DE69729421D1 - Bildgenerator zur Videoanzeige - Google Patents

Bildgenerator zur Videoanzeige

Info

Publication number
DE69729421D1
DE69729421D1 DE69729421T DE69729421T DE69729421D1 DE 69729421 D1 DE69729421 D1 DE 69729421D1 DE 69729421 T DE69729421 T DE 69729421T DE 69729421 T DE69729421 T DE 69729421T DE 69729421 D1 DE69729421 D1 DE 69729421D1
Authority
DE
Germany
Prior art keywords
video display
image generator
generator
image
video
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 - Lifetime
Application number
DE69729421T
Other languages
English (en)
Other versions
DE69729421T2 (de
Inventor
Paul Delucia
Arthur G Avedisian
Jon R Salvati
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.)
Carl Zeiss Meditec Inc
Original Assignee
Welch Allyn 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 Welch Allyn Inc filed Critical Welch Allyn Inc
Publication of DE69729421D1 publication Critical patent/DE69729421D1/de
Application granted granted Critical
Publication of DE69729421T2 publication Critical patent/DE69729421T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/022—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing contrast sensitivity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/06—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision
    • A61B3/063—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision for testing light sensitivity, i.e. adaptation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
DE69729421T 1996-10-28 1997-10-27 Bildgenerator zur Videoanzeige Expired - Lifetime DE69729421T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US736826 1996-10-28
US08/736,826 US6025829A (en) 1996-10-28 1996-10-28 Image generator for video display

Publications (2)

Publication Number Publication Date
DE69729421D1 true DE69729421D1 (de) 2004-07-15
DE69729421T2 DE69729421T2 (de) 2005-06-16

Family

ID=24961444

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69729421T Expired - Lifetime DE69729421T2 (de) 1996-10-28 1997-10-27 Bildgenerator zur Videoanzeige

Country Status (3)

Country Link
US (1) US6025829A (de)
EP (1) EP0838193B1 (de)
DE (1) DE69729421T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6934772B2 (en) 1998-09-30 2005-08-23 Hewlett-Packard Development Company, L.P. Lowering display power consumption by dithering brightness
CA2438109A1 (en) * 2001-02-08 2002-08-15 Topcon Corporation Contrast chart apparatus, contrast sensitivity measuring apparatus, and contrast sensitivity measuring method
US7760231B2 (en) * 2005-03-09 2010-07-20 Pixar Animated display calibration method and apparatus
US8264547B1 (en) 2007-11-30 2012-09-11 Pixar Display calibration method and apparatus for exposing errors in gamma mapping and image scaling
US7942525B2 (en) * 2009-07-09 2011-05-17 Nike, Inc. Contrast sensitivity testing and/or training using circular contrast zones

Family Cites Families (46)

