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1.发明授权UPSAMPLING FILTER AND HALF-PIXEL GENERATOR FOR AN HDTV DOWNCONVERSION SYSTEM 失效AUFWÄRTSABTASTERFILTER和字段元发生器高分辨率电视实现DOWN SYSTEM
公开(公告)号：EP0908057B1
公开(公告)日：2004-03-03
申请号：EP98910309.8
申请日：1998-03-11
CPC分类号： H04N9/64 , G06T1/60 , G06T3/4023 , G06T3/4084 , H04N5/4401 , H04N5/46 , H04N7/0122 , H04N7/0125 , H04N7/014 , H04N7/015 , H04N19/132 , H04N19/162 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/423 , H04N19/428 , H04N19/44 , H04N19/523 , H04N19/527 , H04N19/59 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/85 , H04N19/86
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2.发明公开UPSAMPLING FILTER AND HALF-PIXEL GENERATOR FOR AN HDTV DOWNCONVERSION SYSTEM 失效AUFWÄRTSABTASTERFILTER和字段元发生器高分辨率电视实现DOWN SYSTEM
公开(公告)号：EP0908057A1
公开(公告)日：1999-04-14
申请号：EP98910309.0
申请日：1998-03-11
CPC分类号： H04N9/64 , G06T1/60 , G06T3/4023 , G06T3/4084 , H04N5/4401 , H04N5/46 , H04N7/0122 , H04N7/0125 , H04N7/014 , H04N7/015 , H04N19/132 , H04N19/162 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/423 , H04N19/428 , H04N19/44 , H04N19/523 , H04N19/527 , H04N19/59 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/85 , H04N19/86
摘要： A video down conversion system compliant with the Advanced Television Systems Standard (ATSC) includes a decoder which decodes a Main Profile, High Level (MP@HL) image and employs a downconversion processor to produce a standard definition video signal. The system stores a subsampled image in order to reduce memory requirements and employs an upsampling filter to generate reference image data from the stored, subsampled image. The reference image data spatially correspond to the image data produced by the video decoder before it is subsampled. The upsampling filter uses different filter coefficients based on the subsampling phase of the stored image and the half-pixel indicator in the motion vector which is used to locate the downsampled reference image data in the stored subsampled image.
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公开(公告)号：EP0901735A1
公开(公告)日：1999-03-17
申请号：EP98911567.0
申请日：1998-03-11
发明人： KIM, Hee-Yong , NAIMPALLY, Saiprasad , MEYER, Edwin, Robert , SITA, Richard , PHILLIPS, Larry , EGAWA, Ren
CPC分类号： H04N9/64 , G06T1/60 , G06T3/4023 , G06T3/4084 , H04N5/4401 , H04N5/46 , H04N7/0122 , H04N7/0125 , H04N7/014 , H04N7/015 , H04N19/132 , H04N19/162 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/423 , H04N19/428 , H04N19/44 , H04N19/523 , H04N19/527 , H04N19/59 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/85 , H04N19/86
摘要： A video decoder compliant with the Advanced Television Systems Standard (ATSC) includes circuitry which decodes an ATSC encoded image and employs a downconversion process to produce a standard definition video signal. The video decoder includes a frequency-domain filter to reduce the resolution of the ATSC encoded signal. The video decoder downconversion system also includes a formatting section having vertical and horizontal filters, as well as resampling processing, to format the decoded and downconverted video image for a particular display and aspect ratio. The decoder senses the display format of the encoded video signal and changes the processing provided by the decoder to produce a standard definition output signal regardless of the display format of the encoded input signal. The system also includes a format converter which may be programmed to use a plurality of methods to convert the aspect ratio of the input signal for display on a display device having a different aspect ratio. In one mode, the system sequences through the possible methods to allow the user to select one method.
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