公开(公告)号：US4901139A

公开(公告)日：1990-02-13

申请号：US223527

申请日：1988-07-25

Applicant: James H. Wilkinson ,  Ueda Mamoru

Inventor： James H. Wilkinson ,  Ueda Mamoru

IPC: H04M3/58 ,  H04N7/26 ,  H04N7/32 ,  H04N9/804 ,  H04N11/04

CPC classification number: H04N9/8045 ,  H04N11/046 ,  H04N19/50 ,  H04N19/895 ,  H04N19/90

Abstract: In a system in which a digital video signal is transmitted with differential pulse code modulation, a predetermined number of samples alternate in a horizontal line of the digital video signal are grouped, and the center sample of the grouped samples of the digital video signal is transmitted with the original number of bits, while the other samples of a group are differentially modulated with reference to the respective center sample and are transmitted with the center sample as a cluster of samples.

Abstract translation: 在以差分脉冲编码调制方式发送数字视频信号的系统中，在数字视频信号的水平线上交替的预定数量的样本被分组，并且传送数字视频信号的分组采样的中心采样 原始位数，而组的其他样本参考相应的中心样本进行差分调制，并以中心样本作为样本簇发送。