Magnetic drum/head system for selectively generating recorded voice information
US4376961A · kind A · utility
10Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1981 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Jun 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic drum/head system for selectively reproducing voice information recorded on the magnetic drum. The magnetic drum has a recording zone in which predetermined voice information is recorded in each track thereof and a non-recording zone between a starting end of the recording zone and a terminating end of the same. In case of a track selection, the magnetic drum is held still so that the non-recording zone is in a confronting relation to the magnetic head, and the magnetic head is driven to move along the non-recording zone to the selected track. The magnetic drum is then rotated to reproduce the selected voice information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.