Embedded software negotiation of PCM companding format
US6510180B1 · kind B1 · utility
1Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1998 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Dec 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/048
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are described for selecting a companding format of a series of pulse code modulated (PCM) data words encoded under either an A-law or &mgr;-law companding format. The method includes the steps of expanding the PCM words into an average waveform sample value using both the A-law and &mgr;-law companding formats and selecting the companding format providing the expanded average sample value with a smallest relative absolute value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.