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. 03, 2012
Filed:
Dec. 30, 2009
Xiaoguang Yu, Chengdu, CN;
Haiquan Huang, Wuhan, CN;
Jinghua Zou, Wuhan, CN;
Lin LI, Chengdu, CN;
BO Yu, Chengdu, CN;
Weihua Zhang, Chengdu, CN;
Lie LU, Chengdu, CN;
Xiaoguang Yu, Chengdu, CN;
Haiquan Huang, Wuhan, CN;
Jinghua Zou, Wuhan, CN;
Lin Li, Chengdu, CN;
Bo Yu, Chengdu, CN;
Weihua Zhang, Chengdu, CN;
Lie Lu, Chengdu, CN;
O2Micro International, Ltd., Grand Cayman, KY;
Abstract
A signal processing system for demodulating navigation bits from a satellite signal is disclosed herein. The signal processing system includes a digital baseband processor for determining a boundary between two navigation bits in the navigation bits according to a first plurality of coarse acquisition (C/A) codes captured from the satellite signals, storing the first plurality of C/A codes, and demodulating a second plurality of C/A codes captured after determining the boundary to recover a first series of the navigation bits. The signal processing system further includes a complementary demodulating unit coupled to the digital baseband processor for demodulating the first plurality of C/A codes to recover a second series of the navigation bits.