Decoding system for eight-to-fourteen modulation or eight-to-sixteen modulation
US7634714B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Sep 14, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0067
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoding system for eight-to-fourteen modulation or eight-to-sixteen modulation (EFM/ESM), which has an analog to digital converter (ADC), an adaptive equalizer and a Viterbi decoder. The ADC receives an analog signal with an EFM or ESM feature, and converts the analog signal into a digital signal with the EFM or ESM feature. The adaptive equalizer converts the EFM or ESM digital signal into a first signal with a minimum phase feature. The Viterbi decoder receives the first signal and generates a decoding signal in accordance with a Viterbi algorithm and a channel model, and the Viterbi decoder discards nonexistent paths in accordance with the EFM or ESM feature when computing branch metric of a branch or a node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.