JP2003195405A - Display illuminator for camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To illuminate a display means even when an actuator of a camera is in an activated state. <P>SOLUTION: A display means of the camera, an illuminating means to illuminate this display means and an action control means to control the action of the camera by driving the actuator are included. While the actuator is being driven, judgment of whether or not the illuminating means is in the activated state or not is made and the power consumption by the actuator is changed over and controlled so that the power consumption by the actuator is lower when activated than when not activated. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display illuminating device for illuminating a display device for displaying photographing information of a camera.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display device of low power consumption has been widely used as an information display means of a camera. This liquid crystal display device is a display that utilizes reflection or refraction of light, and unlike a display using a light emitting element or the like, it is difficult to visually recognize it in a dark place.

Therefore, in recent years, many devices are provided with a display illumination device such as an EL (electroluminescence) element or an LED (light emitting diode). Since these display illuminators consume a large amount of power, it is desirable that the display illuminators should not be used when illumination is not necessary, considering the extension of the life of the power supply. Therefore, for example, Japanese Patent Application Laid-Open No. 11-223869 discloses a technique of automatically turning on the display illumination device at a predetermined time after the end of the specified operation by operating the operating means of the camera.

However, the above-mentioned Japanese Patent Laid-Open No. 11-22
In Japanese Patent No. 3869, since the lighting is automatically turned on, the lighting is performed for a certain period of time regardless of whether the user is watching the display.
When the lighting is originally unnecessary, power is wasted for the lighting, and because the lighting is automatic, the lighting cannot be freely turned on when the user wants to see the display. for that reason,
If the user can freely turn on the lighting, the display lighting device consumes a lot of power, so if the lighting is turned on during heavy load operation such as film feeding or lens barrel driving,
Each operation and lighting may become unstable due to power fluctuation. Therefore, the publication discloses a technique for automatically turning off the illumination during heavy load operation.

[0005]

However, in the above-mentioned Japanese Laid-Open Patent Publication No. 11-223869, the illumination is automatically turned off during heavy load operation. The rewinding time may take 30 to 60 seconds, and even if an attempt is made to turn on the light during that time, the light is automatically turned off and does not turn on. Therefore, the display remains difficult to see until the rewinding is completed. Also, when zooming to match the shooting lens to the desired focal length, it is not possible to zoom with the illumination on, so in that case, stop the zoom and turn on the illumination to set the desired focal length. If it doesn't match, you have to re-zoom again, which is annoying.

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a camera provided with a display illumination device, in which the user can turn on the illumination freely regardless of the operating state of the camera. To aim.

[0007]

In order to achieve the above-mentioned object, the invention of claim 1 has a display means for displaying information of a camera, an illumination means for illuminating the display means, and a predetermined camera. An operation control means for controlling power consumption in a control circuit for controlling an operation, wherein the operation control means, during the driving of the control circuit, consumes the driving power in the control circuit when the lighting means is turned on. It is characterized in that it is controlled to a value lower than the consumed drive power.

According to a second aspect of the present invention, the illuminating means is turned on in response to an operation of the operating member, and the operation control means is operable when the illuminating means shifts from a non-lighting state to a lighting state while a control circuit is being driven. It is characterized in that the driving power consumption is shifted to a low value.

According to a third aspect of the invention, the operation control means comprises:
It is characterized in that the consumed drive power is changed from a low value to a high value when the lighting means changes from a lighting state to a light-off state during driving.

According to a fourth aspect of the invention, the illuminating means is turned on for a predetermined time in accordance with the operation of the operating member.

According to a fifth aspect of the invention, the predetermined operation is a strobe charging operation.

According to a sixth aspect of the present invention, the predetermined operation is an operation for controlling recording of a captured image in a data rewritable nonvolatile memory.

According to a seventh aspect of the present invention, display means for displaying information of the camera, illumination means for illuminating the display means, operation control means for controlling a predetermined operation of the camera by driving an actuator, The operation control means controls the driving power consumption of the actuator when the lighting means is turned on to a value lower than the driving power consumption when the lighting means is turned off while the actuator is being driven.

According to an eighth aspect of the invention, the illuminating means is turned on in response to an operation of an operating member, and the operation control means is arranged to perform the operation when the illuminating means shifts from a non-lighting state to a lighting state while an actuator is being driven. It is characterized in that the driving power consumption is controlled to a low value.

According to a ninth aspect of the present invention, the operation control means comprises:
It is characterized in that the driving power consumption is controlled to shift from a low value to a high value when the lighting means shifts from a lighting state to a light-off state while the actuator is being driven.

According to a tenth aspect of the present invention, the illuminating means is turned on for a predetermined time in accordance with the operation of the operating member.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an APS camera showing the concept of the first embodiment of the present invention.

Reference numeral 1 is a C for controlling various operations of the camera.
PU, 2 are control timers provided in the CPU 1, and 3 is an EEPROM for storing various control data.

Reference numeral 4 denotes an MA for turning on / off the power of the camera.
IN SW (main switch), 5 is SW1 (switch 1) which is turned on by the first operation of the release button to start operations such as AE and AF which will be described later, and 6 is the second release button.
SW2 (switch 2) which is turned on by an operation to start operations such as focus and shutter described later, 7 is a TELE SW (tele switch) for zooming the taking lens barrel to the long focal length side, and 8 is the taking lens barrel WIDE SW (wide switch) for zooming to the short focal length side, 9 is an MR SW for rewinding the film fed to the camera halfway, 1
Reference numeral 0 is an EL SW (EL switch) for turning ON / OFF the EL described later.

Reference numeral 11 denotes an AE sensor for measuring the exposure of a subject, 12 denotes an AE drive circuit for driving the AE sensor 11, 1
Reference numeral 3 is an AF sensor for measuring the distance to the subject, and 14 is an AF drive circuit for driving the AF sensor 13.

Reference numeral 15 is a shutter for exposing a subject image on a film, 16 is a shutter blade position detection circuit for measuring the shutter opening / closing time by detecting the blade position of the shutter 15, and 17 is based on the photometric result of the AE sensor 11. The shutter drive circuit drives the shutter 15 for the shutter open / close time determined by the CPU 1.

Reference numeral 18 is a lens barrel motor for driving the taking lens barrel, and 19 is Z for detecting the ZOOM position of the taking lens barrel.
OOM position detection circuit, 20 is the FOCU of the taking lens barrel
FOCUS position detection circuit for detecting S position, 21 is TE
Based on the signals of LE SW7 and WIDE SW8, when the lens barrel motor 18 is driven so as to zoom the taking lens barrel to a predetermined ZOOM position, or when SW2 and SW6 are turned on, the distance measurement result of the AF sensor 13 is displayed. Based on this, the lens barrel drive circuit drives the lens barrel motor 18 so as to focus the taking lens barrel on a predetermined FOCUS position.

Reference numeral 22 is a feeding motor for feeding the film, 23 is a film position detecting circuit for detecting the film position, and 24 is a data disk provided in the cartridge. Is located according to the usage status of the cartridge. (Hereinafter,
DD detection circuit for detecting (hereinafter referred to as DD), 25 is AL, W
A film feeding drive circuit for driving the feeding motor 22 according to IND, REWIND, etc., 26 is a magnetic head, 27
Records IX information on the film at the time of WIND, MR
The IX drive circuit drives the magnetic head 26 so as to read the IX information recorded on the film at the time of C.

Reference numeral 28 is an EL for illuminating the LCD described later, and 2
Reference numeral 9 is an EL drive circuit for turning on / off the EL 28 based on a signal from the EL SW 10, and 30 is an LCD for displaying photographing information of the camera and the like.

Next, the operation sequence of the camera of the first embodiment of the present invention will be described with reference to the flow charts shown in FIGS. FIG. 2 is a flowchart showing a basic series of operation processing of the APS camera shown in FIG.

At step S1, MAIN SW4 O
The N / OFF state is determined. Here, if it is in the ON state, the process proceeds to step S2, and if it is in the OFF state, this sequence ends.

In step S2, it is determined whether a cart cover (not shown) is opened and a cartridge is loaded.
Here, if the cartridge is loaded, the process proceeds to step S3, and if not loaded, the process stands by until it is loaded.

In step S3, DEP is performed to determine the usage status of the loaded cartridge, and then step S3 is performed.
Go to 4.

In step S4, the DEP determination result is UN.
It is determined whether or not it is EXPOSED (unused).
If it is UNEXPOSED, the process proceeds to step S5, and if it is not UNEXPOSED, the process proceeds to step S24.

In step S5, the fact that the cartridge is in the UNEXPOSED state is stored in the EEPROM 3, and the process proceeds to step S6.

In step S6, since the film of the loaded cartridge is set in the first frame, AL (auto loading) is performed and the process proceeds to step S7.

In step S7, the operation of each operation SW of the camera is awaited. Normally, which SW is operated depends on the user, but here, the description will be given assuming that the SW is operated in the following steps.

In step S8, it is determined whether or not the MR SW8 is turned on. If it is not turned on, the process proceeds to step S9, and if it is turned on, the process proceeds to step S21.

In step S9, it is determined whether the TELE SW7 or WIDE SW8 is turned on. If either SW is turned on, the process proceeds to step S10, and if not, the process proceeds to step S11.

In step S10, the SW in step S9
ZOOM is performed according to the operation status, and step S11 is performed.
Move to.

