Apparatus and method for side determination of optical disc
US8248442B2 · kind B2 · utility
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2References
12Claims
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Assignee
Inventor
Key dates
| Filing date | May 1, 2009 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Mar 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A side determination apparatus of an optical disc includes a light source illuminating one side of the optical disc having a data side and a non-data side obliquely; a sensor receiving a reflected light from the optical disc illuminated by the light source; and a determination unit determining that an incident light into the sensor is a reflected diffracted light from the data side of the optical disc based on a distribution of an output of the sensor onto a surface of the disc to determine the one side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.