GB931568A - Reproduction of multi-coloured patterns - Google Patents

Reproduction of multi-coloured patterns

Info

Publication number
GB931568A
GB931568A GB667961A GB667961A GB931568A GB 931568 A GB931568 A GB 931568A GB 667961 A GB667961 A GB 667961A GB 667961 A GB667961 A GB 667961A GB 931568 A GB931568 A GB 931568A
Authority
GB
United Kingdom
Prior art keywords
photo
cell
output
amplifier
colour
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
GB667961A
Inventor
John William Willis Smith
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.)
WALL PAPER MANUFACTURERS Ltd
Original Assignee
WALL PAPER MANUFACTURERS Ltd
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 WALL PAPER MANUFACTURERS Ltd filed Critical WALL PAPER MANUFACTURERS Ltd
Priority to GB667961A priority Critical patent/GB931568A/en
Publication of GB931568A publication Critical patent/GB931568A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/54—Conversion of colour picture signals to a plurality of signals some of which represent particular mixed colours, e.g. for textile printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

931,568. Coloured-pattern reproducer. WALL PAPER MANUFACTURERS Ltd. March 26, 1962 [Feb. 23, 1961], No. 6679/61. Class 40 (3). The invention is concerned with reproducing photographically a single colour from a multicoloured pattern (e.g. wall paper, textiles or coloured cartoons) and is characterized in that the reproducing head is controlled by electrical signals proportional to colour (defined as to both hue and saturation) and the brightness of the original colour. As shown, the rotatable drums 1, 2 around which are wrapped the original picture and the photo-sensitive paper respectively are movable axially so that corresponding points on the periphery of each drum follow a common helical path. Light from the lamp 3 is reflected into the four-way beam splitter 4. Three of these beams are passed through red, green and blue filters respectively to fall on photo-cells 6, 7 and 8. The output from each cell is D.C. amplified and applied to the magnetic deflection coils (arranged mutually at 120 degrees) of the C.R.T. 12. The gain of the amplifiers 9, 10, 11 is manually preset (using a neutral step wedge) to align an " image " of the correct due with the aperture in the mask 17 to energize the photo-cell 14. The fourth beam from the beam splitter 4 activates photocell 5, the output from which is applied to amplifier 13 which produces an output only when the input signal lies between pre-set limits (that is the original picture is of a preselected brightness). The amplifier 15 is triggered by coincident signals from photo-cell 14 and amplifier 13 to activate the crater lamp 16. In alternative arrangements (not shown), the cell 5 is responsive to the integrated output of the cells 6, 7 and 8. The C.R.T. 12, the mask 17 and the photo-cell 14 may be replaced by a corresponding electrical network.
GB667961A 1961-02-23 1961-02-23 Reproduction of multi-coloured patterns Expired GB931568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB667961A GB931568A (en) 1961-02-23 1961-02-23 Reproduction of multi-coloured patterns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB667961A GB931568A (en) 1961-02-23 1961-02-23 Reproduction of multi-coloured patterns

Publications (1)

Publication Number Publication Date
GB931568A true GB931568A (en) 1963-07-17

Family

ID=9818823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB667961A Expired GB931568A (en) 1961-02-23 1961-02-23 Reproduction of multi-coloured patterns

Country Status (1)

Country Link
GB (1) GB931568A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853511A1 (en) * 1978-12-12 1980-06-19 Hell Rudolf Dr Ing Gmbh METHOD FOR PRODUCING COLOR EXTRACTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853511A1 (en) * 1978-12-12 1980-06-19 Hell Rudolf Dr Ing Gmbh METHOD FOR PRODUCING COLOR EXTRACTS

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