In step S11, it is determined whether or not the release button has been operated and the SW1 and SW5 have been turned on. Here, if it is turned on, the process proceeds to step S12, and if it is not turned on, the process proceeds to step S7 and waits for each operation SW to be operated again.

In step S12, the AE drive circuit 12 drives the AE sensor 11 to measure the exposure of the subject.
Further, the AF drive circuit 14 drives the AF sensor 13 to measure the distance to the subject, and the process proceeds to step S13.

In step S13, the release button is continuously operated from step S11, and it is determined whether SW2 and 6 are turned on or SW1 and 5 are turned off while SW1 and 5 are kept on. Here, if the SW2 and SW6 are turned on, the process proceeds to step S14, and if the SW1 and SW5 are turned off, the process proceeds to step S7 and waits for each operation SW to be operated again.

In step S14, the lens barrel extension amount (so-called FOCUS) is performed by the amount of the lens barrel extension amount calculated by the CPU 1 according to the distance measurement result in step S12.
Go to 5.

In step S15, the shutter blade position detecting circuit 16 is operated to move the shutter 15 for the shutter opening / closing time calculated by the CPU 1 according to the photometric result of step S12.
In step S16, the shutter drive circuit 17 drives (exposure) while measuring the opening / closing time, and the process proceeds to step S16.

In step S16, in order to return the lens barrel to the initial position, the lens barrel is retracted and the process proceeds to step S17.

In step S17, the filmed frame of the film is fed and set as the next unframed frame.
Is performed and the process proceeds to step S18.

In step S18, it is EEP that the cartridge is in the PARTIAL (in use) state.
It is stored in the ROM 3 and the process proceeds to step S19.

In step S19, it is determined whether or not the frames set by WIND have not been photographed, that is, all frames have been photographed. Here, if all frames have been photographed, the process proceeds to step S20, and if all frames have not been photographed, the process proceeds to step S7 and waits for each operation SW to be operated again.

In step S20, it is EEP that the usage status of the cartridge is EXPOSED (used).
It is stored in the ROM 3 and the process proceeds to step S21.

In step S21, all frames have been photographed in step S19 or MR SW8ON in step S8 is received, and REWIND is performed to wind the film into the cartridge, and the process proceeds to step S22.

In step S22, the cartridge usage status is displayed in accordance with the usage status of the cartridge stored in the EEPROM 3. Therefore, VEI setting is performed and the process proceeds to step S23.

In step S23, it is determined whether or not the cartridge lid (not shown) is opened and the cartridge is taken out. Here, if the cartridge is taken out, the process proceeds to step S1, and if not taken out, the process stands by until it is taken out.

In step S24, the DEP determination result is P
It is determined whether or not it is ARTIAL. Where PA
If it is RTIAL, the process proceeds to step S25, and PART
If it is not IAL, the process proceeds to step S28.

In step S25, the fact that the cartridge is in the PARTIAL usage state is stored in the EEPROM 3, and the process proceeds to step S26.

In step S26, as in step S6, the film of the loaded cartridge is set in the first frame, so AL is performed and the process proceeds to step S27.

In step S27, P in step S24
Operation MRC for skipping already shot frames and setting them as unshot frames in response to the judgment of ARTIAL
Is performed and the process proceeds to step S7.

In step S28, the DEP determination result is E.
It is determined whether or not it is XPOSED. Where EX
If POSED, the process proceeds to step S29 and EXPO
If not SED, the process proceeds to step S30.

In step S29, the fact that the cartridge is in the EXPOSED state is stored in the EEPROM 3, and the process proceeds to step S22.

In step S30, it is determined that the cartridge is in the PROCESSED state (developed).
It is stored in the EPROM 3 and the process proceeds to step S22.

FIG. 3 is a flow chart showing the EL control processing of the camera.

In step S31, it is determined whether or not the EL SW10 has been operated and turned on. If it is turned on, the process proceeds to step S32, and if it is not turned on, the process proceeds to step S35.

In step S32, the EL SW10 is turned off.
Upon receiving N, the EL drive circuit 29 turns on the EL 28 and the process proceeds to step S33.

In step S33, the control timer 2 starts measuring the EL lighting time, and the process proceeds to step S34.

In step S34, it is determined whether or not the EL lighting time stored and set in the EEPROM 3 has elapsed. Here, if the predetermined time has passed, the process proceeds to step S35, and if the predetermined time has not passed, the measurement is continued until the time passes.

In step S35, the EL drive circuit 29 receives the light from the EL 28 for a predetermined time and the EL 28 is turned on.
Turn off.

