Gramophone equipment
US4142729A · kind A · utility
7Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Nov 29, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record player has a record track selection system using sensing means to scan a record to identify selected record tracks, the sensing means feeding signal processing circuitry having a gain or threshold adapted to individual record characteristics as determined by a record scan prior to track identification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.