Abstract There is provided a tracking control apparatus for controlling the position of a recording and reproducing head with respect to a recording track by detecting a plurality of kinds of servo marks disposed at fixed intervals from the center line of a recording track on a magnetic disk. The present apparatus comprises a position error coefficient computation device responsive to position error values in a plurality of positions of the recording and reproducing head on the track and position signals at those times to correct a coefficient to be used for calculating a position error, and an actuator responsive to an output signal of the computation device. Thereby, it is possible to obtain an accurate position error signal which depends upon neither the track pitch nor the core width of the recording and reproducing head.
A tracking control apparatus comprising: a tracking control apparatus proper for controlling the position of a recording and reproducing head with respect to a recording track by detecting a plurality of kinds of servo marks disposed at fixed intervals from the center line of a recording track on a rotating magnetic recording disk; position error coefficient computation means responsive to position error values in a plurality of positions of said recording and reproducing head on said track and position signals at those times to correct a coefficient to be used for calculating a position error; and an actuator responsive to an output signal of said computation means to move said recording and reproducing head.
Claim 2
Dependent Claim
114 words
A tracking control apparatus comprising: a tracking control apparatus proper for controlling the position of a recording and reproducing head with respect to a recording track by detecting a plurality of kinds of servo marks disposed at fixed intervals from the center line of a recording track on a rotating magnetic recording disk; position error coefficient computation means responsive to position error values in a plurality of positions of said recording and reproducing head on said track and position signals at those times to correct a coefficient to be used for calculating a position error; and an actuator responsive to an output signal of said computation means to move said recording and reproducing head.