Process for positioning a record changing device having reflective markers
US5248888A · kind A · utility
4Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Mar 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/228
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of adjusting the moveable unit of a positioning device having a light source and a photodetector for scanning markers identifying positions at which the moveable unit is to be located includes the steps of accurately and manually positioning the unit at one of the identifying positions. The unit is then automatically driven to a second position where the output signal of the photodetector is maximum. The deviation from the first position to the second position is stored as an offset which is subsequently used to accurately position the moveable unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.