Program guide data compression
US7574719B1 · kind B1 · utility
5Cited by
8References
58Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Mar 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/85406
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For data encoded with an encoding scheme, a data compression technique utilizes encoding scheme values as compression indexing values where the encoding scheme values are part of the encoding scheme, but are not used to encode the data. In an implementation, a data compression dictionary is generated and indexed with the unused encoding scheme values. In an eight-bit encoding scheme, for example, the data is compressed from each letter and/or number being represented with eight bits down to complete words, numbers, and/or combinations of words and numbers being represented with only two bytes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.