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7355767 |
Hologram recording method and hologram recording apparatus
A hologram recording method includes generating a signal beam with data formed by superimposing pattern data, the pattern data representing a pattern in which a large number of plural kinds of...
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7274649 |
Holographic ROM system
A holographic ROM system of the present invention includes a lens unit for filtering and collimating an output radiation diffracted from a holographic disk in order to produce an output data beam....
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7230747 |
Hologram retention method
Information recorded as a hologram in a predetermined position of an optical recording medium is reproduced, and subsequently the reproduced information is re-recorded and retained in the same...
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7193963 |
Method for inputting information into a data storage medium that is optically recordable and readable
In a method of entering information into an optically writable and readable data storage medium having a polymer film which can be changed locally by heating in order to store information and to...
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7158273 |
Holographic data memory
A holographic data storage medium has a polymer film which is set up as a storage layer whose refractive index can be changed locally by heating. The polymer film is set up for the storage of...
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7154646 |
Optical recording apparatus and optical recording/reproducing apparatus
An optical recording/reproducing apparatus having excellent resistance against vibration and noise. In recording, coherent light is polarization-modulated with a spatial light modulator to generate...
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7151623 |
Holographic data-storage medium
In an example holographic data storage medium, which has a polymer film which serves as a storage layer and can be changed locally by heating, the polymer film is set up as a top layer of the data...
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7148468 |
Mirror angle measurement and servo control apparatus for holographic digital data storage system
A mirror angle measurement and a servo control apparatus for a Holographic Digital Data Storage (HDDS) system is disclosed. The mirror angle measurement apparatus includes a first mirror having a...
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7054261 |
Data storage medium including optical information carrier
An example data storage medium includes an optical information carrier which comprises a polymer carrier, which is set up to store information, and, additionally, a layer. The layer comprises a dye...
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7027376 |
Method for optical data recording and reproducing
The invention concerns a method for optical recording of data on a photosensitive storage medium, characterized in that the data are encoded according to different possible states for the various...
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7023786 |
Hologram recording and reproducing apparatus
A hologram recording and reproducing apparatus preforms to record data on a recording medium and reproduce data from the recording medium. The recording medium is made of a photorefractive crystal...
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7002891 |
Apparatus and method for recording and reproducing information to and from an optical storage medium
Holographic recording and reproducing using a compact configuration provides no reduction in the recording/reproducing capability. Information light and recording-specific reference light having a...
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6882613 |
Cylindrical medium for storing holographic data and methods and apparatus for manipulating data using the cylindrical medium
Holographic data is stored in a cylindrical crystal by directing a signal beam with data encoded therewith axially through an end face of the crystal, which signal beam interferes with a reference...
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6803153 |
Optical storage medium, optical storage method; optical storage apparatus, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus
An optical storage medium of the present invention enables storage of data with high precision at high speed, and rewriting of data at high speed without an erasing process. Optical storage,...
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