JPH1048721A - Electronic instrument and camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage to a film and to inform a photographer of that an abnormal operation is executed. SOLUTION: In this case the photographer erroneously operates an opening/ closing member, opens a cartridge chamber during the no-load winding or unwinding of the film and a film light shielding window is closed with the fact, the lost feeding or unwinding of the film is immediately stopped (#404→#420) and simultaneously a warning is issued (#421 and #422).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus and a camera using a recording medium such as a film housed in a cartridge having a light shielding window.

[0002]

2. Description of the Related Art A film cartridge containing a film having a magnetic recording portion (hereinafter simply referred to as a cartridge) is provided with a film light-shielding window, and the film outlet is usually closed by the film light-shielding window. . Therefore, when a cartridge of this type is loaded into a camera, the camera first opens the film light-shielding window of the cartridge, and then starts idle film feeding. When the photographing of the film is completed, the film is rewound, and when the rewound is completed, the film light shielding window of the cartridge is closed.

If the film light-shielding window is electrically opened and closed as described above, the size and cost of the camera are increased.

Therefore, there has been proposed a camera which opens and closes a film light shielding window of a cartridge in conjunction with an operation member for opening and closing a cartridge chamber of a camera. That is, when the opening and closing member of the cartridge is closed, the film light shielding window is opened, and when the opening member of the cartridge chamber is opened, the film light shielding window is closed.

Further, in recent cameras, the operation sound during rewinding or idle feeding of a film becomes extremely quiet. It is so quiet that it is impossible to judge it.

[0006]

As described above, in the conventional magnetically recordable camera, the operation sound during rewinding or idle feeding of the film is extremely quiet. Despite this, the photographer sometimes mistakenly finishes rewinding or idle feeding and tries to remove the cartridge.

When the opening and closing member of the cartridge chamber is to be opened in order to take out the cartridge, the film light shielding window of the cartridge is closed as described above. For this reason, for example, if the film light-shielding window of the cartridge is closed by the opening / closing member of the cartridge chamber during film rewinding, the film is held down by the film light-shielding window. There is a disadvantage that there is a risk of being scratched.

(Object of the Invention) A first object of the present invention is to provide an electronic apparatus which can prevent a recording medium from being damaged and can notify a user of an abnormal operation.

A second object of the present invention is to provide an electronic device which can continue to drive a recording medium without requiring a user to perform extra operations.

A third object of the present invention is to provide a camera which can prevent a film from being damaged and can notify a photographer of an abnormal operation.

A fourth object of the present invention is to provide a camera capable of continuing to drive the film without requiring a photographer to perform an extra operation.

[0012]

According to the first aspect of the present invention, a light shielding window of a loaded cartridge is opened and closed in conjunction with an opening and closing member of a cartridge chamber. In the electronic device having such a structure, when the light shielding window of the cartridge is closed while the recording medium is being driven, the driving of the recording medium is interrupted and a warning to that effect is issued.

More specifically, if the user accidentally operates the opening / closing member to open the cartridge chamber while the recording medium is being driven, and the light-shielding window is closed in conjunction with this operation, the recording medium is immediately closed. Driving is stopped and a warning is issued.

Further, in order to achieve the second object,
According to a second aspect of the present invention, when the light shielding window of the cartridge is opened within a predetermined time after the driving of the recording medium is interrupted, the driving of the recording medium is restarted.

More specifically, when the user who noticed the warning operates the cartridge chamber within a predetermined time to open the light-shielding window, the drive of the recording medium is resumed after the interruption. I have to.

Further, in order to achieve the third object,
According to a third aspect of the present invention, there is provided a camera having a structure in which a film light shielding window of a loaded film cartridge is opened and closed in conjunction with an opening / closing member of a cartridge chamber. When the film light-shielding window of the film cartridge is closed, the film drive is interrupted and a warning to that effect is issued.

Specifically, for example, a driving means for driving a film having a magnetic recording portion, a film light shielding window closing detecting means for detecting the closing of the film light shielding window of the film cartridge while the film is being driven, and the film light shielding window When the closing of the film light-shielding window is detected during the driving of the film by the closing detecting means, an interrupting means for interrupting the film driving, and the film light-shielding window closing detecting means, the film light-shielding window is closed during the driving of the film. When the close is detected, a warning means for issuing a warning is provided, and the photographer mistakenly operates the opening / closing member to open the cartridge chamber during the idle feeding or rewinding of the film. If the film light-shielding window is closed, the film feed or rewinding is immediately stopped and a warning is issued.

Further, in order to achieve the fourth object,
The present invention according to claims 4 and 6 to 8 is configured to restart the film driving when the film light shielding window is opened within a predetermined time after the film driving is interrupted.

More specifically, for example, within a predetermined time after the idle feeding or rewinding of the film having the magnetic recording portion is interrupted,
When the film light-shielding window is opened, the structure provided with a control means for restarting the film idle feeding and rewinding,
If the photographer who noticed the warning operates the cartridge chamber within a predetermined time to open the light-shielding window of the film, the idle feeding or rewinding of the film is resumed from the interrupted state.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a structural view showing a main part according to an embodiment when the present invention is applied to a single-lens reflex camera, and FIGS. 2A and 2B are top views of the single-lens reflex camera of FIG. FIG. 3 is a view showing the inside of the viewfinder of the single-lens reflex camera of FIG.

