WO1987002505A3 - Associative holographic memory apparatus employing phase conjugate mirrors - Google Patents

Associative holographic memory apparatus employing phase conjugate mirrors Download PDF

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Publication number
WO1987002505A3
WO1987002505A3 PCT/US1986/002033 US8602033W WO8702505A3 WO 1987002505 A3 WO1987002505 A3 WO 1987002505A3 US 8602033 W US8602033 W US 8602033W WO 8702505 A3 WO8702505 A3 WO 8702505A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase conjugate
memory apparatus
apparatus employing
holographic memory
mirrors
Prior art date
Application number
PCT/US1986/002033
Other languages
French (fr)
Other versions
WO1987002505A2 (en
Inventor
Emanuel Marom
Bernard H Soffer
Yuri Owechko
Gilmore J Dunning
David M Pepper
Marvin B Klein
Richard C Lind
Original Assignee
Hughes Aircraft Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Priority to DE8787900360T priority Critical patent/DE3673404D1/en
Publication of WO1987002505A2 publication Critical patent/WO1987002505A2/en
Publication of WO1987002505A3 publication Critical patent/WO1987002505A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/06—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons
    • G06N3/067—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using optical means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C15/00—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores

Abstract

Associative holography memory apparatus (10) which employs a hologram (12) and two phase conjugate mirrors (14, 16). The mirrors (14, 16) are arranged to form a conjugate resonator whereby the output image (44) from the apparatus tends to converge to that stored image most closely associated with an input image (32). Alternate embodiments are described which employ a multiple storage and erasure hologram (52), and which employ only a single phase conjugate mirror (14).
PCT/US1986/002033 1985-10-11 1986-09-26 Associative holographic memory apparatus employing phase conjugate mirrors WO1987002505A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8787900360T DE3673404D1 (en) 1985-10-11 1986-09-26 ASSOCIATIVE, HOLOGRAPHIC STORAGE DEVICE USING PHASE-CONJUGATED MIRRORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US786,884 1985-10-11
US06/786,884 US4739496A (en) 1985-10-11 1985-10-11 Associative holographic memory apparatus employing phase conjugate mirrors

Publications (2)

Publication Number Publication Date
WO1987002505A2 WO1987002505A2 (en) 1987-04-23
WO1987002505A3 true WO1987002505A3 (en) 1987-07-16

Family

ID=25139848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/002033 WO1987002505A2 (en) 1985-10-11 1986-09-26 Associative holographic memory apparatus employing phase conjugate mirrors

Country Status (6)

Country Link
US (1) US4739496A (en)
EP (1) EP0243492B1 (en)
JP (1) JPS63501751A (en)
DE (1) DE3673404D1 (en)
IL (1) IL79991A0 (en)
WO (1) WO1987002505A2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63292495A (en) * 1987-05-25 1988-11-29 Agency Of Ind Science & Technol Optical-electric hybrid type associative storage device
US5526298A (en) * 1987-06-10 1996-06-11 Hamamatsu Photonics K.K. Optical associative memory
JPH067240B2 (en) * 1987-06-10 1994-01-26 浜松ホトニクス株式会社 Optical associative memory
US4860253A (en) * 1987-06-19 1989-08-22 Hughes Aircraft Company Associative memory system with spatial light modulator and feedback for adjustable thresholding and enhancement
US4837843A (en) * 1987-06-19 1989-06-06 Hughes Aircraft Company Hybrid optical and electronic associative memory
US4961615A (en) * 1987-06-19 1990-10-09 Hughes Aircraft Company Associative memory system with spatial light modulator
US4934782A (en) * 1988-01-19 1990-06-19 Hughes Aircraft Company Optical thresholding apparatus and method
US5132835A (en) * 1988-07-18 1992-07-21 Northrop Corporation Continuous-time optical neural network process
US5099434A (en) * 1988-07-18 1992-03-24 Northrop Corporation Continuous-time optical neural network
US5132813A (en) * 1988-08-18 1992-07-21 Teledyne Industries, Inc. Neural processor with holographic optical paths and nonlinear operating means
US5004309A (en) * 1988-08-18 1991-04-02 Teledyne Brown Engineering Neural processor with holographic optical paths and nonlinear operating means
US5214745A (en) * 1988-08-25 1993-05-25 Sutherland John G Artificial neural device utilizing phase orientation in the complex number domain to encode and decode stimulus response patterns
US4953954A (en) * 1989-02-10 1990-09-04 Rockwell International Corporation Phase-conjugate communication using mutually incoherent laser beams
US4934779A (en) * 1989-04-24 1990-06-19 Hughes Aircraft Company System and method for low noise optical retroreflection with gain
US5361328A (en) * 1989-09-28 1994-11-01 Ezel, Inc. Data processing system using a neural network
JP2724374B2 (en) * 1989-10-11 1998-03-09 株式会社鷹山 Data processing device
US5039182A (en) * 1989-10-23 1991-08-13 International Business Machines Corporation Storing information in dual holographic images
WO1991014202A1 (en) * 1990-03-15 1991-09-19 Nippon Telegraph And Telephone Corporation All optical image processing and pattern recognition apparatus using stimulated photon echoes
US5120133A (en) * 1990-12-21 1992-06-09 United States Of America Is Represented By The Secretary Of The Navy Interferometer with two phase-conjugate mirrors
US5729660A (en) * 1994-05-03 1998-03-17 Chiabrera; Alessandro 3-D inverse scattering by artificial intelligence : apparatus and method
WO2005066939A2 (en) * 2003-12-30 2005-07-21 Aprilis, Inc. Replication of data to holographic medium
US7161723B1 (en) * 2004-09-03 2007-01-09 Storage Technology Corporation Scheme capable of providing gain and thresholding to the parallel recording and replication of holographic media
US20120036098A1 (en) * 2007-06-14 2012-02-09 The Boeing Company Analyzing activities of a hostile force
US10168599B2 (en) 2016-01-26 2019-01-01 The Boeing Company System and method for time reversal situational awareness

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600054A (en) * 1965-08-13 1971-08-17 Ibm Holographic associative memory permitting conversion of a pattern to a machine-readable form

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614191A (en) * 1968-03-29 1971-10-19 Nippon Electric Co Associative memory employing holography
US4005935A (en) * 1975-07-31 1977-02-01 Hughes Aircraft Company Method and apparatus for providing a phase compensated optical beam
US4275454A (en) * 1978-12-01 1981-06-23 Environmental Research Institute Of Michigan Optical system phase error compensator
US4529273A (en) * 1982-12-21 1985-07-16 California Institute Of Technology Passive phase conjugate mirror
US4598973A (en) * 1984-03-07 1986-07-08 Greenleaf James F Apparatus and method for recording and displaying a three-dimensional image

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600054A (en) * 1965-08-13 1971-08-17 Ibm Holographic associative memory permitting conversion of a pattern to a machine-readable form

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Journal of Reaerch and Development, Volume 13, No. 2, March 1969, (New York, US), D. GABOR: "Associative Holographic Memories", see page 156-159 *

Also Published As

Publication number Publication date
EP0243492B1 (en) 1990-08-08
EP0243492A1 (en) 1987-11-04
IL79991A0 (en) 1986-12-31
US4739496A (en) 1988-04-19
JPS63501751A (en) 1988-07-14
DE3673404D1 (en) 1990-09-13
WO1987002505A2 (en) 1987-04-23

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