Diamond shaped holographic storage regions oriented along a common radial column line for higher storage density
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United States of America Patent
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Oct 15, 1996
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N/A
app pub date -
Jun 15, 1994
filing date -
Dec 23, 1993
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Abstract
A disk-based holographic storage media includes a disk fabricated from a holographic storage media. A plurality of holographic storage regions are defined within the storage media such that pages of holographic data can be stored therein in the form of an interference grating. A Read/Write head is provided for containing the optics necessary to read information from the holographic storage region and write information thereto. The Read/Write head moves along the radial direction of the disk with the disk stepped by a motor to discrete angular positions, comprising the address of the storage region along with radial positioning of the Read/Write head. Each of the storage regions is diamond-shaped and oriented such that the apexes thereof are oriented along a common radial column line. Adjacent columns have the storage regions disposed in alternating rows or tracks. This allows for a higher packing density.
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