Patent ID: 6351437
Filing Date: 2002-02-26
Classification: G11B

Abstract:
A tracking servo circuit for stopping a pickup at a target position on a recording track formed on a recording medium, the tracking servo circuit comprising:a selection signal generator for generating a selection signal in accordance with the polarity of a tracking error signal, wherein the tracking error signal has a positive value when the pickup is located at a first side of the recording track and a negative value when located at a second, opposite side of the recording track; a selector connected to the selection signal generator to select one of two data in accordance with the selection signal and output the selected data; a drive signal generator connected to the selector to generate a drive signal for stopping the radial movement of the pickup using the selected data; and an A/D converter connected to the selector for generating digitized error data from the tracking error signal, wherein the error data includes a code bit indicating the polarity of the tracking signal, wherein the A/D converter is connected to the selection signal generator and the two data selected in accordance with the selection signal are the error data and a predetermined fixed data.