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.:

US 7930445 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 19, 2011

Filed:

Sep. 05, 2007
Applicants:

Jun Okitsu, Kodaira, JP;

Yoshiko Yasuda, Tokorozawa, JP;

Takashige Baba, Kodaira, JP;

Inventors:

Jun Okitsu, Kodaira, JP;

Yoshiko Yasuda, Tokorozawa, JP;

Takashige Baba, Kodaira, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/28 (2006.01); G06F 15/16 (2006.01); G06F 15/167 (2006.01);
U.S. Cl.
CPC ...
Abstract

To improve throughput in data transfer in a remote I/O system, this invention provides a computer system including: a host computer; a device which communicates with the host computer; and a network which connects the host computer and the device, in which the device is coupled to the network via a device bridge including a bridge memory, and the host computer includes a host memory and a device driver. The device driver writes, when at least one of data and an address is written in the host memory, in the bridge memory the at least one of the data and address stored through the writing in the host memory; and sends a data transfer request to the device bridge, and the device bridge reads, upon reception of the data transfer request, an address from a predetermined area; and reads data from an area that is indicated by the read address.


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