| 摘要 |
<p>PURPOSE:To save electric power consumption by cutting off power supply to both a storage and the peripheral circuits when no image signal is stored in a memory. CONSTITUTION:When no start signal detecting output is applied to the whole output terminals, i.e., there is no used memory (a memory storing picture signal of a photographed picture which has not yet been transferred to an external storing medium, an image signal to be stored), a detecting device 2b sends a detecting signal of low level to the gate of an N channel MOSFETQ1 and turns off the FETQ1. Therefore, electric power can not be supplied from a backup electric power battery E1 with comparatively small capacity to a storage 2a and the detecting device 2b, preventing the battery E1 from unnecessary electric power consumption.</p> |
