Optical disk drive unit
US5694314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact optical disk drive unit improved in workability of assembly. A first printed wiring board having a signal demodulating circuit, a drive unit control circuit, and a drive circuit for driving a voice coil motor is mounted on an upper surface of a drive base. A first connector is mounted on a lower surface of the first printed wiring board. A moving optical assembly having an objective lens is movably mounted on the drive base, and a fixed optical assembly having a laser drive module and a photodetector is mounted on a lower surface of the drive base. The fixed optical assembly includes a second printed wiring board having a second connector. The first and second printed wiring boards and are connected together through the first and second connectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.