In these figures, reference numeral 1 denotes a photographing lens, which is shown by two lenses for convenience, but is actually composed of more lenses. Reference numeral 2 denotes a main mirror which is inclined to the photographing optical path or retreated depending on the state of observation of the subject by the finder system and the state of photographing the subject image. Reference numeral 3 denotes a sub-mirror which reflects a light beam transmitted through the main mirror 2 toward a later-described focus detection device 6 below the camera body. Reference numeral 4 denotes a shutter, and reference numeral 5 denotes a film having a magnetic recording unit.

Reference numeral 6 denotes a focus detection device, which is a field lens 6a and reflection mirrors 6b, 6 arranged near the image plane.
c, a secondary imaging lens 6d, an aperture 6e, a sensor 6f, and the like. Focus detection device 6 in the present embodiment
Uses a well-known phase difference method, and as shown in FIG.
A plurality of areas (three places) in the observation screen (in the viewfinder field) are set as focus detection areas (hereinafter, referred to as distance measurement points), and the focus points can be detected.

Reference numeral 7 denotes a focusing plate arranged on a predetermined image forming plane of the photographing lens 1, and 8 denotes a pentaprism for changing a finder optical path. Reference numerals 9 and 10 denote an imaging lens and a photometric sensor for measuring the brightness of the subject in the observation screen, respectively. The imaging lens 9 conjugates the focus plate 7 and the photometric sensor 10 via a reflection optical path in the pentaprism 8. Is related to

Reference numeral 11 denotes an eyepiece disposed behind the exit surface of the pentaprism 8, and is used for observing the focus plate 7 with the photographer's eye 15. 21 is a high-brightness superimpose LED that can be visually recognized even in bright subjects.
The emitted light is reflected by the main mirror 2 through the light projecting prism 22 and is bent in the vertical direction by the micro prism array 7a provided on the display unit of the focus plate 7, so that the penta prism 8 and the eyepiece 11 are moved. And reaches the photographer's eye 15.
Therefore, the micro prism array 7a is formed in a frame shape at a plurality of positions (distance measuring points) corresponding to the focus detection area of the focus plate 7, and three superimposing LEDs 21 (each of which is an LED) are respectively formed. -L, LED-C, LED
-R). As a result, as can be seen from the finder field shown in FIG. 3, each of the distance measurement point marks 200, 201, and 202 shines in the finder field, and the focus detection area (distance measurement point) can be displayed. (Hereinafter, this is called superimposed display).

Reference numeral 23 denotes a field mask for forming a finder field area. Reference numeral 24 denotes a finder LCD for displaying photographing information outside the finder field of view.
-LED) 25. This LCD2
The light transmitted through 4 is guided into the finder visual field by the triangular prism 26 and is displayed outside the finder visual field as indicated by 207 in FIG. 3 so that the photographer can know the photographing information. Reference numeral 31 denotes an aperture provided in the photographing lens 1; 32, an aperture driving device including an aperture driving circuit 111 described later;
Is a lens driving motor, 34 is a lens driving member composed of a driving gear and the like, 35 is a photocoupler and is a lens driving member 34.
The rotation of the pulse plate 36 that is linked to the rotation of the lens is detected and transmitted to the lens focus adjustment circuit 110. The focus adjustment circuit 110 drives the lens driving motor by a predetermined amount based on this information and the information on the lens driving amount from the camera side, and moves the photographing lens 1 to a focusing position. Reference numeral 37 denotes a mounting contact that serves as an interface between a known camera and a lens.

In FIG. 2, reference numeral 41 denotes a release button.
Reference numeral 42 denotes a monitor LCD as an external monitor display device, which comprises a fixed segment display section 42a for displaying a predetermined pattern and a 7-segment display section 42b for displaying a variable numerical value.

Reference numeral 43 denotes a cartridge chamber opening / closing knob.
An operation member for taking a cartridge in and out of the cartridge chamber. When the cartridge is in the cartridge chamber, the film light shielding window of the cartridge is opened and closed in conjunction with the cartridge chamber opening / closing knob 43. That is, the cartridge chamber opening / closing knob 4
When the cartridge 3 is closed, the film light shielding window of the cartridge is opened, and when the cartridge chamber opening / closing knob 43 is opened, the film light shielding window of the cartridge is closed. 44 is a rewind button and 45 is an electronic dial.

The other operating members are not particularly necessary for understanding the present invention and will not be described.

FIG. 4 is a block diagram showing an electric configuration built in the camera of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals.

A central processing unit (hereinafter, referred to as a CPU) 100 in a microcomputer built in the camera body.
Includes a photometry circuit 102, an automatic focus detection circuit 103, a signal input circuit 104, an LCD drive circuit 105, an LED drive circuit 106, a shutter control circuit 107, and a motor control circuit 1.
08, a magnetic recording circuit 109, a film detection circuit 111,
The clock circuit 113 is connected. Further, a focus adjustment circuit 115 and an aperture driving circuit 116 disposed in the taking lens
Means that a signal is transmitted through the mount contact 37 shown in FIG.

