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:
Jul. 11, 1995
Filed:
Dec. 28, 1993
Steven T Barham, Salt Lake City, UT (US);
Samuel C Kingston, Salt Lake City, UT (US);
Harold L Simonson, South Jordan, UT (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A high chipping rate digital demodulator circuit is coupled to the output of an analog front end communications receiver and comprises a low pass filter in each channel of the receiver. The filtered output is coupled to a plurality of parallel branches each having an analog to digital converter which converts a portion of an analog sample to digital format and effectively reduces the system clock rate by a ratio of the number of parallel branches. One set of parallel branches is coupled to an early-late clock error detector circuits and another set of parallel branches is coupled to data signal detector circuits and then combined before being applied to a clock error processing channel and a data signal phase error channel which maintains the lower clock rate of the parallel branches.