An optical head access controlling apparatus comprises a speed detecting circuit detecting a moving speed of an optical spot irradiated onto an optical disk and outputting a speed detecting signal, a CPU controlling all of said optical head access controlling apparatus and outputting a crossing track number N which is set when access to a target track starts and outputting an access direction, a track counter outputting a remained track number from the crossing track number N to a target track, a reference speed producing circuit producing a reference speed of an optical head in accordance with a remained track number from the track counter, a first amplifier of a gain K1 amplifying a moving speed detecting signal of an optical spot from a speed detecting circuit, a speed direction designating circuit designating a speed direction by an access direction signal of an optical disk from the CPU, a second amplifier of a gain K2 amplifying a reference speed signal from a reference speed producing circuit, a reference speed direction designating circuit designating a reference speed direction by an access direction signal from the CPU, a track pitch distinguishing device for distinguishing a track pitch of an optical disk and an error detecting circuit producing a speed error signal by output from a reference speed direction designating circuit and speed direction designating circuit.
Optical recording/reproducing head access controlling apparatus for an optical type information recording/reproducing apparatus