro position SWM or switching from the zoom position SWZ to the lock position SWL is determined as No, and the processing shifts to loading processing (S17). When the main switch 7 is not at the zoom position SWZ (in this case, it is at the lock position SWM), it is determined as YES, and the process shifts to S19. In S19, it is determined whether or not the main switch 7 is at the lock position SWL. Here, since the main switch 7 is in the lock position SWL, it is determined to be YES and the process proceeds to S20. The process of S20 will be described later, and the loading process will be described next with reference to FIG. .

In the loading process, the wind pulse counter WPCNT is set to the count 18 in S171. This count 18 corresponds to 4.5 frames of film. Next, a wind pulse change process is performed (S173). The wind pulse change processing is performed according to the processing flow shown in FIG.

In the wind pulse changing process, the film feed motor (winding motor) 19 starts normal rotation in S1731.
Then, in S1732, the initialization flag FWPINT = 1 and the wind pulse off determination flag FWPOFF = 1 are set.
At 3, a 1.5 second timer is set and the timer is started. This 1.5 second timer is used to determine whether to rewind the film. That is, even if 1.5 seconds or more have elapsed after the winding motor has rotated forward or the wind pulse has risen, if it is determined that the wind pulse counter WPCNT is not 0 in the wind pulse determination process described later, the rewind process is performed in S1734. A return flag is set, and the normal rotation stop of the hoist motor is executed in S1750, and the process proceeds to the rewind process. Here, this is a story at the initial stage of film loading, and the film is usually fed within 1.5 seconds.
Move to In S1735, switch input processing is performed, and S1736
Move to In S1736, the presence or absence of a battery is determined.
It was taken into account that the battery could be pulled out during film feeding. In this case, in S1751, the normal rotation stop of the hoist motor is executed, and the process proceeds to the backup process. If a battery is loaded, the flow shifts to S1737. In S1737, it is determined whether or not the film switch SWF is off. When the film switch SWF is on, the processing in S1738 is executed. That is, FLDRQ = 0, FLDEND = 0,
It is assumed that a film counter Fc = 0 as one storage means.
Then, in S1752, the normal rotation stop of the hoist motor is executed, and the process returns to the start of the main flow. This takes into account that the back cover 3 may be opened during the idle feeding.

When the back cover 3 is kept closed, the film switch SWF remains off, so the flow shifts to S1739. S173
In step 9, a determination process of FWPOFF = 1 is performed. At first FWPOFF = 1
Therefore, the determination is yes, and the process proceeds to the determination process (S1740) of whether SWWP = 0. SWWP = 0 means wind pulse W
Corresponds to P low. If the wind pulse WP is not low, the flow returns to S1734, and repeats the loop of S1734, 1735, 1736, 1737, 1739, 1740 until the wind pulse WP becomes low. After that, the wind pulse WP changes from high to low. Then, YES is determined in S1740, and the flow shifts to S1741. In S1741, the process of FWPOFF = 0 is performed. Then, returning to S1734, S1734, 1735, 1736, 1737
After executing the processing of, the determination processing of S1739 is performed. This time, since FWPOFF = 0, it is determined NO in S1739, and the flow shifts to S1742. In S1742, FWPINT and SW
A determination process is performed to determine whether both the WP and the WP have changed. S1742
In S1732, FWPINT = 1 is set and SWW
Since P has changed from 1 to 0, it is determined to be Yes and S
Move to 1743. Since FWPINT = 1 in S1743, S17
The flow shifts to 44, where a process of FWPINT = 0 is performed. And S1745
Move to the processing of. In S1745, a determination process is performed to determine whether SWWP = 1. If the wind pulse WP remains low, it is determined as No, and the process shifts to S1734, where S1734, S173
The processing of 35, 1736, 1737, 1739, 1742 is performed. F in S1742
Although WPINT changes from 1 to 0, the process returns to S1734 again because SWWP is still 0. Eventually, the wind pulse WP goes from low to high. Then, FWP in S1742
Since both INT and SWWP have changed, the determination is yes, and the flow shifts to S1743. In S1743, FWPINT =
Since it is 0, the processing shifts to the processing of S1746,
The processing of PINT = 1 is executed, and the flow shifts to the processing of S1745. S
In 1745, the wind pulse goes from low to high and the SWWP
Since = 1, the determination is yes, and the blinking display processing of the film pattern in S1747 is executed. This film pattern blinking display processing is to turn on the film pattern when the wind pulse changes from low to high. As a result, the liquid crystal plate 6 is brought into a display state corresponding to the actual film advance. After the process of S1747, the wind pulse counter WPCNT-1 is executed in S1748, and the content of the wind pulse counter WPCNT becomes 17. And S17
At 49, it is determined whether or not the wind pulse counter WPCNT = 0. If the wind pulse counter WPCNT is not 0, it is determined as No, and the flow shifts to S1733, where the above-mentioned processing is repeated.

