A memory unit adapted for use with an electronic computer or the like. In the unit, a data-clock pulse train regenerated by a head is discriminated into a data pulse train and a clock pulse train by a first discrimination circuit in accordance with a first gate signal outputted from a first gate circuit,...http://www.google.com/patents/US4811125?utm_source=gb-gplus-sharePatent US4811125 - Information recording/regenerating circuit for a memory unit
