Method and apparatus for scaling and filtering of video information for use in a digital system
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United States of America Patent
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May 16, 2000
Grant Date -
N/A
app pub date -
Sep 11, 1998
filing date -
Sep 11, 1998
priority date (Note) -
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Abstract
Video information which is organized in a first format is converted to a second format by first scaling the video information to produce scaled video information and then color correcting the scaled video information to produce color corrected video information at a network server. Scaling the video information may be accomplished by first applying a vertical scaling process to the video information to produce vertically scaled video information. Second, an anti-flicker filter may be applied to the vertically scaled video information to produce the scaled video information. The vertical scaling process includes a pixel-by-pixel conversion process wherein, for each group of six scan lines in a frame of the video information, color information for individual pixels which make up the group of six scan lines is scaled to provide color information for pixels in a corresponding group of five scan lines of a frame of the vertically scaled video information. The anti-flicker filter comprises a pixel-by-pixel conversion process wherein for each group of three scan lines in a frame of the vertically scaled video information, color information for individual pixels which make up the three scan lines is scaled to provide color information for pixels in a corresponding scan line of a frame of the scaled video information. Color correcting the scaled video information generally comprises converting R-G-B color information of the scaled video information to Y-U-V color information. The color corrected video information may then be transmitted to a network client via a wireless communication link.
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Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| CIRRUS LOGIC INC | 800 WEST 6TH STREET AUSTIN TX 78701 |
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Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Harwood, Joseph D | Milpitas, CA | 11 | 185 |
| Phan, Michael H | Antelope, CA | 1 | 44 |
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| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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