Degausser for magnetic stripe card transducing system
US5396369A · kind A · utility
40Cited by
7References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 24, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Aug 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/465
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for degaussing magnetic transducers used with magnetic stripe cards includes a degaussing unit that drives a magnetic transducer with an electrical pulse, or a gradually increasing drive frequency, to eliminate the residual magnetism of the transducer. Logic circuitry controls the device to degauss with little or no additional equipment and avoids damage to the recordings, as on low-coercivity magnetic stripe cards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.