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:
Oct. 16, 2007
Filed:
Sep. 22, 2006
Applicants:
Toshiyuki Nakagawa, Kanagawa, JP;
Yoshihide Shimpuku, Kanagawa, JP;
Tatsuya Narahara, Kanagawa, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 14/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital sync signal added in a modulator to a train of codes having a digital sum value, and detected in a demodulator. The digital sync signal has a pattern that breaks a maximum run and a pattern that preserves a minimum run and a maximum run. The digital sync signal has a bit that is selectively determined to be a '0' or a '1' for controlling the digital sum value of the train of codes. The minimum run is repeated no more than a predetermined number of times irrespective of whether the digital sync signal includes the minimum run.