公开(公告)号：US4578719A

公开(公告)日：1986-03-25

申请号：US679035

申请日：1984-12-06

申请人： Jurgen Heitmann ,  Rolf Loos ,  Peter Wagner

发明人： Jurgen Heitmann ,  Rolf Loos ,  Peter Wagner

IPC分类号： G11B5/588 ,  G11B27/36 ,  G11B21/10

CPC分类号： G11B5/588

摘要： A conventional multiple recognition unit provides a multiple error signal whenever digitally coded television signals supplied in successive data blocks to the error recognition unit finds by reference to check-words that the error correction capabilities of the unit are exceeded in any data block. In order to determine when such multiple errors are related to faulty tracking, the multiple error signals are prolonged in duration, overlaps between the multiple error signal and a preceding prolonged signal are detected, and the latter are then integrated. The level of the integrated signal determines the likelihood or presence of tracking error.

摘要翻译： 传统的多重识别单元，只要在连续的数据块中提供的数字编码的电视信号到错误识别单元通过参考检查词来查找在任何数据块中超过了单元的纠错能力，就提供多个误差信号。 为了确定这样的多个误差何时与故障跟踪相关，多个误差信号在持续时间上延长，检测到多个误差信号与先前的延迟信号之间的重叠，然后将后一个积分。 积分信号的电平决定了跟踪误差的可能性或存在。