JP2001324745A - Film rewinding device for camera - Google Patents

Film rewinding device for camera

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Publication number
JP2001324745A
JP2001324745A JP2000143705A JP2000143705A JP2001324745A JP 2001324745 A JP2001324745 A JP 2001324745A JP 2000143705 A JP2000143705 A JP 2000143705A JP 2000143705 A JP2000143705 A JP 2000143705A JP 2001324745 A JP2001324745 A JP 2001324745A
Authority
JP
Japan
Prior art keywords
film
rewinding
means
rewind
camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2000143705A
Other languages
Japanese (ja)
Inventor
Yoichiro Okumura
洋一郎 奥村
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd, オリンパス光学工業株式会社 filed Critical Olympus Optical Co Ltd
Priority to JP2000143705A priority Critical patent/JP2001324745A/en
Publication of JP2001324745A publication Critical patent/JP2001324745A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a film rewinding device for a camera capable of attaining both of user's intended purposes to quietly rewind the film and to quickly rewind the film while making a big noise. SOLUTION: The film rewinding device for a camera for rewinding the film loaded to the camera is provided with a film rewinding means (sequence motor 144) for rewinding the film, an operating means (power SW 153) for switching a 1st operating state and a 2nd operating state, and a control means (main CPU 120) for changing a rewinding speed by the film rewinding means when the 1st operating state is switched to the 2nd operating state in the operating means after starting the film rewinding operation by the film rewinding means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film rewinding device for a camera.

[0002]

2. Description of the Related Art A camera capable of loading a silver halide film employs a film rewinding device, and various proposals have been made.

[0003] For example, Japanese Patent No. 2950686 relates to a technique for reducing noise when rewinding a film, and for a period of time from when a film is wound into a cartridge when rewinding a film to when a rewinding motor is stopped. Discloses a technique for preventing the load of the rewinding motor from becoming light and preventing the motor noise from increasing.

[0004] Japanese Patent No. 2953015 relates to a technique for reducing noise when rewinding a film, and has a function of temporarily stopping the rewinding during rewinding of the film by operating means. It also has a function to restart rewinding after a predetermined time has elapsed so that the user does not forget to rewind and open the back cover.

[0005]

However, the above-mentioned Japanese Patent No. 2950686 and Japanese Patent No. 2
The prior art including the publication No. 953015 has the following problems.

[0006] 1. Regardless of the user's intention, the rewind time may be longer.

[0007] 2. If the user forgets to rewind and the pause time is long, the back cover may be opened.

[0008] For example, at a wedding or a party, if rewinding starts suddenly during shooting against the intention of the user,
When the surroundings are quiet, the rewinding sound can be very loud and can cause panic.

Moreover, if the rewinding is stopped, the film cannot be replaced for the next photographing, and the camera is placed in a bag or covered with clothes so that the sound is hard to hear and the rewinding is performed. I have to continue.

Also, if you stop rewinding in the middle, if you are distracted by something else, you forget that you are rewinding and open the back cover,
There is a risk that the important film you shot will be lost.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and has as its object the intention of a user to rewind quietly and to rewind quickly even if the sound is loud. A film rewinding device for a camera that can incorporate both the user's intention and the intention of wanting to prevent accidental opening of the back cover during rewinding and ruining the film. To provide.

[0012]

According to a first aspect of the present invention, there is provided a film rewinding device for rewinding a film loaded in a camera. Film rewinding means, operation means capable of switching between a first operation state and a second operation state, and after the film rewinding means starts rewinding the film, the operation means changes from the first operation state to the first operation state. And control means for changing the rewind speed by the film rewind means when switched to the second operation state.

According to a second aspect of the present invention, there is provided a film rewinding device for a camera for rewinding a film loaded in a camera, wherein a film feeding means for winding up an exposed film and a terminal of the film are detected. Film end detection means, film rewind means for rewinding the film, operation means capable of switching between a first operation state and a second operation state, and film winding by the film feeding means, When the film end detecting means detects the end of the film, the film winding is stopped, and after the film rewinding by the film rewinding means is started, the operating means is moved from the first operating state to the second operating state. And control means for changing the rewind speed by the film rewind means when the operation state is switched.

According to a third aspect of the present invention, in the first or second aspect, there is further provided a midway rewinding operation means for rewinding the film halfway, and the control means comprises the midway rewinding operation means. When the film is rewound halfway by the operation of the means, the rewind speed by the film rewind means is increased.

According to a fourth aspect of the present invention, there is provided a film rewinding device for a camera for rewinding a film loaded in a camera, wherein a film feeding means for winding up an exposed film and an end of the film are detected. Film end detection means, film rewind means for rewinding the film, operation means capable of switching between a first operation state and a second operation state, and intermediate winding for rewinding the film halfway Return operation means, and during the film winding by the film feeding means, when the film end detecting means detects the end of the film, the film winding is stopped, and the film end is detected by the film end detecting means. After the detection or operation of the above-mentioned halfway rewind operation means, after the start of film rewind by the film rewind means, When serial operation means is switched from the first operating state to the second operational state, and control means for changing the rewinding speed of the film rewinding means.

According to a fifth aspect of the present invention, in the first aspect of the invention, the operation means is a power switch of a camera.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an external view of a camera according to a first embodiment of the present invention. FIG. 1A is a side view of the camera, FIG. 1B is a top view of the camera, and FIG. FIG. 2 is a front view of the camera. This camera can arbitrarily set various photographing modes by a single-lens reflex system.

Reference numeral 1 denotes a strobe light emitting unit, which is provided with a strobe unit stored in the top of the main body, and is used by popping up as necessary. Reference numeral 2 denotes a display unit which is constituted by a liquid crystal display panel, and displays and outputs various information relating to the camera.

Reference numeral 3 denotes a shooting mode setting switch for setting a shooting mode such as "landscape mode", "portrait mode", "stop action mode", "night scene mode" or "full auto mode". Is possible. Reference numeral 4 denotes a two-stage press-down release SW, which is composed of a first-stage first release SW and a second-stage second release SW. Reference numeral 5 denotes a zoom up / down switch, and reference numeral 6 denotes a photographing lens.

In this embodiment, in addition to the above configuration, a power SW 112 as operating means is provided at the top of the camera, and a midway rewind SW111 as midway rewinding operating means is provided at the bottom of the camera.

FIG. 2 is a diagram showing a configuration of an internal circuit of the camera according to the first embodiment.

In FIG. 2, a main C as a control means is provided.
The PU 120 sequentially executes the programs stored in the internal ROM and controls peripheral ICs and the like. The AFIC 134 is an IC for auto focus. In this camera, the auto focus method is TT
The L phase difference detection method is adopted.

The AFIC 134 first issues a reset signal (AF) of the AFIC 134 from the main CPU 120.
RES) Sig101 is sent and reset. Light from the subject passes through the photographing lens 6 and reaches a photo sensor array arranged on the upper surface of the AFIC 134. Then AF
In the IC 134, processes such as light intensity integration and quantization are performed. Then, a focus shift amount is calculated as the distance measurement information.

