Patent Number: 8,880,763

Title: Electronic device

Abstract: A communication system enabling protection at times of serial communication failure without providing a watchdog timer for each of multiple slave control units is provided in a configuration in which a master control unit and multiple slave control units are connected by serial communication. A communication system provided with multiple slave control units 102 that perform transmission and reception of serial data with a master control unit 101 for controlling serial communication and a watchdog timer 105 that simultaneously resets the multiple slave control units 102 is configured such that a watchdog signal from the master control unit 101 is input to the watchdog timer 105 via at least one of multiple serial communication lines.

Inventors: Hata; Yousuke (Ichikawa, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G06F 3/00 (20060101); G06F 13/00 (20060101)

Expiration Date: 2019-11-04 0:00:00