Method of controlling the position of a write-read head and...

Details Method of controlling the position of a write-read head and... Method of controlling the position of a write-read head and...

G - Physics

11

B

352/21.1

G11B 21/04 (2006.01) G11B 5/588 (2006.01)

Patent

CA 1131771

1 PHN 9043 ABSTRACT: A method and apparatus for controlling the position of write-read heads with which information is recorded in a plurality of parallel tracks on a record carrier. In accordance with the invention a tracking sig- nal is recorded in at least selected tracks during a first time interval. When the next track is written the supply of write signals to the write-read heads is interrupted for a second time interval, the first and second time intervals being selected in such a way that the track por- tions corresponding to said two time intervals adjoin each other. During the second time interval the cross-talk signal produced in the write-read head by the recorded tracking signal is measured and employed to produce a con- trol signal for positioning the write-read heads.

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