In this way, the EL 28 is the EL SW1
When 0 is turned on, it is turned on for a predetermined time and then turned off. Further, the EL SW10 is provided so as to be always accepted regardless of whether the MAIN SW4 is ON or OFF, and the E SW 10 is set to E even during each operation process in the flowchart of FIG.
L28 can be turned on.

Therefore, the details of each operation process for driving the feeding motor 22 in the flow chart of FIG. 1 will be described based on the difference depending on whether the EL 28 is turned on or off. 4 is shown in FIG.
3 is a flowchart showing a DEP control process in FIG.

In step S41, in response to the loading of the cartridge in step S2, the DD detection circuit 24
Thus, the detection of DD is started, and the process proceeds to step S42.

In step S42, it is determined whether or not the EL 28 is lit. Here, if it is on, the process proceeds to step S44, and if it is off, the process proceeds to step S43.

In step S43, since the EL 28 is turned off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to be fully energized with the power source voltage unchanged, and is rotated in the REWIND direction. The process moves to S45. By this operation, the DD rotates, the barcode is read by a photocoupler, etc., and the usage state of the cartridge is determined.

In step S44, since the EL 28 is lit and power is being supplied, the DUTY energization control in which the film feeding drive circuit 25 lowers the power supply voltage to the feeding motor 22 to a low voltage equivalent to the power supply voltage can be performed. Done, REWI
After rotating in the ND direction, the process proceeds to step S45.

In step S45, it is determined whether the DEP determination is completed. Here, if it is completed, the process proceeds to step S46, and if not completed, step S42.
And the control of the feed motor 22 according to the turning on / off of the EL 28 is continued until the end.

In step S46, the film feeding drive circuit 25 stops the feeding motor 22 and the step S4 is performed.
Move to 7.

In step S47, the DD detection circuit 24 ends the DD detection.

In this way, the EL 28 can be turned on even during the DEP control process by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28.

FIG. 5 is a flow chart showing the AL control process in FIG.

In step S51, in response to the determination that the cartridge loaded in step S4 is UNEXPOSED, the film position detection circuit 23 starts film position detection, and the process proceeds to step S52.

In step S52, it is determined whether or not the EL 28 is lit. Here, if it is on, the process proceeds to step S54, and if it is off, the process proceeds to step S53.

In step S53, since the EL 28 is off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to be fully energized with the power source voltage unchanged, and rotates in the WIND direction. The process moves to S55.

In step S54, since the EL 28 is lit and power is being supplied, the film feeding drive circuit 25 controls the DUTY energization by lowering the power supply voltage to the feeding motor 22 to a low voltage equivalent to that. Done, wind
The direction is rotated and the process proceeds to step S55.

In step S55, it is determined whether or not the first frame of the film has been set. Here, if the first frame is set, the process proceeds to step S56, and if the first frame is not set, the process proceeds to step S52, and the feeding motor 22 according to lighting / extinction of the EL 28 is set until the first frame is set.
Continue control.

In step S56, the film feeding drive circuit 25 stops the feeding motor 22 and the step S5 is performed.
Move to 7.

In step S57, the film position detection by the film position detection circuit 23 is completed.

In this way, the EL 28 can be turned on even during the AL control process by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28.

FIG. 6 is a flow chart showing the MRC control process in FIG.

In step S61, in response to the determination that the cartridge loaded in step S24 is PARTIAL, the IX drive circuit 27 drives the magnetic head 26 to detect the unphotographed frame, and the IX recorded on the film is recorded. The reading of information (magnetic information described in each frame that has been photographed) is started, and the process proceeds to step S62.

In step S62, the film position detection circuit 23 starts the film position detection, and step S6 is started.
Move to 3.

In step S63, it is determined whether or not the EL 28 is lit. Here, if it is on, the process proceeds to step S65, and if it is off, the process proceeds to step S64.

In step S64, since the EL 28 is off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to be fully energized with the power source voltage unchanged, and rotates in the WIND direction. The process proceeds to S66.

In step S65, since the EL 28 is lit and power is being supplied, the film feeding drive circuit 25 controls the DUTY energization control in which the power supply voltage is lowered to the feeding motor 22 to a low voltage. Done, wind
The direction is rotated and the process proceeds to step S66.

In step S66, it is determined whether or not the IX information is recorded on a frame of the film. If the IX information is not recorded here, step S67.
If it is recorded, the process proceeds to step S63,
The EL 28 lights up until an unrecorded frame is found /
The control of the feeding motor 22 according to the turning off is continued.

In step S67, the drive of the magnetic head 26 is stopped by the IX drive circuit 27, the reading of the IX information is completed, and the process proceeds to step S68.

In step S68, the film feeding drive circuit 25 performs the DUTY energization control in which the power supply voltage is lowered to the feeding motor 22 to a low voltage equivalent to the drive voltage, and REWIN is set.
Reverse rotation is performed in the D direction, and the process proceeds to step S69.

