Mitsubishi Electric Corporation

Tatsunori Tsujimura

Shigekazu Okamura

Masuo Ito

Hirohito Nishiyama

Daisuke Tanimoto

Makoto Itoi

Yuichi Tokunaga

Yuta Wada

Makoto Isoda

Shuichiro Senda

In an in-vehicle network system (), a parent control unit () and a child control unit () constitute a control unit. In the in-vehicle network system (), a monitoring unit () acquires communication data being communicated between the parent control unit () and the child control unit () and flowing in an in-vehicle network () which connects the parent control unit () and the child control unit () to each other. The monitoring unit () diagnoses an abnormality in the parent control unit () based on the communication data acquired by the monitoring unit () and diagnostic data stored by a memory unit.

Monitoring unit, control system, and computer readable medium

Control information from a plurality of applicationsis written into a shared memoryas needed. A communication parttransmits the control information written in the shared memoryto a DHMin each transmission cycle which is constant. In a management table, a plurality of allowable delay times is defined, the allowable delay time being a delay time allowable at an urgent transmission of the control information. A transmission timing notification partdivides a transmission cycle into time slots each of which is equal to or shorter than the shortest allowable delay time defined in the management table. The communication parttransmits the control information in the shared memoryto the DHMbefore arrival of the transmission cycle, in a unit of time slot.

Communication apparatus, control apparatus, and program

Growing community of inventors

Tokyo, Japan

Tatsunori Tsujimura