Optical disc drive
US8305869B2 · kind B2 · utility
4Cited by
0References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 6, 2011 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jun 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Bandwidth is secured for a read signal transmission line by matching the characteristic impedance of the read signal transmission line with the output impedance of a photodetector of an optical pick up, while at the same time securing bandwidth for the photodetector. In an optical disc drive according to an embodiment of the present invention, each line forming a differential transmission line is divided into a plurality of lines of the same quantity, the quantity being two or more, at or near a connection point between a flexible line and the optical pick up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.