Method of controlling the position of a write or read head...

Details Method of controlling the position of a write or read head... Method of controlling the position of a write or read head...

Category

G - Physics

Subcategory

11

Subsubcategory

B

CPC

352/21.1

IPC codes

G11B 21/02 (2006.01)

Type

Patent

Patent number

CA 1129992

Description

PHN 8728 Div. ABSTRACT: Method and device for controlling the posi- tion of a write or read head, which covers adjacent tracks on a record carrier, relative to at least one adjacent track, which tracks in addition to the inform- ation signals contain tracking signals, the tracking signal in n consecutive tracks having n different fre- quencies, where n ? 4, and the difference of the fre- quencies of the tracking signals of every two adjacent tracks with the frequency of the third signal which frequency may differ from track to track, always yield- ing fourth signals with the same pair of lower frequen- cies, a control signal being derived from said fourth signals. - 1 -

Application Number

384334

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