OPTICAL DISK DEVICE CONTROLLING A REVOLUTION OF A RECORDABLE OPTICAL DISK ACCORDING TO A DISPLACEMENT BETWEEN A PHASE OF A SECTOR SYNCHRONIZING SIGNAL GENERATED FROM A DATA-WRITING REFERENCE CLOCK SIGNAL AND A PHASE OF A SYNCHRONIZING SIGNAL OBTAINED FROM ADDRESS INFORMATION
US6650606B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/247
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk device that records and reproduces information on/from a recordable optical disk is provided. The optical disk device comprises a reference clock signal generating unit generating a data-writing reference clock signal used to obtain a data-writing timing upon recording data to the optical disk, a synchronizing signal generating unit generating a predetermined sector synchronizing signal from the data-writing reference clock signal, a data demodulating unit reading address information indicating a position on the optical disk from data recorded on the optical disk so as to demodulate the address information into a predetermined synchronizing signal, a displacement detecting unit detecting a displacement between a phase of the sector synchronizing signal and a phase of the synchronizing signal; and a data-writing control unit controlling a data-writing upon performing an additional recording to the optical disk by controlling a revolution of the optical disk dynamically according to the displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.