Low cost detection of wobble inversions using a tuned circuit

Details Low cost detection of wobble inversions using a tuned circuit Low cost detection of wobble inversions using a tuned circuit

2006-07-04

2006-07-04

Psitos, Aristotelis M. (Department: 2656)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S047480

Reexamination Certificate

active

07072265

ABSTRACT:
A tuned circuit is used to detect wobble clock inversions. The tuned circuit reacts to a wobble inversion with a change in amplitude that may be detected by a threshold detector. A bandpass tuned circuit is used to detect wobble clock inversions. The output of the bandpass tuned circuit is input to a saturating high-gain amplifier such as a comparator. The output of the saturating high-gain amplifier reacts to wobble inversions with a half-cycle that has an increased duration as compared to half-cycles without wobble inversions.

REFERENCES:
patent: 6674705 (2004-01-01), Hanks
patent: 6798724 (2004-09-01), Hanks

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