Source: http://www.google.com/patents/US4956656?dq=%22robert+sheehan%22
Timestamp: 2016-05-24 09:03:19
Document Index: 389512913

Matched Legal Cases: ['art 41', 'art 30', 'art 35', 'arts 36', 'art 35', 'art 36', 'art 36', 'arts 15', 'art 28', 'arts 31', 'art 37', 'arts 15', 'arts 33', 'arts 33', 'art 38']

Patent US4956656 - Control device for use in a camera having a consecutive picture taking mode ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA mode selecting device for use in a camera provided with various picture taking modes including a normal picture taking mode, having a mode selecting device which is able to return to the normal picture taking mode from various kinds of camera modes automatically. The device further including a component...http://www.google.com/patents/US4956656?utm_source=gb-gplus-sharePatent US4956656 - Control device for use in a camera having a consecutive picture taking mode and a single picture taking modeAdvanced Patent SearchPublication numberUS4956656 APublication typeGrantApplication numberUS 07/320,620Publication dateSep 11, 1990Filing dateMar 8, 1989Priority dateNov 14, 1984Fee statusPaidAlso published asUS4814813, US4841318, US4849779, US4959679, US4967217, US4990944, US5659829Publication number07320620, 320620, US 4956656 A, US 4956656A, US-A-4956656, US4956656 A, US4956656AInventorsKouji Yamamoto, Akira Yamanaka, Nobuyuki TaniguchiOriginal AssigneeMinolta Camera Kabushiki KaishaExport CitationBiBTeX, EndNote, RefManPatent Citations (10), Referenced by (80), Classifications (15), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetControl device for use in a camera having a consecutive picture taking mode and a single picture taking mode
US 4956656 AAbstract
A mode selecting device for use in a camera provided with various picture taking modes including a normal picture taking mode, having a mode selecting device which is able to return to the normal picture taking mode from various kinds of camera modes automatically. The device further including a component for selecting a first mode in which the camera operates to take picture consecutively and a second mode in which the camera operates to take only one picture at a time, a mechanism for preliminary winding up of a film by a predetermined length in response to the closure of the back lid of the camera, the film lying in the normal frame position when the preliminary winding is terminated and components for forcibly selecting the second mode before the preliminary winding is terminated.
1. A control device for use in a camera comprising:means for selecting a first mode in which the camera operates to take pictures consecutively, and a second mode in which the camera operates to take only one picture; means for preliminary winding-up a film by predetermined length in response to a closure of a back lid of the camera, the film lying in the normal frame position when the preliminary winding is terminated; and means for forcibly selecting the second mode before the preliminary winding is terminated. Description
This application is a continuation of application Ser. No. 07/169,586, filed Mar. 17, 1988 now U.S. Pat. No. 4,814,318 which is a divisional of Ser. No. 06/797,510, filed on Nov. 13, 1985, now abandoned.
An essential object of the present invention is to provide a camera having a mode selecting device which is able to return to the normal picture taking mode from various kinds cf the camera modes automatically with a decreased size and an easy operation.
In accordance with the above-mentioned objects, the present invention is directed to a control device for use in a camera including components for selecting a first mode in which the camera operates to take pictures consecutively, and a second mode in which the camera operates to take only one picture at a time. The control device further includes a mechanism for the preliminary winding up of a film by a predetermined length in response to the closure of the back lid of the camera, the film lying in a normal frame position when the preliminary winding is terminated and components for forcibly selecting the second mode before the preliminary winding is terminated.
Reference numeral 38 denotes a film frame number display unit which displays the number of the frame of the photographic film in position in such a manner that when the photographic film is not mounted in the camera the number 0 is displayed. When the photographic film is mounted in the camera, mark - is displayed during a preliminary forwarding of the leading portion of the film and the number 1 is displayed when the first frame of the photographic film is advanced to position. The contents displayed in the display unit 38 are changed one by one each time the frame of the film is advanced. When the contents of the display unit 38 are (39), if the contents are increased, the contents of the display unit 38 changes to 1. When the battery is removed from the camera with the photographic film is loaded in the camera, the display unit 38 displays 00 flashing. The number of the frame displayed by the display unit 38 can be preset by operation of the film counter setting button 4.
