Recorder/player device with stationary recording medium and constant speed signal head drive
US4851929A · kind A · utility
3Cited by
2References
23Claims
0Family size
Inventor
Key dates
| Filing date | Jul 14, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 14, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Signal heads are displaced relative to a recording surface on a stationary recording medium having a separate surface on which visual data is recorded and displayed. Differential drive mechanism and adjustable resistor means effects signal head displacement along a predetermined path on the recording surface at a constant speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.