Method and apparatus for detecting tightness of a pick-up head, method for controlling the moving of the pick-up head
US9691427B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2016 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Jul 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08505
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for detecting tightness of a pick-up head, and a method and apparatus for controlling the moving of the pick-up head are disclosed. The method for detecting the tightness of the pick-up head includes moving the pick-up head to an inner area of the disc reading device when then disc reading device is powered on, moving the pick-up head to an outer area of the disc reading device within a predetermined time period, moving the pick-up head from the outer area of the disc reading device to the inner area at a constant speed by a first fixed force, and recording the moving duration for moving the pick-up head from the outer area of the disc reading device to the inner area at the constant speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.