| 摘要 |
<p>PURPOSE:To prevent shooting error in the case of camera recording by providing a consumption degree deciding means for a backup battery and the display means of a decided result due to the consumption degree deciding means. CONSTITUTION:A function adding device 1 is equipped with a connector 2 for connection to an external device, synchronizing separator circuit 3, memory controller 4, AD (analog/digital) conversion circuit 5, S-RAM 6, diodes 7 and 8, consumption degree deciding circuit 9, display device 10 and backup battery 11. Therefore, even in the state of unloading the device to the external device, the degree of consuming the inside backup battery 11 can be clearly displayed for a user. Thus, the stored information of the S-RAM can be prevented beforehand from being erased by exhausting the backup battery 11, and the shooting error of the camera can be prevented as well.</p> |
