Magnetic disc drive system having automatic offset and gain adju

Magnetic disc driving apparatus having speed and position contro

Magnetic disc driving device for controlling the position of a m

Magnetic disc having physical servo patterns with a magnetic...

Magnetic disc memory and magnetic disc for this memory

Magnetic disc read head positioning device and method

Magnetic disc recording and/or reproducing apparatus

Magnetic disc recording system employing two stage actuators for

Magnetic disc storage apparatus

Magnetic disc storage apparatus

Magnetic disc storage device with track centering correction

Magnetic disc storage devices having compensation for dimensiona

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disk apparatus