The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2007
Filed:
Apr. 16, 2004
Mutsumi Hosoya, Fujimi, JP;
Naoki Watanabe, Hachioji, JP;
Shuji Nakamura, Yokohama, JP;
Yasuo Inoue, Odawara, JP;
Kazuhisa Fujimoto, Kokubunji, JP;
Mutsumi Hosoya, Fujimi, JP;
Naoki Watanabe, Hachioji, JP;
Shuji Nakamura, Yokohama, JP;
Yasuo Inoue, Odawara, JP;
Kazuhisa Fujimoto, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A disk controller has a channel adapter having a connection interface to a host computer or a disk drive; a memory adapter for temporarily storing data to be transferred between the host computer and disk drive; a processor adapter for controlling operations of the channel adapter and memory adapter; and a switch adapter for configuring an inner network by interconnecting the channel adapter, memory adapter and processor adapter, wherein the channel adapter, memory adapter, processor adapter and switch adapter each include a DMA controller for performing a communication protocol control of the inner network; and packet multiplex communication is performed among the DMA controllers provided in the adapters. The disk controller can realize a high transfer efficiency and a low cost while retaining a high reliability.