Hitachi, Ltd.

Hitachi Software Engineering Company, Ltd.

Yasunori Yamada

Yasuhiko Sasaki

Shigeo Ohashi

Yoshihiro Kondo

Tsuyoshi Nakagawa

Takashi Naganawa

Rintaro Minamitani

Shinji Matsushita

Yuji Yoshitomi

Masato Nakanishi

Nobuyuki Hayashi

Kazuhiko Matsumoto

Kaoru Moriwaki

Takao Shinsha

Takahiro Nakata

Hiromoto Sakaki

Junji Koshishita

Miyako Tandai

An electronic module which is detachably mounted on electronic equipment. The electronic module includes a board having a heat generator mounted on a surface thereof, and a cooling jacket which is integrally attached to the electronic module. The cooling jacket is thermally coupled to the heat generator and has a passage of a cooling fluid therewithin.

Electronic equipment

A plurality of electronic apparatuses, each apparatus having a closed loop cooling system, are installed in a cabinet having another closed loop fluid cooling system. Each of the closed loop fluid cooling systems includes a heat receiver and a pump. A projection is mounted on the electronic apparatus and a switching valve is arranged on the cabinet to stop or start circulation of a cooling fluid.

An incremental logic synthesis system for generating an optimized circuit from given logic, wherein the optimized circuit satisfies a design constriction. The system includes a logic input device for inputting an old logic, an old circuit generated from the old logic and optimized to satisfy the design constriction, and a new logic partially changing from the old logic file, a logic synthesizing device for generating a first intermediate circuit file from the new logic file, a discriminating device for discriminating a common sub-circuit of the old circuit having an equivalent logic function and an uncommon sub-circuit of the first intermediate circuit having an inconsistent logic function, from the old circuit and the first intermediate circuit, a circuit updating device for generating a second intermediate circuit file by merging the common sub-circuit of the old circuit and the uncommon sub-circuit of the first intermediate circuit, and an optimizing device for optimizing the uncommon sub-circuit of the second intermediate circuit so as to satisfy the design constriction.

Logic synthesis method and system with intermediate circuit files

Growing community of inventors

Hadano, Japan

Yasunori Yamada