In step S69, it is determined whether or not the film has been rewound by one frame. Here, if one frame has been REWIND, the process proceeds to step S70, and if one frame has not been REWIND, the process is continued until REWIND. This is the recording of IX information on film.
Since the magnetic head 26 is arranged in the camera as when performing IND, when a frame in which IX information is not recorded (unphotographed frame) is found, the frame has already passed the exposure position, and therefore, REWIND is performed once. This is for stopping the uncaptured frame at the exposure position.

In step S70, the film feeding drive circuit 25 stops the feeding motor 22 and the step S7 is performed.
Move to 1.

In step S71, the film position detection circuit 23 ends the film position detection.

In this way, the EL 28 can be turned on even during the MRC control process by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28.

FIG. 7 is a flow chart showing the WIND control process in FIG.

In step S81, in response to the exposure of the film in step S15, the film position detection circuit 23 starts the film position detection, and step S8 is started.
Move to 2.

In step S82, it is determined whether or not the EL 28 is lit. Here, if it is on, the process proceeds to step S84, and if it is off, the process proceeds to step S83.

In step S83, since the EL 28 is turned off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to be fully energized with the power source voltage unchanged, and rotates in the WIND direction. The process moves to S85.

In step S84, since the EL 28 is lit and power is being supplied, the DUTY energization control in which the film feeding drive circuit 25 lowers the power supply voltage to the feeding motor 22 to a low voltage equivalent to the drive voltage is possible. Done, wind
The direction is rotated and the process proceeds to step S85.

In step S66, it is determined whether or not the film has been winded by the magnetic head 26 to a position where IX information can be recorded. Here, if it is WIND, the process proceeds to step S86, and if it is not WIND, the process proceeds to step S82, and EL28 is performed until WIND is performed.
The control of the feeding motor 22 according to the turning on / off of is continued.

In step S86, the IX drive circuit 27 starts driving the magnetic head 26 to start recording IX information, and the process proceeds to step S87.

In step S87, it is determined whether or not the recording of the IX information is completed. Here, if completed, the process proceeds to step S88, and if not completed, step S82.
And the control of the feed motor 22 according to the turning on / off of the EL 28 is continued until the end.

In step S88, it is determined whether or not the wind for one frame of film has been completed. Here, if completed, the process proceeds to step S89, and if not completed, the process proceeds to step S82, and the EL 28 is lit / lighted until the process is completed.
The control of the feeding motor 22 according to the turning off is continued.

In step S89, the film feeding drive circuit 25 stops the feeding motor 22 and the step S9 is performed.
Move to 0.

In step S90, the film position detection circuit 23 ends the film position detection.

In this way, the EL 28 can be turned on even during the WIND control process by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28.

Further, the recording control of the IX information is not described here in detail, but the recording control is the WI of the film.
Since it is done according to ND speed, it is actually EL
The recording control itself is also changed according to the turning on / off of 28.

FIG. 8 is a flow chart showing the REWIND control process in FIG.

In step S91, shooting of all film frames is completed in step S19, or MR is performed in step S8.
In response to the determination that the SW9 has been turned on, the film position detection circuit 23 starts film position detection, and proceeds to step S92.

In step S92, it is determined whether or not the EL 28 is lit. Here, if it is on, the process proceeds to step S94, and if it is off, the process proceeds to step S93.

In step S93, since the EL 28 is turned off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to perform full energization with the power source voltage unchanged, and rotates in the REWIND direction. The process moves to S95.

In step S94, since the EL 28 is lit and power is being supplied, the DUTY energization control is performed by the film feeding drive circuit 25 so as to reduce the power supply voltage to the feeding motor 22 to a low voltage. Done, REWI
After rotating in the ND direction, the process proceeds to step S95.

In step S95, it is determined whether the film has been completely rewound into the cartridge. If REWIND ends here, step S96.
If it is not completed, the process proceeds to step S92, and the control of the feeding motor 22 according to the turning on / off of the EL 28 is continued until it is completed.

In step S96, the film feeding drive circuit 25 stops the feeding motor 22 and the step S9 is performed.
Move to 7.

In step S97, the film position detection circuit 23 ends the film position detection.

In this way, the EL 28 can be turned on even during the RWIND control process by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28.

FIG. 9 is a flow chart showing the VEI set control processing in FIG.

In step S101, the DD detection circuit 24
Thus, the detection of DD is started and the process proceeds to step S102.

In step S102, it is determined whether or not the EL 28 is lit. Here, if the light is on, the process proceeds to step S104, and if it is off, the process is step S1.
Move to 03.

