Skim encoding method for compression of a two dimensional array of data
US6947606B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Mar 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/503
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for compressing a two dimensional array of data including at least one array block having a plurality of block rows and a plurality of block columns of pixels, each pixel having at least one associated intensity value. The process includes generating a delta frame associated with a pair of the block columns, the delta frame having a plurality of delta rows and delta columns of delta bits, one of the delta rows being a highest order row; determining a number of duplicate rows of the delta rows, each of the duplicate rows forming an identical row byte value having delta bits which have a predetermined relationship with the delta bits of the highest order row; recording information indicative of the number of duplicate rows; and developing compressed data including the information indicative of the number of duplicate rows of the delta frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.