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:
Sep. 07, 2004
Filed:
Sep. 26, 2000
Raymond D. Pedrizetti, Issaquah, WA (US);
Scott D. Quinn, Issaquah, WA (US);
Timothy W. Bragg, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A low bandwidth link can be used optimally for software updates, by successively transferring more information about the updates only as the likelihood of an applicable update successively increases. A many-to-one mapping function (e.g. a hash function) is applied to update identifiers on a server to generate a table of single bit entries corresponding to the updates. At a client, the same mapping function is applied to program identifiers to determine whether the server has a potential update. If a potential update is noted, a second transmission is requested for conveying additional data from the server by which hash collisions can be identified. A third transmission from the server is received conveying the actual update only after the availability of an actual update (versus a hash collision) is confirmed. The same arrangement can be employed in reverse.