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. 15, 2006
Filed:
Mar. 23, 2001
Lap Shing Chan, Tokyo, JP;
Shuji Murakami, Tokyo, JP;
Lap Shing Chan, Tokyo, JP;
Shuji Murakami, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A BPSK phase detection unit assumes that an input signal is a BPSK modulated signal in detecting a phase error of a recovered carrier and an 8PSK phase detection unit assumes that the input signal is an 8PSK modulated signal in detecting the phase error of the recovered carrier. An 8PSK frequency detection unit assumes that the input signal is an 8PSK modulated signal in detecting a frequency error of the recovered carrier. A selector selects the phase error detected by the BPSK phase detection unit or the phase error detected by the 8PSK phase detection unit. A carrier recovery unit recovers a carrier by adjusting a phase of the input signal, based on the selected phase error and the frequency error.