公开(公告)号：EP0103488A3

公开(公告)日：1986-06-25

申请号：EP83305384

申请日：1983-09-14

申请人： NEW YORK INSTITUTE OF TECHNOLOGY

发明人： Glenn, William E. ,  Dhein, Robert L.

IPC分类号： H04N09/02

CPC分类号： H04N9/87 ,  F02B2075/027 ,  H04N5/772 ,  H04N5/9205 ,  H04N7/01 ,  H04N7/012 ,  H04N9/797 ,  H04N11/002

摘要： This concerns an apparatus and method for encoding and/or decoding video signals for use in a compatible high definition television system or in other applications. In a form of the disclosure there is provided an encoder which includes means (300) for storing an input frame as an array of digital pixel values, and means (600) for interrogating the stored array and for generating a sum signal (I) and at least one difference signal (X, Y, Z). The sum signal is representative of the sum of the pixel values in a group of pixels. The difference signal (e.g. X n ) is representative of the difference between thetotal of the pixel values in some of the pixels (Ao n , Bo n ) in the group and the total of the pixel values of other pixels (A in , Bin) in the group. The sum signal and the difference signal are generated for a multiplicity of groups which cover the video frame. The sum signal is generated at a relatively high information refresh rate and the difference signal is generated at a relatively low information refresh rate. The decoder includes means for storing the sum signal and each of the difference signals, and means for combining the sum and difference signals to obtain an output pixel value for each pixel of an output video frame. In another form of the invention (Fig. 20), electronic processing is performed to obtain low and high spatial frequency component representations of the image represented by the video signal, and these are stored in a digital memory in the encoder. Output frames of the low spatial frequency component representation are produced at a fast frame refresh rate, and output frames of the high spatial frequency component representation are produced at a slow frame refresh rate.

公开(公告)号：EP0103488B1

公开(公告)日：1991-03-27

申请号：EP83305384.6

申请日：1983-09-14

申请人： NEW YORK INSTITUTE OF TECHNOLOGY

发明人： Glenn, William E. ,  Dhein, Robert L.

IPC分类号： H04N11/00

CPC分类号： H04N9/87 ,  F02B2075/027 ,  H04N5/772 ,  H04N5/9205 ,  H04N7/01 ,  H04N7/012 ,  H04N9/797 ,  H04N11/002

公开(公告)号：EP0103488A2

公开(公告)日：1984-03-21

申请号：EP83305384.6

申请日：1983-09-14

申请人： NEW YORK INSTITUTE OF TECHNOLOGY

发明人： Glenn, William E. ,  Dhein, Robert L.

IPC分类号： H04N11/00

CPC分类号： H04N9/87 ,  F02B2075/027 ,  H04N5/772 ,  H04N5/9205 ,  H04N7/01 ,  H04N7/012 ,  H04N9/797 ,  H04N11/002

摘要： This concerns an apparatus and method for encoding and/or decoding video signals for use in a compatible high definition television system or in other applications. In a form of the disclosure there is provided an encoder which includes means (300) for storing an input frame as an array of digital pixel values, and means (600) for interrogating the stored array and for generating a sum signal (I) and at least one difference signal (X, Y, Z). The sum signal is representative of the sum of the pixel values in a group of pixels. The difference signal (e.g. X n ) is representative of the difference between thetotal of the pixel values in some of the pixels (Ao n , Bo n ) in the group and the total of the pixel values of other pixels (A in , Bin) in the group. The sum signal and the difference signal are generated for a multiplicity of groups which cover the video frame. The sum signal is generated at a relatively high information refresh rate and the difference signal is generated at a relatively low information refresh rate. The decoder includes means for storing the sum signal and each of the difference signals, and means for combining the sum and difference signals to obtain an output pixel value for each pixel of an output video frame. In another form of the invention (Fig. 20), electronic processing is performed to obtain low and high spatial frequency component representations of the image represented by the video signal, and these are stored in a digital memory in the encoder. Output frames of the low spatial frequency component representation are produced at a fast frame refresh rate, and output frames of the high spatial frequency component representation are produced at a slow frame refresh rate.

摘要翻译： 这涉及用于在兼容的高清晰度电视系统或其它应用中使用的用于编码和/或解码视频信号的装置和方法。 在本公开的形式中，提供了一种编码器，其包括用于存储作为数字像素值阵列的输入帧的装置（300），以及用于询问所存储的阵列并用于产生和信号（I）和 至少一个差信号（X，Y，Z）。 和信号表示一组像素中的像素值的和。 差分信号（例如Xn）表示组中的一些像素（A0n，B0n）中的像素值的总和与组中的其他像素（A1n，B1n）的像素值的总和之间的差 。 对于覆盖视频帧的多个组生成和信号和差分信号。 以相对较高的信息刷新率产生和信号，并且以相对低的信息刷新率产生差分信号。 解码器包括用于存储和信号和每个差分信号的装置。 以及用于组合所述和和信号以获得输出视频帧的每个像素的输出像素值的装置。 在本发明的另一形式中，执行电子处理以获得由视频信号表示的图像的低和高空间频率分量表示，并将它们存储在编码器中的数字存储器中。 以快速帧刷新率产生低空间频率分量表示的输出帧，并且以较慢的帧刷新率产生高空间频率分量表示的输出帧。