Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – With compensation
Patent
1998-06-01
2000-09-05
Le, Dinh T.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
With compensation
327100, 327165, 369 4432, 369 59, G06G 712
Patent
active
061148946
ABSTRACT:
In an optical recording/reproducing apparatus having a 3T-component compensating circuit, among the level-shifted radio frequency signals shifted during a reproduction of recorded data from an optical disc, the level of a 3T component is compensated for, so that error correction may be carried out by a digital signal processor. The optical recording/reproducing apparatus having a 3T-component compensating circuit for reproducing recorded data includes a peaking circuit for amplifying a 3T component from among RF signals outputted from a pickup. A compensating circuit compensates a level-shifted 3T component shifted during the amplification by the peaking circuit. A digital signal processor carries out error correction for the 3T component after the compensation by the compensating circuit. The shifting of the 3T component of the output RF signals of the pickup is compensated for, so that the digital signal processor can carry out the optimum error correction, and so that the recorded images and audio data can be correctly reproduced.
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Bushnell Esq. Robert E.
Le Dinh T.
Samsung Electronics Co,. Ltd.
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