Error correcting DPCM transcoding
US8176368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2010 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3053
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital system is provided that converts compressed data using an indexed transcoding lookup table. A stream of compressed data samples has data samples that represent one of n values corresponding to the first compression format. The transcoding table has at least n indexed entries, and each of the n indexed entries contains a data value corresponding to a second compression format. The transcoding table is accessed by using each of a portion of the received data samples as an index into the table to form a set of transcoded data samples that have a second compression format. The set of transcoded data samples form a stream of compressed data samples that have the second compression format. The transcoding table may be augmented to perform transcoding error correction by concatenating an error value with the data sample to index the table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.