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:
Mar. 20, 2001
Filed:
Dec. 23, 1997
Farbod Kamgar, Campbell, CA (US);
Mariam Motamed, San Francisco, CA (US);
Antoine Jean Rouphael, Tracy, CA (US);
Philips Electronics North America Corporation, New York, NY (US);
Abstract
A pseudo-noise generator (,) generates an on-time component, an early component and a late component of a pseudo-noise code signal in response to an error signal. The on-time component is routed to a deinterleave and demodulate device (,) which demodulates and decodes baseband signals from received spread spectrum signals. An adder (,) subtracts the early component from the late component to form a summation signal. A multiplier (,) multiplies the summation with the received signal to form a product signal. An integrator (,) integrates the product signal to form the error signal. The error signal is fed back into the pseudo-noise generator (,) to fine tune the on-time component, the early component and the late component of the pseudo-noise code signal. As a result, a spread spectrum signal is demodulated and decoded using only one correlator (,) instead of two.