When the light quantity integration is completed, a signal (AFEND) Sig 102 indicating that the light quantity integration has been completed is sent to the main CPU 120. The ranging information includes a signal (AFCEN) Sig103 indicating that communication between the AFIC 134 and the main CPU 120 is to be performed, and a data signal (DATA).
Sig104, clock signal for synchronization (CLK) Sig1
At 05, it is transferred to the main CPU 120.

If the characteristics of the respective elements of the photosensor array vary, accurate distance measurement information cannot be obtained as it is. Therefore, the variation information of the photo sensor array is stored in advance in the EEPROM 135 which is a nonvolatile storage element, and the main CPU 120 performs a correction calculation of the distance measurement information obtained from the AFIC 134. In addition, the EEPROM 135 has mechanical variations,
Various adjustment values such as variations in electrical characteristics of various elements are stored.

These adjustment values may be adjusted by EEPRO
A signal (EPCEN) Sig 107 that activates M135, that is, makes it communicable, and a data signal (D
ATA) Sig108, synchronous clock signal (CLK) S
ig109 enables reading. The exchange of data between the main CPU 120, the AFIC 134, and the EEPROM 135 is performed by serial communication.

The date module 137 is a main CPU 1
The date is imprinted on the film by the imprint signal Sig110 from the camera 20. The light emission time of the imprint lamp changes stepwise according to the film ISO sensitivity. The interface IC (IFIC) 138 is the main CP
IFIC activation signal (IFCENb) Si from U120
g111, the main CPU 120 and the latch signal (LATCH) Sig112, 4-bit bus line signals (D0b to D3b) Sig113 to Sig11
6. Perform parallel communication using the D / Ab signal Sig117, measure subject brightness, measure the temperature in the camera, shape the waveform of the output signal of the photo interrupter, etc., control the constant voltage drive of the motor, generate a temperature stable voltage, The generation of the proportional voltage, the check of the remaining amount of the battery, the reception of the infrared remote controller, the control of the motor driver IC, the control of various LEDs, the monitoring of the low voltage of the power supply voltage, the control of the booster circuit, and the like are performed.

Note that the latch signal Sig112 is a signal for setting a timing for reading a signal on the bus line. The D / Ab signal is a 4-bit bus line signal Sig1
13 to Sig 116 are signals indicating whether they indicate an address or data. D / Ab
When the signal is "L", the 4-bit bus line signal Sig1
13 to Sig 116 represent an address, and when the D / Ab signal is “H”, the 4-bit bus line signal Sig 113 to
Sig 116 represents data.

The measurement of the object brightness is performed using a two-divided silicon photodiode 170. The light receiving surface of the silicon photodiode 170 is divided into two parts such as a central part of the screen and a peripheral part thereof. SPOT metering that measures light only at a part of the central part of the screen and averaging metering that measures light using the entire screen are described. Photometry can be performed as follows. The photometric sensor outputs a current corresponding to the subject brightness
Output to IC138. The IFIC 138 converts the output from the photometric sensor into a voltage and transfers it to the main CPU 120. The main CPU 120 performs exposure calculation, backlight determination, and the like based on the voltage information.

In measuring the temperature in the camera, a voltage proportional to the absolute temperature is output by a circuit built in the IFIC 138, and the signal is subjected to A / D conversion by the main CPU 120 to obtain a value. The obtained temperature measurement value is used for correction of a mechanical member whose state changes according to the temperature, an electric signal, and the like. The waveform shaping of the photo interrupter or the like is performed by comparing the photocurrent output from the photo interrupter or the photoreflector with the reference current and outputting it from the IFIC 138 as a rectangular wave. At this time, noise is removed by giving the reference current a hysteresis. Also, the main CP
By communicating with U120, the reference current and the hysteresis characteristics can be changed.

To check the remaining amount of the battery, a low resistance is connected to both ends of the battery, the voltage at both ends of the battery when a current flows is divided in the IFIC 138 and output to the main CPU 120, and the main CPU 120 /
D conversion is performed to obtain a voltage value. The reception of the infrared light remote control is performed by the light emitting LED 14 of the remote control transmission unit 140.
The modulated infrared light is emitted from 1 and the infrared light is received by the silicon photodiode 142 for light reception. The output of the silicon photodiode 142 is subjected to processing such as waveform shaping inside the IFIC 138 and transferred to the main CPU 120.

The IFIC 138 is provided with a dedicated terminal for monitoring the low voltage of the power supply voltage. When the voltage input to the IFIC 138 becomes lower than a specified value, a reset signal is output from the IFIC 138 to the main CPU 120, and
Runaway is prevented beforehand. The control of the booster circuit operates the booster circuit when the power supply voltage falls below a predetermined value. Also, the IFIC 138 has an LE for displaying in the viewfinder such as the end of AF distance measurement and a flash emission warning.
D143 or an LED used for a photo interrupter or the like is connected.

The on / off of these LEDs and the control of the amount of emitted light are controlled by the main CPU 120 and the EEPROM 13.
5. Communication is performed between IFICs 138 and IFIC 138
Control directly. What is controlled is L of SCPI147
ED current Sig131, LED current S of LDPI148
ig132, LED current Sig13 of ZMPR172
3, LED current Sig134 of ZMPI173, AVP
LED current Sig135 of I152, L of WPR178
ED current Sig146 and LE for display in viewfinder
D143 is on and off.

In the constant voltage drive control of the motor, the drive voltage can be set stepwise by communication with the main CPU 120. The motor driver IC 139 includes a sequence motor (film rewinding means, film feeding means) 144 for feeding a film including film winding and rewinding, charging a shutter, and driving a mirror, and an LD motor for driving a lens for focus adjustment. 145,
Driving of three motors of the ZM motor 146 for zooming of the lens frame, driving of the booster circuit, driving of the LED 171 for displaying the self-timer operation, and a front curtain magnet (MGF) for attracting and holding the front curtain of the focal plane shutter.
176, a control of a back film magnet (MGS) 177 for sucking and holding a back film of the focal plane shutter is performed.

These operation controls, for example, which device is to be driven, whether the motor is to rotate forward or reverse,
The signal of the main CPU 120 is used as an IF
IC 138 receives, IFIC 138 is motor driver 1
A signal Sig11 for turning on / off each transistor 39
8 to control. Whether the sequence motor 144 is in the state of shutter charge, film winding, or film rewinding is determined by a photo interrupter SC for detection.
The signal Sig 119 is detected by PI 147 and the main C
Output to PU 120.

The extension amount of the lens is detected by a photo interrupter LDPI 148 attached to the LD motor 145, and its output Sig 120 is sent to the main CPU 120 after waveform shaping by the IFIC 138. The zooming state of the mirror frame is based on the photo interrupter ZM built in the mirror frame.
It is detected by the PI 173 and the photoreflector ZMPR172. When the mirror frame is between TELE and WIDE,
The high reflection portion provided on the lens frame is configured to face the ZMPR 172, and the low reflection portion is configured to face the other range.

