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    • 2. 发明授权
    • Electronic watch
    • 电子手表
    • US4312058A
    • 1982-01-19
    • US898397
    • 1978-04-20
    • Masaharu ShidaAkira TorisawaMakoto Ueda
    • Masaharu ShidaAkira TorisawaMakoto Ueda
    • G04C3/14G04C10/00G04G19/00H02P8/02H02P8/12G04B9/00G04B19/04G04F5/00
    • G04G19/00G04C3/143
    • In an electronic watch having a stepping motor, a battery voltage detecting circuit, a rotation detecting circuit for indicating rotation or non-rotation of the stepping motor and a motor driving power control circuit for applying a higher power drive pulse to the motor than a normal drive pulse upon detection of non-rotation, the operation of the rotation detecting circuit is inhibited upon indication of a low battery voltage condition and the motor is driven continuously with the higher power drive pulses for the extent of the battery low voltage condition. In this way, the electronic watch can be operated stably when the battery is at the end of its life and operated with lower power consumption during the time when the battery is operated at full voltage.
    • 在具有步进电动机的电子手表中,电池电压检测电路,用于指示步进电动机的旋转或不旋转的旋转检测电路以及用于向电动机施加较高功率驱动脉冲的电动机驱动功率控制电路而不是正常 在检测到不旋转时的驱动脉冲,在指示低电池电压条件时禁止旋转检测电路的操作,并且在电池低电压条件的程度下,用较高功率驱动脉冲连续驱动电动机。 以这种方式,电池在电池寿命结束时可以稳定地操作,并且在电池以全电压运行的时间内以较低的功耗运行。
    • 5. 发明授权
    • Electronic timepiece
    • 电子钟表
    • US4217751A
    • 1980-08-19
    • US898438
    • 1978-04-20
    • Akira TorisawaMakoto UedaKazuhiro AsanoKatsuhiko SatohMasaaki MandaiMasaharu Shida
    • Akira TorisawaMakoto UedaKazuhiro AsanoKatsuhiko SatohMasaaki MandaiMasaharu Shida
    • G04C3/14H02P8/00H02P8/02G04C3/00
    • G04C3/143
    • In an electronic timepiece having a stepping motor, a drive pulse is produced for normally driving the motor, a detecting pulse is generated for detecting whether the motor has rotated in response to the last drive pulse and a correction pulse is produced for driving the motor when non-rotation has been detected. A current limiting resistor is disposed in series with the motor for limiting the current thereto and a switching transistor is connected across the current limiting resistor to short circuit same to effect an increase in the current to the motor. During the detecting pulse, the voltage across the current limiting resistor is compared to a predetermined value. If the voltage is above the predetermined value, which indicates that the motor has not rotated in response to the last drive pulse, the switching means is actuated to short circuit the current limiting resistor and the correction pulse is applied to the motor during the resulting increased current condition so that the motor will be enabled to rotate even when a higher torque load is applied thereto. In this way, a decreased amount of current is used during the normal torque loading condition on the motor.
