Information recording apparatus and method therefor
US6657934B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Apr 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24085
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording apparatus and a method therefor which can form a beam guide groove in the shape of highly accurate rectangle having abrupt edges. A recording mark is formed by exposing a recording medium with a recording beam having a beam diameter smaller than the beam guide groove, while periodically vibrating the recording beam in a direction perpendicular to a recording track on the recording medium, or in both horizontal and vertical directions of the recording track. For this purpose, the information recording apparatus for forming a recording mark of a predetermined width in accordance with recording information on a recording surface of an information recording medium comprises, in addition to components conventionally provided therein, recording beam generator for generating a recording beam having a smaller diameter than the width of the recording mark, a displacement information generator for generating displacement information of the recording beam based on the generated recording information, and a beam position controller for offsetting the recording beam based on the displacement information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.