VCR tracking control method and apparatus for generating a capstan motor drive signal based on the capstan speed control valve

Abstract

A tracking control method and apparatus of an image recorder/reproducer enable high performance tracking control by generating a capstan motor speed control value using a variable capstan speed command onto which a tracking error control is reflected. The method includes the steps of obtaining a tracking control value by performing a predetermined gain control on a tracking error; generating a variable capstan speed command onto which the tracking control value is reflected; determining the speed error of a capstan motor by comparing the capstan speed command and the actual rotating speed of a capstan motor; and obtaining a speed control value of a capstan motor onto which a tracking error is reflected, by performing a predetermined gain control on the speed error. The apparatus includes a tracking controller for outputting a variable capstan speed command onto which a tracking error is reflected; and a capstan speed controller for outputting a capstan speed control signal from the speed error obtained by comparing the actual capstan speed and the capstan speed command. Thus, control adaptability and tracking compatibility are enhanced, and coefficient control and system design can be performed easily.

Dependencies are inferred from the claim text.