Viterbi decoder for a high definition television
US5844945A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1995 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Jan 11, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0054
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Viterbi decoder for receiving and decoding a signal transmitted through a transmission channel in a vestigial side band (VSB) transmission system, in a high definition television (HDTV), which operates at the same speed as a symbol rate, can simply accomplish a hardware implementation using simplified memory system and a single decoder in order to restore an encoded signal, compared to the conventional art in which 12 decoders are used in restoring the encoded signal. Also, since the memory configuration thereof is regular, when it is intended to extend the observation sections, the memory structure can be extended easily. Moreover, the present invention can be adopted by extending easily to 3-bit 8 state or above as well as to 2-bit 4-state by means of a general Viterbi decoding algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.