Optical data storage system and method with reduced heat buildup
US5400313A · kind A · utility
30Cited by
19References
64Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1992 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Nov 9, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10506
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical data storage system records pulse width modulated data as a series of contiguous and overlapping circular marks. A minimum number of circular marks are used to record the desired run length. Circular marks which overlap by greater or equal to one half the diameter of the circular mark are recorded using two different laser power levels. The result is that thermal buildup in the medium is kept to a minimum and the edge transitions are accurately positioned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.