Thus, the output Sig1 of the ZMPR 172 is obtained.
21 is input to the main CPU 120, so that TELE
Edge and WIDE edge can be detected. ZMPI173
Is attached to the ZM motor 146 and its output Sig
122 is a main C after waveform shaping by IFIC 138
It is input to the PU 120 and detects a zooming amount from the TELE end or the WIDE end.

The motor driver IC 150 includes a stepping motor for driving the aperture adjustment unit and an AV motor 151.
Is an on / off signal (ENA) from the main CPU 120
Sig136 and forward / reverse signal (IN) Sig12
3 is driven. AVPI 152
The output Sig 124 is subjected to waveform shaping by the IFIC 138 and input to the main CPU 120 to detect the aperture open position.

The liquid crystal display panel 136 is a main CPU 1
20 segment signal (SEG) Sig12
5. In accordance with the common signal (COM) Sig 126, the number of film frames, a shooting mode, a strobe mode, an aperture value, a remaining battery level, and the like are displayed.

A strobe unit 179 is used to give a necessary luminance to a subject by emitting a light emitting tube when the luminance of the subject is insufficient at the time of photographing or auto-focus distance measurement. I at the signal
Strobe charging signal (STCHG) Sig of FIC138
127, strobe light emission start signal (STON) Sig12
8. Signal to stop strobe light (STOFF) Si
The control is performed by each signal of g129. The strobe charging voltage is sent to the main CPU 120 as a VST signal Sig130.

The WPR 178 is a photo-reflector for detecting a film feed amount and a film end. This WPR 178 is arranged so as to face the perforation of the film. Since the reflectance of light is different between the film surface and the perforated portion, the W
The output of PR178 is different when corresponding to each.
When the film is fed, the WP 178 alternately opposes the film surface and the perforation, so that the output Sig 147 of the WPR 178 has a pulse shape, and the movement amount for one frame of the film can be detected by counting the number.

Key signals 0-5 (KEY0-KEY5) S
ig 137 to sig 142 and key commons 0 to 2 (K
EYCOM0 to 2) Sig143 to Sig145 are used to detect which of the switches 121 to 133 is on.

The above KEY0 to KEY5 are usually the main C
Since the signal is pulled up inside the PU 120, the signal level is in the “H” state. Here, for example, KEYCOM0S
It is assumed that ig143 is “L”, KEYCOM1Sig144 is “H”, and KEYCOMSig145 is “H”. At this point, if R1SW121 is turned on, KEY0
Sig 137 changes from “H” to “L”. Therefore, the signal levels of KEYCOM0 to 2Sig143 to Sig145 and KEY0 to 5Sig137 to Sig142
Switch 121 to switch 1
It is possible to know which of 33 is on. In addition, KEYCOM0 to 2Sig143 to Sig
145 cannot be set to "L" two or more at the same time.

First release SW (1RSW) 12
1 is turned on when the release button is half-pressed, and performs a distance measuring operation. Second release SW (2R
SW) 122 is turned on when the release button is fully pressed, and a shooting operation is performed based on various measured values. A zoom up switch (ZUSW) 123 and a zoom down switch (ZDSW) 124 are switches for performing zooming of a lens frame. When the ZUSW 123 is turned on, zooming is performed in a long focus direction, and when the ZDSW 124 is turned on, zooming is performed in a short focus direction.

When the self switch (SELFSW) 125 is turned on, the camera enters a self-timer shooting mode or a standby state of the remote controller. In this state, the R2SW12
When 2 is turned on, self-timer shooting is performed, and when a shooting operation is performed with the remote control transmitter, shooting with the remote control is performed. When the spot switch (SPOTSW) 126 is turned on, a spot metering mode is set in which metering is performed only at a part of the center of the shooting screen. Note that SPOTSW126
Normal photometry when is off is performed using the entire shooting screen.

Pict 1 switch (PCT1SW) 127
A pictograph 4SW (PCT4SW) 130 and a program switch (PSW) 131 are switches for switching a program photographing mode, and the photographer selects a mode according to photographing conditions. When the PCT1SW127 is turned on, a portrait mode is set, and the aperture and the shutter speed are determined so that the depth of field becomes shallow within an appropriate exposure range. When the PCT2SW128 is turned on, a night view mode is set, and the exposure is set one step lower than the value of the appropriate exposure during normal shooting. When the PCT3SW 129 is turned on, a landscape mode is set, and the values of the aperture and the shutter speed are determined so that the depth of field becomes as deep as possible within an appropriate exposure range.

When the PCT4SW130 is turned on, a stop motion mode is set, and the shutter speed is set to be as fast as possible. In this case, the red-eye prevention mode of the flash mode cannot be used.

The above PCT1SW127 to PCT4SW
130 cannot select more than one at the same time.

The PSW 131 is a normal program photographing mode switch. By pressing this PSW 131,
Reset of PCT1SW127 to PCT4SW130 and reset of an AV priority program mode described later are performed. When the AV priority switch (AVSW) 133 is turned on, the shooting mode becomes the aperture priority program mode. In this mode, the AV value is determined by the photographer, and the shutter speed is determined by a program according to the AV value. In this mode, PCT2SW128 and PCT4SW13
0 is a switch for setting the AV value without the above-mentioned function. PCT2SW128 is a switch for increasing the AV value, and PCT4SW130 is a switch for decreasing the AV value.

A flash switch (STSW) 132 is a switch for switching the flash mode of the flash, and is usually an automatic flash mode (AUTO) or a red-eye reduction automatic flash mode (AUTO).
-S), a switch for switching between a forced light emission mode (FILL-IN) and a strobe off mode.

A power switch (PWSW) 153 is a main switch of the present camera, and is a power switch 11 shown in FIG.
This corresponds to 2.

A panorama switch (PANSW) 154 is a switch for detecting whether the photographing state is panoramic photographing or normal photographing, and is turned on at the time of panoramic photographing.

A back cover switch (BKSW) 155 is a switch for detecting the state of the back cover. When the back cover is closed, the back cover is turned off. When the state of the BKSW 155 is changed from ON to OFF, the loading of the film is started.

Shutter charge switch (SCSW)
Reference numeral 156 denotes a switch for detecting a shutter charge state.

Mirror up switch (MUSW) 157
Is a switch for detecting a mirror-up state, and is turned on when the mirror is up.

A DX switch (DXSW) 158 is a D indicating the sensitivity of the film printed on the film cartridge.
This is a switch for reading the X code and for detecting the presence or absence of film loading, and is composed of five switch groups (not shown).

Pop-up switch (PUPSW) 15
9 is a switch for controlling the strobe. PUPSW1
Reference numeral 59 is interlocked with the movement of the strobe light-emitting unit. When the light-emitting unit is raised, the PUPSW 159 is turned on to perform strobe charging. If the subject is low in brightness and the flash mode is the normal automatic flash mode (AUTO) or the red-eye reduction automatic flash mode (AUTO-S) and the PUPSW 159 is turned on, flash flash is permitted.

