Multiple track scanning method for optical pickup
US5978343A · kind A · utility
0Cited by
4References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/247
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of scanning multiple tracks uses an optical pickup to simultaneously emit a plurality of beams on a plurality of tracks on a disk, and satisfies the equations: N.sub.j =(N.sub.b -1)N.sub.g -1 and N.sub.r =N.sub.b N.sub.g -1. Here, N.sub.j represents the number of jumped tracks, N.sub.b represents the number of light beams, N.sub.g represents the interval between the light beams, and N.sub.r represents the number of reproduced tracks during a reproduction period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.