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James M. Rafferty Patents |
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Inventor: Rafferty; James M.
Address: Redwood City, CA
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5377018 |
Video compression and decompression using block selection and subdivision |
December 27, 1994 |
| A frame of digitized video data is compressed by dividing the frame into a plurality of rectangular blocks each typically measuring 4 pixels by 4 pixels. The entropy of each block is determined by measuring the difference between a maximum luminance of any pixel in the block and the |
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