Decoding system for eight-to-fourteen modulation or eight-to-sixteen modulation
AssigneeSunext Technology Co., Ltd.
InventorWen-Chang Lin
Life of this patent
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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.
Claims12
A decoding system for eight-to-fourteen modulation (EFM), comprising:
- an analog to digital converter (ADC), which receives an analog signal with an EFM feature, and converts the analog signal into a digital signal with the EFM feature;
- an adaptive equalizer, which is connected to the ADC to convert the EFM digital signal into a first signal with a minimum phase feature;
- and
- a Viterbi decoder, which is connected to the adaptive equalizer to receive the first signal and to generate a decoding signal in accordance with a Viterbi algorithm and a channel model;
- wherein the Viterbi decoder discards nonexistent paths in accordance with the EFM feature when computing branch metric of a branch to a node.
A decoding system for eight-to-sixteen modulation (ESM), comprising:
- an analog to digital converter (ADC), which receives an analog signal with an ESM feature, and converts the analog signal into a digital signal with the ESM feature;
- an adaptive equalizer, which is connected to the ADC to convert the ESM digital signal into a first signal with a minimum phase feature;
- and
- a Viterbi decoder, which is connected to the adaptive equalizer to receive the first signal and to generate a decoding signal in accordance with a Viterbi algorithm and a channel model;
- wherein the Viterbi decoder discards nonexistent paths in accordance with the ESM feature when computing branch metric of a branch to a node.
Dependencies are inferred from the claim text.