Optical recording medium with track and track number guides
US4885736A · kind A · utility
4Cited by
16References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1987 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Aug 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium having a plurality of tracks juxtaposed each other and capable of easily and rapidly detecting a desired track. An optical recording medium includes a data recording region in which the tracks are juxtaposed each other and a track detecting region provided at a part of the data recording region. The track detecting region includes track guides juxtaposed along respective tracks and track number guides corresponding to a locus of the movement of an optical head in the access to a desired track, the track number guides intersecting the track guides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.