Optical disc device and disc reproducing method
US7869322B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2006 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Aug 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0013
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The first layer (DVD layer) is first reproduced using the red layer light. Thereafter, search for the second layer (HDDVD layer) is performed with the blue laser light in accordance with the reproducing operation being temporarily interrupted for menu display (display for chapter or language selection). If the second layer is detected, a display indicating that the second layer can be selected is displayed over the menu display. If instruction to reproduce the second layer is input from the user according to the display, the reproducing operation of the first layer using the red laser light is switched to the reproducing operation of the second layer (HDDVD layer) using the blue laser light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.