Optical disc system using multiple optical heads for accessing information data
US5886960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Nov 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2575
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc optics system for accessing data from one side of a disc is provided with a plurality of optics sets. The optics sets are formed to access data from a disc in response to a control signal and generate a data signal representative of accessed data. The optics sets are positioned at radially variable portions of one side of a disc. The disc optics system is further provided with a multiplexer. The multiplexer is formed to receive data signals from the plurality of optics sets and to selectively output a single data signal in response to a selection signal. The disc optics system is further provided with a controller. The controller is formed to output a control signal to the plurality of optics sets for selectively accessing data from the disc and cause the multiplexer to selectively output a single data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.