公开(公告)号：US5793426A

公开(公告)日：1998-08-11

申请号：US669064

申请日：1996-06-24

申请人： Philip S. Crosby ,  T. Naveen ,  Ali Tabatahai ,  Charles H. Van Dusen

发明人： Philip S. Crosby ,  T. Naveen ,  Ali Tabatahai ,  Charles H. Van Dusen

IPC分类号： H04N7/083 ,  H04N7/12

CPC分类号： H04N7/083

摘要： An enhanced video data compressor has a composite video signal decoder that changes the state of a field identification signal in response to a vertical interval indicator in composite video data which is in a digital video format. Thereafter a vertical timing pulse is generated to prepare a compression encoder to acquire data. By counting lines from the vertical timing pulse the decoder sets a horizontal timing signal at a one macroblock line interval prior to active video data so that the compression encoder acquires video data from the vertical interval as well as active video data. At the end of each field the acquired data is processed by the compression encoder to produce compressed video data.

摘要翻译： 增强型视频数据压缩器具有复合视频信号解码器，其响应于处于数字视频格式的复合视频数据中的垂直间隔指示符而改变场识别信号的状态。 此后产生垂直定时脉冲以准备压缩编码器以获取数据。 通过从垂直定时脉冲计数线，解码器在有效视频数据之前以一个宏块行间隔设置水平定时信号，使得压缩编码器从垂直间隔获取视频数据以及活动视频数据。 在每个场的结尾，所采集的数据由压缩编码器处理以产生压缩的视频数据。