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:
Apr. 15, 2008
Filed:
Mar. 17, 2005
Ravindra U. Rajapakse, San Francisco, CA (US);
Leo Shang-hua Chang, San Carlos, CA (US);
Joseph Siufai Chan, Milpitas, CA (US);
Jeyappragash Jeyakeerthi, Santa Clara, CA (US);
Andrew Edward Savige Alcock, Singapore, SG;
Ravindra U. Rajapakse, San Francisco, CA (US);
Leo Shang-Hua Chang, San Carlos, CA (US);
Joseph Siufai Chan, Milpitas, CA (US);
Jeyappragash Jeyakeerthi, Santa Clara, CA (US);
Andrew Edward Savige Alcock, Singapore, SG;
Savi Technology, Inc., Sunnyvale, CA (US);
Abstract
A conveyance tracking system provides two-phase transaction commit processing for synchronizing seal state information between a seal device attached to a conveyance and a host for tracking conveyances. The system uses a reader device for synchronization and communication between the seal device and host system regarding various operations, such as a lock operation, an unlock operation, and a clear tamper operation. In the first phase of the two-phase commit, the seal device prepares for the operation and the host executes the operation. In the second phase, the seal device fulfills the irreversible operation, ensuring that the seal state of the seal device and host are in sync.