Mazda Motor Corporation

Furukawa Electric., Ltd.

Mitsuru Akimoto

Osamu Michihira

Yutaka Matsuda

Seiji Hirano

Kyosuke Hashimoto

Hiroo Moriue

Hiroaki Sakamoto

Koji Terayama

Koji Umegaki

A multiplex transmission system includes a plurality of multiplex nodes interconnected by a common multiplex transmission line. Data frames are transmitted among the multiplex nodes through the multiplex transmission line. A data frame transmitted from a sending multiplex node includes a data area which is divided into subdivided areas in accordance with data transmitted therefrom and data transmitted from receiving multiplex nodes which send data in response to a send request, in accordance with the number of data pieces or the number of bits, and the receiving nodes send data to respective subdivided areas in a predetermined order, to thereby carry out a data transmission. Accordingly, the sending multiplex node can simultaneously collect data from the receiving multiplex nodes which are functionally subordinate. When any of the receiving multiplex nodes fails to return an ACK signal, the sending multiplex node retransmits the data frame.

Multiplex transmission system having plurality of nodes and common

Growing community of inventors

Yokohama, Japan

Mitsuru Akimoto