Binary information recorded on magnetic tape is read from the tape and tracked in a manner which is independent of the data pattern on the tape. The time displacement error, TDE (used hereinafter interchangeably) between the data pulses from the tape and a phase-locked-loop reference signal is sampled...http://www.google.fr/patents/US4644420?utm_source=gb-gplus-shareBrevet US4644420 - Circuit and methodology for reading and tracking binary data from magnetic tape independently of the data pattern on the tape
Circuit and methodology for reading and tracking binary data from magnetic ...
