Programmable digital centerline tracking threshold apparatus and

Programmable filter/equalizer for duel speed and density magneti

Programmable write equalization for magnetic data recording

Providing transitions of slew rate dependent on pulse frequency

Pulse-mode writer

Pulsed write current adapted for use with a field...

Quad burst servo demodulator with adjustable slew rate for hard

Quad burst servo demodulator with adjustable slew rate for hard

Qualification for pulse detecting in a magnetic media data stora

Qualifier circuit

Read and/or write integrated circuit having an operation timing

Read back circuit for recovering data from magnetic storage medi

Read channel architecture for processing read head signals

Read channel detector for use in digital magnetic recording syst

Read channel detector with improved signaling speed

Read channel for magnetic recording

Read channel with programmable bandwidth control

Read circuit for floppy disk drive

Read signal processing circuit

Read/write amplifier circuit for magnetic disk unit