Device for detecting position information from an optical...

Details Device for detecting position information from an optical... Device for detecting position information from an optical...

2004-12-23

2008-09-16

Psitos, Aristotelis M (Department: 2627)

Dynamic information storage or retrieval

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

Control of information signal processing channel

C369S059190

Reexamination Certificate

active

07426160

ABSTRACT:
An optical record carrier (1) is provided with tracks having a groove (4) wobbled in a transverse direction and predetermined positions (18) along the track. The wobble comprises a substantially monotonous undulation (15). Local excursions (16) of the groove superposed on the undulation at the predetermined positions represent position information, such as addresses. The spatial frequency of the undulation is lower than that of the excursions.

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