That is, in this wind pulse change processing, every time the wind pulse WP rises, the wind pulse counter WP
When the content of the CNT is decremented one by one and the wind pulse counter WPCNT becomes 0, the normal rotation of the film feed motor 19 is stopped in S1753, a flag for not performing the rewind process is set, the process returns to the loading process, and the process proceeds to S174. I do. S174
In, it is determined whether or not rewind processing is to be performed. S1
In the case of passing via 749, it is determined as No and the process moves to S175, and S17
In the case of passing through 34, the determination is yes, and the process proceeds to S177 and S178. In S177 and S178, FLDEND = 1 and FLDRQ = 0 are set, and the process proceeds to rewind processing.

In S175, the film counter Fc is set to 1 and
The processing of FLDEND = 1 and FLDRQ = 0 is executed in S180 and S181, and the flow shifts to film display processing S179. In S179,
The film display processing shown in FIG. 10 is performed. Since FLDRQ = 0, it is determined NO in S131 shown in FIG.
Shift to S133. Since FLDEND = 1, it is determined NO in S133, and the process shifts to S135. In S135, a film pattern on process is performed, and the flow shifts to S136. In S136, a film count check determination process is performed. If the content of the film counter Fc is not 0, it is determined as No, and the flow shifts to S137. When loading is completed, Fc = 1, so S1
At 36, the result is NO, and at S137, the content 1 of the film counter Fc is stored in the display memory XA, and the liquid crystal panel 6 displays the number of film shots. Then, the process returns to the main flow start.

Here, during the loading execution, the film feeding is stopped, and when 1.5 seconds or more have elapsed, the rewind processing shown in FIG. 13 is executed.

First, in step S1781, the hoist motor 19 starts reverse rotation, and the flow shifts to step S1782. In S1782, it is determined whether or not the film presence / absence detection switch SWF is off. This detects the stop of the hoist motor 19. When the SWF is on, the flow shifts to S1783, where the reverse rotation of the hoist motor 19 is stopped, and Fc = 0, FLDRQ = 0, FLDEND =
0, patrone display off processing and film pattern off processing are executed, and the process returns to the start of the main flow. here,
When FLDRQ = 0 and FLDEND = 0, when the film display processing is performed via the main flow, FLDRQ = 0, FLDEND
Since = 0, it is determined NO in S131 and YES in S133, the film pattern off process is executed in S138, and in S139, information corresponding to the film pattern off is stored in the display memory XA. The film display area 6a is blank.

If the SWF is off, the flow shifts to S1789. In S1789,
Perform wind pulse detection processing. This is to detect that the wind pulse has changed from low to high.
Then, in S1788, the blinking display of the film pattern is executed. This blinking display of the film pattern turns off the film pattern when the wind pulse changes from low to high. Next, in S1790, it is determined whether or not the count number at which the wind pulse has changed from low to high is “4”. Here, the count content "4" corresponds to one frame of the film. Now, it is determined NO in S1790, and by looping S1782, 1788, 1789, and 1790, a display corresponding to the film rewind is displayed on the liquid crystal plate 6. If it is determined in S1790 that one frame of film has been rewound, the determination is YES, and the flow shifts to S1785. In S1785, the content of the film count memory Fc is subtracted one by one, and
In 787, a film display process is performed, and the flow shifts to S1782. Then, in S1782, the film presence / absence detection switch S
S1788, 1789, 1790 or S17 until WF is turned on
Loop through 85 and 1787. Note that this rewind processing
Since it is not directly related to the present invention, the description is simplified.

In S20, a process of determining whether POS = 0 is performed. SOS = 0
Corresponds to a state in which the zoom lens barrel 2 is stored in the camera body. In a state where the zoom lens barrel 2 is in the macro position protruding from the camera body 1, the main switch 7 is moved from the zoom position SWZ to the lock position. If the switch SWL is operated, it is determined to be no, and the zoom motor 18 is driven to rotate in reverse in S21, the zoom lens barrel 2 is stored in the camera body 1, and the process returns to the start of the main flow. And again S20
Is determined, this time, since POS = 0, the determination is yes, and the process proceeds to the lock process of S22.