A switch S0 is operably coupled with the lens cover so as to be turned on and off corresponding to closure and opening of the lens cover. When the switch S0 is switched from on to off or off to on, a High pulse is generated by the delay circuit DL1 and exclusive OR circuit EO1 to the NCR gate NO1. A switch BKS is operably coupled with the rear lid of the camera so as to be turned on when the rear lid is opened and to be turned off when the rear lid is closed. When the switch BKS is switched from on to off or from off to on, a High pulse is generated by the delay circuit DL2 and exclusive OR circuit EO2 to the NCR gate NO1.
A switch MRWS is turned on when the photographic film is manually rewound. A switch ARWS is turned on when the photographic film brought into a stretched state during film winding. When any one of the switches MRSW or ARWS is turned on, the one shot multivibrator circuit OS2 generates a High pulse to the NOR gate NO1. S1 is a light measuring switch which is turned on when the release button 1 is depressed to the first depth. When the switch S1 is turned on, the output of the inverter IN1 is reversed to Low and a interruption signal is inputted to the terminal it1 of the microprocessor MC. A switch FWS is turned on during film winding and the detailed construction of the switch FWS is shown in FIG. 4. A switch LES is turned on when a mechanism for picture taking (such as a lens moving mechanism) is started and is turned off when charge cf the picture taking mechanism is completed. When any one of the switches FWS and LES is turned on, the output of the OR gate OR1 becomes High, film winding is continued. FDS0 is a switch which is turned off when the photographic film is wound on a film winding spool. FDS1 is a switch disposed near a rail for the film winding and is turned off when the photographic film is preset in the position. When it is detected by the off state of any one of the switches FDS0 and FDS1 that the photographic film is present in either position, the output of the AND gate AN2 becomes Low. When the photographic film is not detected in any positions, both of the switches FDS0 and FDS1 are turned on and the output of the AND gate AN2 becomes High, so that the one shot multivibrator circuit OS3 generates a High signal. In this case if the rear lid of the camera is opened, the output of the one shot multivibrator circuit OS3 is fed to the NOR gate NO1 passing the AND gate AN0. The switch FDS0 disposed at the film winding spool can detects the photographic film even if the rear lid is opened. The switch FDS1 disposed at the rail can not detect the photographic film when the rear lid is opened since the photographic film is not pushed by the rear lid. The switch FDS1 is so provided that when the photographic film is retracted into the container leaving a suitable length of the leading portion of the photographic film exposed out of the film container, the switch FDS1 is disengaged from the photographic film and is turned on. When the switch FDS1 is turned on due to disengagement from the photographic film, the retraction of the photographic film into the container is stopped. In other word, the photographic film is not completely retracted in the container.
A switch SPS is coupled with a follower sprocket which is rotated with the movement of the photographic film and the switch SPS is repeatedly turned on and off every time the photographic film advances a predetermined length. In case the switch SPS does not change its switching state for a predetermined period, it can be detected that there is a fault condition in retracting the photographic film. In a case where a hard photographic film is mounted in the camera, the leading portion of the film tends to be curved. Therefore, when the curved portion of the film comes to a driving sprocket which rotates to advance the film, the perforations of the photographic film may be disengaged from the teeth of the driving sprocket, whereby the photographic film can not be retracted despite that the driving sprocket rotates. Such condition as mentioned above is referred to as the fault condition. Under such fault condition, the switch FDS1 disposed near the rail can detect the photographic film, the retraction of the film can be continued, whereby the power is wasted. The switch SPS is provided for preventing an erroneous operation when a particular photographic film such as a relatively hard film is used. The switch SPS is also provided for detecting undue voltage drop of the battery i.e., when the inner resistance of the battery is increased, then the photographic film can not be advanced the predetermined length within a predetermined period of time.
