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:
Feb. 24, 2004
Filed:
Feb. 18, 2000
Applicant:
Inventors:
Daisuke Arai, Kanagawa, JP;
Masahiro Uno, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 2/706 ;
U.S. Cl.
CPC ...
H04L 2/706 ;
Abstract
Apparatus for carrying out correction of a received frequency at a time of receiving a digitally modulated signal includes a phase judging circuit for judging a phase of a received signal symbol in terms of a predetermined number of quantization, a phase difference detecting circuit for detecting a phase difference between phase judged samples judged by the phase judging circuit and an averaging circuit for averaging a detecting output of the phase difference detecting circuit, whereby it is possible to control an output frequency of a frequency synthesizer based on the averaging circuit output.