In step S103, since the EL 28 is turned off and no power is being supplied, the film feeding drive circuit 25 controls the feeding motor 22 to be fully energized with the power source voltage unchanged, and is rotated in the REWIND direction. The process moves to S105.

In step S104, since the EL 28 is lit and power is being supplied, the DUTY energization control is performed by the film feeding drive circuit 25 so as to reduce the power supply voltage to the feeding motor 22 to a low voltage. Done, REW
After rotating in the IND direction, the process proceeds to step S105.

In step S105, the VEI is set to step S5, step S18, step S20, step S2.
5, it is determined whether the cartridge use state stored in the EEPROM 3 is set so as to be displayed in any one of step 5, step S29, and step S30. Here, if it is set, the process proceeds to step S106, and if it is not set, the process proceeds to step S102, and the feeding motor 22 according to lighting / extinction of the EL 28 until it is set.
Continue control.

In step S106, the film feeding drive circuit 25 stops the feeding motor 22 and the step S106 is performed.
Move to 107.

In step S107, the DD detection circuit 24
Then, the detection of DD by is ended.

In this way, the EL 28 can be turned on even during the VEI set control process by changing the energization control method of the feeding motor 22 according to turning on / off of the EL 28. Here, the energization method is changed to full energization and DUTY energization, but it may be changed to high voltage and low voltage equivalent of DUTY energization, or constant current control may be performed to change the current value.

As described above, by changing the energization control method of the feeding motor 22 according to the turning on / off of the EL 28, the user can freely turn on the EL 28 during any operation processing using the feeding motor 22. A possible camera can be provided.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. The camera configuration according to the second embodiment of the present invention is the same as that of the first embodiment shown in FIGS.

Next, the operation sequence of the camera according to the second embodiment of the present invention will be described with reference to the flow charts shown in FIGS. FIG. 10 shows the ZOOM in FIG.
It is a flow chart which shows control processing.

At step S111, Z at step S9.
In response to the turning on of the OOM SW, the ZOOM position detection circuit 19 starts the ZOOM position detection of the lens barrel, and the process proceeds to step S112.

In step S112, the ZOO that has been turned ON is
It is determined whether M SW is TELE SW7 or WIND SW8. Here, if the TELE SW7 is turned on, the process proceeds to step S113, and the WIDE SW8
If is turned on, the process proceeds to step S121.

In step S113, it is determined whether or not the EL 28 is lit. Here, if the light is on, the process proceeds to step S115, and if it is off, the process is step S1.
Move to 14.

In step S114, since the EL 28 is turned off and no power is being supplied, the lens barrel drive circuit 21 controls the lens barrel motor 18 to be fully energized with the power source voltage unchanged, and the lens barrel motor 18 is rotated in the TELE direction.
Go to 6.

In step S115, since the EL 28 is lit, power is being supplied, so the lens barrel drive circuit 2
DUTY energization control in which the power source voltage is lowered to a low voltage capable of driving the lens barrel motor 18 by 1 is performed, the lens barrel motor 18 is rotated in the TELE direction, and the process proceeds to step S116.

In step S116, the ZOOM position is set to T.
It is determined whether the ELE end has been reached. Where TEL
If it is not the E end, the process proceeds to step S117, and if it is the TELE end, the process proceeds to step S119.

In step S117, TELE SW7
It is determined whether or not is turned off. If it is turned off, the process proceeds to step S118. If it is not turned off, the process proceeds to step S113 and the TELE SW7 is turned off.
EL or until the ZOOM position reaches the TELE end
The lens barrel motor 18 control according to the turning on / off of 28 is continued.

In step S118, it is determined whether the ZOOM position is the predetermined stop position. Here, if it is the predetermined stop position, the process proceeds to step S119, and if it is not the predetermined stop position, the process proceeds to step S113, and the lens barrel motor according to the turning on / off of the EL 28 until the ZOOM position reaches the predetermined stop position or the TELE end. 18 Continue control.

In step S119, the lens barrel drive circuit 21
Thus, the lens barrel motor 18 is stopped and the process proceeds to step S120.

In step S120, the ZOOM position detection circuit 19 ends the ZOOM position detection of the lens barrel.

In step S121, it is determined whether or not the EL 28 is lit. Here, if the light is on, the process proceeds to step S123, and if the light is off, the process is step S1.
Move to 22.

In step S122, since the EL 28 is off and no power is being supplied, the lens barrel drive circuit 21 controls the lens barrel motor 18 to be fully energized with the power supply voltage unchanged, and is rotated in the WIDE direction to step S12.
Go to 4.

In step S123, since the EL 28 is lit and power is being supplied, the lens barrel drive circuit 2
The DUTY energization control in which the power source voltage is lowered to a low voltage capable of driving the lens barrel motor 18 by 1 is performed, the lens barrel motor 18 is rotated in the WIDE direction, and the process proceeds to step S124.

