A method for accurately searching a target track of a disc in a disc drive is provided. The method includes the steps of: a) generating a reference signal having a predetermined period, b) moving a pickup across tracks from a starting point of a disc region where information is recorded to an end...http://www.google.de/patents/US5726959?utm_source=gb-gplus-sharePatent US5726959 - Method for searching a track of a compact disk drive