The photometric circuit 102 amplifies the output from the photometric sensor 10, performs logarithmic compression and A / D conversion, and sends the result to the CPU 100 as luminance information of each sensor. The photometric sensor 10 has an SPC-A0 for measuring the area A0 including the left ranging point 200 in the finder visual field shown in FIG. 3 and an SPC-A for measuring the area A1 including the central ranging point 201 in the finder visual field. A1, SPC-A2 for measuring the area A2 including the right distance measuring point 202 in the finder visual field, SPC-A3 for measuring the area A3, and S for measuring the area A4.
PC-A4 and SPC-photometering other area A5
A5 consists of six photodiodes.

As shown in FIG. 3, the line sensor 6f shown in FIG. 4 has three sets of line sensors CCD-L, CCD-C, CC corresponding to the three distance measuring points 200 to 202 on the screen.
It is a known CCD line sensor composed of DR. The automatic focus detection circuit 103 A / D converts the voltage obtained from the line sensor 6f and sends the voltage to the CPU 100. The signal input circuit 104 is for inputting a state of an operation member or the like of the camera.
The switch connected to is described below.

SW1 is a switch which is turned on by the first stroke of the release button 41 to start photometry, AF (auto focus), etc., and SW2 is a release switch which is turned on by the second stroke of the release button.

The switch SWCTCL is turned on and off by opening and closing the cartridge chamber opening / closing knob 43. The switch SWCTCL is turned on when the cartridge chamber opening / closing knob 43 is open, and is turned off when the cartridge chamber opening / closing knob 43 is closed. Further, as described above, since the film light shielding window is opened / closed in conjunction with the cartridge chamber opening / closing knob 43, the switch SWCTC is used.
It is possible to detect whether the film light-shielding window is open or closed by turning L on and off.

SWCTIN is a switch for detecting whether or not there is a cartridge in the cartridge chamber, and is turned off when there is a cartridge, and turned on when there is no cartridge. SWREW is a switch which is turned on when the rewind button 44 is pressed. When the switch SWREW is turned on by pressing the rewind button 44, rewinding of the film is started.

SW-DIAL1 and SW-DIAL2 are
A dial switch provided in the electronic dial 45;
It is input to the up / down counter of the signal input circuit 104, and counts the amount of rotation click of the electronic dial 45.

The signals of the various switches described above are input to a signal input circuit 104, and the CPU 100
Sent to.

The LCD driving circuit 105 is a well-known circuit for driving and driving a liquid crystal display element LCD.
In accordance with the signal from 100, the display of the aperture value, the shutter time, the set photographing mode, and the like can be simultaneously displayed on both the monitor LCD 42 and the finder LCD 42. Further, the LCD drive circuit 105 includes a circuit for driving a sounding body (not shown), and in accordance with a signal from the CPU 100, a focus sound at the time of focusing, a warning sound when the release operation according to the present invention is prohibited, and the like. Sounds.

The LED driving circuit 106 is a lighting LED.
(F-LED) 25 and LED 21 for superimpose
Is turned on and off. The shutter control circuit 107
Controls the magnet MG1 for running the front curtain and the magnet MG2 for running the rear curtain when energized,
Is exposed to a predetermined amount of light. The motor control circuit 108
Is for controlling the motor M1 and the main mirror 2 for winding and rewinding the film 5, and the motor M2 for charging the shutter 4. The magnetic recording circuit 1
Reference numeral 09 controls the magnetic head 110 for writing photographing information on the film 5.

The film detecting circuit 111 detects the feeding speed of the film 5 and the position of the film during the film feeding from the signal from the photo sensor 112. When the predetermined signal is output from the photo sensor 11, it can be detected that the film has been fed to the magnetic recording unit provided on the film 5, and the photo sensor 11
When a predetermined signal is output from 2, the completion of feeding of one frame can be detected.

The shutter control circuit 107, motor control circuit 108, magnetic recording circuit 109, film detection circuit 1
A series of release sequences is operated by 11 or the like.

The clock circuit 113 stores the year, month,
The clock circuit 113 is used to record information such as date, hour, minute, and second in the magnetic recording unit. The clock circuit 113 is read by a signal from the CPU 100.
It is corrected according to the signal from.

FIGS. 5A and 5B show the monitor LC.
D42 and the contents of all display segments of the LCD 24 in the finder.

In FIG. 5 (A), a known display mode or the like is provided in the fixed display segment section 42a. The fixed display segment section 42a also includes an indication of the presence or absence of a film. 7-segment part 4 for variable numerical value display
2b is a 4-digit 7-segment 6 indicating the shutter time.
2. It is composed of a 2-digit 7-segment 63 for displaying the aperture value, a decimal point 64, a limited numerical value display segment 65 for displaying the number of films, and a 1-digit 7-segment 66.

In FIG. 5B, reference numeral 72 denotes an AE lock mark, reference numerals 73, 74, and 75 denote the same display segment as the shutter time display and aperture value display, reference numeral 76 denotes an exposure correction setting mark, and reference numeral 77 denotes a flash full state. A mark 79 is a focus mark indicating the focus state of the taking lens.

FIG. 6 shows the shape of the film 5 having a magnetic recording portion.

Reference numerals 150 and 151 denote perforation holes. When the film is fed, the holes are recognized by a photoreflector to check the feeding state. Fifteen
Reference numerals 2 and 153 denote photoreflectors (corresponding to 112 in FIG. 4). In this embodiment, two photoreflectors are used. Reference numeral 154 denotes a magnetically recordable portion (magnetic recording portion) for printing the magnetic information recorded here and utilizing it at the time of development. Fifteen
5 is the actual photosensitive member of the film.

Next, the operation of the magnetically recordable camera will be described with reference to the flowcharts of FIGS.

When the battery is inserted into the camera, the power of the camera is turned on, and the CPU 100 starts the operation from step # 101 through step # 100. [Step # 101] Flags required for camera control,
Initialize variables and so on. [Step # 102] A subroutine "film drive determination" is called. In this subroutine "film drive determination", it is determined whether or not to perform the film idle feeding and film rewinding operation. If necessary, the film idle feeding and film rewinding operation are executed. The details of the subroutine "film drive determination" will be described later. [Step # 103] It is determined whether the first stroke of the release button 41 is performed and the switch SW1 is turned on. If the switch SW1 is turned off, step # 1 is executed.
02, and the same operation is repeated thereafter.

In step # 103, it is determined that the switch SW1 has been turned on.
Proceed to 104. [Step # 104] Here, a photometric operation is performed. That is, a photometric value is obtained from the luminance of a plurality of regions (see FIG. 3) within the photographing range, and the shutter time and aperture value are calculated from the photometric value and the film sensitivity. [Step # 105] Here, a focus detection operation is performed.
That is, the defocus amount of each ranging point shown in FIG. 3 is obtained, the main subject is estimated, and the current focus state is detected from the defocus amount of the main subject. [Step # 106] If the current focus state is the in-focus state by the focus detection executed in step # 105, the process proceeds to step # 107. If not, the process proceeds to step # 110. [Step # 107] A display for notifying the photographer that focus has been achieved is performed.

Specifically, the CPU 100 sends a signal to the LCD drive circuit 105 to turn on the focus mark 79 of the LCD 24 in the finder. Further, the CPU 100 sends a signal to the LCD drive circuit 105 to emit a focusing sound.

Further, when focusing is performed, one of the focus detection point marks 200 to 202 in the finder is lit for a certain period of time to notify the photographer of the focused photometry point. CPU for this
100 sends a signal to the LED drive circuit to turn on the superimposing LED corresponding to the selected ranging point for 50 ms.

If the in-focus state is not established in step # 105, the process proceeds to step # 110 as described above. [Step # 110] Here, since the current focus state is not the in-focus state, a process of driving the lens is performed.
U100 sends a signal to the lens focus adjustment circuit 110 to drive the photographing lens 1 by a predetermined amount. Then, step # 10
Proceed to 8.

The following step # 108 and step # 1
At 09, a determination for shifting to the release operation is made. [Step # 108] Here, when the camera is not in the in-focus state, a determination is made so as not to shift to the release operation even if the release button 41 is pressed. Hereinafter, the same operation is repeated. If it is in focus, the process proceeds to step # 109. [Step # 109] It is determined whether or not the second stroke of the release button 41 is performed and the switch SW2 is on. If the switch SW2 is on, the process proceeds to step # 111. If the switch SW2 is off, the process proceeds to step # 102. Return. [Step # 111] Jump to “Release” described later to perform the release operation.

Next, a subroutine "film drive determination"
Will be described with reference to the flowchart of FIG.

In this subroutine "film drive determination", a determination and execution for performing the film idle feeding and the film rewinding are performed. [Step # 201] It is determined whether or not there is a cartridge in the cartridge chamber. If there is a cartridge in the cartridge chamber and the switch SWCTIN is turned off, the process proceeds to step # 202; otherwise, the process proceeds to step # 20.
Go to 7. [Step # 202] Cartridge chamber opening / closing knob 43
Is closed, that is, when the switch SWCTCL changes from on to off, it is determined that the cartridge has been loaded, and the step #
Proceed to step 206, otherwise proceed to step # 203. [Step # 203] It is determined whether or not shooting of all frames has been completed. If it has been completed, the process proceeds to step # 205 to automatically perform rewinding, and if not, the process proceeds to step # 204. [Step # 204] If the rewind button 44 is pressed and the switch SWREW is on, the process proceeds to step # 205 to cause the film to be rewound, and otherwise proceeds to step # 207. [Step # 205] Subroutine "rewind" is called. In this subroutine "rewind", a film rewind operation is performed, and the details of the subroutine "rewind" will be described later.

In step # 202, the cartridge chamber opening / closing knob 43 is closed and the switch SWCTC is turned on.
If L changes from on to off and it is determined that a cartridge has been loaded, the process proceeds to step # 206 in order to cause the film to be skipped as described above. [Step # 206] Calls a subroutine "jump feed". In this subroutine "jump feed", a film jump operation is performed. The details of the subroutine "jump feed" will be described later. [Step # 207] This subroutine "Film drive determination" ends, and the process returns to the main routine shown in FIG.

