公开(公告)号：US4729012A

公开(公告)日：1988-03-01

申请号：US771551

申请日：1985-08-30

申请人： David L. Jose ,  Spyros W. Tsokas ,  Robert A. Dischert

发明人： David L. Jose ,  Spyros W. Tsokas ,  Robert A. Dischert

IPC分类号： H04N5/46 ,  H04N20060101 ,  H04N3/223 ,  H04N5/222 ,  H04N7/00 ,  H04N7/01 ,  H04N7/015 ,  H04N9/64 ,  H04N11/00 ,  H04N11/06 ,  H04N11/20

CPC分类号： H04N7/0122 ,  Y10S348/903

摘要： A wide aspect ratio television system includes memories for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted to restore the signal to its original aspect ratio. The pattern of deleted pulses is altered on a line-by-line basis to reduce visible artifacts of signal decimation. Dual mode receivers include provisions for controlling edge blanking, interpolation and the pattern of clock pulses deleted as a function of received signals. Wide and standard aspect ratio images are displayed without altering the width of the display raster.

摘要翻译： 大宽高比电视系统包括分别响应于读和写时钟脉冲存储和恢复视频输入信号的存储器。 写入时钟脉冲被删除以压缩宽宽比输入信号的边缘区域，并且删除读取时钟脉冲以将信号恢复到其原始宽高比。 删除的脉冲的模式在逐行的基础上被改变，以减少信号抽取的可见伪像。 双模式接收器包括用于控制边沿消隐，内插和作为接收信号的函数被删除的时钟脉冲的模式的规定。 在不改变显示栅格宽度的情况下显示宽和标准宽高比图像。