Information signal track search system in a rotary recording medium reproducing apparatus

Claim 1

An information signal track search system in a rotary recording medium reproducing apparatus comprising carriage means, a reproducing transducer mounted on said carriage means and having a cantilever, said cantilever being provided with a reproducing element at a tip end thereof for scanning over tracks on a rotary recording medium and reproducing recorded signals from the tracks, said cantilever being resiliently supported at a part in the vicinity of a base end thereof so that said reproducing element is displaceable with respect to the base end of said cantilever, and driving means for moving the carriage means along a radial direction of the rotary recording medium, said rotary recording medium being recorded with an address signal indicating the position of each track, said track search system comprising: address detecting means for constantly detecting the address signal from the signals reproduced by the reproducing element so as to detect an address of a track on which the reproducing element is located; processing means for comparing a desired address of a desired track memorized therein and the detected address from said address detecting means and for controlling said driving means responsive to an address difference, said processing means controlling said driving means to move the carriage means in a first radial direction at a first high speed in response to said address difference, said processing means controlling said driving means to stop driving the carriage means in said first radial direction when said address difference becomes substantially equal to zero, said reproducing element lagging with respect to the base end of said cantilever due to friction between the reproducing element and the surface of the rotary recording medium while said carriage means moves in said first radial direction and, when said carriage means is no longer driven, said reproducing element undergoing a further movement in said first radial direction and overrunning said desired track owing to inertia of said carriage means and a resilient restoration force of said cantilever acting to overcome the lagging condition of said reproducing element; and; kicking means for kicking the reproducing element in a second radial direction which is opposite to said first radial direction at a second high speed until said address difference becomes exactly equal to zero, said second high speed being smaller than said first high speed.