Next, the "release" sequence will be described with reference to the flowchart of FIG. [Step # 300] Release control is started. [Step # 301] As a preparation for exposing the film 5 to light, first, the main mirror 2 is raised. For this reason, the CPU 100 sends a signal to the motor control circuit 109 to start driving the motor M2 in the normal rotation direction. Thereafter, the phase signals CMSP1 and CMSP2 of a phase substrate (not shown) are continuously monitored, and when the phase signals reach the mirror-up position, a signal is sent to the motor control circuit 109, and the motor M2
Stop driving. Further, a signal is sent to an aperture driving device 32 including the aperture driving circuit 11, and the aperture 31 is stopped down by a predetermined amount. [Step # 302] Here, the film 5 is exposed.

More specifically, first, the CPU 100 sends a signal to the shutter control circuit 108 to energize the MG 1 and open the front curtain of the shutter 4. The aperture value of the aperture 31 and the shutter speed of the shutter 4 are determined from the exposure value detected by the photometric circuit 102 and the sensitivity of the film 5. After a lapse of a predetermined shutter time, the shutter control circuit 108
, The MG2 is energized, and the rear curtain of the shutter 4 is closed. Thus, the exposure of the film 5 is completed. [Step # 303] When the exposure of the film 5 is completed as described above, the main mirror 2 is lowered and the shutter is charged. For this reason, the CPU 100 sends a signal to the motor control circuit 109 to start driving the motor M2 in the normal rotation direction. Thereafter, a phase signal CMSP of a phase substrate (not shown)
1, when the CMSP2 is continuously monitored and the phase signal reaches the mirror down position, a signal is sent to the motor control circuit 109 to stop driving the motor M2. Further, a signal is sent to the aperture driving device 32 including the aperture driving circuit 11 to return the aperture 31 to the open state. [Step # 304] Here, the film 5 is wound up. For this purpose, the CPU 100 controls the motor control circuit 109
To start driving the motor M1 in the normal rotation direction. Further, a signal is sent to the film detection circuit 111 so that a signal from the photo sensor 112 can detect a film position during film feeding. [Step # 305] The signal from the photo sensor 112 is continuously monitored, and the process stands by until the film position during film feeding becomes the magnetic recording unit. Thereafter, when the magnetic recording unit is fed to a predetermined position, the process proceeds to step # 306. [Step # 306] Since the magnetic recording unit has been fed to a predetermined position, magnetic recording is started. Here is 1 bit
Write magnetic data. [Step # 307] Here, it is determined whether or not a predetermined amount of information has been magnetically recorded. If the predetermined amount of information has not been recorded, the process returns to step # 306 to continue the magnetic recording. Thereafter, when it is determined that a predetermined amount of recording has been performed, the process proceeds to step # 308. [Step # 308] Here, the process stands by until the film winding for one frame is completed. [Step # 309] The film winding for one frame is completed. For this purpose, the CPU 100 controls the motor control circuit 109
To stop the motor M1. Further, 1 is added to the variable FRAMER indicating the number of shots.

Thereafter, the release operation ends, and the flow returns to step # 102 in FIG.

Next, the details of the subroutine "idling" will be described with reference to the flowchart of FIG. [Step # 401] Prior to the idle feeding of the film, the flag ALNG is cleared. The flag ALNG is a flag indicating that the idle feeding has failed. [Step # 402] A display for notifying that the idle feeding is being performed is performed. For this purpose, the CPU 100 sends a signal to the LCD drive circuit 105 to display the film mark and the number display "0" on the monitor LCD 42. [Step # 403] The idle feeding of the film is started. For this purpose, the CPU 100 sends a signal to the motor control circuit 109 to drive the motor M1 in the normal rotation direction. [Step # 404] Here, it is determined whether or not the film light shielding window is closed during the idle feeding of the film. This is determined by whether the cartridge chamber opening / closing knob 43 is opened and the switch SWCTCL is turned on. As a result, if the film light shielding window is closed, the process proceeds to step # 420; otherwise, the process proceeds to step # 405.
Proceed to.

Here, since the film light shielding window is not closed, the process proceeds to step # 405. [Step # 405] Continue to monitor the signal from the photo sensor 112, and if the film has been fed to the first frame, proceed to step # 406; otherwise, return to step # 404 and repeat the same operation. [Step # 406] Since the first frame has been sent,
Stop the idle feeding of the film. For this purpose, the CPU 100
Sends a signal to the motor control circuit 109 to stop the motor M1. [Step # 407] Since the first frame has been sent,
A variable FRAMER indicating the number of shots is set to 1. [Step # 408] The display for informing that the film is being fed in the idle state is cancelled. Because of this, CPU10
0 sends a signal to the LCD drive circuit 105 to display the film mark and the number of films on the monitor LCD 42. Thereafter, the process proceeds to step # 440.

If it is determined in step # 404 that the film light shielding window has been closed, the process proceeds to step # 420 as described above. [Step # 420] Here, since the light-shielding window of the film is closed during the idle feeding of the film 5, this idle feeding of the film is immediately stopped. For this purpose, the CPU 100
A signal is sent to the motor control circuit 109 to stop the motor M1. [Step # 421] Here, a display is performed to inform that the film light shielding window has been closed during film driving. For this purpose, the CPU 100 sends a signal to the LCD drive circuit 105 to display a character on the variable numerical value display 7-segment portion 42b of the monitor LCD 42. The display form at this time is shown in FIG.

The blinking of CLOSE in FIG. 12 is a warning that the cartridge chamber opening / closing knob 43 should be closed, that is, the film light-shielding window should be opened because of an abnormal operation. [Step # 422] Here, a warning sound is output that the operation is abnormal. For this reason, the CPU 100 sends a signal to the LCD drive circuit 105 and starts to sound a warning sound. [Step 423] Cartridge chamber opening / closing knob 43
Is open and the switch SWCTCL is in the on state. If it is on, that is, if the film light shielding window is kept closed, the process proceeds to step # 424. [Step # 424] It is determined whether two seconds have elapsed since the motor was stopped in step # 420, and if not, the flow returns to step # 423.

As described above, until two seconds elapse after the motor is stopped, steps # 423 → # 424 → # 423
…… is repeated, but during this time the switch SW
If it is determined that the CTCL is off, that is, that the film light shielding window has been opened, the process proceeds to step # 425. [Step # 425] Here, the CPU 100
A signal is sent to the D drive circuit 105 to stop sounding the warning sound. [Step # 426] The display for notifying that the film light-shielding window has been closed during the film driving performed in step # 421 is cancelled. Because of this, CPU10
0 sends a signal to the love LCD drive circuit 105 to display the film mark and the number of films on the monitor LCD 42. [Step # 427] In order to restart the film idle feeding, the CPU 100 sends a signal to the motor control circuit 109 to drive the motor M1 in the normal rotation direction. Then, the process returns to step # 404.

Steps # 423 → # 424 → # 42
While repeating step 3 ..., stop the motor and then
If it is determined that seconds have elapsed, the process proceeds to step # 430 as described above. [Step # 430] The CPU 100 sends a signal to the LCD drive circuit 105 to stop emitting a warning sound. [Step # 431] The flag ALNG indicating that the idle feeding has failed is set. [Step # 432] Cartridge chamber opening / closing knob 43
Is closed, and waits until the switch SWCTCL is turned off. [Step # 433] A display for notifying that the film misfeed has failed is displayed. For this purpose, the CPU 100
Sends a signal to the LCD drive circuit 105 to
The film mark of the CD 42 and the number display “0” are blinked. [Step # 434] The flow waits until the rewind button 44 is pressed and the switch SWREW is turned on. [Step # 435] In order to rewind the film, a subroutine "rewind" is called. The details of the subroutine "rewind" will be described later. [Step # 440] This subroutine "idling" is completed, and the process returns to the main routine of FIG.

As described above, if it is determined in step # 404 that the film light shielding window has been closed during the idle feeding of the film, the process proceeds to step # 420, where the idle feeding of the film is immediately interrupted. Followed by step # 42
From step 1 to step # 422, a warning is given that the film light shielding window has been closed.

Therefore, it is possible to prevent the continuous feeding while the film 5 is sandwiched between the film light shielding windows and to prevent the film surface from being damaged, and to notify the photographer of this abnormal situation.

In the next steps # 423 to 427, if the above-mentioned display or warning indicates that the operation is abnormal, the cartridge chamber opening / closing knob 43 is opened within two seconds and the film light shielding window is opened. Has been designed to restart the film feed from where it left off,
It is possible to automatically continue the idle feeding of the film without forcing the photographer to perform a complicated operation such as rewinding and reloading the cartridge again and restarting the idle feeding from the beginning.

As apparent from the above description, the portion executing the operation in step # 404 corresponds to the film light shielding window closing detecting means of the present invention, and the portion executing the operation in step # 420 corresponds to the interrupting means of the present invention. Steps # 421 to # 421
The part executing the operation in # 422 corresponds to the warning unit of the present invention, and the part executing the operations in steps # 423 to # 427 corresponds to the control unit of the present invention.

Next, the subroutine "rewind" will be described in detail with reference to the flowchart of FIG. [Step # 501] Prior to rewinding the film, the flag REWNG and the flag REWEND for clearing the flag REWEND are flags indicating that rewinding has been completed, and the flag REWNG is a flag indicating that rewinding has failed. [Step # 502] A display for notifying that the film is being rewound is displayed. For this purpose, the CPU 100
Sends a signal to the LCD drive circuit 105 to
The film mark of the CD 42 and the number of films are displayed. [Step # 503] Rewinding of the film is started. For this purpose, the CPU 100 sends a signal to the motor control circuit 109 to drive the motor M1 in the reverse direction. [Step # 504] Here, it is determined whether or not the film light shielding window is closed during the film rewinding. As a result, when the cartridge chamber opening / closing knob 43 is opened and the switch SWCTCL is turned on, that is, when the film light shielding window is closed, the process proceeds to step # 520, and otherwise, the process proceeds to step # 505. [Step # 505] The signal from the photo sensor 112 is continuously monitored, and if the film of one frame has been rewound, the process proceeds to step # 506. If the film has not been rewound for one frame, the process proceeds to step # 505. Return to 504. [Step # 506] Since the film rewinding for one frame has been completed, the variable FRAMER indicating the number of shots is subtracted by one. [Step # 507] While the film is being rewound, the number of films displayed on the monitor LCD 42 is decremented by one each time the film is rewound by one frame. For this, PU100 is LC
A signal is sent to the D drive circuit 105 and the monitor LCD 42 is
Of the film mark and the display of the number of films are updated. [Step # 508] It is determined whether the rewinding of the film of all frames has been completed. Whether or not film rewinding of all frames has been completed is determined by whether or not a variable FRAMER indicating the number of shots is 0. And if the variable FRAMER is 1,
That is, if film rewinding has not been completed for all frames, the process returns to step # 504 and the same operation is repeated.

