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 5805920 B1

Date of Patent:

Sep. 08, 1998

Filed:

Nov. 13, 1995

Direct bulk data transfers

Applicant:

Inventors:

Todd W Sprenkle, Sunnyvale, CA (US);

Srinivasa D Murthy, San Jose, CA (US);

Anil Khatri, San Jose, CA (US);

Assignee:

Tandem Computers Incorporated, Cupertino, CA (US);

Attorney:

Townsend and Townsend and Crew LLP

Primary Examiner:

Tod R Swann

Assistant Examiner:

Felix B Lee

Int. Cl.

CPC ...

G06F / ;

U.S. Cl.

CPC ...

395821 ; 3951821 ;

Abstract

A data processing system for transferring data is provided. This system includes central processing units (CPUs 20, 22, 24 and 26) and storage units (30 and 32 with 100-105 and 110-115) which are interconnected by a network (10). The CPUs (20, 22, 24 and 26) include a request process (133) and a storage process (130). The storage process (130) controls access to the storage unit (30 with 100-105 and 110-115). Software routines (220) are used to provide direct access to the storage unit (30 with 100-105 and 110-115) by the request CPU (22). The request CPU (20) is the CPU containing the request process (133). A virtual memory address for a buffer (160) of the request CPU (22) is created in the request CPU (22). The virtual memory address along with a storage unit access request are sent to the CPU (20) containing the storage process (130). A work request including the virtual memory address to sent from the storage process (130) to the storage unit (30 with 100-105 and 110-115). The data is then transferred directly between the request CPU (22) and the storage unit (30 with 100-105 and 110-115). The storage unit (30 with 100-105 and 110-115) then responds to the work request.

Find Patent Forward Citations

Sprenkle, Todd. (1998). Direct bulk data transfers (U.S. Patent No. 5805920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5805920

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