Method and apparatus for testing a servo circuit of a...

Details Method and apparatus for testing a servo circuit of a... Method and apparatus for testing a servo circuit of a...

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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