Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2009-10-07
2011-11-15
Tran, Thang (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
Reexamination Certificate
active
08059509
ABSTRACT:
An optical disk drive for determining a disk characteristic of an optical disk comprising an information layer comprising a substantially circular track is described. The optical disk drive has an optical pickup unit arranged to generate a beam, direct the beam to the optical disk for forming an incident beam, sense a reflected beam produced by the optical disk with a sensor upon receiving the incident beam with the sensor, produce a sensor output signal from sensing the reflected beam; a disk receiving device arranged to receive the optical disk; a motor arranged to provide a transition of the disk receiving device from a first mode to a second mode in at least one transition phase; and a controller arranged to receive the sensor output signal during at least one part of the at least one transition phase and perform at least part of determining the disk characteristic from at least the sensor output signal received during the at least one part of the at least one transition phase. The transition phase can be associated with moving the optical disk into the optical disk drive with a disk load motor. The transition phase can be associated with changing a rotational speed of the optical disk with a spindle motor. Determining the disk characteristic can include a disk recognition preparation.
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Bakx Johannes Leopoldus
van Damme Jean Phillippe
Verbeek Petrus Antonius
Lite-On It Corporation
Thomas Kayden Horstemeyer & Risley LLP
Tran Thang
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