FSS is a switch for detecting a stop position of the photographic film during film winding. The detail of the switch FSS is shown in FIG. 4 in which a slider 40 made of electrically conducting material is adapted to rotate along circular conductors 41 and 43 each formed coaxially on a substrate of a print circuit board by way of print circuit technique. The outer circular conductor 41 is interrupted at 41d. The slider 40 can be rotated in a clockwise direction in FIG. 4 one round each time one frame of the photographic film is advanced during film winding operation. When the photographic film is retracted, the slider 40 is rotated in a counter clockwise direction. When the film winding for one frame is completed, the slider 40 is positioned across the inner circular conductor 43 and a point conductor 42 disposed corresponding to an interrupted part 41d so as to conduct therebetween and the switch FSS is turned on. When the photographic film is advanced, the slider 40 leaves the point conductor 42 to turn off the switch FSS and the circular conductor 41 and 43 are conducted by the slider 40 to turn on the switch FWS. As the photographic film is advanced and when the slider 40 leaves the circular conductor 41 and the switch FWS is turned off, a motor MO for moving the photographic film is cut off from the power source and is braked to stop forwarding of the photographic film. After the motor MC is out off from the power source and braked, the film is further wound by inertia of the film drive mechanism. The amount of the film winding by inertia is changed by the output power of the battery i.e., if the internal resistance of the battery is low (the battery is new) the amount of the film winding by inertia is large, on the contrary if the internal resistance of the battery is high, the amount of the film winding by inertial is small. Therefore, in case the interval between the end of the circular conductor 41 and the point conductor 42 is determined corresponding to the amount of the film winding by inertia for new battery, the slider 40 can not reach the point conductor 42 if the internal resistance of the battery increases. If the amount of the film winding by inertia is too small, the interval of the adjacent frames is shortened and in an extreme case, the two adjacent frames are overlapped. In order to prevent such defect, in the preferred embodiment, it is judged whether or not the switch FSS is turned on i.e., the slider 40 reaches the point conductor 42 after a predetermined period is lapsed from the time during which the motor MO is cut off from the power source. If the switch FSS is not turned on after said predetermined period, the motor MO is driven again till the switch PSS is turned on i.e. the slider 40 reached the point conductor 42 to advance the photographic film.
A comparator AC10 has its reversed input terminal supplied with a reference voltage of a stabilized voltage source ECC and has its non reversed input terminal supplied with the voltage across the resistor R8 and a comparator AC20 has its reversed input terminal supplied with another reference voltage which is a division of the output voltage of the stabilized power source ECC divided by the resistors R10 and R11 and has its non reversed input terminal supplied with the voltage across the resistor R8. When the voltage in the main capacitor C11 is increased up to a voltage to emit enough light for assuring a picture taking under a predetermined guide number, the output of the comparator AC20 is turned to High. The microprocessor MC effects to display a charge completion and to prevent a release lock by the High signal from the comparator AC20. This state is referred to as preliminary charge completion state and abbreviated as PCS. In the present embodiment the main capacitor C11 is further charged over PCS up to such a state that the comparator AC10 turns its output to High. When the microprocessor MC detects the High signal cf the comparator AC10 through the terminal p14 (this state is referred to as substantial charge completion state and abbreviated as SCS), the microprocessor MC makes the terminal p12 High and terminal p13 Low to turn off the transistors BT36, BT35 and BT31 so as to stop charge in the main capacitor C11 and stop detection of the charging operation in the main capacitor C11. By stopping detection of the charging operation as mentioned above, main capacitor C11 discharges only by self discharge, so that the voltage of the main capacitor C11 is kept higher than PCS for a long time.
Table 1 shows the relation of the data stored in the registers DPR0 to DPR3 and the contents to be displayed on the display unit 2. The bij in the table 1 represents the data stored in the j-th bit of the register DPRi. The lower five bits of the register DPR0, are set by the ISO sensitivity data which are transferred to a part of a segment driver SGC through a segment decoder DE10 for displaying the ISO sensitivity data in the display part 30. Three higher bits of the resister DPR0 are spare bits.