A rewind switch (RWMSW) 111 is an operation switch for forcibly rewinding the film, and corresponds to the midway rewind SW 111 in FIG. When the RWMSW 160 is on, the film is forcibly rewound.

An XSW 174 is a switch for setting the timing of strobe light emission, and is turned on when the front curtain of the shutter finishes running, and turned off when the shutter charge is completed.

The piezoelectric buzzer (PCV) 175 emits a sound at the time of focusing at the time of auto focus and at the time of operating a switch.

FIG. 3 shows a state in which the back cover 101 of the camera is opened, and a cartridge chamber 103 for loading a film cartridge is provided inside the camera body 102.
, A shutter mechanism 104 and a spool chamber 105 are arranged, a WPR 23 corresponding to the WPR 178 in FIG. 2 is arranged at the lower left of the shutter mechanism 104, and a zoom lever 106 and a finder 107 are arranged outside.

At the center on the back cover 101 side, a pressure plate 109 for pressing a film (not shown) against the surface of the seal 108 on the camera side is provided. Is provided, and an imprinting unit 82 is arranged behind it. When the back cover 101 is closed, the WPR
The SPR 14 is arranged at a position corresponding to the SPR 23.

Further, the above-mentioned halfway rewind SW 111 is provided at the bottom of the camera.

FIGS. 4, 5 and 6 are flow charts for explaining the processing operation by the main CPU 120 on the camera body side.

First, power is supplied by loading a battery or the like, and the main CPU 120 is initialized (step S1). At this time, RAM and port are initialized,
Necessary data is read from the EEPROM 135 and set.

Next, the power SW 11 provided in the camera
It is determined whether or not No. 2 has been operated (step S2). If it has been operated (YES), it is determined whether or not the power SW 112 has been turned on (step S3). In this determination, the power SW 112 is turned on (from OFF to ON).
In this case (YES), the photographing lens 6 is extended from the retracted position to a photographable position (step S4).

On the other hand, if the power switch 112 is not turned on (from ON to OFF) (NO), the photographing lens 6 is retracted (step S5), but the power switch 112 is not operated in step S2. If (NO), or if the taking out of the taking lens 6 is completed or the retracting is completed, it is determined whether or not the halfway rewind SW 111 has been operated (step S6).

In this determination, the intermediate rewind SW 111 is
If N (YES), the film is rewound (step S7). However, the midway rewind SW111
Is not operated (NO), or if rewinding is completed, the open / close state of the back cover 101 is changed to the back cover SW15.
It is determined whether or not 5 has been operated (step S8). If it has been operated (YES), it is determined whether or not the back cover SW 155 has been turned on (step S9).

If the back cover SW 155 is not ON (ON to OFF) in this determination (NO), it is determined that the open back cover 101 has been closed, and the film cartridge loaded at that time is closed. An idle feed is performed to pull out the film and wind it around the spool (step S1).
0), the completion of the film loading is recognized based on the success of the idle feeding (step S11). However, in the above step S9, the back cover SW155 was turned on (from OFF to ON).
If so (YES), it is recognized that the closed back cover 101 has been opened (step S12).

Then, in step S8, the back cover SW15
If No. 5 has not been operated (NO), that is, if the back cover 101 has not been opened or closed, and if the recognition in steps S11 and S12 has been completed, it is determined whether or not the power is ON (step S13). If the power SW 112 is not ON (NO), the process returns to the step S2. But,
If the power switch 112 has been turned on (YES), information is displayed on the liquid crystal display panel 136 on the camera body side (step S14), for example, to detect the state of the zoom switch and the photographing mode setting switch 3 and to perform processing therefor. (Step S
15) It is determined whether or not the release button has been pressed and the 1RSW has been turned on (step S16).

If it is determined that the 1RSW is not ON (NO), the process returns to step S2. However, 1RS
If W is turned on (YES), photometry is performed (step S17), the film sensitivity written on the film cartridge is detected (step S18), and exposure calculation for determining a shutter speed and the like is performed (step S19). .

After that, the AF sensor is integrated, the defocus amount is calculated, and the lens drive amount for focusing is obtained (steps S20 to S22). The focusing lens is driven based on the obtained lens driving amount (step S23). After the driving is completed, it is determined whether or not the focusing by the focusing lens is within a predetermined range (step S24). If the distance exceeds the range (NO), the flow returns to step S17, and the light measurement is started again. However, if it is within the range (YE
S), a symbol or the like indicating that the image is focused on the liquid crystal display panel 136 or the viewfinder is displayed (step S25).

Then, it is determined whether or not 1RSW is ON (step S26). If it is OFF (NO), the process returns to step S2. However, if it is ON (YES), it is detected whether or not 2RSW is ON (step S27), and if it is not ON (N
O), the process returns to step S26 and waits. If it is turned on (YES), the process proceeds to step S28.

In step S28, step S1 in FIG.
The exposure is performed on the film based on the result of the exposure calculation performed in step S9. In step S29, step S11 in FIG.
Confirms whether or not the completion of film loading is recognized. If the loading of the film has been confirmed, the flow advances to step S30 to wind up one frame of the film, and it is determined in step S31 whether or not the film has reached the end. Whether it is the film end or not is determined based on whether a predetermined number of perforations have been detected within a predetermined time. If the predetermined number of perforations cannot be detected within a predetermined time, it is determined that the film is the film end. In this case, the flow advances to step S32 to execute automatic film rewinding.

After execution of step S32, or if the determination in step S29 or S31 is NO, the process returns to step S2 in FIG.

FIG. 7 is a flowchart for explaining the operation of the first embodiment of the present invention. In the first embodiment,
If the midway rewind is selected, it is considered that the user intends to rewind the film at a high speed, so that the film is rewound at a high speed. It is characterized in that the user can select high-speed rewind or low-speed rewind according to the operation.

First, in step S33, a timer, a register, a RAM,
Initial settings including initialization of the interface IC and the like are performed. In step S34, it is determined whether the film is to be rewound in the middle or the automatic film rewinding. In the case of the automatic film rewinding, in order to allow the user to select whether the film feeding is performed at a high speed or a low speed, the process proceeds to step S35. Whether or not the power SW 112 is turned off (the power SW 11
2 is switched from ON (first operation state) to OFF (second operation state). If the power switch 112 is turned off, the motor drive voltage is set to 3 V (step S37), and if the power switch 112 is turned on, the motor drive voltage is set to 5V (step S36). When the motor drive voltage is set to 3 V, rewinding is performed at a low speed, but there is an advantage that the rewinding sound is reduced. When the motor drive voltage is set to 5 V, the rewinding sound becomes large, but the rewinding is performed at a high speed.

If it is determined in step S34 that rewinding is being performed halfway, the process immediately proceeds to step S36 to set the motor drive voltage to 5V.

After step S36 or S37, in step S38, the film drive motor is driven in the rewind direction based on the drive voltage set in step S136 or S137. Next, while detecting a perforation signal in step S39, it is determined whether or not the perforation signal has changed (step S40). If there is a signal change, the timer is reset in step S41 and restarted to count. To start. The timer here is used to detect that a predetermined number of perforation signals are not output within a predetermined time.

