Multiple coil magnetic head for magnetic optical recording device
US5500839A · kind A · utility
6Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording and reproducing apparatus includes a magnetic head for modulating a magnetic field according to a recording signal. There are three separate coils around a single magnetic core the magnetic head. Three coil driving circuits are included, each one associated with a separate coil for switching the direction of magnetic field generated by said separate coils. A selecting circuit is used for starting or stopping the transmission of the recording signal to the coil driving circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.