The bits b22, b23 and b26 of the register DPR2 are connected to the decoder DE13. The relation between the outputs of the decoder DE13 and the bits b22, b23 and b26 is shown in table 2. The combinations of the data of the bits b22, b23 and b26 are formed in the microprocessor MC. When the retraction of the film is completed, the combination of the data of the bits b26, b23 and b22 is "1 1 1", the terminals d12 and d13 become High. When the terminal d13 is High, the output of the OR gate OR23 becomes High, and the display part 35 is turned on. When the terminal d12 is High, the AND gates AN25 and AN26 are enabled, whereby the OR gates OR21 and OR22 generate pulses synchronized with the output of the divider DIV alternately to turn on and off the rear lid display parts 36 and 37 alternately for warning to open the rear lid and take out the photographic film from the camera. With "101" of the bits b26, b23 and b22, the terrminals d13 and d11 become High. This state occurs when the photographic film is correctly mounted in the camera and the rear lid is closed. Under such state, the outputs of the OR gates OR21 and OR23 become High, whereby the film display part 35 and the rear lid display part 36 are turned on. When the rear lid is closed without the photographic film, the data of the bits b26, b23 and b22 are "001" and the only the output of the terminal d11 is made High to turn on only the rear lid display part 36.
The bits b37 and b36 are "11" when the normal flash light picture taking is possible, "01" when the normal flash light picture taking is possible but the distance of the photographic object is too long, "10" when PCS has not yet been completed and "00" for the normal picture taking mode. The decoder DE16 produces the various outputs as shown in the table 4 depending o the data of the bits b36 and b37.
Referring to FIG. 3 again an oscillator circuit OSC generates the standard clock pulses STCK which are supplied to the microprocessor MC and the display control circuit DS. The automatic focusing circuit AC starts to measure the distance between the object and camera upon receipt of a High signal from the terminal p26 of the microprocessor MC and stores the measured distance The data of the measured distance is supplied to the automatic exposure control circuit EC. When the release magnet is driven, the lens moving mechanism starts to move the objective lens 10 and the switch LES is turned on. A lens pulse output circuit LP generates a pulse each time when the objective lens is moved a predetermined length. The automatic focusing circuit AC counts the number of the pulses generated from the circuit LP and compares the counted number of the pulses with the stored distance data, producing a signal to excite a magnet AM having a permanent magnet core to stop the lens, so that the objective lens is stopped in position corresponding to the detected distance.
The analog signal representing the ISO sensitivity data fed from the DA converter DA1 is supplied to the noninverted input terminal of an operational amplifier 0A1 for the light measurement.
A light receiving element PD is connected across both input terminals of the operational amplifier 0A1 and the current flowing the light receiving element PD is logarithmically compressed by a diode D2, whereby the output of the operational amplifier 0A1 outputs Bv+Sv=Ev.
When a period of sufficient time during which the power of the line Vc is supplied and the light measurement circuit is stabilized and the automatic focusing circuit AC stores the distance data is lapsed, the microprocessor MC makes its output terminal p19 Low, whereby an analog switch AS1 is turned off and the capacitor C4 stores the output of the operational amplifier 0A1 or the light measurement circuit.
The microprocessor MC is provided with the interrupt input terminals it0, it1, it2, and reset terminal RES and the order of the priority is RES, it0, it1, it2. The microprocessor MC is provided with an internal timer for counting the internal clock pulses so that when the count data of the internal timer reaches a preset value, the timer interruption is enabled. When any one of the terminals RES and it0, it1, it2, it receives an interruption, the microprocessor MC is set to ready state and performs any one of the interruption according to the instructions fed from the ROM. While one of the interruption is executed other interruption is not entered in the microprocessor MC but a flip-flop is set to store the fact that the other interruption is requested. When the prior interruption is completed, the other interruption can be entered in the microprocessor MC. The timer interruption is allowed only when timer interruption is enabled.
In the step s129, the bits b32, b31 and b30 are set to "001" so as to set the camera in the normal picture taking mode, turning on the normal picture taking mode display 17. In this case the bits b33 to b37 are set by "00000" so as to make the LEDs L1 to L4 off. Then the flag BAF is made "0" in the step s132 and in turn the program flow goes to the step s133. The flag BAP is made "1" when the battery BA is exchanged with the photographic film remained in the camera (s432). The flag BAF is provided for warning that the data of the film frame number stored in the film counter is lost. Therefore, in case the rear lid is closed from the opened position. It is assumed that the photographic film is exchanged and since warning is not necessary the flag BAF is reset to "0".
