A read circuit for a floppy disk drive is disclosed. The circuit comprises a read head for generating an electrical signal corresponding to recorded data, plus an amplifier, equalizing filter, low pass filter and decoder for processing the electrical signal. The equalizing filter has a response, in the...http://www.google.fr/patents/US4327383?utm_source=gb-gplus-shareBrevet US4327383 - Read circuit for a floppy disk drive
