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:
Jul. 23, 2013
Filed:
Sep. 10, 2008
Gordie Freedman, Palo Alto, CA (US);
Gordie Freedman, Palo Alto, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An apparatus and method of synchronizing a datum between a plurality of stores uses version vectors associated with the datum in each store. Each version vector has one or more entries, and each entry has an identifier and a value. The identifier identifies a store that has modified the datum, and the value indicates a number of modifications to the datum made by the store. When synchronizing the datum between stores, the version vectors of the datum are compared to determine whether one version vector is subordinate to another version vector. The datum in the store having the subordinate version vector is then replaced with the datum having the dominant version vector. When compared, a conflict resolution by a user is required if the version vectors are not identical, if the version vectors do not have all the same identifiers, and if one version vector does not contain all of the identifiers with equal or greater values of those in the other version vector.