Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2004-09-27
2008-03-04
Tran, Thang V. (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S047320, C369S047440
Reexamination Certificate
active
07339862
ABSTRACT:
A novel optical disc driving system and method for determining the rotation speed of an optical disc are provided, which allow to determine the highest rotation speed optimal for reading out audio and video data in the optical disc in accordance with the environmental conditions in the vicinity of the optical disc driving unit, in particular the time and temperature. The rotation speed is determined by reading out the data recorded in the optical disc under the permissible operation conditions, which result from both actually measured parameters for environmental conditions and predetermined upper and lower limits of the rotation speed for a disc spindle motor for the respective ranges of parameters. The parameters for environmental conditions and the upper and lower limits of the rotation speed can be manually changed by user's instruction.
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Funai Electric Co. Ltd.
Tran Thang V.
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