When the transfer of the display data is completed, the program flow goes to the step s134 for the film winding sub routine. The details of the film winding sub routine are shown in the steps after s165 in FIG. 10. In the step s 165, a flag WF is set to "1" to show that the photographic film is being wound. Then an interruption timer is set by 2 seconds in the step s166 to enable the timer interruption. Subsequently, the terminal p10 is made High and p11 Low in the step s168 to start the motor MO for film winding. The step s169 is provided to wait for turning on of the film winding detection switch FWS. When the film winding detection switch FWS is off, the program flow goes to the step s170 to detect whether the switch ARWS is turned on due to film stretch and whether the switch MRWS is turned on by the manual film rewinding.
When it is detected in the step s171 that the switch FWS is opened, the terminals p10 and p11 are made High to brake the motor MO. Then the timer interruption is disabled in the step s174, the program flow waits for a predetermined period of time in the step s175. Said predetermined time is set to 50 m sec for example corresponding to the time necessary to completely stop the film winding after the motor MO is braked. When said predetermined time is lapsed, the program flow goes to the step s176. The switch LES coupled with the picture taking mechanism is surely turned off before the film winding switch FWS is turned off. It is detected in the step s176 whether or not the switch PSS for defining the stop position of the film winding is turned on and with on of the switch FSS, the terminals p10 and p11 are made Low in the step s183 to turn off the motor MO and the flag WP is reset to "0" in the step s184, then the program flow goes to "RETURN".
When the switch FSS is turned off due to consumption of the battery BA, this is detected in the step s 176 and the program flow goes to the step s177 to preset the interruption timer by 1/4 sec. to enable a timer interruption and the terminal p10 is made High, p11 Low to start the motor MO again. Then the program flow waits until the film winding stop position detecting switch FSS is turned on in the step s180. When it is detected that the switch FSS is turned on, the timer interruption is disabled in the step s181 and the motor MO is braked for 50 msec. and then the motor is turned off to stop the film winding and the flag WP is reset to "0" and the program flow goes to RETURN.
In case the switch FWS is not turned off in 2 sec. or the switch FSS is not turned on in 1/4 sec. due to wearing of the battery BA, the timer interruption is executed and the program flow performs the steps after s245 shown in FIG. 11. In the step s245, it is judged whether or not the flag WP showing the film winding is "1". With "1" of the flag WF, the motor MO is stopped in the step s246 to stop the film winding. Then the bit b20 is made "1" to cause the film counter display 38 to be turned on and off repeatedly. The bit b24 is made "0" to turn off the film winding displays 33 and 34. Also the bits b30 to b32 are made "001" to set the camera in the normal picture taking mode, and the bit b21 is made "0" so as to turn off the display parts 15, 16, 17, 18, . . . 26 and 27. The display data is transferred to the display control circuit DS then the microprocessor MC stops inhibiting all interruptions. Accordingly the camera can not be operated so far as the battery BA is replaced by a good battery. Since the film counter display 38 is only turned on and off, only the warning that the camera can not be used is displayed.
In case the flag BAF is "0", it is judged whether the content of the register FCR is "00H " in the step s55 and with "00H ", the register DPR1, is set by 0AH and the bit b20 is set set by "0" so as to display "0" in the film counter 38. If it is detected in the step s55 that the register FCR is not "00H ", it is detected whether FCR is "01H " in the step s57. With "01H ". the data B0H is set in the register DPR1, to display "-" in the step s58 and the program flow goes to RETURN. With not "01". it is judged in the step s59 whether the register FCR is "02H ". With "02H ", the register DPR1, is set by 0BH to display "-" so as to represent the photographic film is preliminarily being wound, and the program flow goes to RETURN through the step s71. With not "02H " of the register FCR, the program flow goes to the step s61, wherein it is judged whether the content of the register FCR is "2AH ". When the content of the register is "2AH ", since the content to be displayed on the film counter exceeds 39, the contents of the register FCR is set to "29H " for displaying "39" in the film counter 38 and the program flow goes to the step s63. On the other hand, if the content of the register FCR is not "2AH ", the program flow goes to the step s63, wherein a result of decrement by 2H which corresponds to the number of the film counter of the preliminary film winding from the actual content of the register FCR is set in the register FCR1 and the calculation of the display data is performed in such a manner that it is first detected what times are the contents of the register FCR1 to "AH " and one of "0" to "3" are set in the register FCR2 i.e., the position of 10 in terms of a decimal number and any one of "0" to "9" is set in the register FCR1 i.e., the position of 1. In the step s67, it is judged whether the contents of the lower four bits of the register FCR1 is "0H " and with "0H ", "AH " is set in the register FCR1 so as to display "0" in the step s68. If the lower four bits of the register FCR1 is not "0H ", the program flow goes to the step s69 directly. In the step s69, the data in the lower four bits of the register FCR2 is stored in the upper four bits of the register DPR1 and the data in the lower four bits of the register FCR1 is stored in the lower four bits of the register DPR1. Then the lower four bits of the register FCR2 are set by "0H " in the step s70 and the bit b20 is set by "0" in the step s71 so as to display "0" on the film counter 38.
If SCS is not completed in 10 seconds after PCS is completed, the timer interruption is executed when 10 seconds is lapsed to perform the step s245. Since the flag CHF is 1, the program flow goes to the step s266 through s 245 and s253 to stop the boosting operation and the detection of the charged voltage across the capacitor C11 is stopped. Then the flag CHF is reset to 0. In the step s269, the film counter display 38 is turned on and off by making the terminal b20 "1" to warn that the battery BA is consumed. Then the display data is transferred in the step s270 and the interruption to the terminals it0 and it1 is enabled and the program flow goes to the step s359 shown in FIG. 12 to detect whether the light measurement switch S1 is turned on. When the switch S1 is turned off, the sub routine s361 is performed. The sub routine s361 is shown in the steps after s365. In the step s365, the terminal p17 is made High and the transistor BT1 is made off and the terminal p19 is made High in the step s366 to release the AE lock. The bits b34 to b37 are made "0000" to turn off the LEDs L2 to L4. The display data is transferred in the step s368 then the self timer flag STF is reset to 0 and the program flow goes to RETURN. The steps s359 and s361 can be omitted when the rear lid is closed. However, these steps are performed if the steps after s266 are performed when the boosting is made upon closure of the switch S1.
The register FCR for the film counter is set by "00H " in the step s97 and the sub routine for the film count is executed then the bits b27 to b24 are set by "0000", causing the display part 28 to be turned on, the display parts 31 to 35 to be turned off in the step s98. Then the bits b32 to b30 are set by "001" in the step s99 to set the camera in the normal picture taking mode and the bits b37 to b33 are set by "00000" to turn off LEDs L1 to L4. The register SVR is set by the data corresponding to ISO sensitivity data of ISO 100 in the step s101, which data is transferred to the display register DPR0 in the step s101. Subsequently the register DPR1 is set by "0AH " corresponding to the frame number of the photographic film "0" and the bits b23 and b22 are set by "10" to turn on the display part 37 in the step s104, then the display data is transferred. In turn the program flow goes to the step s106 wherein it is judged whether or not the photographic film is mounted in the camera. If the photographic film is present, the interruption to the terminals it0 and it1 is enabled and the microprocessor MC stops. If the photographic film is absent, the program flow goes to the step s109 to judge whether the flag TIF is "1". With "1" of the flag TIF, which represents that the motor MO is stopped due to the abnormal state during film rewinding, the sub routine s111 for the film winding is executed and if the photographic film is correctly wound, the sub routine s111 is repeated again. When the correct film winding is performed two times, the flag TIF is reset to "0" then the program flow goes to the step s114. This operation is provided for detecting whether the film rewinding is stopped due to the worn out of the battery BA. In case the rear lid is opened during the film rewinding, the state stored in the microprocessor MC is brought into the film rewinding completed state directly, whereby the battery BA can not be checked, so that the subroutine s111 is repeated two times. The routine s111 may be repeated more than two times. The more the number of times of repeating the routine s111, the higher the safety by checking of the battery BA. If it is detected in the step s109 that the flag TIF is "0", it is judged in the step s110 whether the film winding is completed, and if the film winding is not completed, the remainder of the film is wound in the step s112 and if it is completed, the program flow goes to the step s114.
