Electronic circuit for decoding a read signal from an optical storage medium
AssigneeThomson Licensing
InventorStefan Rapp
Life of this patent
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Abstract
The invention relates to an electronic circuit for decoding a read signal from an optical storage medium, the electronic circuit comprising a limit equalizer for amplification of high frequency read signal components without substantially increasing inter-symbol interference, a Viterbi detector being coupled to an output of the limit equalizer for providing the decoded read signal, a coefficient adaptation circuit for tuning the limit equalizer to a partial response target.
Claims11
An electronic circuit for decoding a read signal from an optical storage medium, the electronic circuit comprising:
- a limit equalizer for amplification of high frequency read signal components without substantially increasing inter-symbol interference,
- a Viterbi detector being coupled to an output of the limit equalizer for providing the decoded read signal.
An electronic device for reading an optical storage medium, the electronic device comprising:
- means for providing a read signal from the optical storage medium,
- a limit equalizer for amplification of high frequency read signal components without substantially increasing inter-symbol interference,
- a Viterbi detector being coupled to an output of the limit equalizer for providing the decoded read signal.
A method for reading an optical storage medium, the method comprising the steps of:
- providing of a read signal from the optical storage medium,
- equalising of the read signal by means of a limit equalizer for amplification of high frequency read signal components without substantially increasing inter-symbol interference,
- performing a Viterbi detection on the equalized read signal to provide the decoded read signal.
Computer program product, such as digital storage medium, comprising program means for decoding a read signal from an optical storage medium by the steps of:
- providing of a read signal from the optical storage medium,
- equalising of the read signal by means of a limit equalizer for amplification of high frequency read signal components without substantially increasing inter-symbol interference,
- performing a Viterbi detection on the equalized read signal to provide the decoded read signal.
Dependencies are inferred from the claim text.