Slope detection method, and information detection/writing apparatus using the method
US5412597A · kind A · utility
27Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Oct 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/852
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for detecting a slope of a surface of an information record medium in an apparatus for detecting/writing information using one or a plurality of probes from/in the information record medium. The surface of the information record medium is scanned using the probe. The information from the surface of the information record medium is detected through the probe when the scanning is executed, and the slope of the surface of the information record medium is detected on the basis of the detected information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.