Optical information recording medium and apparatus for recording/reproducing information using the same
US4787075A · kind A · utility
27Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1985 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Dec 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0917
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information recording medium in the form of a card having tracking tracks for obtaining a tracking signal and clock tracks for obtaining a clock signal arranged alternately and record zones for recording information between each of the tracking tracks and each of the clock tracks, and apparatus for recording/reproducing information using the recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.