In case the lens cover is opened or closed, a pulse is generated from the exclusive OR circuit E01 and the interruption to the terminal it0 is enabled and the operation is started from the step s1 and goes to the step s196 through the steps s1 to 5, 90, 91 or 92 and s190. It is judged in the step s196 whether the lens cover is opened. If the lens cover is opened, it is judged in the step s197 whether the flag CVF is "1". "1" of the flag CVF means that the state of the lens cover is kept unchanged, then the program flow goes to the step s227, wherein it is judged whether the rear lid is opened. If the rear lid is opened, the interruption to the terminals it0 and it1 is enabled and the microprocessor MC stops.
When it is detected that the lens cover is closed from the opened state, the flag CVF is set to "0" in the step s204. Then the bit b21 is set to "0"to turn off the display parts 15, 16 to 27 and the bits b37 to b33 are made "00000" to turn off LEDs L1 to L4 further the display data is transferred and the microprocessor MC stops. Interruption to the terminal it0 is enabled in the step s210 and the state of the flag COF is judged in the step s211. The flag COF is set to "0" while the preset in the film counter is possible. When the flag COF is "1" with the lens cover closed, the microprocessor MC stops and the interruption only to the terminal it0 is enabled and the interruption by the light measurement switch S1 is disabled. When it is detected that the flag CVF is "1" with the lens cover opened in the step s212, the operation after the steps s215 to start the boosting in the flash circuit is executed and the interruption to the terminal it1 is enabled. If the flag COF is "1" with the lens cover opened, the interruption to the terminals it1 and it2 is enabled. If the lens cover is closed, only the interruption to the terminal it2 is enabled. The interruption to the terminal it0 is enabled by the step s210.
In the step s438, the sub routine for the film counter display and it is judged in the step s439 that the film winding is completed. If the film winding is not completed, the bit b24 is set to "1" to turn the display parts 33 and 34 on and off alternately, then the display data is transferred, performing the sub routine s443 for the film winding, and the program flow goes to the step s444. If it is detected in the step s439 that the film winding is completed, the program flow goes to the step s444 to set the bit b24 to "0" to turn off the display parts 33 and 34. Then the display data is transferred and the interruption to the terminals it0, it1 and it2 is enabled, the register PCR is reset, and the boosting operation and detection of the voltage of the capacitor C11 are started. Then program flow goes to the step s455, wherein the flag COF is reset to "0" The flag COF is made " 0" while the film counter can be preset. The PCS is detected in the step s456, and if PCS is not completed, the program flow goes to the step s457, wherein it is judged whether or not the flag COF is "1". With "0" of the flag COF, the program flow goes to the step s458 to wait for a predetermined time, then "1" is added to the contents of the register PCR and it is judged in the step s472 whether or not the contents of the register PCR is T1. If the contents of the register PCR are not T1, the program flow goes to the step s456 directly, while if the contents of the register PCR are T1, the interruption to the terminal it2 is disabled in the step s474 and the flag COF is set to "1", then the program flow goes to the step s456. By selecting the amount (the predetermined time in the step s458)�(T1)=30 seconds, it is possible to provide a 30 second timer. If PCS is completed in the course of the process as mentioned above, the program flow goes to the step s465 to reset the register CHR and it is judged in the step s466 whether or not SCS is completed. If SCS is not completed, the program flow goes to the step s470 to wait for the predetermined time, then it is judged in the step s471 whether or not the flag COF is "1". With "1 " of the flag COF, the program flow goes to the step s476. With "0" of the flag COF, "1" is added to the contents of the register PCR in the step s472, subsequently it is judged whether the contents of the register PCR is T1. If the contents of the register PCR is T1, the interruption to the terminal it2 is disabled in the step s491 and the flag COF is set to "1" then the program flow goes to the step s476. If the contents of the register PCR is not T1, the program flow goes to the step s476 directly. In the step s476, "1" is added to the register CHR and it is judged in the step s477 whether the contents of the register CHR is T2. With T2 of the register CHR, which represents that (the predetermined time in the step s470)�(T2)=10 seconds are lapsed, the bit b20 is set to "1" to turn on and off the counter display part 38 then the display data is transferred and the program flow goes to the step s485. If the contents of the register CHR is not T2, the program flow goes to the step s466.