In step S124, the ZOOM position is set to W.
It is determined whether the IDE end has been reached. Where WID
If it is not the E end, the process proceeds to step S125, and if it is the WIDE end, the process proceeds to step S119.

In step S125, WIDE SW8
It is determined whether or not is turned off. If it is turned off, the process proceeds to step S126. If it is not turned off, the process proceeds to step S121, and the WIDE SW8 is turned off.
EL or until the ZOOM position reaches the WIDE end
The lens barrel motor 18 control according to the turning on / off of 28 is continued.

In step S126, it is determined whether the ZOOM position is the predetermined stop position. Here, if it is the predetermined stop position, the process proceeds to step S119, and if it is not the predetermined stop position, the process proceeds to step S121, and the feed motor according to the turning on / off of the EL 28 until the ZOOM position reaches the predetermined stop position or the WIDE end. 22 Continue control.

In this way, the EL 28 can be turned on even during the ZOOM control process by changing the energization control method of the lens barrel motor 18 according to whether the EL 28 is turned on or off.

FIG. 11 is a flow chart showing the lens barrel extension control process in FIG.

In step S131, in response to the SW26 being turned on in step S13, the FOCUS position detection circuit 20 starts detecting the FOCUS position of the lens barrel, and the process proceeds to step S132.

In step S132, it is determined whether or not the EL 28 is lit. Here, if the light is on, the process proceeds to step S134, and if it is off, the process is step S1.
Move to 33.

In step S133, since the EL 28 is turned off and no power is being supplied, the lens barrel drive circuit 21 controls the lens barrel motor 18 to be fully energized with the power supply voltage unchanged, and is rotated in the TELE direction to step S13.
Go to 5.

In step S134, since the EL 28 is on, power is being supplied, so the lens barrel drive circuit 2
DUTY energization control in which the lens barrel motor 18 is lowered to a low voltage capable of driving the power source voltage by 1 is performed, the lens barrel motor 18 is rotated in the TELE direction, and the process proceeds to step S135.

In step S135, the lens barrel extension amount calculated by the CPU 1 according to the distance measurement result in step S12,
It is determined whether or not the lens barrel extension has been completed. Here, if completed, the process proceeds to step S136, and if not completed, the process proceeds to step S132, and the lens barrel motor 18 control according to lighting / extinction of the EL 28 is continued until it is completed.

In step S136, the lens barrel drive circuit 21
Thus, the lens barrel motor 18 is stopped and the process proceeds to step S137.

In step S137, the FOCUS position detection circuit 20 ends the FOCUS position detection of the lens barrel.

In this way, by changing the energization control method of the lens barrel motor 18 according to the turning on / off of the EL 28, the EL 28 can be turned on even during the lens barrel feeding control process.

FIG. 12 is a flow chart showing the lens barrel retraction control processing in FIG.

In step S141, the ZOOM position detection circuit 19 causes the ZOOM of the lens barrel to move the lens barrel to the photographing standby position in response to the exposure in step S15.
Position detection is started and the process proceeds to step S142.

In step S142, it is determined whether the EL 28 is lit. Here, if the light is on, the process proceeds to step S144, and if it is off, the process is step S1.
Move to 43.

In step S143, since the EL 28 is turned off and no power is being supplied, the lens barrel drive circuit 21 controls the lens barrel motor 18 to be fully energized with the power source voltage unchanged, and is rotated in the WIDE direction to step S14.
Go to 5.

In step S144, since the EL 28 is lit, power is being supplied, so the lens barrel drive circuit 2
DUTY energization control in which the power supply voltage is lowered to a low voltage capable of driving the lens barrel motor 18 by 1 is performed, the lens is rotated in the WIDE direction, and the process proceeds to step S145.

In step S145, the ZO that has photographed
It is determined whether or not the transfer is completed up to the standby position at the OM position. Here, if completed, the process proceeds to step S146, and if not completed, the process proceeds to step S142, and the lens barrel motor 1 according to lighting / extinction of the EL 28 until completed.
8 Continue control.

In step S146, the lens barrel drive circuit 21
Thus, the lens barrel motor 18 is stopped and the process proceeds to step S147.

In step S147, the detection of the ZOOM position of the lens barrel by the ZOOM position detection circuit 19 is completed.

In this way, by changing the energization control method of the lens barrel motor 18 depending on whether the EL 28 is turned on or off, the EL 28 can be turned on even during the lens barrel retraction control process. Here, change the energization method to full energization and D
Although the UTY energization is used, the high voltage and the low voltage of the DUTY energization may be changed, or constant current control may be performed to change the current value.

