Crosstalk canceler with digital filter for producing pseudo crosstalk component
US5790492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/22
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A crosstalk canceler cancels crosstalk components mixed into a reproduced signal of a target track from a first and a second neighboring tracks positioned on both sides of the target track formed on an optical disc. The crosstalk canceler includes: unit for reproducing a signal recorded on the tracks of the optical disc; unit for processing the reproduced signal to produce 1-bit binary data indicating data recorded on the first neighboring track and outputting first binary data; unit for producing a first pseudo crosstalk component which mixes into the reproduced signal of the target track from the first neighboring track based on the first binary data; unit for delaying an output signal corresponding to a pure recorded signal of the track preceding the target track to produce second binary data indicating data recorded on the second neighboring track and outputting second binary data; unit for producing a second pseudo crosstalk component which mixes into the reproduced signal of the target track from the second neighboring track based on the second binary data; and unit for subtracting the first and the second pseudo crosstalk components from the reproduced signal of the target t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.