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:
Dec. 08, 2009
Filed:
Sep. 13, 2004
Ming Benjamin Zhu, Palo Alto, CA (US);
R. Hugo Patterson, Mountain View, CA (US);
Allan J. Bricker, Sunnyvale, CA (US);
Edward K. Lee, Mountain View, CA (US);
Ming Benjamin Zhu, Palo Alto, CA (US);
R. Hugo Patterson, Mountain View, CA (US);
Allan J. Bricker, Sunnyvale, CA (US);
Edward K. Lee, Mountain View, CA (US);
DataDomain, Inc., Santa Clara, CA (US);
Abstract
A method for storing data is disclosed. The method comprises receiving a data stream comprising a plurality of data segments and preliminarily checking in a memory having a relatively low latency whether one of the plurality of data segments has been stored previously. The method further comprises in the event that the preliminary check does not conclusively determine whether the data segment has been stored previously, limiting checking in a memory having a relatively high latency to conclusively determine whether the data segment has been previously stored, and in the event that checking is limited or in the event that the check in the memory having relatively high latency conclusively determines the data segment has not been previously stored, storing the data segment.