Optical information recording apparatus and method
AssigneesArizona Board of Regents on Behalf of the University of Arizona, Hitachi, Ltd.
InventorsToshiki Ishii, Yuzuru Takashima
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Abstract
An optical information recording apparatus and method thereof for recording information in a holographic medium. The apparatus includes a laser source which generates a reference beam and a signal beam to record the information in the holographic medium, a sensor which detects a vibrational amplitude over a time period applied to the optical information processing apparatus for recording the information, an operational circuit which calculates from the vibrational amplitude at least one statistical measure of the vibrational amplitude; and a processor programmed to control a recording mode such that the processor evaluates the calculated statistical measure to determine continuation of a recording operation to the holographic medium.
Claims19
An optical information processing apparatus for recording information in a holographic medium, the apparatus comprising:
- a laser source which generates a reference beam and a signal beam to record the information in the holographic medium;
- a sensor which detects a vibrational amplitude over a time period applied to the optical information processing apparatus for recording said information;
- an operational circuit which calculates from the vibrational amplitude at least one statistical measure, which is calculated based on multiple data, of the vibrational amplitude;
- and
- a processor programmed to control a recording mode such that the processor evaluates the calculated statistical measure to stop a recording operation to the holographic medium when the statistical measure exceeds a predefined threshold.
Dependencies are inferred from the claim text.