Write control method and apparatus for writing optical disk data
US5327411A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00454
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A write control method for writing optical disk data wherein pits are written by a write signal composed of mark signal parts and space signal parts, and a length of each pit represents the optical disk data, comprising the steps of: converting the mark signal parts to pulses and generating a series of pulse trains which correspond to lengths of the mark signal parts, respectively; controlling a lengths and/or amplitude of each of the pulse trains in accordance with a length of the space signal part immediately before the mark signal part; and applying successively the controlled pulse trains to a laser irradiation device so that the pits are written.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.