GB1472622A - Holographic coding of microfilm - Google Patents

Holographic coding of microfilm

Info

Publication number
GB1472622A
GB1472622A GB3596374A GB3596374A GB1472622A GB 1472622 A GB1472622 A GB 1472622A GB 3596374 A GB3596374 A GB 3596374A GB 3596374 A GB3596374 A GB 3596374A GB 1472622 A GB1472622 A GB 1472622A
Authority
GB
United Kingdom
Prior art keywords
microfilm
image
holographic images
aug
frames
Prior art date
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
GB3596374A
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of GB1472622A publication Critical patent/GB1472622A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/126—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by photographic or thermographic registration
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C11/00—Auxiliary processes in photography
    • G03C11/02—Marking or applying text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Holo Graphy (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

1472622 Microfilms XEROX CORP 15 Aug 1974 [16 Aug 1973] 35963/74 Heading G2X A microfilm or the like 10 has its microimage frames 12, 14, 16 coded by holographic images 18 to 20 disposed adjacent each frame or each series of frames. The microimages may be formed by a computer system wherein information is written one frame at a time by an electron beam forming an image on the phosphor face of a cathode ray tube, the image being projected through a lens system 30 on to the microfilm or the like. The holographic images are formed using a coherent light source 26, a beam splitter 27 and data reflectors 24a, 24b, 24c....., the latter being selectively activated by moving them into positions in which they reflect the light or by changing their reflectivity, e.g. by altering their surface characteristics using liquid crystals or other optically responsive materials. The holographic images may be in the form of a binary code, and during the recording of each image the other image areas may be masked. The holographic images are automatically searched using photoelectric detectors (29a), (29b), (29c) ..., Fig. 3 (not shown), the microfilm or the like being stopped when the desired code is detected.
GB3596374A 1973-08-16 1974-08-15 Holographic coding of microfilm Expired GB1472622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38887173A 1973-08-16 1973-08-16

Publications (1)

Publication Number Publication Date
GB1472622A true GB1472622A (en) 1977-05-04

Family

ID=23535878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3596374A Expired GB1472622A (en) 1973-08-16 1974-08-15 Holographic coding of microfilm

Country Status (5)

Country Link
JP (1) JPS5051322A (en)
DE (1) DE2434709A1 (en)
FR (1) FR2241096B1 (en)
GB (1) GB1472622A (en)
NL (1) NL7409582A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588665A (en) * 1982-11-22 1986-05-13 Drexler Technology Corporation Micrographic film member with laser written data
GB2218219A (en) * 1988-05-04 1989-11-08 British Aerospace A reflective mask
GB2235063A (en) * 1989-07-31 1991-02-20 Cookson Group Plc Security printing
WO2018075185A1 (en) * 2016-10-21 2018-04-26 Sony Interactive Entertainment Inc. Dynamic display using holographic recorded pixels

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216802A1 (en) * 1982-05-05 1983-11-10 Dr. Welp Entwicklungs-Kg, 6350 Bad Nauheim Method for producing microfilm cards, a microfilm card produced in accordance with this method, and a device for carrying out the method
WO1986005300A1 (en) * 1985-03-01 1986-09-12 Kenneth John Hayden Holographic security devices and systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588665A (en) * 1982-11-22 1986-05-13 Drexler Technology Corporation Micrographic film member with laser written data
GB2218219A (en) * 1988-05-04 1989-11-08 British Aerospace A reflective mask
GB2218219B (en) * 1988-05-04 1992-09-16 British Aerospace A mask assembly for defining an image
GB2235063A (en) * 1989-07-31 1991-02-20 Cookson Group Plc Security printing
WO2018075185A1 (en) * 2016-10-21 2018-04-26 Sony Interactive Entertainment Inc. Dynamic display using holographic recorded pixels
US10444704B2 (en) 2016-10-21 2019-10-15 Sony Interactive Entertainment Inc. Dynamic display using holographic recorded pixels

Also Published As

Publication number Publication date
FR2241096B1 (en) 1977-01-07
NL7409582A (en) 1974-11-25
FR2241096A1 (en) 1975-03-14
JPS5051322A (en) 1975-05-08
DE2434709A1 (en) 1975-02-27

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee