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:
May. 03, 2011
Filed:
Jul. 05, 2004
Muralikrishna Srikantiah, Bangalore, IN;
Nagaraj Channarayapatna Shivaramaiah, Bangalore, IN;
Muralikrishna Srikantiah, Bangalore, IN;
Nagaraj Channarayapatna Shivaramaiah, Bangalore, IN;
Accord Software & Systems Pvt. Ltd., Bangalore, IN;
Abstract
A system and method of achieving a reduced time for first fix in a global positioning system receiver (GPS). The GPS receiver includes a low gate count sequential multitap correlator () in combination with a digital signal processor () and a down converter (). The low gate count sequential multitap correlator () conducts sequential correlation on the incoming GPS signals using a multitapping and pipelining scheme. The multitapping process involves tapping the shift register and simultaneously correlating the signal samples and tapped chips. The pipelining process includes sampling data, mapping incoming samples, shifting carrier acquisition code, multiplying and accumulating the code and signal products. The digital signal processor conducts the frequency search.