Next, in step S42, it is determined whether or not the timer count value is equal to or greater than a predetermined value. If the timer count value is less than the predetermined value, the process returns to step S34;
Proceed to 43. The timer count value differs between when the film drive motor is driven at 5 V and when it is driven at 3 V. In the case of 5 V drive, for example, 5 seconds, 3 V
In the case of driving, for example, it is 10 seconds. These two timer count values are switched and set in step S41 according to the voltage for driving the motor.

In step S43, the process waits for a predetermined time or more for the film to move from the position where the perforation signal is detected to the cartridge. This is to confirm that the film has been securely wound on the cartridge. The predetermined time here is also different between the case where the film driving motor is driven at 5V and the case where the film driving motor is driven at 3V. For 5V driving, for example, 10 seconds, and for 3V driving, for example, 20 seconds. The predetermined time is switched and set in step S43 according to the voltage for driving the motor.

In the next step S44, the film driving motor is stopped, and in step S45, information indicating that the film has been rewound is stored in the EEPROM 135 of FIG.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described. The configuration of the second embodiment is basically the same as that of the above-described first embodiment, and a description thereof will be omitted.

The first example of the second embodiment is characterized in that after the automatic rewinding is started by detecting the film end, the rewinding speed can be changed by operating the power SW by the user. FIG. 8 is a time chart for explaining the operation at this time.

The user releases the first release SW (1
When RSW is pressed, photometry and distance measurement are performed to perform a focusing operation on the subject, and the second release SW (2
When RSW is pressed, an exposure operation for photographing is performed.
After photographing, the film driving motor is driven at a motor driving voltage (Mot voltage) of 5 V to wind the film in the winding direction by one.
Feed the pieces. The signal indicating the motor driving direction at this time is the winding direction.

A perforation signal (WPR) is output with the movement of the film at this time. When the perforation signal (WPR) is no longer output while the film is being wound after several frames have been taken, the timer for film end detection is started, and a predetermined number of perforations are detected within a predetermined time. If not, it is determined that it is the film end. When the film end is detected, the film drive motor is driven at a motor drive voltage (Mot voltage) of 5 V to feed the film in the rewind direction. The signal indicating the motor drive direction at this time is the rewind direction.

During the rewinding of the film, for example, * 1 in FIG.
The user turns off the power SW 112 at the time indicated by (from when the power SW 112 is turned on (first operation state)
F (switched to the second operation state), the motor drive voltage (Mot voltage) of the film drive motor is set to 5
Change from V to 3V. As a result, the film is fed at a low speed, so that the rewind sound is reduced. Further, from this point on, the interval between the perforation signals becomes wide as shown in the figure.

To return the film rewinding speed to the original speed, the power SW is turned on again to change the motor driving voltage (Mot voltage) of the film driving motor from 3 V to 5 V, thereby increasing the film speed. Sent by

When the perforation signal is no longer output, time counting by the rewind film end detection timer is started. If a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound into the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

Next, as a second example of the second embodiment, after the user has pressed down the rewind SW during photographing to start rewinding halfway, the rewind speed can be changed by operating the power SW by the user. It is characterized by the following. FIG. 9 is a time chart for explaining the operation at this time.

When the user presses the halfway rewind SW 111 during shooting (for example, * 1 in FIG. 9), this is transmitted to the main CPU. In response to this, the main CPU drives the film drive motor with a motor drive voltage (Mot voltage) of 5 V to feed the film in the rewind direction at a high speed. The signal indicating the motor drive direction at this time is the rewind direction.

In this case, the perforation signal (WPR) indicating the movement of the fill is not output immediately after the drive of the film is started, but is output after the time until the loosening of the film is removed (blur winding time). Is done.

During the rewinding of the film, for example, at the time indicated by * 2 in the figure, the user turns off the power SW (from turning on the power SW 112 (first operation state) to turning off the second power switch (second operation state).
In this case, the motor driving voltage (Mot voltage) of the film driving motor is changed from 5 V to 3
Change to V. As a result, the film is fed at a low speed, so that the rewind sound is reduced. Further, from this point on, the interval between the perforation signals becomes wide as shown in the figure.

To return to the original film rewind speed, the power switch is turned on again to change the motor drive voltage (Mot voltage) of the film drive motor from 3 V to 5 V, and the film is driven at a high speed. Rewind in.

When the perforation signal is no longer output, the timer for detecting the rewind film end is started. If a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound to the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

FIG. 10 is a diagram showing a processing flow of the main CPU for automatic film rewinding and halfway film rewinding. First, in step S133, a register required for resetting the timer, starting the timer, and processing, RA
Initial settings including initialization of M, interface IC, etc. are performed. In step S135, the state of the power switch 112 is determined. If the power switch 112 is ON, the process proceeds to step S136 to set the motor drive voltage to 5 V. If the power SW 112 is OFF, the process proceeds to step S137 to reduce the motor drive voltage to 3V.
Set to V.

In step S138, the film drive motor is driven in the rewind direction based on the drive voltage set in step S136 or S137. Next, while detecting the perforation signal in step S139, it is determined whether or not the perforation signal has changed (step S140). If the signal has changed, the timer is reset and restarted in step S141 to count. To start. The timer here is used to detect that a predetermined number of perforation signals are not output within a predetermined time.

Next, in step S142, it is determined whether or not the timer count value is equal to or greater than a predetermined value. If the timer count value is less than the predetermined value, the process returns to step S135, and if it is equal to or greater than the predetermined value, the process proceeds to step S143. The timer count value differs between when the film drive motor is driven at 5 V and when it is driven at 3 V.
Second, in the case of 3V drive, for example, it is 10 seconds. The timer count value is switched and set in step S141 according to the voltage for driving the motor.

In step S143, the process waits for a predetermined time or more for the film to move from the position where the perforation signal is detected to the cartridge. This is to confirm that the film has been securely wound on the cartridge. The predetermined time here is also different between the case where the film driving motor is driven at 5V and the case where the film driving motor is driven at 3V. For 5V driving, for example, 10 seconds, and for 3V driving, for example, 20 seconds. The predetermined time is determined in step S143.
Is set by switching according to the voltage for driving the motor.

In the next step S144, the motor for driving the film is stopped, and in step S145, information indicating that the rewinding of the film is completed is stored in the EEPROM 135 of FIG.
And return.

(Third Embodiment) Hereinafter, a third embodiment of the present invention will be described. In the third embodiment, halfway rewind SW1
It is characterized in that the rewinding speed can be changed each time 11 is depressed. The configuration of the third embodiment is basically the same as that of the above-described first embodiment, and a description thereof will be omitted.