 Next, the lock processing will be described with reference to FIG.

In the lock process, first, in S221, a port initialization process for saving power and a mode initialization process for initializing a film shooting mode are performed. Next, in S222, a process of turning off the mode display and the battery display of the liquid crystal panel 6 is performed, and in S223, it is determined whether or not FLDRQ = 1. If yes, the flow shifts to S224 and shifts to film display processing. Therefore, when there is a loading request, the main switch 7 is moved to the lock position SWL.
Ld is displayed even if there is. When FLDRQ = 0, S
At 225, it is determined whether FLDEND = 1. Immediately after the loading is completed, FLDEND = 1, so that the film display processing is performed in S224, and the number 1 of film shots remains displayed. If there is no loading request and there is no loading end, the process proceeds to S226, and the power supply voltage of the liquid crystal panel 6 is turned off to save power. Therefore, when the main switch 7 is at the lock position SWL and no film is loaded, nothing is displayed on the liquid crystal plate 6.

After the processing of S224 or S226, the main CPU determines in S227 that the main switch 7, the film presence / absence detection switch SW
F, the battery presence switch SWB is input, and it is determined whether or not the contents of the memory of each switch have changed (S228). If there is no change in the contents of the memory, the flow shifts to S229 and S230, and loops S227 to S230 at intervals of 125 ms. If there is a change in the contents of the memory, it is determined as YES in S228, and the process proceeds to S231, where the power supply voltage of the liquid crystal panel 6 is turned on.
, The main switch 7, the film presence detection switch SWF, and the battery presence switch SWB are input again. Then, in S233, it is determined whether or not the SWB is ON. If NO, the process proceeds to the backup processing flow (S234) and returns to the start of the main flow.

If the battery is loaded, the result is YES, so the flow shifts to S235, and the main switch 7 is switched to the lock position SWL.
The main switch 7 is in the lock position.
When switching from SWL to zoom position SWZ or lock position SWL to macro position SWM, it is determined as No and S
At 237, a normal shooting mode display process is performed. Then S
At 238, it is determined whether FLDRQ = 1. FLDRQ = 1
In this case, the loading process shown in FIG. 11 is performed. FLDR
When Q = 0, the process returns to the start of the main flow without performing the loading process.

In S235, when the main switch 7 remains at the lock position SWL, it is determined as YES, and the process shifts to S239.
In S239, it is determined whether FLDEND = 1. In the case of Jesus
Move to S240. If no, the process moves to S239 '. S23
At 9 ', it is determined whether or not FLDRQ = 1. In the case of Jesus
The flow shifts to S240, and if no, the flow shifts to S240 '. S24
At 0 'and 240, it is determined whether or not the film presence detection switch SWF is turned off. If the film presence / absence detection switch SWF is off in S240 ', the flow shifts to S240a, where the processing of FLDRQ = 1 is performed, and then the flow shifts to the film display processing S240d. S
If it is determined NO at 240 'and YES at S240, the process proceeds to S241. If NO is determined in S240, S240b, S24
At 0C, the process of FLDEND = 0 and FLDRQ = 0 is performed, and the flow shifts to S240d. After performing the film display process at S240, the flow shifts to S241. In S241, a determination process of FLDRQ = 1 is performed. If yes, store SWF information in memory (S24
2). If NO, it is determined in S243 whether FLDEND = 1. If yes, the SWF information is similarly stored in the memory (S242). When the result is NO, the process of turning off the power supply voltage of the liquid crystal panel 6 (S244) is performed, and the process of S242 is executed. After executing the process of S242, the process returns to S229.

If it is determined NO in S19, it is determined in S23 whether the main switch 7 is at the macro position SWM. If yes, go to S24, if no, S
Move to 25. In S24, POS = EH is determined, and S2
In 5, the determination of POS ≧ 2 is performed. POS = EH corresponds to the macro position (most protruding position) of the zoom lens barrel 2. When the main switch 7 is at the macro position SWM and the zoom lens barrel 2 is not at the macro position, the zoom lens barrel 2 is moved to the macro position ( In order to move the zoom motor 18 to the maximum protruding position (S26), the focal length display maintenance counter SCANT is set to SCANT = 8 in S26. Then, in S27, a process of rotating the zoom motor 18 forward is performed, and the process returns to the main flow start. In S24, POS =
In the case of EH, the process proceeds to S60, which will be described later.

