Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1994-08-08
1995-10-17
Hajec, Donald
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
G11B 509
Patent
active
054596203
ABSTRACT:
An evaluation system for a signal waveform includes a first delay element for delaying a clock signal, a second delay element for delaying the output of the first delay element, and third and fourth delay elements for delaying the output of the second delay element. A first detector receives the output of the first delay element and the signal waveform for outputting binary data, a second detector receives the output of the second delay element and the signal waveform for outputting binary data, a third detector receives the output of the third delay element and the signal waveform for outputting binary data, and first, second and third shift registers receive output data of the first, second and third detectors and the output of the fourth delay element. A comparator unit compares data in the first, second and third shift register with a particular data pattern, and a counter counts output pulses of the comparator unit, the output of the second detector being output as a read data output. The distribution of peak pulses in a detection window is thereby determined.
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Hajec Donald
Hitachi , Ltd.
Le Thien Minh
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