Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Yuichi Tokunaga

Hitoshi Ishida

Hiroyuki Fukuda

Minoru Shiga

Toyohito Hatashita

Shunyo Minesaki

Shigekazu Okamura

Masuo Ito

Hirohito Nishiyama

Daisuke Tanimoto

Hiroyuki Tsuji

Keisuke Morita

Makoto Itoi

Mitsuhiro Mimura

Yuta Wada

Tatsunori Tsujimura

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

An increase in the number of signal lines of a control apparatus for controlling devices of an automobile can be prevented and safety of the automobile can be secured. An in-vehicle communication system includes an input DHM that obtains device data from an input device, a BCM that generates control data for controlling an output device based on a value of the device data, and an output DHM that controls the output device according to the control data. The input DHM is composed of duplexed input control blocks, duplexed input shared memories, and an input NW control block. The BCM is composed of a BCM_NW control block, duplexed BCM shared memories for different intended uses, and duplexed arithmetic blocks. The output DHM is composed of an output NW control block, duplexed output shared memories, duplexed output control blocks, and a matching circuit.

In-vehicle communication system and in-vehicle communication method

A current controller for controlling a current supplied to a contact having an external power supply, includes a contact monitoring unit for monitoring the opening and the closing of the contact, a logical computing unit for analyzing a transition of the contact based on the monitoring result from the contact monitoring unit, and a short-circuit unit for short-circuiting the input route based on a direction from the logical computing unit. The logical computing unit turns on the short-circuit unit when the logical computing unit detects chattering at the opening of the contact, and turns off the short-circuit unit after the chattering ends at the closing of the contact.

Current controller for contact and a controlling method for contact

A fault tolerant computer which executes the cache flush operation at a high speed and has the real time characteristic. A processor module is equipped with a cache memory so that the entry address of the updated cache block within the cache memory is stored in a stack. The cache flush is effected only with respect to the entry address in the stack when a recovery-point setting condition due to a timer or the like is satisfied. A memory module has an arrangement doubled in the same storage physical space and is equipped with a buffer memory for temporarily storing the transferred cache block, so that the cache block is simultaneously transferred to a pair of buffer memories.

Cache controller fault tolerant computer and data transfer system

A fault tolerant computer which executes the cache flush operation at a high speed and has the real time characteristic. A processor module 301 is equipped with a cache memory so that the entry address of the updated cache block within the cache memory is stored in a stack. The cache flush is effected only with respect to the entry address in the stack when a recovery-point setting condition due to a timer or the like is satisfied. A memory module 303 has an arrangement doubled in the same storage physical space and is equipped with a buffer memory for temporarily storing the transferred cache block, so that the cache block is simultaneously transferred to a pair of buffer memories.

System for performing cache flush transactions from interconnected

Cache controller with index stack for coherency fault tolerance

Growing community of inventors

Tokyo, Japan

Yuichi Tokunaga