SETT ATT STYRA LEGET HOS ETT SKRIV-LESHUVUD (HUVUDEN) SOM SAMVERKAR MED EN UPPTECKNINGSBERARE PA VILKEN KONSEKUTIVT NERLIGGANDE PARALLELLA INFORMATIONSSPAR SKALL UPPTECKNAS

摘要

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 signal 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 portions 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 control signal for positioning the write-read heads.