Renesas Electronics Corporation

Yuichi Iwaya

Tatsuya Ishikawa

Hiroyuki Ikeda

Norihiko Ishizaki

Minoru Uemura

Yoshiaki Daimon

It is possible to update firmware of domain masters during travelling. An in-vehicle communication system includes a plurality of domain masters, and a redundant domain master configured to be able to perform alternative operations of the plurality of domain masters. The domain masters transmits operation information to the redundant domain master prior to update of firmware. The redundant domain master executes the alternative operation of the domain master using the received operation information. The domain master receives, after the update of the firmware, operation information generated in the alternative operation from the redundant domain master and operates in the updated firmware.

In-vehicle communication system, domain master, and firmware update method

In a system using a device not adapted to a single wire bus, a semiconductor device includes an external terminal to be coupled to a power source terminal of an external device, a port that supplies a power source voltage for the external device to the external terminal, a power manager that controls an output of the port, and a CPU that controls an operation of the power manager.

Growing community of inventors

Tokyo, Japan

Yuichi Iwaya