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:
Sep. 14, 1999
Filed:
May. 20, 1997
Kenji Hidaka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A horizontal period counter 3 determines one bit period of bi-phase codes by measuring the period of a horizontal scan line immediately preceding one containing bi-phase codes to be decoded. An edge pulse generator 6 generates edge pulses at rising and falling edges of inputted bi-phase codes. A compensating pulse generator 7 is triggered by the edge pulse and generates a compensating pulse in a predetermined period, which is shorter than one bit period of the bi-phase codes and longer than one half bit period, according to one bit period that has been determined. A rise judging circuit 11 generates sampling pulses by superimposing compensating pulses on the edge pulses. The bi-phase codes are decoded according to the sampling pulses.