POS = 2 means that the zoom lens barrel 2 is on the wide end side (minimum protruding position side). If POS ≧ 2, the determination is yes, and the flow shifts to S28, where POS ≦ CH is determined. POS = C
H means that the zoom lens barrel 2 is on the telephoto end side (the side of the zoom region at the maximum projecting position). When POS> CH, SCANT = 8 is set in S29, the process in S21 is performed, and the process proceeds to S21.
The zoom motor 18 is reversed. If POS ≦ CH, the flow shifts to S30, where it is determined whether the wide switch SWW is on.

When the wide switch SWW is on, the process proceeds to S31,
Display focal length, set SCANT = 8 in S32,
Move to S33. In S33, the flag FWIDE =
It is determined whether it is 0. When FWIDE = 0, the judgment is YES because the zoom lens barrel 2 is not at the wide end, and S34 is determined.
Then, the wide processing is performed, and the flow returns to the main flow start. When FWIDE = 1, the process proceeds to S60. In S60, the switch data is stored in the memory, and after 125 ms, the process loops to S2.

In S30, when the wide switch SWW is not turned on, the process proceeds to S35. If yes, proceed to S36, display the focal length, and in S37, SCANT = 8
Is performed. Then, in S38, it is determined whether or not POS = CH. When POS = CH, the process proceeds to S60 and S61. PO
If S = CH is not satisfied, the flow shifts to S39, performs tele processing, and returns to the start of the main flow.

If the tele switch SWT has not been turned on, the flow shifts to S40, where it is determined whether SCANT = 0. If SCANT = 0, it is determined as YES, and the flow shifts to S44, where it is determined whether FLDQR = 1. If SCANT is not 0, it is determined as No, and the process shifts to S41 to decrement the count of SCANT. Therefore, when the tele switch SWT and the wide switch SWW are operated, the focal length display is maintained on the liquid crystal plate 6. Then, in S42, it is determined again whether SCANT = 0. S4
In step 2, when the count content of SCANT is 0, it is determined as YES, and in step S43, a film display process is executed.
Thereby, the display of the focal length displayed on the liquid crystal plate 6 is switched to the display of the film. Therefore, the focal length display counter SCANT functions as display maintaining means for displaying the other updatable information stored in the other storage means on the display means for a predetermined time. After the display is made, a loading display request as a film display or the number of film shots is displayed. And
Move to S44.

If YES in S44, it is determined whether the contents of the memory of the release switch SWR have changed in S45. In S45, when there is no change in the contents of the memory, the determination is YES, and the process proceeds to S60 and S61. When there is a change in the contents of the memory in S45, it is determined as No, and the process proceeds to S46, where it is determined whether or not the release switch SWR is turned on. If yes, the loading process of S17 is executed. Therefore, when the release switch SWR is turned on when the main switch 7 is not at the lock position and there is a loading request display, loading is performed. In this case, the focal length is not displayed for the reason described above, and the number of film shots "1" is displayed.

In S44, when no, the photometric switch in S47
It is determined whether the contents of the memory of the SWS have changed. If the content of the memory has not changed in S47, the determination is YES, and the process proceeds to S60 and S61. When the content of the memory has changed, it is determined as No, and in S48, it is determined whether or not the photometry switch SWS is on. In S48, the photometric switch SWS
If is not turned on, it is determined as No, and S60, S61
Move to

If the photometric switch SWS is on, the flow shifts to S49 ', where a focal length display process is performed. In S49, the count value of SCANT is set to 1, and the flow shifts to S50. In S50
Performs EV calculation processing. Then, in S51, it is determined again whether the photometric switch SWS is on. This is because the photometric switch SWS may be released by pressing the photometric switch SWS and then releasing the hand. When the photometry is released after the photometry switch SWS is pressed, the determination is no and the process returns to the start of the main flow. If the photometering switch SWS is kept pressed in S51, it is determined as YES.In S52, it is determined whether or not the battery presence / absence detection switch SWB is ON.If the battery presence / absence detection switch SWB is OFF, the process proceeds to the backup process. If it is on, it is determined in step S53 whether or not the release switch SWR is on.

In S53, when the release switch SWR is off, it is determined as No, and the process shifts to S55 to determine whether or not the main switch 7 is at the lock position SWL. When the main switch 7 is set to the lock position SWL after the photometry switch SWS is turned on, the determination is yes, and the process returns to the start of the main flow. If the main switch 7 is not operated in S55, the process returns to S51, and loops from S51 to S55. That is, if the photometric switch SWS is kept pressed, the release switch S
Until WR is turned on, the loop of S51 to S55 is repeated.

