| 摘要 |
PURPOSE:To attain the actuation of a camera even in the case of the lowering a battery voltage by detecting battery voltage or the lowering of the speed of a motor and prohibiting the simultaneous actuation of a motor for winding film and a motor for charging and a motor for adjusting a focus. CONSTITUTION:When the battery voltage lowers and the output from a voltage detection circuit becomes '1', or when the number of rotation of motors M1 and M2 lowers because of the increase of loads and mechanical charge is not terminated (neither SWCHG 1 nor SWCHG 2 becomes ON) in a specified time, or when the interval of pulse signal from a SWFLM 1 which generates the pulse signals according to the winding of a film becomes longer than a specified time at the time of actuating the motors M1 and M2 in a high speed mode, the signal of stopping the motors is transmitted to driving circuit DR1 and DR2 so as to stop the motors M1 and M2. At the same time the signal of '0' is transmitted to a lens motor control circuit so as to stop the action of a lens motor M4. After that the signal of the inverse rotation of motor is transmitted to the driving circuits DR1 and DR2. Thus, the motors M1 and M2 execute the inverse rotation and terminate the mechanical charge and the winding of film in a low speed mode, so that the motors M1 and M2 are stopped.
|