First, as a first example of the third embodiment, FIG.
The operation when the automatic rewinding is started after the detection of the film end will be described with reference to FIG. When the first release SW (1RSW) is pressed by the user, photometry is performed,
Distance measurement is performed and focusing operation on the subject is performed.
When the second release SW (2RSW) is pressed, an exposure operation for photographing is performed. After photographing, the film drive motor is driven at a motor drive voltage (Mot voltage) of 5 V to feed the film one frame in the winding direction. The signal indicating the motor driving direction at this time is the winding direction.

A perforation signal (WPR) is output with the movement of the film at this time. When the perforation signal (WPR) is no longer output while the film is being wound after several frames have been taken, the timer for film end detection is started, and a predetermined number of perforations are detected within a predetermined time. If not, it is determined that it is the film end. When the film end is detected, the film drive motor is driven at a motor drive voltage (MOT voltage) of 3 V to feed the film at a low speed in the rewind direction. The signal indicating the motor drive direction at this time is the rewind direction.

During the rewinding of the film, for example, * in FIG.
When the user depresses the halfway rewind SW 111 at the time indicated by 1 (when the halfway rewind SW 111 is switched from OFF (first operation state) to ON (second operation state)), the film drive Motor drive voltage (M
ot voltage) from 3V to 5V. As a result, the rewinding sound is increased, but the film is fed at a high speed. Further, from this point on, the interval between the perforation signals becomes narrow as shown in the figure.

In this state, for example, when the user depresses the intermediate rewind SW 111 again at the point indicated by * 2 in the drawing, the motor drive voltage (Mot) of the film drive motor is changed.
Voltage) from 5V to 3V. As a result, the film is fed at a low speed, but the rewind sound is reduced. Further, from this point on, the interval between the perforation signals becomes wide as shown in the figure.

When the perforation signal is no longer output, time counting by the rewind film end detection timer is started. If a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound into the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

FIG. 12 is a diagram showing a processing flow of the main CPU for automatic film rewinding.

First, at step S233, a register required for resetting the timer, starting the timer, and processing, RA
Initial settings including initialization of M, interface IC, etc. are performed. Next, the motor drive voltage is set to 3 V (step S
234), the film drive motor is driven at a low speed in the rewind direction at the drive voltage (3 V) set at this time (step S235).

Next, the switch state of the halfway rewind SW 111 is detected (step S236). Next, the switch state detected here is compared with the previous switch state (step S237), and the new switch state is stored (step S238).

In step S239, based on the result of the comparison in step S237, the switch state is turned off by the user depressing the intermediate rewind SW 111.
It is determined whether or not F has changed to ON. If the determination here is YES, it is detected whether or not the motor drive voltage is currently set to 5 V (step S240).

If the determination is YES, the flow advances to step S241 to set the motor drive voltage to 3V. If the determination in step S240 is NO, the process proceeds to step S242 to set the motor drive voltage to 5V.

If the determination in step S239 is NO, or after the processing in step S241 or S242, the film drive motor is driven in the rewind direction by the set drive voltage (step S243).

Next, while detecting the perforation signal in step S244, it is determined whether or not the perforation signal has changed (step S245).
If there is a signal change, the timer is reset and restarted in step S246 to start counting. The timer here is used to detect that a predetermined number of perforation signals are not output within a predetermined time.

Next, in step S247, it is determined whether or not the timer count value is equal to or greater than a predetermined value. If the timer count value is less than the predetermined value, the process returns to step S236. If it is equal to or greater than the predetermined value, the process proceeds to step S248. The timer count value differs between when the film drive motor is driven at 5 V and when it is driven at 3 V.
Second, in the case of 3V drive, for example, it is 10 seconds. The timer count value is switched and set in step S246 according to the voltage for driving the motor.

In step S248, the process waits for a predetermined time or more for the film to move from the position where the perforation signal is detected to the cartridge. This is to confirm that the film has been securely wound on the cartridge. The predetermined time here is also different between the case where the film driving motor is driven at 5V and the case where the film driving motor is driven at 3V. For 5V driving, for example, 10 seconds, and for 3V driving, for example, 20 seconds. The predetermined time is switched and set in step S43 according to the voltage for driving the motor.

In the next step S249, the film driving motor is stopped, and in step S250, information indicating that the film rewinding is completed is stored in the EEPROM 135 of FIG.
And return.

Next, as a second example of the third embodiment, FIG.
The operation in the case where the midway rewind SW 111 is depressed during photographing to start the midway rewind will be described with reference to FIG.

When the user presses the halfway rewind SW 111 during shooting (for example, * 1 in FIG. 13), the
Conveyed to. In response to this, the main CPU drives the film drive motor with a motor drive voltage (Mot voltage) of 5 V to feed the film in the rewind direction at a high speed. The signal indicating the motor drive direction at this time is the rewind direction.

In this case, the perforation signal (WPR) indicating the movement of the fill is not output immediately after the start of the driving of the film, but is output after a lapse of time until the loosening of the film is removed (blur winding time). Is done.

During the rewinding of the film, for example, * in FIG.
When the user depresses the halfway rewind SW 111 again at the time indicated by 2 (when the halfway rewind SW is switched from OFF (first operation state) to ON (second operation state))
, The motor drive voltage (Mot voltage) of the film drive motor is changed from 5V to 3V. As a result, the film is fed at a low speed, so that the rewinding sound is reduced. Also,
From this point, the interval between the perforation signals becomes wide as shown in the figure.

Although not shown, if the user subsequently depresses the intermediate rewind SW 111 again, the motor drive voltage (Mot voltage) of the film drive motor is changed from 3V to 5V. This increases the rewinding sound but feeds the film at a high speed. Also, from this point on, the interval between the perforation signals is widened.

When the perforation signal is no longer output, the timer for detecting the rewind film end is started, and when a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound to the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

FIG. 14 is a diagram showing a processing flow of the main CPU for rewinding a film on the way. Steps S333 to S350 here are exactly the same as the processing procedure of FIG. 12 except that the motor drive voltage is set to 5 V in step S334, and thus description thereof will be omitted.

(Fourth Embodiment) Hereinafter, a fourth embodiment of the present invention will be described. The fourth embodiment is characterized in that a dedicated state SW is newly provided to change the rewind speed, and the dedicated state SW includes a lever SW and a toggle S.
Various switches such as W, slide SW, push SW, and rotation SW can be considered.

FIG. 15 is an external view of a camera according to a fourth embodiment of the present invention, and FIG.
FIG. 1B is a top view of the camera, and FIG. 1C is a front view of the camera. Here, a silent slide SW 300 as an operation means is newly provided as a dedicated state SW.
Other SWs are as described with reference to FIG.

FIG. 16 is a diagram showing a configuration of an internal circuit of a camera according to the fourth embodiment. Silent slide SW300
Is the same as FIG. 2 except that is newly added.

The operation when the intermediate rewind SW 111 is depressed during photographing to start the intermediate rewind will be described below with reference to FIG.

When the user presses the midway rewind SW 111 during shooting (for example, * 1 in FIG. 16), the main CPU is pressed.
Conveyed to. In response to this, the main CPU drives the film drive motor with a motor drive voltage (Mot voltage) of 5 V to feed the film in the rewind direction at a high speed. The signal indicating the motor drive direction at this time is the rewind direction.

