Apparatus and method for signal reproduction
AssigneeSony Corporation
InventorsMinoru Tobita, Kunio Kawaguchi
Life of this patent
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Abstract
An apparatus and method for reproducing pit information precisely from a magnetic optical disk without being adversely affected by heat accumulation. The signal reproducing apparatus reproduces signals using a neural network constituting a decoder that decodes pits on the disk. The signal reproducing method provides learning using a sigmoid function and carries out signal reproduction using a step function.
Claims6
A signal reproducing apparatus for reproducing signals from a recording medium, said apparatus comprising:
- analog-to-digital converting means for converting from analog to digital format the signals reproduced from said recording medium;
- and
- decoding means made of a neural network having learned coefficients beforehand for decoding signals output by said analog-to-digital converting means.
A signal reproducing method for reproducing signals from a recording medium, comprising a first step and a second step;
- said first step having a neural network learn predetermined coefficients by use of a sigmoid function;
- and
- said second step decoding the signals reproduced from said recording medium by use of a step function through said neural network.
Dependencies are inferred from the claim text.