Abstract: A communication control method for use in a communication system including a plurality of communication control apparatuses interconnected through an information transmission path, each of the communication control apparatuses including a packet transmission/reception unit, a timer unit and a controller unit. When a first communication control apparatus has become unable to perform communication due to accidental power-off or a power supply failure or the like in the course of communication with a second communication control apparatus (which has been brought into a locked state by the first communication control apparatus), the invention prevents the second communication control apparatus from being left permanently in the locked state.
Type:
Grant
Filed:
September 15, 1989
Date of Patent:
July 9, 1991
Assignees:
Matsushita Electric Industrial Co., Ltd., N. V. Philips' Gloeilampenfabricken