Method and apparatus for noise reduction in magnetic media recordings
US5587654A · kind A · utility
28Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1993 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Apr 9, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is disclosed or determining the remanent noise in a magnetic medium by DC saturation of a region thereof and measurement of the remaining DC magnetization. Conventional recording transducers may be used to determine the remanent noise. Upon determination, the remanent noise may then be compensated for in either or both of the record and playback modes for all varieties of magnetic media including, videotapes, cassette tapes, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.