Programmable and multiplierless Viterbi accelerator
US6883021B2 · kind B2 · utility
8Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6569
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention is related to methods and apparatus that decode convolutionally encoded data, including trellis-coded modulation (TCM) systems. One embodiment of the invention shares a memory device with a main processor, such as a microprocessor or a DSP, and advantageously relieves the main processor of the relatively time-consuming task of decoding the convolutionally encoded data. This frees up the main processor to execute other tasks. One embodiment of the invention includes a micro-coded state machine that can be programmed to control the decoding of the convolutional codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.