TABLE 1______________________________________REGIS-TER    BIT      DATA    STATE     CONTENT______________________________________DPR0  b00 to b04           00010   ISO 25    ISO DATA           11111   ISO 5000  b05 to b07           *****DPR1  b10 to b13           0000    blank     lower digit of                             film counter           0001    1           1001    9           1010    0           1011    --  b14 to b17           ditto   ditto     upper digits                             of film counterDPR2  b20 0       cntr on   battery good  b20 1       cntr on/off                             battery consumed                             change battery  b21 0       mode, name off                             cover closed  b21 1       mode, name on                             cover opened  b23, b22           11                rwnd completed           01                r.l. closed           10                r.l. opened           00                note 1  b24 1                 film winding  b24 0       off       not winding  b25 1                 film rewinding  b25 0       off       not rewinding  b26 1           on    film present  b26 0       off       film absent  b27 1                 ISO of container  b27 0       FIX       fixed ISO 100DPR3  b32 to b30           001     STANDARD  normal mode           010     SELF      self timer mode           011     CLOSE     close mode           100     FILL F.   fill in flash           101     CONTI.    consecutive mode           110     NON F.    non flash mode  b33 1       L1 on.off 10s                             self timer on           0       L1 off  b35,b34           00      L2 off                             F.L. photo           10      L2 on off                             note 2           01      L2 on                             normal ambient                             light photoDPR3  b37,b36           11      L4 on L3 off                             F.L. photo           01      L4 on and off                             F.L. photo                   L3 off                             F.L photo &#8734; warn           10      L4 off                   L3 off                             F.L. photo                             and incomplete                             charge           00      L4, L3 off                             normal photo______________________________________ [Note 1] r.l. (rear lid) is opened and closed with film present. [Note 2] normal photo with lower limit of shutter speed for preventing a camera shake. F.L.photo; flash light photographing.
TABLE 2______________________________________b26   b23         b22  d14                         d13                               d12                                    d11                                         d10______________________________________1       1     1         L     H     H    L    L1       0     1         L     H     L    H    L0       0     1         L     L     L    H    L0       1     0         L     L     L    L    H1       0     0         H     L     L    H    L______________________________________
TABLE 3______________________________________b22  b21        b20                d25                     d24                          d23                               d22                                    d21                                          d20______________________________________0      0     1       L    L    L    L    L     H0      1     0       L    L    L    L    H     L0      1     1       L    L    L    H    L     L1      0     0       L    L    H    L    L     L1      0     1       L    H    L    L    L     L1      1     0       H    L    L    L    L     L______________________________________
TABLE 4______________________________________b27  b26     d42  d41                                d40______________________________________1      1            L         H      L0      1            H         L      L1      0            L         L      H0      0            L         L      L______________________________________
TABLE 5__________________________________________________________________________Ev value   AC1          AC2              AN51                  AS2                     AS3                         AS4                             control Ev__________________________________________________________________________Ev &lt; EvL      L   L   L   OFF                     0FF ON  EvLEvL &lt; Ev &lt; EvH      L   H   H   ON OFF OFF EvEvH &lt; Ev      H   H   L   OFF                     ON  OFF EvH__________________________________________________________________________
TABLE 6______________________________________BRW        BAF    FCR        DPR1                              display______________________________________1          0      *          0AH                              0*          1      *          AAH                              00             00H   0AH                              0             01H   B0H                              --             02H   0BH                              --             03H   01H                              1             04H   02H                              2             05H   03H                              3             06H   04H                              4             07H   05H                              5             08H   06H                              6             09H   07H                              70          0      0AH   08H                              8             0BH   09H                              9             0CH   1AH                              10             0DH   11H                              11             15H   19H                              19             25H   35H                              35             29H   39H                              39             2AH   39H                              39______________________________________
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Ltd.Timer module for compact printer system* Cited by examinerClassifications U.S. Classification396/406, 396/263International ClassificationG03B17/42, G03B7/16, G03B15/05, G03B7/091Cooperative ClassificationG03B17/425, G03B7/091, G03B7/16, G03B15/05, G03B2215/0503European ClassificationG03B17/42B, G03B15/05, G03B7/16, G03B7/091Legal EventsDateCodeEventDescriptionApr 7, 1992CCCertificate of correctionFeb 22, 1994FPAYFee paymentYear of fee payment: 4Mar 3, 1998FPAYFee paymentYear of fee payment: 8Feb 14, 2002FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services