    • 在具有步进电机的电子钟表中,产生用于正常驱动电动机的驱动脉冲,产生用于检测电动机是否响应于最后一个驱动脉冲而旋转的检测脉冲,并且产生用于驱动电动机的校正脉冲 已经检测到不旋转。 与电动机串联设置限流电阻器,用于限制电流,并且开关晶体管连接在限流电阻两端以短路相同,以实现电动机电流的增加。 在检测脉冲期间,将限流电阻两端的电压与预定值进行比较。 如果电压高于预定值,这表明电动机响应于最后一个驱动脉冲没有旋转,则开关装置被致动以使限流电阻短路,并且在产生的增加期间将校正脉冲施加到电动机 即使当施加较大的扭矩负载时,电动机也能够旋转。 以这种方式,在电动机的正常转矩负载状态期间使用减少的电流量。
    • 8. 发明授权
    • Electronic watch
    • 电子手表
    • US4274150A
    • 1981-06-16
    • US919611
    • 1978-06-27
    • Masataka IkenishiJoichi MiyazakiShozo KushidaHiromasa NakanishiMakoto UedaMasaharu Shida
    • Masataka IkenishiJoichi MiyazakiShozo KushidaHiromasa NakanishiMakoto UedaMasaharu Shida
    • G04C3/14G04C9/00G04C9/04G04C9/08H02P8/02G04B17/12
    • G04C3/14G04C3/143G04C9/00G04C9/04
    • An electronic timepiece having a stepping motor and a drive circuit responsive to a control signal for applying electrical drive pulses having polarities determined by the control signal for rotating the rotor of the stepping motor. The control circuit normally operates in a mode for applying a control signal to the drive circuit effective to control the drive circuit to apply alternate polarity electrical drive pulses to rotate the stepping motor rotor in a normal direction. Resetting circuitry is operable for correcting the time kept by the timepiece. A detecting circuit detects whether the stepping motor rotor is in a position to be rotated by a forthcoming drive pulse after resetting. If the stepping motor rotor is not in a position for rotation a detection circuit signal is applied to the control circuit so that the control signal controls the drive circuit to apply an electrical pulse effective to rotate the stepping motor rotor after resetting. Consequently, after resetting the immediately forthcoming drive pulse will have a polarity effective to rotate the stepping motor rotor and no time will be lost.
    • 一种具有步进电机和驱动电路的电子表,其响应于控制信号,用于施加具有由控制信号确定的极性的电驱动脉冲,以旋转步进电机的转子。 控制电路通常以向驱动电路施加控制信号的方式工作,该控制信号有效地控制驱动电路以施加极性电驱动脉冲以使步进电动机转子沿法向旋转。 复位电路可操作用于校正由钟表保持的时间。 检测电路检测步进电动机转子是否处于在复位后由即将到来的驱动脉冲旋转的位置。 如果步进电动机转子不在旋转位置,则检测电路信号被施加到控制电路,使得控制信号控制驱动电路以在复位之后施加有效地旋转步进电动机转子的电脉冲。 因此,在复位之后,即将到来的驱动脉冲将具有有效旋转步进电动机转子的极性,并且不会丢失时间。
    • 9. 发明授权
    • Electronic watch
    • 电子手表
    • US4241433A
    • 1980-12-23
    • US927362
    • 1978-07-24
    • Makoto UedaMasaharu ShidaMasataka IkenishiJoichi MiyazakiShozo KushidaHiromasa Nakanishi
    • Makoto UedaMasaharu ShidaMasataka IkenishiJoichi MiyazakiShozo KushidaHiromasa Nakanishi
    • G04C3/14H02P8/02G04B19/00G04C3/00G04C19/00
    • G04C3/143
    • In an electronic watch a non-operation detecting circuit detects the non-operative condition of the stepping motor of the watch and produces a non-operation signal each time the stepping motor fails to operate in response to the standard pulse which drives the same. A counter counts the number of non-operation signals and stores the count for later use. A rotation detecting circuit detects the resumption of operation of the stepping motor in response to the standard pulse from the non-operative condition and a quick feed control circuit quickly advances the stepping motor in response to an input from the rotation detection circuit by thereafter supplying, instead of the standard pulses, the quick feed pulses to the drive circuit for the motor equal in number to the number of the non-operation signals counted in the counter. In this way the corrected time will be displayed by the watch even after being rendered inoperative as a result of an external condition such as low temperature or a high strength DC magnetic field.
    • 在电子手表中,非操作检测电路检测到手表的步进电机的非操作状态,并且每次步进电动机响应于驱动该步进电动机的标准脉冲而不工作时产生非操作信号。 计数器对非操作信号的数量进行计数,并存储计数以备以后使用。 旋转检测电路响应于来自非操作状态的标准脉冲检测步进电动机的操作恢复,并且快速进给控制电路响应于来自旋转检测电路的输入而快速地使步进电机前进, 而不是标准脉冲,到电机的驱动电路的快速进给脉冲数量等于在计数器中计数的非操作信号的数量。 这样,由于诸如低温或高强度DC磁场的外部条件的结果,即使在由于外部条件而导致无法操作之后,手表也将显示校正时间。