Transducer positioning system
US4085427A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Dec 13, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transducer positioning system wherein a pair of position information signals are first processed by means which tend to equalize the offset errors in each, the signals then being further processed by peak detection circuitry, the peak detection responses thereof being matched as by suitably matching appropriate transistor pairs therein so that offset errors arising with respect to each signal during the peak detection operations are made substantially equal. The peak detected signals are then suitably combined so that the substantially equalized offset errors are effectively eliminated and good temperature stability is maintained. Automatic gain control feedback circuitry using double-integration techniques is also utilized for assuring better position accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.