Optical storage medium, optical storage method, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6452890
APP PUB NO 20010002895A1
SERIAL NO

09056798

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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, reading and retrieving methods and optical storage, reading, and retrieving apparatuses using the medium are also provided. The optical storage medium has at least a polarization-sensitive member having the photo-induced birefringence property, such as a member made of polyester polymer having cyanoazobenzene as a side chain. The above apparatuses have spatial light modulator capable of modulating polarization. The modulator provides information of bit of two-dimensional data to each corresponding pixel by application or non-application of a voltage, and modulates the polarization of the beam incident on each pixel. Thereby, a signal beam transmitted through the spatial light modulator having a spatial polarization modulation corresponding to the two-dimensional data is obtained. The signal beam illuminates the optical storage medium, and at the same time, a reference beam illuminates the same region in the medium where the signal beam illuminates. Thus a hologram of the polarization modulation of the signal beam corresponding to the two-dimensional data is stored in the optical storage medium.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJI XEROX CO., LTD.TOKYO7693

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishii, Tsutomu Nakai-machi, JP 133 824
Kawano, Katsunori Nakai-machi, JP 79 325
Nishikata, Yasunari Nakai-machi, JP 20 99

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
* 5719690 Photorefractive glass article 15 1996
* 6175543 Encoding technique of data patterns to improve signal-to-noise ratio during cantent-addressable retrieval 8 1998
 
WI-LAN INC. (1)
* 6101161 Volume holographic data storage system incorporating therein a cylindrical storage medium 6 1998
 
QUEEN'S UNIVERSITY AT KINGSTON (1)
* 5173381 Azo polymers for reversible optical storage 34 1991
 
MEDICAL ELECTRONIC IMAGING CORPORATION, A CORP. OF DE (1)
* 5024784 Device for reversible optical data storage using polymeric liquid crystals 25 1987
 
POLYTECHNIC UNIVERSITY (1)
* 5750049 Chiral optical polymer based information storage material 4 1996
 
IN-PHASE TECHNOLOGIES INC. (1)
* 5943145 Phase distance multiplex holography 28 1995
 
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (1)
* 5623475 Method of inscribing and readout of information in an information storage layer 2 1995
 
Research Investment Network, Inc. (1)
* 5995251 Apparatus for holographic data storage 52 1998
 
DAI NIPPON PRINTING CO., LTD. (1)
* 5587987 Information recording method having a liquid crystal substrate 10 1995
 
BAYER AKTIENGESELLSCHAFT (1)
* 5858585 Process for intensifying information in photo-addressable side-chain polymers 16 1997
 
MAXTOR CORPORATION (1)
* 5777760 Position feedback system for volume holographic storage media 52 1996
 
FORCETEC CO., LTD. (4)
* 5477347 Method and apparatus for isolating data storage regions in a thin holographic storage media 24 1993
* 5519517 Method and apparatus for holographically recording and reproducing images in a sequential manner 35 1993
* 5638193 Method and apparatus for azimuthal multiplexing of holograms 18 1994
* 5940537 Method and system for compensating for geometric distortion of images 16 1996
 
CHEN, ALAN G. (1)
* 5488597 Multilayer optical memory with means for recording and reading information 4 1994
 
SPARTA, INC. (1)
* 5319629 Content addressable optical data storage system 45 1992
 
SANWA BANK CALIFORNIA (1)
* 5384221 Birefringent azo dye polymer erasable optical storage medium 38 1993
 
COVESTRO DEUTSCHLAND AG (1)
* 6046290 Photoaddressable side group polymers of high sensitivity 19 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2003/0165,105 Data memory 7 2003
 
GENERAL ELECTRIC COMPANY (2)
* 7428205 Multi-layer holographic data reading method 2 2002
* 2004/0103,136 Multi-layer holographic data recording method 1 2002
 
SONY CORPORATION (3)
* 7606133 Hologram recording/reproducing device and hologram reproducing device 2 2006
* 7760611 Hologram reproducing apparatus 0 2007
* 2009/0028,032 HOLOGRAM REPRODUCING APPARATUS 1 2007
 
PIONEER CORPORATION (2)
* 7023786 Hologram recording and reproducing apparatus 3 2001
* 2002/0051,419 Hologram recording and reproducing apparatus 3 2001
 
NORTH CAROLINA STATE UNIVERSITY (3)
7485740 Devices containing chiroptical switching materials and methods of making and using the same 1 2006
* 2007/0170,422 Devices containing chiroptical switching materials and methods of making and using the same 0 2006
7790912 Devices containing chiroptical switching materials and methods of making and using the same 0 2008
 
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (4)
7274649 Holographic ROM system 0 2004
* 2004/0238,643 Holographic ROM system 1 2004
* 7148468 Mirror angle measurement and servo control apparatus for holographic digital data storage system 1 2004
* 2005/0247,864 Mirror angle measurement and servo control apparatus for holographic digital data storage system 0 2004
 
FUJI XEROX CO., LTD. (9)
* 6803153 Optical storage medium, optical storage method; optical storage apparatus, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus 5 2000
* 7230747 Hologram retention method 0 2004
* 2005/0041,270 Hologram retention method 0 2004
* 2004/0240,012 Hologram recording method and hologram recording apparatus 4 2004
* 2005/0208,387 Optical recording material, optical recording medium and optical recording/reproducing apparatus 9 2004
7355767 Hologram recording method and hologram recording apparatus 0 2005
* 2006/0050,339 Hologram recording method and hologram recording apparatus 1 2005
* 7154646 Optical recording apparatus and optical recording/reproducing apparatus 1 2006
* 2006/0193,022 Optical recording apparatus and optical recording/reproducing apparatus 0 2006
 
OPTWARE CORPORATION (3)
* 7002891 Apparatus and method for recording and reproducing information to and from an optical storage medium 11 2001
* 2004/0042,374 Optical information recording device and method, optical information reproducing device and method, and optical information recording/reproducing device and method 0 2003
* 2004/0027,968 Optical information recording apparatus and method, optical information reproducing apparatus and method, optical information recording reproducing apparatus and method and optical information recording medium 33 2003
 
Hampton University (2)
* 6882613 Cylindrical medium for storing holographic data and methods and apparatus for manipulating data using the cylindrical medium 2 2001
* 2003/0002,424 Cylindrical medium for storing holographic data and methods and apparatus for manipulating data using the cylindrical medium 1 2001
 
FRANCE TELECOM (2)
* 7027376 Method for optical data recording and reproducing 1 2001
* 2003/0123,117 Method for optical date recording 0 2002
 
TESA SCRIBOS GMBH (11)
* 7727678 Holographic data memory 0 2001
7158273 Holographic data memory 3 2001
7151623 Holographic data-storage medium 2 2002
7193963 Method for inputting information into a data storage medium that is optically recordable and readable 0 2002
* 2003/0142,619 Data memory 6 2002
* 2003/0165,746 Holographic data memory 10 2003
* 2003/0161,018 Holographic data memory 0 2003
* 2003/0156,524 Holographic data memory 7 2003
* 2004/0053,140 Use of a packaging strip as a holographic data carrier 11 2003
* 2004/0145,788 Holographic data-storage medium 0 2003
* 2004/0202,080 Method for inputting information into a data storage medium that is optically recordable and readable 0 2004
 
DELTA ELECTRONICS, INC. (1)
* 2005/0174,919 OPTICAL POLARIZATION CONTROLLER 2 2005
 
Agency for Science, Technology and Research (1)
* 2002/0034,693 Information recording method 8 2000
 
TESA AG (1)
7054261 Data storage medium including optical information carrier 1 2000
* Cited By Examiner