公开(公告)号：US3909518A

公开(公告)日：1975-09-30

申请号：US47710374

申请日：1974-06-06

Applicant: RCA CORP

Inventor： BAKER ALFRED LYNN

IPC: H04N5/94 ,  G11B20/06 ,  H04N9/882 ,  H04N5/76

CPC classification number: H04N9/882

Abstract: In a defect compensation system for a video disc player, stretched versions of defect indication pulses are obtained in a switching control signal generator employing an envelope detector, and a comparator referencing the detector output against a selected threshold voltage. A pair of complementary outputs developed by the comparator are applied to the bases of a pair of serially disposed transistors in respective normal and substitution signal channels, driving one to cutoff and the other to inverted mode saturation, or vice versa.

Abstract translation: 在用于视盘播放机的缺陷补偿系统中，在采用包络检测器的开关控制信号发生器中获得缺陷指示脉冲的延伸版本，以及参考所选择的阈值电压的检测器输出的比较器。 由比较器开发的一对互补输出被施加到相应的正常和替换信号通道中的一对串联设置的晶体管的基极，驱动一个到截止，另一个转换为反相模式饱和，反之亦然。