* Cited by examiner, † Cited by third party
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NL153693C (de) * 1965-10-19
US3571807A (en) * 1968-11-13 1971-03-23 Bell Telephone Labor Inc Redundancy reduction system with data editing
US3659285A (en) * 1969-08-21 1972-04-25 Sanders Associates Inc Television gaming apparatus and method
US3750133A (en) * 1971-07-30 1973-07-31 Rca Corp Home television receiver modified to operate as video terminal
US3883235A (en) * 1971-09-17 1975-05-13 John R Lynn Automatic visual field examination including fixation monitoring compensation
JPS5134257B2 (de) * 1971-12-14 1976-09-25
US3821468A (en) * 1972-03-22 1974-06-28 Sarkes Tarzian Digital special effects generator
US3793483A (en) * 1972-11-24 1974-02-19 N Bushnell Video image positioning control system for amusement device
US3874669A (en) * 1973-03-26 1975-04-01 Rosalba Ariano Electronic device for the simulation of an animated game, in particular the game of football
JPS547416B2 (de) * 1973-09-25 1979-04-06
US4026555A (en) * 1975-03-12 1977-05-31 Alpex Computer Corporation Television display control apparatus
US4155352A (en) * 1977-06-09 1979-05-22 Temple University Nystagmus processor for EEG machines
JPS5941222B2 (ja) * 1978-08-30 1984-10-05 株式会社日立製作所 図形表示装置
US4251755A (en) * 1979-07-12 1981-02-17 Raytheon Company CRT Digital brightness control
US4526452A (en) * 1982-06-08 1985-07-02 Interzeag Ag Method and apparatus for measuring contrast sensitivity
US4493539A (en) * 1982-06-30 1985-01-15 The United States Of America As Represented By The Secretary Of The Air Force Method and apparatus for objective determination of visual contrast sensitivity functions
US4541115A (en) * 1983-02-08 1985-09-10 Pattern Processing Technologies, Inc. Pattern processing system
US4623923A (en) * 1983-03-14 1986-11-18 Honeywell Inc. Real-time video image enhancement system
JPS6039685A (ja) * 1983-08-12 1985-03-01 セイコーエプソン株式会社 表示制御装置
US4642676A (en) * 1984-09-10 1987-02-10 Color Systems Technology, Inc. Priority masking techniques for video special effects
US4676611A (en) * 1984-11-14 1987-06-30 New York University Method and apparatus for visual-evoked responses
US4704605A (en) * 1984-12-17 1987-11-03 Edelson Steven D Method and apparatus for providing anti-aliased edges in pixel-mapped computer graphics
JPS61159686A (ja) * 1985-01-07 1986-07-19 株式会社日立製作所 画像表示装置
US4607923A (en) * 1985-01-10 1986-08-26 Task Harry L Contrast sensitivity function measurement chart and method
US5001549A (en) * 1986-09-17 1991-03-19 Tektronix, Inc. Television signal generator
US4910681A (en) * 1987-05-15 1990-03-20 Anritsu Corporation Multi-functionality television testing signal generator using digital scheme
US5170468A (en) * 1987-08-18 1992-12-08 Hewlett-Packard Company Graphics system with shadow ram update to the color map
US4977398A (en) * 1988-01-15 1990-12-11 Chips And Technologies, Incorporated Color to monochrome conversion
US5543819A (en) * 1988-07-21 1996-08-06 Proxima Corporation High resolution display system and method of using same
US5065767A (en) * 1988-08-26 1991-11-19 The Australian National University Method for use in diagnosis of glaucoma
US5248964A (en) * 1989-04-12 1993-09-28 Compaq Computer Corporation Separate font and attribute display system
US5176147A (en) * 1990-04-29 1993-01-05 Bodis Wollner Ivan G Method and apparatus for detecting optic neuropathy
US5233517A (en) * 1990-04-30 1993-08-03 Jindra Lawrence F Early glaucoma detection by Fourier transform analysis of digitized eye fundus images
US5546553A (en) * 1990-09-24 1996-08-13 Texas Instruments Incorporated Multifunctional access devices, systems and methods
JP2898084B2 (ja) * 1990-11-14 1999-05-31 松下電器産業株式会社 画像圧縮処理装置
US5270688A (en) * 1990-12-12 1993-12-14 Apple Computer, Inc. Apparatus for generating a cursor or other overlay which contrasts with the background on a computer output display
US5600773A (en) * 1991-07-23 1997-02-04 International Business Machines Corporation Logical partitioning of gamma ramp frame buffer for overlay or animation
JPH06318060A (ja) * 1991-07-31 1994-11-15 Toshiba Corp 表示制御装置
US5337408A (en) * 1991-08-09 1994-08-09 Vadem Corporation Multi-level display controller
JPH05130648A (ja) * 1991-11-07 1993-05-25 Mitsubishi Electric Corp テストパターン信号発生装置
US5303709A (en) * 1991-12-16 1994-04-19 Dreher Andreas W Retinal eye disease diagnostic system
US5539482A (en) * 1992-02-28 1996-07-23 The Australian National University Glaucoma testing using non-linear systems identification techniques
US5360971A (en) * 1992-03-31 1994-11-01 The Research Foundation State University Of New York Apparatus and method for eye tracking interface
AU4842793A (en) * 1992-09-01 1994-03-29 President And Fellows Of Harvard College Determining pathologic conditions, in particular dyslexia
US5479606A (en) * 1993-07-21 1995-12-26 Pgm Systems, Inc. Data display apparatus for displaying patterns using samples of signal data
AUPM537994A0 (en) * 1994-04-29 1994-05-26 Australian National University, The Early detection of glaucoma

Also Published As

Publication number Publication date
DE69729421T2 (de) 2005-06-16
EP0838193B1 (de) 2004-06-09
EP0838193A1 (de) 1998-04-29
US6025829A (en) 2000-02-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CARL ZEISS MEDITEC, INC., DUBLIN, CALIF., US

8328 Change in the person/name/address of the agent

Representative=s name: HEYER, V., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 806