Title:
【発明の名称】バイフェーズコード復号方式
Document Type and Number:
Japanese Patent JP2862076
Kind Code:
B2
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.
Inventors:
HIDAKA KENJI
Application Number:
JP12428896A
Publication Date:
February 24, 1999
Filing Date:
May 20, 1996
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H04N9/00; G11B20/14; H03K9/06; H03M5/12; H03M7/00; H04L25/49; (IPC1-7): H03M5/12; H04L25/49; H04N9/00
Domestic Patent References:
| JP6330026A | ||||
| JP61156922A | ||||
| JP6352521A |
Attorney, Agent or Firm:
Yosuke Goto (1 person outside)