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:
Nov. 11, 2008
Filed:
Mar. 16, 2006
Joe P. Cowan, Ft. Collins, CO (US);
Matthew B. Lovell, Ft. Collins, CO (US);
Leith L. Johnson, Ft. Collins, CO (US);
Jonathan K. Ross, Bellevue, WA (US);
Joe P. Cowan, Ft. Collins, CO (US);
Matthew B. Lovell, Ft. Collins, CO (US);
Leith L. Johnson, Ft. Collins, CO (US);
Jonathan K. Ross, Bellevue, WA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Method and apparatus for allowing a direct memory access unit to have access to a virtual address space is accomplished by receiving a request for memory access from the direct memory access device; determining a device identifier according to the received request for memory access; determining a memory protection schema according to the determined device identifier; and granting the direct memory access unit access to memory in accordance with the determined memory protection schema.