In step # 508, the variable FR
When AMER is 0, that is, when the rewinding of the film of all frames is completed, the process proceeds to step # 509. [Step # 509] Since the rewinding of the film is completed, the CPU 100 sends a signal to the motor control circuit 109 to stop the motor M1. [Step # 510] A flag REWEND indicating that the rewinding of the film has been completed is set. [Step # 511] A display for notifying that the film has been rewound is displayed. For this purpose, the CPU 100
Sends a signal to the LCD drive circuit 105 to
The film mark of the CD 42 flashes, and the number display is turned off. [Step # 512] Cartridge chamber opening / closing knob 43
Is opened and waits until the switch SWCTCL is turned on. [Step # 513] The flag REWEND indicating that the film rewinding has been completed is cleared. [Step # 514] The display for notifying that the film rewinding has been completed is cancelled.

When the cartridge chamber opening / closing knob 43 is opened in step # 504 and the switch SWCTCL is turned on, that is, when the film light shielding window is closed, the process proceeds to step # 520 as described above. [Step # 520] Here, the rewinding is stopped immediately because the light-shielding window of the film was closed during the rewinding of the film 5. For this purpose, the CPU 100 sends a signal to the motor control circuit 109 to stop the motor M1. [Step # 521] A display for notifying that the film light shielding window has been closed during film driving is displayed. For this purpose, the CPU 100 sends a signal to the LCD drive circuit 105 to display a character on the variable numerical value display 7-segment portion 42b of the monitor LCD 42. FIG. 1 shows a display example at this time.
3 is shown.

In FIG. 13, 10 is displayed in the number of shots display, which means that the cartridge chamber opening / closing knob 43 is opened and the film light shielding window is closed when rewinding to the tenth frame.

The blinking of CLOSE is a warning that the cartridge chamber opening / closing knob 43 should be closed, that is, the film light shielding window should be opened. [Step # 522] The CPU 100 sends a signal to the LCD drive circuit 105 to start sounding a warning sound. [Step # 523] Cartridge chamber opening / closing knob 43
Is opened and the switch SWCTCL is turned on, that is, if the film light shielding window is kept closed, step # 52 is executed.
Go to step # 4, otherwise go to step # 525. [Step # 524] If two seconds have not elapsed since the motor was stopped in step # 520, step # 52 was reached.
Returning to step 3, if 2 seconds have elapsed, the process proceeds to step # 530. [Step # 525] Here, the CPU 100 is an LCD
A signal is sent to the drive circuit 105 to stop sounding the warning sound. [Step # 526] The display for notifying that the film light-shielding window has been closed during the film driving performed in step # 521 is canceled. Because of this, CPU10
0 sends a signal to the LCD drive circuit 105 to display the film mark and the number of films on the LCD 42 for monitoring. [Step # 527] Rewinding of the film is restarted. For this purpose, the CPU 100 sends a signal to the motor control circuit 109 to drive the motor M1 in the reverse direction. Then, the process returns to step # 504.

If it is determined in step # 524 that two seconds have elapsed since the motor was stopped, the process proceeds to step # 530 as described above. [Step # 530] The CPU 100 sends a signal to the LCD drive circuit 105 to stop emitting a warning sound. [Step # 531] A flag REWNG is set to indicate that film rewinding has failed. [Step # 532] Cartridge chamber opening / closing knob 43
Is closed and the switch SWCTCL is turned off. [Step # 533] A display for notifying that the rewinding of the film has failed is performed. For this purpose, the CPU 100
Sends a signal to the LCD drive circuit 105 to
The film mark and the number display of the CD 42 are blinked. [Step # 534] The flow waits until the rewind button 44 is pressed and the switch SWREW is turned on. Then, when the rewind button 44 is pressed and the switch SWREW is turned on, step # is executed to rewind the film.
Return to 501.

As described above, if it is determined in step # 504 that the film light shielding window is closed during film rewinding, the process proceeds to step # 520, where the film rewinding is immediately stopped. Followed by step # 52
In steps 1 to # 522, a warning is given that the film light shielding window has been closed.

Therefore, it is possible to prevent the rewinding from being continued while the film 5 is sandwiched between the film light-shielding windows, thereby damaging the film surface which has already been photographed, and to notify the photographer of this abnormal situation. Will be possible. In the next steps # 523 to 527, it is noticed that the operation is abnormal by the above-mentioned display and warning, and the cartridge chamber opening / closing knob 43 is opened within two seconds. Since the rewinding of the film is restarted from the continuation, the film rewinding is automatically continued without forcing the photographer to perform a complicated operation such as operating the rewinding button 44 again. It becomes possible.

