GB2265064B - Projection systems - Google Patents

Projection systems

Info

Publication number
GB2265064B
GB2265064B GB9204130A GB9204130A GB2265064B GB 2265064 B GB2265064 B GB 2265064B GB 9204130 A GB9204130 A GB 9204130A GB 9204130 A GB9204130 A GB 9204130A GB 2265064 B GB2265064 B GB 2265064B
Authority
GB
United Kingdom
Prior art keywords
projection systems
projection
systems
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 - Fee Related
Application number
GB9204130A
Other versions
GB9204130D0 (en
GB2265064A (en
Inventor
Benjamin Franklin Richmond
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.)
Rank Cintel Ltd
Original Assignee
Rank Cintel 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 Rank Cintel Ltd filed Critical Rank Cintel Ltd
Priority to GB9204130A priority Critical patent/GB2265064B/en
Publication of GB9204130D0 publication Critical patent/GB9204130D0/en
Publication of GB2265064A publication Critical patent/GB2265064A/en
Application granted granted Critical
Publication of GB2265064B publication Critical patent/GB2265064B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • H04N5/7458—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 an array of deformable mirrors, e.g. digital micromirror device [DMD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H04N3/2335—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements with calculating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
GB9204130A 1992-02-26 1992-02-26 Projection systems Expired - Fee Related GB2265064B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9204130A GB2265064B (en) 1992-02-26 1992-02-26 Projection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9204130A GB2265064B (en) 1992-02-26 1992-02-26 Projection systems

Publications (3)

Publication Number Publication Date
GB9204130D0 GB9204130D0 (en) 1992-04-08
GB2265064A GB2265064A (en) 1993-09-15
GB2265064B true GB2265064B (en) 1995-08-23

Family

ID=10711101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9204130A Expired - Fee Related GB2265064B (en) 1992-02-26 1992-02-26 Projection systems

Country Status (1)

Country Link
GB (1) GB2265064B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091446A (en) 1992-01-21 2000-07-18 Walker; Bradley William Consecutive frame scanning of cinematographic film

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2137059C (en) * 1993-12-03 2004-11-23 Texas Instruments Incorporated Dmd architecture to improve horizontal resolution
KR0173704B1 (en) * 1995-07-25 1999-03-20 배순훈 Asymmetric picture compensating apparatus for projector
JPH09200663A (en) * 1995-11-13 1997-07-31 Daewoo Electron Co Ltd Advance compensation method for asymmetrical image in projection type image display system
KR100188218B1 (en) * 1995-11-13 1999-06-01 전주범 Asymmetric picture compensating control method for projector
EP0777198A1 (en) * 1995-11-30 1997-06-04 Victor Company Of Japan, Limited Image processing apparatus
AT405471B (en) * 1996-10-21 1999-08-25 Jessl Rainer SYSTEM FOR THE SPACIOUS MOVEMENT OF THE PROJECTION RAY OF OPTOELECTRONIC IMAGE SOURCES WITH CORRECTION OF THE IMAGE ERROR
AU1648100A (en) * 1999-10-09 2001-04-23 Lutz Richter Device for projecting information onto an inclined surface
GB0022065D0 (en) 2000-09-08 2000-10-25 Wynne Willson Gottelier Ltd Image projection apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395662A (en) * 1981-05-27 1983-07-26 General Electric Company Correction circuits for projection television
US4571631A (en) * 1984-04-02 1986-02-18 The United States Of America As Represented By The Secretary Of The Navy CIG Distortion correction with delay lines
JPH0380780A (en) * 1989-08-24 1991-04-05 Victor Co Of Japan Ltd Trapezoidal distortion correction circuit for image projector using liquid crystal light valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395662A (en) * 1981-05-27 1983-07-26 General Electric Company Correction circuits for projection television
US4571631A (en) * 1984-04-02 1986-02-18 The United States Of America As Represented By The Secretary Of The Navy CIG Distortion correction with delay lines
JPH0380780A (en) * 1989-08-24 1991-04-05 Victor Co Of Japan Ltd Trapezoidal distortion correction circuit for image projector using liquid crystal light valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091446A (en) 1992-01-21 2000-07-18 Walker; Bradley William Consecutive frame scanning of cinematographic film

Also Published As

Publication number Publication date
GB9204130D0 (en) 1992-04-08
GB2265064A (en) 1993-09-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970226