Record carrier and apparatus for scanning the record carrier

Details Record carrier and apparatus for scanning the record carrier Record carrier and apparatus for scanning the record carrier

2007-01-02

2007-01-02

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275400, C369S047190

Reexamination Certificate

active

10268419

ABSTRACT:
A record carrier has a servo track (4) indicating an information track (9) intended for recording information blocks. The servo track (4) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element or of a word sync type having a word sync element. The bit sync element, word sync element and the data bit element being modulated according to a same predetermined type of modulation of the periodic variation. All distances between two adjacent of the elements constituting the modulated parts are unique.

REFERENCES:
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patent: 6671238 (2003-12-01), Ko et al.
patent: 6765861 (2004-07-01), Van Vlerken et al.
patent: 0793234 (1997-03-01), None

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