Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2006-08-29
2006-08-29
Korzuch, William (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044260, C369S059170, C369S059250
Reexamination Certificate
active
07099241
ABSTRACT:
An apparatus for reading and/or writing data markings of an optical recording medium having data markings arranged along a track and header markings arranged laterally offset with respect to the center of the track, the apparatus having a header identification unit. According to the present invention an intermediate track signal is formed, which enables direction identification during the traversal of tracks. The present invention comprises an apparatus having a header sequence detector, a track crossing detector and an intermediate track detector, wherein the intermediate track detector is connected to outputs of the header identification unit, the track crossing detector and the header sequence detector, and generates an intermediate track signal.
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German Search Report citing the above-listed references: AA, and AM.
*Abstract of corresponding British patent GB2312320 is enclosed.
Search Report for European Application No. 00114908.7-2210 dated Jun. 6, 2002.
Büchler Christian
Dietrich Christoph
Chu Kim-Kwok
Deutsche Thomson—Brandt GmbH
Fried Harvey D.
Korzuch William
Laks Joseph J.
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