Method and apparatus for noise reduction in magnetic media

Details Method and apparatus for noise reduction in magnetic media Method and apparatus for noise reduction in magnetic media

G - Physics

11

B

G11B 5/02 (2006.01) G06F 21/00 (2006.01) G06K 1/12 (2006.01) G06K 7/015 (2006.01) G06K 19/12 (2006.01) G07D 7/04 (2006.01) G07F 7/08 (2006.01) G07F 7/12 (2006.01) G11B 5/035 (2006.01) G11B 5/54 (2006.01) G11B 5/58 (2006.01) G11B 5/596 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01) G11B 20/18 (2006.01) G11B 20/24 (2006.01) G11B 21/10 (2006.01) G06F 1/00 (2006.01) G11B 5/48 (2006.01) G11B 23/28 (2006.01) G11B 33/10 (2006.01)

Patent

CA 2159800

A method and apparatus is disclosed for determining the remnant noise in a magnetic medium (104) by DC saturation (102) of a region thereof and measurement (106) of the remaining DC magnetization. Conventional recording transducers may be used to determine the remnant noise. Upon determination, the remanent noise may then be compensated for in either or both of the record (110) and playback modes for all varieties of magnetic media including videotapes, cassette tapes, etc.

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