As described above, by changing the energization control method of the lens barrel motor 18 depending on whether the EL 28 is turned on or off, the user himself / herself can freely turn on the EL 28 during any operation processing using the lens barrel motor 18. A possible camera can be provided.

In the above-described first and second embodiments, the control method of the actuator for mechanical driving according to the turning on / off of the EL 28 is changed, but the strobe charge control is changed or the red-eye reduction is performed. The lighting control of the red-eye lamp may be changed. Further, the recording control of the captured image in the non-volatile memory in which data can be rewritten may be changed. Furthermore, AE
A control method of (photometry) or AF (distance measurement) may be used.

[0165]

As described above, according to the invention of each claim, the power consumption of the actuator or the circuit is set to a lower value when the lighting means is turned on and when the lighting means is turned off than when the lighting means is turned off. It is possible to realize a display illumination device for a camera in which the user can turn on the illumination freely even in the operating state.

[Brief description of drawings]

FIG. 1 is a block diagram of an APS camera showing a concept of a first embodiment of the present invention.

FIG. 2 is a flowchart showing a basic series of operation processing of the camera of the first embodiment of the present invention.

FIG. 3 is a flowchart showing EL control processing of the camera of the first embodiment of the present invention.

FIG. 4 is a DEP of the camera according to the first embodiment of the present invention.
The flowchart which shows a control process.

FIG. 5 is a flowchart showing AL control processing of the camera of the first embodiment of the present invention.

FIG. 6 is an MRC of the camera of the first embodiment of the present invention.
The flowchart which shows a control process.

FIG. 7 is a WIN of a camera according to the first embodiment of the present invention.
The flowchart which shows D control processing.

FIG. 8 is a REW of the camera according to the first embodiment of the present invention.
The flowchart which shows IND control processing.

FIG. 9 is a VEI of the camera according to the first embodiment of the present invention.
The flowchart which shows a set control process.

FIG. 10 is a ZO of a camera according to a second embodiment of the present invention.
The flowchart which shows OM control processing.

FIG. 11 is a flowchart showing a lens barrel extension control process of the camera of the second embodiment of the present invention.

FIG. 12 is a flowchart showing a lens barrel retraction control process of the camera of the second embodiment of the present invention.

[Explanation of symbols]

1 CPU 4 SW1 5 SW2 6 TELE SW 7 WIDE SW 8 MR SW 9 EL SW 17 Lens barrel motor 20 Lens barrel drive circuit 21 Feed motor 24 Film feeding drive circuit 27 EL 28 EL drive circuit 29 LCD

Claims (10)

[Claims] 1. A display means for displaying information of a camera, an illumination means for illuminating the display means, and an operation control means for controlling power consumption in a control circuit for controlling a predetermined operation of the camera. A display illumination device for a camera, wherein the operation control means controls the drive power consumption of the control circuit when the illumination means is turned on to a value lower than the drive power consumption when the light is turned off while the control circuit is being driven. . 2. The illuminating means is turned on in response to an operation of an operating member, and the operation control means reduces the drive power consumption when the illuminating means changes from a non-lighting state to a lighting state while a control circuit is being driven. The value is shifted to a value.
The display illumination device for the camera according to. 3. The operation control means shifts the consumed drive power from a low value to a high value when the lighting means shifts from a lighting state to a non-lighting state during driving. Alternatively, the display illumination device of the camera according to the item 2. 4. The display illumination device for a camera according to claim 2, wherein the illumination means lights up for a predetermined time in accordance with an operation of the operation member. 5. The display illumination device for a camera according to claim 1, wherein the predetermined operation is a strobe charging operation. 6. The display illumination device for a camera according to claim 1, wherein the predetermined operation is an operation for recording and controlling a captured image in a non-volatile memory in which data can be rewritten. 7. Operation comprising: display means for displaying information of the camera, illumination means for illuminating the display means, and operation control means for controlling a predetermined operation of the camera by driving an actuator. A display lighting device for a camera, wherein the control means controls the driving power consumption of the actuator when the lighting means is turned on to a value lower than the driving power consumption when the lighting means is turned off while the actuator is being driven. 8. The lighting means lights up in response to an operation of an operating member, and the operation control means reduces the driving power consumption when the lighting means changes from a non-lighting state to a lighting state while an actuator is being driven. The display illumination device for a camera according to claim 7, wherein the display illumination device is controlled to a value. 9. The operation control means controls the consumption drive power to shift from a low value to a high value when the lighting means shifts from a lighting state to a non-lighting state while the actuator is being driven. Item 9. A display illumination device for a camera according to Item 7 or 8. 10. The display illumination device for a camera according to claim 8, wherein the illumination means lights up for a predetermined time in accordance with an operation of the operation member.