| 摘要 |
PURPOSE:To effectively use a calling information storage part without erasing useful calling information stored in the calling information storage part by comparing a stored message signal with a received and detected message signal and storing and holding the received message signal when it is judged that both the compared signals are different. CONSTITUTION:A first message signal A is stored in a sub storage part 7, and a stored content is sent to a comparing part 10. When the second call is received, and a calling number is detected in the comparing part 10, the message content of the sub storage part 7 is memory-shifted to a first main storage part 8. Next, the message signal A of the second call is inputted to the sub storage part 7, and the stored content of the sub storage part 7 is compared with the stored content of either the main storage part 8 or a main storage part 9 in the comparing part 10. When the stored content of either the main storage part 8 or the main storage part 9 is the same as the stored content of the sub storage part 7, only the stored content of the sub storage part 7 is updated by the next message signal A. Thus, when the same call is received, the storage from past time is never erased, and the calling information storage part can effectively be used. |
