发明名称 |
Upsampling filter and half-pixel generator for an HDTV downconversion system |
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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申请公布号 |
US6184935(B1) |
申请公布日期 |
2001.02.06 |
申请号 |
US19990180081 |
申请日期 |
1999.03.29 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL, CO. LTD. |
发明人 |
IAQUINTO MICHAEL;KIM HEE-YONG;MEYER EDWIN ROBERT;EGAWA REN |
分类号 |
H04N7/32;G06T1/60;G06T3/40;G06T9/00;H04N5/44;H04N5/46;H04N7/01;H04N7/015;H04N7/26;H04N7/30;H04N7/46;H04N7/50;H04N9/64;(IPC1-7):H04N7/26 |
主分类号 |
H04N7/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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