D.C. Controlled adjustable ramp signal generator and method

Data deletion device for magnetic tapes

Data erasing apparatus

Data erasing device erasing designated data

Data recording apparatus able to accurately access a floppy disk

Data storage system with improved biasing techniques for...

Degauss waveform generator for perpendicular recording write...

Degauss waveform generator for perpendicular recording write...

Demagnetization of magnetic media for data storage device...

Demagnetizing apparatus for erasing signals recorded on concentr

Device for erasing visible recorded signals from a recording med

Device for reading magnetic information

Differential magneto-resistive head pre-amplifiers for...

Differential voltage bias, voltage sense preamplifier...

Digital filtering and digital automatic gain control for a...

Digital magnetic reproducing apparatus and digital magnetic reco

Digital magnetic reproducing apparatus and digital magnetic reco

Digital tape erasure conditioning system

Digitally controlled automatic bias circuit for magnetic recordi

Direct coupled wide-bandwidth front-end with smart bias...