Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Reexamination Certificate
2007-03-20
2007-03-20
Wellington, Andrea (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
C360S031000, C360S039000
Reexamination Certificate
active
10992316
ABSTRACT:
A test pattern generator for generating test patterns for testing a servo circuit of a read/write head system. The pattern generator uses a relatively simple encoding technique to produce test patterns that have peaks with phase characteristics similar or identical to the phase characteristics of peaks of real data patterns, such as real BPS and sync mark patterns, for example, stored on a hard disk. The encoded data patterns are output to servo control logic to test the ability of the servo control logic to detect the patterns.
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Kim Seonki
Zhou Fan
Agere Systems Inc.
Mercedes Dismery
Wellington Andrea
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