Information reproduction apparatus compatible with different recording media
US5684773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Mar 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compatible information reproducing apparatus which performs optimum signal processes corresponding to the kinds of a target recording medium for read signals read out from the target recording medium in which digital data signals have been stored and which can accurately reproduce the recorded digital data. The information reproducing apparatus of different recording media each storing a digital data signal is constructed by: a reading system (1, 2, 5) for reading out the digital data signal recorded on a target recording medium (3) and forming a read signal; an A/D converter (11) for A/D converting the read signal and sequentially forming a reproduction sample values; a prediction value setting circuit (13') for forming prediction values in accordance with the kind of a target recording medium; and a Viterbi decoder (12) for performing a Viterbi decoding based on the prediction values for the reproduction sample values, thereby forming a reproduction digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.