| 摘要 |
PROBLEM TO BE SOLVED: To provide a doorphone system capable of efficiently and securely updating storage contents of a nonvolatile memory with a control program and data stored. SOLUTION: The camera attached video doorphone system includes a camera attached doorphone slave unit 1 installed outdoors and a monitor attached doorphone master unit 7 installed indoors. When the power supply is applied to the monitor attached doorphone master unit 7, when a memory card 21 is inserted to a memory card slot part 18 and the memory card 21 stores a file suitable for update of a flash memory part 19, a system control microphone unit 16 executes processing of updating the information recorded in the flash memory part 19. COPYRIGHT: (C)2006,JPO&NCIPI
|
