GB1439169A - Creation of Inventions and Patents with Artificial Intelligence

GB1439169A – Storage device for associative memory
– Google Patents

GB1439169A – Storage device for associative memory
– Google Patents
Storage device for associative memory

Info

Publication number
GB1439169A

GB1439169A
GB5527773A
GB5527773A
GB1439169A
GB 1439169 A
GB1439169 A
GB 1439169A
GB 5527773 A
GB5527773 A
GB 5527773A
GB 5527773 A
GB5527773 A
GB 5527773A
GB 1439169 A
GB1439169 A
GB 1439169A
Authority
GB
United Kingdom
Prior art keywords
word
plates
bit
associative memory
areas
Prior art date
1972-11-29
Legal status (The legal status 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 status listed.)

Expired

Application number
GB5527773A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Bull HN Information Systems Italia SpA

Original Assignee
Honeywell Information Systems Italia SpA
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.)
1972-11-29
Filing date
1973-11-28
Publication date
1976-06-09

1973-11-28
Application filed by Honeywell Information Systems Italia SpA
filed
Critical
Honeywell Information Systems Italia SpA

1973-11-29
Priority to AU63047/73A
priority
Critical
patent/AU480953B2/en

1976-06-09
Publication of GB1439169A
publication
Critical
patent/GB1439169A/en

Status
Expired
legal-status
Critical
Current

Links

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Global Dossier

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Classifications

G—PHYSICS

G11—INFORMATION STORAGE

G11C—STATIC STORES

G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00

G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam

G11C13/048—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using other optical storage elements

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

1439169 Associative memory systems HONEYWELL INFORMATION SYSTEMS ITALIA SpA 28 Nov 1973 [29 Nov 1972] 55277/73 Heading G4A An associative memory comprises, for each bit of the stored data, a storage area having three sections m, n, p (Fig. 1), one of which p is always transparent and one of the other two being opaque in dependence on the value of the stored bit. The storage areas are on plates 32, 33, 34, there being one plate for each bit position, bits of a word being aligned, and the plates are interspaced with electro-optical shifting devices so that in dependence on the required content of a search word, a beam of radiation may be directed on to one or other of the areas m, n for a “0” or “1” respectively and on to the area p for immaterial values. Preferably a plurality of laser beams, one for each word position, are directed on to the plates, photodetectors 51 which correspond to stored words matching the interrogation word being illuminated. The electro-optical devices comprise polarizers 5, 7, 15, 17, 19, formed by potassium dideuterate phosphate which rotate the polarization plane by 90 degrees when voltages V 0 , V1 0 . V11 0 , V 1 , V1 1 . . . are applied and slabs of birefringent calcite crystal 6, 8, 9, 16, 18, 20 which shift suitably polarized light either vertically or horizontally. Switches permitting the application of the voltages to the polarizers are controlled by logic circuitry (Fig. 2, not shown) the circuitry for each bit position receiving an input signal W n-1 derived from the control signals of the preceeding stage (for example W1 = V 0 .V 1 +V 0 .V 1 ) and a signal m m , P n or n n . Modification.-The stored words may be examined sequentially in which case only a single photodetector is necessary. The density of the recorded information may be increased by having the three areas m, n, p vertically aligned (with p in the middle).

GB5527773A
1972-11-29
1973-11-28
Storage device for associative memory

Expired

GB1439169A
(en)

Priority Applications (1)

Application Number
Priority Date
Filing Date
Title

AU63047/73A

AU480953B2
(en)

1972-11-30
1973-11-29
Amino derivatives of 2, 2-diaryl-cylopropane

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

IT32200/72A

IT971303B
(en)

1972-11-29
1972-11-29

OPTICAL ASSOCIATIVE MEMORY WITH SERIAL COINCIDENCE

Publications (1)

Publication Number
Publication Date

GB1439169A
true

GB1439169A
(en)

1976-06-09

Family
ID=11234987
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB5527773A
Expired

GB1439169A
(en)

1972-11-29
1973-11-28
Storage device for associative memory

Country Status (5)

Country
Link

US
(1)

US3868655A
(en)

JP
(1)

JPS4984751A
(en)

DE
(1)

DE2347388A1
(en)

GB
(1)

GB1439169A
(en)

IT
(1)

IT971303B
(en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS5184655A
(en)

1975-01-24
1976-07-24
Fuji Xerox Co Ltd

US4333165A
(en)

1975-01-27
1982-06-01
Formigraphic Engine Corporation
Three-dimensional pattern making methods

FR2385266A1
(en)

1977-03-25
1978-10-20
Thomson Csf

ELECTRO-OPTICAL SWITCHING DEVICE AND TELEPHONE AUTOMOTE SWITCH INCLUDING SUCH A DEVICE

US4521773A
(en)

1981-08-28
1985-06-04
Xerox Corporation
Imaging array

US4521772A
(en)

1981-08-28
1985-06-04
Xerox Corporation
Cursor control device

JPS63292495A
(en)

1987-05-25
1988-11-29
Agency Of Ind Science & Technol
Optical-electric hybrid type associative storage device

JPH067240B2
(en)

1987-06-10
1994-01-26
浜松ホトニクス株式会社

Optical associative memory

US5526298A
(en)

1987-06-10
1996-06-11
Hamamatsu Photonics K.K.
Optical associative memory

US5053991A
(en)

1989-10-06
1991-10-01
Sanders Associates, Inc.
Content-addressable memory with soft-match capability

US5125098A
(en)

1989-10-06
1992-06-23
Sanders Associates, Inc.
Finite state-machine employing a content-addressable memory

US5285411A
(en)

1991-06-17
1994-02-08
Wright State University
Method and apparatus for operating a bit-slice keyword access optical memory

US5539543A
(en)

1994-01-27
1996-07-23
The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration
Reconfigurable optical interconnections via dynamic computer-generated holograms

Family Cites Families (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3407393A
(en)

1964-06-02
1968-10-22
Marquardt Corp
Electro-optical associative memory

1972

1972-11-29
IT
IT32200/72A
patent/IT971303B/en
active

1973

1973-09-17
DE
DE19732347388
patent/DE2347388A1/en
active
Pending

1973-11-01
US
US411950A
patent/US3868655A/en
not_active
Expired – Lifetime

1973-11-07
JP
JP48124597A
patent/JPS4984751A/ja
active
Pending

1973-11-28
GB
GB5527773A
patent/GB1439169A/en
not_active
Expired

Also Published As

Publication number
Publication date

US3868655A
(en)

1975-02-25

IT971303B
(en)

1974-04-30

JPS4984751A
(en)

1974-08-14

DE2347388A1
(en)

1974-06-06

Contact information