Automobile multiplex data communication system including fail-safe function for LAN communication network

U.S. Patent Number: 5384765

Abstract: In an automobile multiplex data communication system (1000), a fail-safe function is established without providing a specific function switch. The automobile multiplex data communication system (1000) includes: transmission means (3:11:101:901) for transmitting operation data about a plurality of operation units (2a:106:204:704) provided with a plurality of terminal units (1a:202:602:902) corresponding thereto, which are required to operate an automobile; drive means (4:420) for driving a relevant terminal unit (1a:202:602:902) in response to said operation data; detecting means (5:410) for detecting an extraordinary state concerning transmission/reception operations of said operation data to produce an extraordinary-state detection signal; and control means (6:12) for independently controlling the operation of said relevant terminal unit (1a:202:602:902) by AND-gating said extraordinary-state detection signal and each of operation outputs derived from said operation units.

Inventors: Sakagami; Atsushi (Yokohama, JP), Watanabe; Shizuhisa (Katsuta, JP), Sugiura; Kazumasa (Katsuta, JP), Oho; Shigeru (Hitachi, JP)

Assignee: Nissan Motor Co., Ltd. (Yokohama, JP)

Application Number: 08/037,116

Issued: 1995-01-24

Expired: 2007-01-24

Classes: 340/458 ; 340/459; 340/602; 370/216

Field of search: 340/457.2,458,438,459,464,600,601,602,870.13,870.14 370/85.1,85.9,85.11,13,16 371/8.2,11.2

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