The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 1993
Filed:
Oct. 25, 1989
Makoto Mutoh, Akita, JP;
Yutaka Matsuda, Hiratsuka, JP;
Yusaku Himono, Tokyo, JP;
Osamu Michihira, Hiroshima, JP;
Toshimichi Tokunaga, Hiroshima, JP;
Furukawa Electric Co., Ltd., Tokyo, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A multiplex transmission system for automotive vehicles includes a plurality of communication nodes interconnected via a common multiplex transmission line. Each communication node includes a communication control device for controlling communication among the communication nodes in accordance with a decentralized multiplex protocol, a transmitting device for transmitting a reception acknowledgement signal to the multiplex transmission line upon receiving reception data from the multiplex transmission line normally in a reception mode, a memory device for storing beforehand, as data in table form, reception acknowledgment signals from respective ones of the communication nodes in a predetermined state, a comparator device for comparing, after a transmission, an actual reception acknowledgment signal from each communication node with the data table in a transmission mode, and a re-transmission control device for performing re-transmission control of communication among the communication nodes based on the results of the comparison.