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:
Aug. 28, 2012
Filed:
Dec. 02, 2008
Yung-chih Liu, Taipei, TW;
Yung-Chih Liu, Taipei, TW;
Institute for Information Industry, Taipei, TW;
Abstract
A packet transmission system, a packet transmission method, a packet update method, a host apparatus, and a computer program product thereof for the packet transmission system are provided. The packet transmission method comprises the following steps: transmitting a first positioning packet that has a first message serial number; receiving the first positioning packet; generating a temporary packet that has a second message serial number; determining that the first message serial number is smaller than the second message serial number; transmitting the temporary packet; receiving the temporary packet and updating the first message serial as the second message serial number; and transmitting a second positioning packet that has the second message serial number. Thereby, the system not only prevents repeat transmission, but also enhances positioning reliability by using two-way transmission.