Method and apparatus for recording optical information by varying recording pulse width
US6480450B1 · kind B1 · utility
36Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00451
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus capable of recording optical information at high density are disclosed. A recording pulse which includes a top pulse followed by a multiple pulse set is generated to form a pit, wherein, based on the distance from the top pulse, either pulse widths of pulses within the multiple pulse set are set to be sequentially smaller or pulse intervals of pulses within the multiple pulse set are set to be sequentially larger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.