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    • 10. 发明授权
    • Camera having motor-driven film wind and rewind system
    • 相机具有电机驱动胶片风和倒带系统
    • US4707104A
    • 1987-11-17
    • US802746
    • 1985-11-29
    • Manabu InoueAkihiko FujinoMasayasu HiranoMasaaki NakaiFumio Yoshida
    • Manabu InoueAkihiko FujinoMasayasu HiranoMasaaki NakaiFumio Yoshida
    • G03B17/42G03B1/18G03B7/26
    • G03B17/425
    • A motor-driven camera comprising a film winding and rewinding mechanism operable by a starter switch, and a low power consumption type memory unit. The film winding and rewinding mechanism include a transmission changeover gear. For sliding this gear a motor is rotated backward once to eliminate a contact between teeth of the changeover gear and a drive gear operatively connected to the motor. The memory unit includes a flip-flop memory circuit and a switching circuit. The memory circuit shifts from a first state to a second state and remains in the second state when the starter switch is closed. In the second state the memory circuit outputs an operation signal to a transmission mechanism control unit, and returns to the first state upon receipt of a signal output by the control unit when an operation is completed. The switching circuit performs a positive feedback function with respect to the closure of the starter switch.
    • 一种电动照相机,包括由起动开关操作的胶片卷绕和倒带机构以及低功耗型存储单元。 胶片卷绕和重绕机构包括传动切换齿轮。 为了滑动该齿轮,马达向后旋转一次以消除转换齿轮的齿与可操作地连接到马达的驱动齿轮之间的接触。 存储单元包括触发器存储器电路和开关电路。 存储器电路从第一状态转换到第二状态,并且当起动器开关闭合时保持在第二状态。 在第二状态下,存储器电路向传输机构控制单元输出操作信号,并且当操作完成时接收到由控制单元输出的信号,返回到第一状态。 开关电路相对于起动开关的闭合来执行正反馈功能。