As is apparent from the above description, in the rewinding of the film, the portion for executing the operation in step # 504 corresponds to the film light shielding window closing detecting means of the present invention, and the operation in step # 520 is executed. The part that performs the operations in steps # 521 to # 522 corresponds to the interrupting means of the present invention, and the part that performs the operations in steps # 521 to # 522 corresponds to the warning means of the present invention.
The part that executes the operations in 523 to # 527 corresponds to the control means of the present invention.

(Modification) In the above embodiment,
Although the case where the present invention is applied to a single-lens reflex camera is described, the present invention can be similarly applied to a camera such as a silver halide camera. Further, the present invention is applied to a camera capable of magnetic recording, but may be a camera capable of reproducing. Furthermore, the present invention can be applied to a camera having no magnetic storage or reproduction function. Further, the present invention can be applied to an electronic device within a camera, for example, an electronic device using a cartridge for storing a recording medium, such as a video recorder or a cassette tape recorder.

[0082]

As described above, according to the present invention,
For example, if the photographer accidentally operates the opening / closing member to open the cartridge chamber while the film is being fed or rewound, and the film light-shielding window is closed in conjunction with this, the film is rewound or wound immediately. Since the return is stopped and a warning is issued, it is possible to prevent the film from being damaged and to notify the photographer of an abnormal operation.

Further, according to the present invention, for example, if the film light shielding window is opened within a predetermined time after the idle feeding or rewinding of the film having the magnetic recording portion is interrupted, the idle feeding of the film is performed. Since rewinding is resumed, that is, if the photographer who noticed the warning opens the cartridge chamber within a predetermined time and the film light-shielding window is opened, the film is emptied from the point where it was interrupted. Since the feeding and rewinding are restarted, it is possible to continue the driving of the film without requiring the photographer to perform any extra operation.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a main part according to an embodiment when the present invention is applied to a single-lens reflex camera.

FIG. 2 is a diagram showing an upper surface and a rear surface of the single-lens reflex camera of FIG. 1;

FIG. 3 is a diagram showing the inside of a viewfinder field of the single-lens reflex camera of FIG. 1;

FIG. 4 is a block diagram showing an electrical configuration of the single-lens reflex camera of FIG. 1;

5 is a monitor LCD and a viewfinder L shown in FIG. 2;
It is a figure for explaining CD.

FIG. 6 is a view showing a film provided with a magnetic recording unit used in the single-lens reflex camera of FIG. 1;

FIG. 7 is a flowchart schematically showing the operation of the single-lens reflex camera of FIG. 1;

FIG. 8 is a flowchart showing a detailed operation in step # 102 of FIG. 7;

FIG. 9 is a flowchart showing a detailed operation in step # 111 of FIG. 7;

FIG. 10 is a flowchart showing a detailed operation in step # 206 of FIG. 8;

FIG. 11 is a flowchart showing a detailed operation in step # 205 of FIG. 8;

FIG. 12 is a diagram showing a display example in step # 421 of FIG. 10;

FIG. 13 is a diagram showing a display example in step # 521 of FIG. 11;

[Explanation of symbols]

43 Cartridge chamber opening / closing knob (opening / closing member) 44 Rewind button 100 CPU 109 Magnetic recording circuit 110 Magnetic head SWCTCL Switch linked to cartridge chamber opening knob SWCTIN Switch for detecting presence / absence of cartridge SWREW Switch linked to operation of rewind button

Claims (9)

[Claims] 1. Interlocking with an opening / closing member of a cartridge chamber,
In an electronic device having a structure in which a light shielding window of a loaded cartridge is opened and closed, if the light shielding window of the cartridge is closed while the recording medium is being driven, the driving of the recording medium is interrupted and a warning to that effect is issued. Electronic equipment characterized by performing. 2. The electronic apparatus according to claim 1, wherein the drive of the recording medium is restarted when the light blocking window is opened within a predetermined time after the drive of the recording medium is interrupted. 3. In conjunction with an opening and closing member of the cartridge chamber,
In a camera having a structure in which a film light-shielding window of a loaded film cartridge is opened and closed, if the film light-shielding window of the film cartridge is closed while the film is being driven, the film drive is stopped and a warning to that effect is issued. A camera characterized in that: 4. The camera according to claim 3, wherein when the film light shielding window is opened within a predetermined time after the film driving is interrupted, the film driving is restarted. 5. In conjunction with an opening and closing member of the cartridge chamber,
A camera for opening and closing a film light-shielding window of a loaded film cartridge; a driving means for driving the film; a film light-shielding window closing detecting means for detecting the closing of the film light-shielding window of the film cartridge during driving of the film; When the closing of the film light-shielding window is detected while the film is being driven by the film light-shielding window closing detecting means, an interrupting means for interrupting the film driving; and A camera, comprising: a warning unit that issues a warning when the closing of the light shielding window is detected. 6. The camera according to claim 5, further comprising control means for restarting the film driving when the film light shielding window is opened within a predetermined time after the film driving is interrupted. 7. The camera according to claim 3, wherein the driving of the film is at least one of during idle feeding of the film and during rewinding of the film. 8. The camera according to claim 3, wherein the film has a magnetic recording section, and recording means for recording information on the magnetic recording section is provided. 9. The camera according to claim 8, wherein said recording means has a reproducing function of reproducing information recorded in said magnetic storage unit.