Method for eliminating errors in block parameters
US5054025A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/098
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Some signal coding techniques involve quantizing the signal samples using a signal derived parameter to set the quantizer step. This parameter is then used in the decoding process to synthesize the original signal back to its analog form. Any error affecting the integrity of said parameter, between coding and decoding, would affect the synthesized signal. The method proposed here for protecting data integrity involves, at the encoding site, forcing the parameter to a fixed parity. Then, before synthesizing operations are performed, any parameter failing a parity control test is discarded and replaced with a parameter derived from available valid parameter(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.