Wobble detection for playback of optical recording media

Details Wobble detection for playback of optical recording media Wobble detection for playback of optical recording media

2004-10-28

2008-10-14

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S053200, C369S047200

Reexamination Certificate

active

07436740

ABSTRACT:
The present invention relates to a method and a device for detecting the type of wobble on an optical recording medium. According to the invention, a programmable digitally tuned oscillator is provided for detecting the wobble at different frequencies and the wobble signal is converted to the base band. Favorably the consistency of the phase of the wobble together with the amplitude of the wobble is used for verifying the presence of the wobble. For this purpose a Cartesian to Polar converter is provided.

REFERENCES:
patent: 7099244 (2006-08-01), Nakata et al.
patent: 2002/0126607 (2002-09-01), Yamamoto et al.
patent: 1 187 111 (2002-03-01), None

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