In this case, the perforation signal (WPR) indicating the movement of the fill is not output immediately after the start of the driving of the film, but is output after the lapse of the time until the looseness of the film is removed (bubble winding time). Is done.

During the rewinding of the film, for example, * in FIG.
When the user presses down the silent slide SW 300 at the time point indicated by 2 (when the silent slide SW 300 is switched from OFF (first operation state) to ON (second operation state)), the motor drive of the film drive motor is performed. Voltage (Mo
t voltage) is changed from 5V to 3V. As a result, the film is fed at a low speed, so that the rewinding sound is reduced. Further, from this point on, the interval between the perforation signals becomes wide as shown in the figure.

To return the film rewind speed to the original speed, if the silent slide SW 300 is depressed again, the motor drive voltage (Mot voltage) of the film drive motor is changed from 3 V to 5 V, and the film is moved at a high speed. Rewind in.

When the perforation signal is no longer output, time counting by the rewind film end detection timer is started. If a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound to the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

(Fifth Embodiment) Hereinafter, a fifth embodiment of the present invention will be described. 18A to 18D are external views of a camera according to the fifth embodiment. FIG. 18A is a side view of the camera, FIG. 18B is a top view of the camera, and FIG. )
FIG. 2 is a front view of the camera. Here is a silent push SW
400 is newly provided as a dedicated state SW. Other SWs are as described above with reference to FIG.

FIG. 19 is a diagram showing the configuration of the internal circuit of the camera according to the fifth embodiment. Silent push SW400
Is the same as FIG. 2 except that is newly added.

The operation when the automatic rewinding is started after the detection of the film end will be described below with reference to FIG. First release SW (1RSW) by user
When is pressed, photometry and distance measurement are performed, a focusing operation is performed on the subject, and a second release SW (2RSW)
When is pressed, an exposure operation for photographing is performed. After shooting,
The film drive motor is driven by a 5V motor drive voltage (Mot
Voltage) to feed the film by one frame in the winding direction. The signal indicating the motor driving direction at this time is the winding direction.

A perforation signal (WPR) is output as the film moves. When the perforation signal (WPR) is no longer output while the film is being wound after several frames have been taken, the timer for film end detection is started, and a predetermined number of perforations are detected within a predetermined time. If not, it is determined that it is the film end. When the film end is detected, the film drive motor is driven at a motor drive voltage (Mot voltage) of 5 V to feed the film in the rewind direction at a high speed. The signal indicating the motor drive direction at this time is the rewind direction.

During the rewinding of the film, for example, * in FIG.
When the user depresses the silent push SW 400 at the time indicated by 1 (when the silent push SW 400 is switched from OFF (first operation state) to ON (second operation state)), the motor drive of the film drive motor is performed. Voltage (Mo
t voltage) is changed from 5V to 3V. As a result, the film is fed at a low speed, so that the rewind sound is reduced. Further, from this point on, the interval between the perforation signals becomes narrow as shown in the figure.

In this state, for example, when the user depresses the silent push switch 400 again at the point indicated by * 2 in FIG. 20, the motor drive voltage (Mot voltage) of the film drive motor is changed from 3V to 5V. This increases the rewind sound, but rewinds the film at high speed. Further, from this point on, the interval between the perforation signals becomes narrow as shown in the figure.

When the perforation signal is no longer output, time counting by the rewind film end detection timer is started. If a predetermined number of perforations are not detected within a predetermined time, the film is completely rewound into the cartridge. Then, the driving voltage of the film driving motor is set to 0 V, and the film driving motor is stopped.

In the first to fourth embodiments, the timer count value of the rewinding film end detection timer is set to be relatively long when the film driving motor is driven at a low speed. When driving at a high speed, film end detection can be optimized by setting it relatively short.

As described above, according to the above-described embodiment, the user can give priority to the rewind speed after starting rewinding (5V drive) without increasing the number of dedicated operation switches, The priority (3V drive) can be selected. Moreover, in this case, since the rewinding is not stopped halfway, the rewinding is continued and the film is rewound to the end of the film, so that the next film can be loaded. Can be provided.

It should be noted that the invention having the following configuration can be extracted from the specific embodiments described above.

(Supplementary Note 1) A film rewinding motor for rewinding the film, a speed changing means for changing the film feeding speed by the film rewinding motor, and an instruction for changing the film feeding speed. When the first switch is ON after the first switch and the film rewinding by the film rewinding motor are started, the speed changing means increases the speed of rewinding the film, A film rewinding device for a camera, comprising: control means for reducing the speed at which the film is rewound by the speed changing means when one switch is off.

(Supplementary Note 2) The apparatus further includes film feeding means for winding up the film after photographing, and film end detecting means for detecting the end of the film, and the control means controls the film feeding by the film feeding means. When the film end is detected by the film end detection, the film feeding is stopped, and the film is rewound by the film rewinding motor. When the first switch is turned on after the start of the rewinding, The rewinding speed of the film is increased by the speed changing means, and when the first switch is off, the rewinding speed of the film is reduced by the speed changing means. Camera film rewinding device.

(Supplementary note 3) The film rewinding device for a camera according to supplementary note 2, wherein the feeding speed at the initial stage of rewinding is a low speed.

(Supplementary Note 4) The film rewinding means for giving an instruction to rewind the film on the way is further provided, and the control means activates the film rewinding motor by the means for rewinding the film to wind the film. In the process of rewinding the film, if the first switch is turned on after the start of rewinding, the speed changing means speeds up the rewinding of the film, and if the first switch is off, 3. The film rewinding device for a camera according to claim 1, wherein the speed of rewinding the film is reduced by the speed changing means.

(Supplementary Note 5) The film rewinding device for a camera according to Supplementary Note 4, wherein the initial feeding speed is a high speed.

(Supplementary note 6) The first switch is a state switch that maintains a set state, and is further characterized in that the first switch is a state switch that maintains a set state.
6. The film rewinding device for a camera according to any one of Supplementary Note 5 to Supplementary Note 5.

(Supplementary Note 7) The film rewinding device for a camera according to supplementary note 6, wherein the first switch is also used as a power switch of the camera.

(Supplementary Note 8) A film rewinding motor for rewinding the film, speed changing means for changing the film rewinding speed by the film rewinding motor, and an instruction for changing the film feeding speed are provided. After the start of film rewinding by the second switch and the film rewinding motor, every time the second switch is turned on, the speed changing means speeds up or slows down the film rewinding. A film rewinding device for a camera, comprising: control means for switching a drip to an alternate.

(Supplementary Note 9) The apparatus further comprises film feeding means for winding up the film after photographing, and film end detecting means for detecting the end of the film, wherein the control means controls the film feeding by the film feeding means. When the film end is detected by the film end detecting means, the film feeding is stopped and the film is rewound by the film rewinding motor. In the automatic film rewinding, the second switch is turned on after the start of rewinding. 9. The film rewinding device for a camera according to claim 8, wherein the speed changing means switches the speed at which the film is rewound faster or slower to alternate every time.

