Pulse or digital communications – Repeaters – Testing
Patent
1993-01-28
1995-02-21
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375 17, 360 46, H04L 2549, G11B 502
Patent
active
053923162
ABSTRACT:
A magnetic recording apparatus includes a magnetic recording medium for recording a binary signal; a magnetic head for detecting the binary signal; an amplifier for amplifying the binary signal detected by the magnetic head; a channel for outputting the amplified binary signal in the form of a timing value sequence, the timing value sequence alternatively providing positive and negative peak values following the rule of the binary signal that recorded in the recording medium; a temporary judging unit for judging a presently input timing value of the timing value sequence supplied from the channel as one of the positive peak value, in accordance with the relationship with a preceding timing value temporarily judged as one of the positive and negative peak values; a final judging unit for finally setting the preceding timing value as one of the positive and negative peak values and the intermediate value, in accordance with the relationship with the presently input and temporarily judged timing value; a counter for counting the number of input bits of the timing value sequence; a unit for resetting the counter when the timing value temporarily judged as one of the positive and negative peak values is output; a register for storing a decoded binary bit value; and a unit for overwriting the bit value in the register at the bit position corresponding to the count of the counter.
REFERENCES:
patent: 4571734 (1986-02-01), Dolivo et al.
patent: 4644564 (1987-02-01), Dolivo et al.
patent: 5166955 (1992-11-01), Ohta
patent: 5265125 (1993-11-01), Ohta
Hori Yosuke
Ouchi Yasuhide
Sato Naoki
Sawaguchi Hideki
Chin Stephen
Hitachi , Ltd.
Tse Young
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