DK0614319T3 - TV projection system - Google Patents

TV projection system

Info

Publication number
DK0614319T3
DK0614319T3 DK93121128.8T DK93121128T DK0614319T3 DK 0614319 T3 DK0614319 T3 DK 0614319T3 DK 93121128 T DK93121128 T DK 93121128T DK 0614319 T3 DK0614319 T3 DK 0614319T3
Authority
DK
Denmark
Prior art keywords
colour
projection system
lasers
mixer
screen
Prior art date
Application number
DK93121128.8T
Other languages
Danish (da)
Inventor
Christhard Deter
Dirk Loeffler
Original Assignee
Ldt Gmbh & 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 Ldt Gmbh & Co filed Critical Ldt Gmbh & Co
Application granted granted Critical
Publication of DK0614319T3 publication Critical patent/DK0614319T3/en

Links

Classifications

    • 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
    • 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]
    • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/67—Circuits for processing colour signals for matrixing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Processing Of Color Television Signals (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Projection Apparatus (AREA)

Abstract

A t.v. projection system provides a colour image on a screen (20) using light provided by three lasers (32, 42, 52), supplied to an optical device (60) for colour mixing, deflection and focussing in correspondence with a given television standard. The wavelengths of the light signals are 620 nm, 545 nm and 470 nm, the colour tones defined by colour value signals supplied from an input circuit to a mixer (20) converting them from the original base system for a phosphor television screen to a second base system for the laser projection system, each output signal (R', G', B') of the mixer being fed to a respective modulator (34, 44, 54) associated with one of the lasers.
DK93121128.8T 1993-03-04 1993-12-30 TV projection system DK0614319T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4306797A DE4306797C1 (en) 1993-03-04 1993-03-04 Generating colour pixels of TV image - providing projection system using coloured lasers supplied with colour tone signals converted from phosphor screen base system to laser projection base system

Publications (1)

Publication Number Publication Date
DK0614319T3 true DK0614319T3 (en) 1997-08-25

Family

ID=6481946

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93121128.8T DK0614319T3 (en) 1993-03-04 1993-12-30 TV projection system

Country Status (9)

Country Link
EP (1) EP0614319B1 (en)
KR (1) KR0140825B1 (en)
AT (1) ATE151938T1 (en)
DE (2) DE4306797C1 (en)
DK (1) DK0614319T3 (en)
ES (1) ES2101210T3 (en)
GR (1) GR3023371T3 (en)
UA (1) UA26453C2 (en)
ZA (1) ZA94898B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339908C2 (en) * 1993-11-23 1997-01-23 Ldt Gmbh & Co Method and device for pyramidal error compensation
DE4432029C2 (en) * 1994-09-08 1997-08-21 Ldt Gmbh & Co Laser color image display and projection device
DE19504047C1 (en) * 1995-02-08 1996-07-25 Daimler Benz Ag Laser system for color image projection
DE19506595C1 (en) * 1995-02-24 1996-02-01 Schneider Rundfunkwerke Ag Transformation of colour signals in colour video system
DE19510423C2 (en) * 1995-03-24 2001-04-26 Linos Photonics Gmbh Laser arrangement for internal resonance frequency mixing
DE19546039A1 (en) * 1995-12-09 1997-06-12 Forsch Mineralische Und Metall Screen, method for its production and method and device for displaying images on a screen
DE19713433C2 (en) * 1997-04-01 1999-02-25 Ldt Gmbh & Co Method and device for generating at least three light beams of different wavelengths, in particular for a colored image
DE19805553A1 (en) * 1998-02-11 1999-08-19 Ldt Gmbh & Co Measuring intensity of laser light
EP1073930B1 (en) 1998-04-23 2002-10-02 Linos Photonics GmbH Transverse electro-optic modulator
DE19939617A1 (en) * 1999-08-20 2001-03-29 Deltamed Medizinprodukte Gmbh Device and method for producing a three-dimensional object
DE10252591B9 (en) * 2002-11-12 2007-01-25 Lumera Laser Gmbh Method for imaging a video image with at least three laser beams
DE102010034217A1 (en) * 2010-08-07 2012-02-09 Daimler Ag Apparatus for generating images composed of pixels
CN104181546B (en) * 2014-08-25 2017-01-11 中国科学院武汉物理与数学研究所 Color information acquisition and display method of color three-dimensional scanning laser radar
JP6320440B2 (en) 2015-08-04 2018-05-09 ドルビー ラボラトリーズ ライセンシング コーポレイション Signal reconstruction for high dynamic range signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1300781A (en) * 1969-03-07 1972-12-20 Philips Electronic Associated Circuit arrangement for colour point adjustment
DE3368167D1 (en) * 1982-01-19 1987-01-15 Cavendish Dwight Holdings Ltd Light projection apparatus
DE3435538A1 (en) * 1984-09-27 1986-04-03 Robert 6000 Frankfurt Hanus Method for reproducing original documents
US4684996A (en) * 1986-08-25 1987-08-04 Eastman Kodak Company Video projector with optical feedback
JPS63278470A (en) * 1987-05-09 1988-11-16 Sharp Corp Color conversion method
US4989079A (en) * 1987-10-23 1991-01-29 Ricoh Company, Ltd. Color correction device and method having a hue area judgement unit
JP2565976B2 (en) * 1988-04-04 1996-12-18 三菱電機株式会社 Projection television
JPH07119128B2 (en) * 1989-05-08 1995-12-20 三菱電機株式会社 Color signal correction circuit

Also Published As

Publication number Publication date
GR3023371T3 (en) 1997-08-29
UA26453C2 (en) 1999-08-30
ES2101210T3 (en) 1997-07-01
KR940023225A (en) 1994-10-22
KR0140825B1 (en) 1998-06-15
EP0614319A2 (en) 1994-09-07
DE59306192D1 (en) 1997-05-22
DE4306797C1 (en) 1994-05-05
ZA94898B (en) 1994-08-23
ATE151938T1 (en) 1997-05-15
EP0614319A3 (en) 1996-01-31
EP0614319B1 (en) 1997-04-16

Similar Documents

Publication Publication Date Title
US6191826B1 (en) Projector apparatus
DK0614319T3 (en) TV projection system
US5440352A (en) Laser-driven television projection system with attendant color correction
US6220710B1 (en) Electro-optic projection display with luminosity channel
CA2142715A1 (en) Projection system for projecting a color video picture and transformation optical system for same
WO1998014828A3 (en) Image projection system
RU94006803A (en) PROJECTION TELEVISION SYSTEM
FI922233A (en) TILLSTAONDSKONVERTER
EP1345455A3 (en) Laser video projector having multi-channel acousto-optic modulator, and method and circuit for driving the same
KR900017293A (en) Audio and video switching device
CA2147919A1 (en) Video Projector with Luminance and Chrominance Optical Modulation LCD's
EP0035500A1 (en) Laser-based image recording system
US6567605B1 (en) Fiber optic projection device
CA2104443A1 (en) Apparatus for Receiving and Displaying Color Television Signals Having Different Formats
EP0295673A3 (en) Light scanning apparatus
US3639684A (en) Field sequential laser scan for night color television
WO1996021996A3 (en) Colour pixel light separation in a projection device
US4755875A (en) Telecine apparatus including an electro-optical image transducer illuminated by a bias light source
GB2252173A (en) Colour optical output system
JPS54143241A (en) Recorder
EP1094673A2 (en) Projecting device for displaying electronic images
JP2965227B2 (en) Character MIX circuit
GB2252172A (en) Colour optical output system
AU5980680A (en) Laser-based image recording system
DE59009982D1 (en) Device for coding color television signals