公开(公告)号：US5010405A

公开(公告)日：1991-04-23

申请号：US305796

申请日：1989-02-02

申请人： William F. Schreiber ,  Andrew B. Lippman ,  Edward H. Adelson ,  Aran N. Netravali

发明人： William F. Schreiber ,  Andrew B. Lippman ,  Edward H. Adelson ,  Aran N. Netravali

IPC分类号： H04N7/00 ,  H04N7/08 ,  H04N7/26 ,  H04N11/24

CPC分类号： H04N7/007 ,  H04N11/006 ,  H04N19/186 ,  H04N19/63 ,  H04N7/08

摘要： A television encoder for generating a receiver-compatible signal from a production video signal containing enhancement information which cannot be displayed on a standard receiver, the receiver-compatible signal being compatible with the standard receiver, the encoder including a filter bank for dividing the video signal into at least two groups of spatial frequency components including a first group and a second group, the first group containing members which when combined together form a standard video signal which is displayed by the standard receiver and the second group containing the enhancement information; a quantizer for quantizing at least one member of the first group; a combiner for adding at least one member of the second group to a quantized member of the first group to produce a modified first group; and a synthesizer for combining the members of the modified first group to generate the receiver-compatible signal.

摘要翻译： 一种电视编码器，用于从包含不能在标准接收机上显示的增强信息的生产视频信号产生接收机兼容信号，所述接收机兼容信号与标准接收机兼容，所述编码器包括用于分割视频信号的滤波器组 进入至少两组包括第一组和第二组的空间频率分量，所述第一组包括当组合在一起时形成由标准接收机显示的标准视频信号和包含增强信息的第二组的成员; 量化器，用于量化第一组中的至少一个成员; 组合器，用于将第二组的至少一个成员添加到第一组的量化成员以产生修改的第一组; 以及合成器，用于组合经修改的第一组的成员以产生接收机兼容的信号。