Data storage device having a phase change memory medium reversible by direct overwrite and method of direct overwrite
US4924436A · kind A · utility
30Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1987 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Jul 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for direct, single beam, overwrite of new data over existing data in a phase change optical data storage device are disclosed. This eliminates the need for an intermediate erase step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.