Here, in S53, when the release switch S53 is turned on, the flow shifts to S56, exposure control processing is executed, the shutter circuit is driven, shooting is performed, and the flow shifts to S57, where the wind shown in FIG. The processing is executed.

In the wind process, first, in S571, the wind pulse counter WPCNT is set to 4 (WPCNT = 4). Here, the count content 4 corresponds to one frame of the film. And S5
At 72, it is determined whether FLDEND = 1. FLDEND = 0
In this case, since the loading has not been completed, it is determined to be no, and the process returns to the start of the main flow. If FLDEND = 1, the determination is YES, and the film display processing shown in FIG. 10 is executed in S573, the number of film shots before winding is displayed, and the flow shifts to S574. In S574, a wind pulse change process shown in FIG. 11 is executed. In this wind pulse change processing, the wind pulse counter WPCN
Since T = 4, the count number is 4, and the process exits the wind pulse change process. Then, in S575, it is determined whether or not to rewind, and when rewinding,
The process proceeds to the rewind process, and if no rewind process is performed, the process proceeds to S575 and “1” is added to the film counter Fc. Then, the process returns to the start of the main flow. As a result, the number of film shots “2” is displayed on the liquid crystal plate 6.

Since the backup processing is not directly related to the present invention, a detailed description thereof will be omitted. Note that the contents of FLDEND and FLDRQ may change after the backup process.

(Effects of the Invention) Since the present invention is configured as described above, the number of parts can be reduced as much as possible, the effect of distinguishing between a film unloaded state and a loading standby state, and a main switch turned off. When the main switch is turned on, the film is immediately fed when the main switch is turned on.If the film is changed while the main power is turned on, the main power is turned off or the release switch is turned on. When the main switch is turned off immediately after the film is changed and the back cover is closed, the film is fed when the main switch is turned off. Even in the case of various usage modes, there is an effect that the usability is minimized.

Also, since the loading standby state is intentionally set, in addition to the above-mentioned effects, a secondary effect that the film can be replaced immediately even if a different film than intended is loaded. When the main switch is turned off immediately after the lid is closed, the film is fed by this operation, so that when the main power supply is turned on next time, there is an additional effect that the shooting operation is immediately started.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to claims of a travel control device of an electronically controlled camera according to the present invention, FIG. 2 is a plan view showing a schematic configuration of the electronically controlled camera according to the present invention, and FIG. FIG. 4 is a rear view showing the schematic configuration of the control camera, FIG. 4 is a rear view of the electronic control camera without the back cover shown in FIG. 3, and FIG. 5 is an electronic circuit of the electronic control camera according to the present invention. FIG. 6 is an enlarged plan view of the liquid crystal panel shown in FIG. 2, FIG. 7A and FIG. 7B are main flow diagrams of the electronically controlled camera according to the present invention, FIG. FIG. 9 is a development view of the zoom code plate according to the present invention, FIG. 9 is an explanatory diagram for explaining the relationship between the focal length display and the zoom code, FIG. 10 is a flowchart of the film display process, and FIG. 11 is a loading process. FIG. 12 shows a wind pulse change process. Flow diagram, Fig. 13 flowchart of rewind processes, Fig. 14 flowchart of locking, Figure 15 a flow diagram of a winding process, a. 6 Liquid crystal panel (display means) 7 Main switch 19 Film feed motor (winding motor) 22 Film presence detection switch SWF SWR Release switch SWT Tele switch SWW Wide switch Fc … Film counter (one storage means)

Continuing on the front page (72) Inventor Norio Numako 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (72) Katsutoshi Nagai 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (56) References JP-A-59-149335 (JP, A) JP-A-59-228232 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A main switch for turning on / off a power supply, a film presence / absence detection switch provided on an opening peripheral wall opposed to a back cover for detecting whether or not a film can be fed, and a release operation. A release switch for performing the operation; a loading request display control unit for forcibly displaying an indication of the idle film feed on the display unit based on the detection output of the film presence / absence detection switch; and a film feed detection switch for detecting the feed of the film. A standby state in which the film is idle-fed based on the output of the loading request display control means, and drives the film feed motor based on the operation of the main switch from off to on and the operation from on to off, and Executes the film skip feed, and stops the film skip feed when the predetermined number of frames of the film are skipped. And a feed execution control means. The idle feed execution control means, when the main switch is on and the display means displays a film idle feed, performs the film idle feed based on the operation of the release switch. A film traveling control device for an electronically controlled camera, wherein the film traveling control device is executable, and the power supply is turned off after execution of the idle film feeding when the main switch is operated from on to off.