Toyota Jidosha Kabushiki Kaisha

Nippondenso Co., Ltd.

Toyoda Koki Kabushiki Kaisha

Akira Uchida

Hisanori Nakamura

Toshihiko Yomogida

Katsuhiro Ina

Katsuhisa Tsuji

Goro Kobayashi

Hiroshi Yamakita

Kazuhiro Higuchi

Temperature dependent control module cluster unit for motor vehicle

A branching device to send out data received at an arbitrary one of three terminals thereof through the other two terminals. In the device, the terminals are coupled to each other by means of photo-couplers. The head of a data block received by each receiver connected with each terminal is detected, and after such detection of the head, a signal which specifies the length of the data block is generated. Thus, after communication data are received by way of an arbitrary one of the terminals, reception of communication data by way of the other two terminals is inhibited while transmission of the communication data is enabled in response to the signal specifying the data block detected. Since the transmission lines of the three directions are electrically isolated from each other by the photo-couplers, even when a failure of short-circuiting occurs at a main transmission line or a branch line or the like, communications are continued bypassing the location of the failure similarly as in the case of a failure of breaking of a wire.

Transmission line branching device

Growing community of inventors

Kariya, Japan

Akira Uchida