EP0385706A3 - Apparatus and method for digitized video system - Google Patents

Apparatus and method for digitized video system Download PDF

Info

Publication number
EP0385706A3
EP0385706A3 EP19900302049 EP90302049A EP0385706A3 EP 0385706 A3 EP0385706 A3 EP 0385706A3 EP 19900302049 EP19900302049 EP 19900302049 EP 90302049 A EP90302049 A EP 90302049A EP 0385706 A3 EP0385706 A3 EP 0385706A3
Authority
EP
European Patent Office
Prior art keywords
display screen
video system
digitized video
light projector
associated points
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.)
Granted
Application number
EP19900302049
Other languages
German (de)
French (fr)
Other versions
EP0385706B1 (en
EP0385706A2 (en
Inventor
E. Earle Thompson
W. Thomas Demond
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of EP0385706A2 publication Critical patent/EP0385706A2/en
Publication of EP0385706A3 publication Critical patent/EP0385706A3/en
Application granted granted Critical
Publication of EP0385706B1 publication Critical patent/EP0385706B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

A digitized video system with an increased viewing angle having a light projector and a display screen. The light projector generating a plurality of narrow light beams to impinge on the display screen at a plurality of associated points. The display screen has a transducer generating surface acoustic waves which traverse the associated points. This results in reduced laser speckle.
EP19900302049 1989-02-27 1990-02-27 Apparatus and method for digitized video system Expired - Lifetime EP0385706B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US31566189A 1989-02-27 1989-02-27
US31593989A 1989-02-27 1989-02-27
US31574589A 1989-02-27 1989-02-27
US315939 1989-02-27
US315745 1989-02-27
US315661 1989-02-27

Publications (3)

Publication Number Publication Date
EP0385706A2 EP0385706A2 (en) 1990-09-05
EP0385706A3 true EP0385706A3 (en) 1991-07-31
EP0385706B1 EP0385706B1 (en) 1995-05-03

Family

ID=27405811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900302049 Expired - Lifetime EP0385706B1 (en) 1989-02-27 1990-02-27 Apparatus and method for digitized video system

Country Status (3)

Country Link
EP (1) EP0385706B1 (en)
JP (1) JPH0340694A (en)
DE (1) DE69019043T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0884914A1 (en) * 1993-02-03 1998-12-16 Nitor Methods and apparatus for image projection
JPH08172644A (en) * 1994-12-16 1996-07-02 Hidetake Tanaka Stereoscopic television receiver
US6421165B2 (en) 1996-02-07 2002-07-16 Light & Sound Design Ltd. Programmable light beam shape altering device using programmable micromirrors
US5828485A (en) * 1996-02-07 1998-10-27 Light & Sound Design Ltd. Programmable light beam shape altering device using programmable micromirrors
US6288828B1 (en) 1997-09-10 2001-09-11 Light And Sound Design Ltd. Programmable light beam shape altering device using programmable micromirrors
DE19623179C2 (en) * 1996-06-11 2001-03-29 Linos Photonics Gmbh Method and device for reducing spot formation in laser projection
JP2001189520A (en) * 1999-12-28 2001-07-10 Sony Corp Light source device and projection type display using the same
JP2007249137A (en) * 2006-03-20 2007-09-27 Seiko Epson Corp Transmission type screen and rear projection television
CN109584777B (en) 2019-01-24 2020-11-20 京东方科技集团股份有限公司 Wearable display device and display control method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139991A2 (en) * 1983-09-08 1985-05-08 Texas Instruments Incorporated Optical system for projection display using spatial light modulator (1111111)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565940A (en) * 1978-11-13 1980-05-17 Matsushita Electric Ind Co Ltd Laser image display device
JPS5772392A (en) * 1980-10-24 1982-05-06 Mitsubishi Electric Corp Coupler for semiconductor laser and optical fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139991A2 (en) * 1983-09-08 1985-05-08 Texas Instruments Incorporated Optical system for projection display using spatial light modulator (1111111)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, vol. SU-23, no. 1, January 1976, pages 2-22; IC. CHANG: "I. Acoustooptic devices and applications" *
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 107 (P-21)[589], 31st July 1980; & JP-A-55 065 940 (MATSUSHITA DENKI SANGYO K.K.) 17-05-1980 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 151 (E-124)[1029], 11th August 1982; & JP-A-57 72 392 (MITSUBISHI DENKI K.K.) 06-05-1982 *

Also Published As

Publication number Publication date
EP0385706B1 (en) 1995-05-03
DE69019043D1 (en) 1995-06-08
DE69019043T2 (en) 1995-08-31
EP0385706A2 (en) 1990-09-05
JPH0340694A (en) 1991-02-21

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