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. 07, 1998
Filed:
Jul. 24, 1995
Tatsuo Hiramatsu, Osaka, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A bi-phase signal is output from BPSK demodulator; by a pair determining circuit and a clock reproducing circuit, a clock signal corresponding to a former half bit of two half bits constituting a data pair of the bi-phase signal is reproduced; a carrier pulse immediately following the clock signal is generated by a carrier extracting circuit; using the carrier pulse and a carrier pulse obtained by delaying the pulse signal by a half bit period as a sampling clock, the bi-phase signal is subjected to AD conversion by AD converting circuit; two AD converted data values different in time are input to a subtraction circuit, and a result of subtraction between data pairs of bi-phase signals is obtained; thus sign of a bi-phase signal is determined.