Block pattern detection circuitry for the read subsystem of a streaming tape drive system comprises a state machine, a pattern decoder, a tape mark detector, a block/gap filter, a block/gap meter, a verify count section, and a block read/verify section. The incorporation of a hardware state machine within...http://www.google.com/patents/US4758906?utm_source=gb-gplus-sharePatent US4758906 - Block pattern detection circuitry
