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US 7,453,785 B2Granted
Method for generating a holograrm on a disc surface
AssigneeInternational Business Machines Corporation
InventorViktors Berstis
Life of this patent
Estimating the term…
Abstract
A method for generating a hologram on a disc surface provides for the use of calibration spots burned onto a disc with an accuracy greater than one half wavelength of light.
Claims14
A computer readable medium storing a computer program for generating a hologram on a first disc surface, comprising:
- computer readable code for controlling a device to provide at least one calibration spot on the first disc surface, wherein the calibration spot has a calibration spot positioning that is equal to or less than one-half a wavelength of light;
- computer readable code for controlling a device for reading the calibration spot to ascertain the calibration spot positioning;
- and
- computer readable code for controlling a device for writing a first set of hologram spots onto a second disc surface based on the calibration spot positioning, the first set of hologram spots being representative of a first portion of the hologram.
1 more element
A computer readable medium storing a computer program for generating a hologram on a first disc surface, comprising:
- computer readable code for determining a position of at least one calibration spot on the first disc surface, wherein the calibration spot has a calibration spot positioning that is equal to or less than one-half a wavelength of light;
- computer readable code for controlling a device for reading the calibration spot to ascertain the calibration spot positioning;
- and
- computer readable code for controlling a device for writing a first set of hologram spots onto a second disc surface based on the calibration spot positioning, the first set of hologram spots being representative of a first portion of the hologram.
1 more element
Dependencies are inferred from the claim text.