(Supplementary note 10) The film rewinding device for a camera according to supplementary note 9, wherein the initial feeding speed is low.

(Supplementary Note 11) Further provided is a midway rewinding means for giving an instruction to rewind the film halfway.
In the film rewinding process in which the motor for film rewinding is started by the intermediate rewinding device to rewind the film, the control unit changes the speed every time the second switch is turned on after the start of rewinding. 10. The film rewinding device for a camera according to claim 8 or 9, wherein the rewinding speed of the film is increased or decreased by means of an alternate.

(Supplementary Note 12) The film rewinding device for a camera according to supplementary note 11, wherein the feeding speed at the initial stage of rewinding is a high speed.

(Supplementary note 13) The film rewinding device for a camera according to any one of Supplementary notes 8 to 12, wherein the second switch is a push switch.

(Supplementary note 14) The film rewinding device for a camera according to supplementary note 13, wherein the second switch also functions as a midway rewinding switch of the camera.

(Supplementary Note 15) Film movement detecting means for detecting the movement of the film and outputting a movement signal, and the film rewinding after a predetermined time from the output of the movement signal from the film movement detecting means at the time of rewinding. Timer means for stopping the driving of the motor for
15. The film rewinding device for a camera according to any one of supplementary notes 1 to 14, wherein a timer value is changed in accordance with a feeding speed of the film.

(Supplementary Note 16) At least two types of timer values, a long time and a short time, are provided. When the feeding speed is high, the value set in the timer is set to a short timer value. When the feeding speed is low, the timer is set. 16. The film rewinding device for a camera according to claim 15, wherein the value set in (1) is a long timer value.

(Supplementary note 17) Any one of supplementary notes 1 to 16, wherein the speed changing means changes the film feeding speed by changing a driving voltage applied to the film rewinding motor. 4. The film rewinding device for a camera according to claim 1.

[0161]

According to the present invention, it is possible to incorporate both the user's intention to rewind quietly and the user's intention to rewind quickly even if the sound is loud. It is possible to prevent an accident that the back cover is accidentally opened during rewinding and the film is spoiled.

[Brief description of the drawings]

FIG. 1 is an external view of a camera according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of an internal circuit of the camera according to the first embodiment.

FIG. 3 is a view showing a state in which a back cover 101 of the camera is opened.

FIG. 4 is a flowchart (part 1) for describing a processing operation by a main CPU 120 on the camera body side;
It is.

FIG. 5 is a flowchart for explaining a processing operation by a main CPU 120 on the camera body side (part 2);
It is.

FIG. 6 is a flowchart (part 3) for describing the processing operation by the main CPU 120 on the camera body side;
It is.

FIG. 7 is a flowchart for explaining the operation of the first embodiment of the present invention.

FIG. 8 is a time chart for explaining the operation of the first example of the second embodiment of the present invention.

FIG. 9 is a time chart for explaining an operation of a second example of the second embodiment of the present invention.

FIG. 10 is a diagram showing a processing flow of a CPU for automatic film rewinding and halfway film rewinding.

FIG. 11 is a time chart for explaining the operation of the first example of the third embodiment of the present invention.

FIG. 12 is a diagram showing a processing flow of a CPU for automatic film rewinding.

FIG. 13 is a time chart for explaining the operation of the second example of the third embodiment of the present invention.

FIG. 14 is a diagram showing a processing flow of a CPU for rewinding a film in progress.

FIG. 15 is an external view of a camera according to a fourth embodiment of the present invention.

FIG. 16 is a diagram illustrating a configuration of an internal circuit of a camera according to a fourth embodiment of the present invention.

FIG. 17 is a diagram for explaining the operation of the fourth embodiment of the present invention.

FIG. 18 is an external view of a camera according to a fifth embodiment of the present invention.

FIG. 19 is a diagram illustrating a configuration of an internal circuit of a camera according to a fifth embodiment of the present invention.

FIG. 20 is a diagram for explaining the operation of the fifth embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 strobe light emitting unit 2 display unit 3 shooting mode setting SW 4 release SW 5 zoom up / down SW 6 shooting lens 111 halfway rewind SW 112 power SW 120 main CPU 300 silent slide SW 400 silent push SW

Claims (5)

    [Claims]
  1. A film rewinding device for rewinding a film loaded in a camera, comprising: a film rewinding device for rewinding the film; a first operation state and a second operation state. Switchable operating means; and after the film rewinding means starts rewinding the film, the operating means switches from the first operating state to the second operating state.
    And a control means for changing a rewind speed by the film rewind means when the operation state is switched to.
  2. 2. A film rewinding device for a camera for rewinding a film loaded in a camera, comprising: a film feeding means for winding an exposed film; a film end detecting means for detecting an end of the film; Film rewinding means for rewinding the film; operation means capable of switching between a first operation state and a second operation state; and film end detection means during film winding by the film feeding means. When the end of the film is detected, winding of the film is stopped, and after the film rewinding unit starts rewinding the film, the operating unit is switched from the first operating state to the second operating state. Control means for changing a rewind speed by the film rewind means. Rewinding device.
  3. 3. A rewinding operation means for rewinding the film on the way, wherein the control means is configured to rewind the film on the way by operating the rewinding operation means. 3. The film rewinding device according to claim 1, wherein the rewinding speed by the film rewinding means is increased.
  4. 4. A film rewinding device for a camera for rewinding a film loaded in a camera, comprising: a film feeding means for winding an exposed film; a film end detecting means for detecting an end of the film; Film rewinding means for rewinding the film, operation means capable of switching between a first operation state and a second operation state, and intermediate rewinding operation means for rewinding the film halfway. While the film is being wound by the film feeding means, when the film end detecting means detects the end of the film, the winding of the film is stopped, and the end of the film is detected by the film end detecting means or the halfway winding is performed. After the operation of the rewinding operation means, the rewinding of the film by the film rewinding means starts, the operation means 1
    Control means for changing the rewind speed by the film rewind means when the operation state is switched from the operation state to the second operation state.
  5. 5. The film rewinding apparatus according to claim 1, wherein said operation means is a power switch of a camera.
JP2000143705A 2000-05-16 2000-05-16 Film rewinding device for camera Withdrawn JP2001324745A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101006535B1 (en) 2001-10-30 2011-01-07 가부시키가이샤 히타치세이사쿠쇼 Plasma display device, luminescent device and image and information display system using the same
JP2011150064A (en) * 2010-01-20 2011-08-04 Hitachi Consumer Electronics Co Ltd Projector apparatus and method of controlling opening/closing of projection mirror in the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101006535B1 (en) 2001-10-30 2011-01-07 가부시키가이샤 히타치세이사쿠쇼 Plasma display device, luminescent device and image and information display system using the same
JP2011150064A (en) * 2010-01-20 2011-08-04 Hitachi Consumer Electronics Co Ltd Projector apparatus and method of controlling opening/closing of projection mirror in the same

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