GB1232993A - - Google Patents

Info

Publication number
GB1232993A
GB1232993A GB3497767A GB1232993DA GB1232993A GB 1232993 A GB1232993 A GB 1232993A GB 3497767 A GB3497767 A GB 3497767A GB 1232993D A GB1232993D A GB 1232993DA GB 1232993 A GB1232993 A GB 1232993A
Authority
GB
United Kingdom
Prior art keywords
display
colour
controlled
eidophors
eidophor
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
GB3497767A
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 filed Critical
Publication of GB1232993A publication Critical patent/GB1232993A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1,232,993. Colour television display apparatus. E.M.I. Ltd. 28 June, 1968 [29 July, 1967], No. 34977/67. Heading H4F. Display apparatus for colour television comprises a high definition display means 4 for establishing the brightness aspects of a display, and three lower definition display means 1, 2, 3 for establishing the colour aspects of the display, wherein the control on the lower definition display tends to affect the brightness of the display in a predetermined manner and the high definition display is controlled in such a way as to substantially neutralize this tendency. The three low definition displays 1, 2, 3 are eidophors scanned so as to produce displays representing the red, green and blue components of the scene, these being brought together by mirrors and passed through a fourth eidophor 4 controlled by the luminance signal, the resultant light beam forming the final colour picture display on a screen 5. Alternatively, Fig. 3 (not shown), four eidophors having sources of red, green, blue and white light respectively are each scanned and the four displays are brought together by a mirror system, the red, green and blue eidophors being controlled by colour component signals to form a low definition picture and the white eidophor being controlled by the luminance signal from which the brightness component already supplied by the other tubes has been removed. It is arranged that the A.C. control signal of the fourth eidophor contains no negative excursions.
GB3497767A 1967-07-29 1967-07-29 Expired GB1232993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3497767 1967-07-29

Publications (1)

Publication Number Publication Date
GB1232993A true GB1232993A (en) 1971-05-26

Family

ID=10372339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3497767A Expired GB1232993A (en) 1967-07-29 1967-07-29

Country Status (1)

Country Link
GB (1) GB1232993A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191057A (en) * 1986-05-19 1987-12-02 Philips Electronic Associated Colour video display arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191057A (en) * 1986-05-19 1987-12-02 Philips Electronic Associated Colour video display arrangement

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed