Data transfer method, block synchronizing signal detecting method, and reproducing apparatus
US7092470B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a method of detecting a block sync signal in which a sync signal and code sequence can be distinguished from each other to recognize the head of a block composed of a plurality of code words at the time of data reading or reception. A sync word detector (10) is supplied with a window signal Sync_window generated based on a parity OK signal supplied from a parity check circuit (12) and indicating a period between the sync word included in signal read from the medium (1) and the ID information, and detects the sync word as to a bit string detected by a PRML Viterbi detector (6) with the use of the Sync_window signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.