Fast closure method for a data signal channel

Fast erase method and apparatus for digital media

File protect and amount of tape sensing apparatus

File protect sleeve

Filter calibration method in a disc drive and apparatus

Filter for disk drive bi-phase servo demodulation

Filtering a read signal to attenuate secondary pulses caused by

Flaw detector for magnetographic quality inspection

Floppy disc device with a delay mechanism

Floppy disc drive unit

Floppy disc magnetic head apparatus compatible with both horizon

Floppy disk driving with suitable on-delay and off-delay timing

Floppy disk interface with multiple disk images

Flux closed single pole perpendicular head for ultra narrow...

FM audio record reproducing apparatus having circuitry for preve

Four head sequential switch scanning type magnetic recording/rep

Frequency domain approach for efficient computation of...

Frequency extension method and apparatus for fast rise time...

Frequency response adjusting device for magnetic sound recorder

Frequency response equalizer