CA2238693A1 - Method and apparatus for displaying a virtual environment on a video display - Google Patents

Method and apparatus for displaying a virtual environment on a video display

Info

Publication number
CA2238693A1
CA2238693A1 CA002238693A CA2238693A CA2238693A1 CA 2238693 A1 CA2238693 A1 CA 2238693A1 CA 002238693 A CA002238693 A CA 002238693A CA 2238693 A CA2238693 A CA 2238693A CA 2238693 A1 CA2238693 A1 CA 2238693A1
Authority
CA
Canada
Prior art keywords
display
image
video
visual orientation
video display
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
CA002238693A
Other languages
French (fr)
Other versions
CA2238693C (en
Inventor
Brian L. Welch
Andrew Fernie
Ken Unger
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.)
CAE Inc
Original Assignee
Cae Electronics Ltd.
Brian L. Welch
Andrew Fernie
Ken Unger
Cae 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
Priority claimed from US08/563,195 external-priority patent/US5933125A/en
Priority claimed from US08/593,842 external-priority patent/US5764202A/en
Application filed by Cae Electronics Ltd., Brian L. Welch, Andrew Fernie, Ken Unger, Cae Inc. filed Critical Cae Electronics Ltd.
Publication of CA2238693A1 publication Critical patent/CA2238693A1/en
Application granted granted Critical
Publication of CA2238693C publication Critical patent/CA2238693C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
    • G09B9/30—Simulation of view from aircraft
    • G09B9/307—Simulation of view from aircraft by helmet-mounted projector or display
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0187—Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B2027/0192—Supplementary details
    • G02B2027/0198—System for aligning or maintaining alignment of an image in a predetermined direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals

Abstract

The apparatus for displaying a virtual environ-ment on a video display such as a head mounted dis-play (23), has a position processor (11) for generating a visual orientation signal indicating a visual orientation of the video display with respect to the virtual envi-ronment, and an image generator (20) for generating a series of component images of the virtual environment for the visual orientation. The image generator (20) re-ceives the visual orientation signals. Any change in the visual orientation signal from a time when orientation signal was used by the image generator (20) to generate each component image and a time of display of each component image on the video display (16) is detected to produce an offset shift signal. An image shifting de-vice shifts the image on the display (16) in response to the offset shift signal, so as to improve the display of the virtual environment. Field sequential color video and temporal grey scale video can be improved using the apparatus, in addition to other video systems with a transport delay and active variable motion which is difficult to predict.
CA002238693A 1995-11-27 1996-11-27 Method and apparatus for displaying a virtual environment on a video display Expired - Lifetime CA2238693C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/563,195 US5933125A (en) 1995-11-27 1995-11-27 Method and apparatus for reducing instability in the display of a virtual environment
US08/563,195 1995-11-27
US08/593,842 US5764202A (en) 1995-06-26 1996-01-30 Suppressing image breakup in helmut mounted displays which use temporally separated bit planes to achieve grey scale
US08/593,842 1996-01-30
PCT/CA1996/000789 WO1997020244A1 (en) 1995-11-27 1996-11-27 Method and apparatus for displaying a virtual environment on a video display

Publications (2)

Publication Number Publication Date
CA2238693A1 true CA2238693A1 (en) 1997-06-05
CA2238693C CA2238693C (en) 2009-02-24

Family

ID=27073199

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002238693A Expired - Lifetime CA2238693C (en) 1995-11-27 1996-11-27 Method and apparatus for displaying a virtual environment on a video display

Country Status (3)

Country Link
AU (1) AU7616496A (en)
CA (1) CA2238693C (en)
WO (1) WO1997020244A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1018198C2 (en) * 2001-06-01 2002-12-03 Tno Head mounted display device.
GB2381725B (en) * 2001-11-05 2004-01-14 H2Eye Graphical user interface for a remote operated vehicle
US8015507B2 (en) 2001-11-05 2011-09-06 H2Eye (International) Limited Graphical user interface for a remote operated vehicle
AU2003901528A0 (en) 2003-03-31 2003-05-01 Seeing Machines Pty Ltd Eye tracking system and method
US20140176591A1 (en) * 2012-12-26 2014-06-26 Georg Klein Low-latency fusing of color image data
US9063330B2 (en) * 2013-05-30 2015-06-23 Oculus Vr, Llc Perception based predictive tracking for head mounted displays
EP3089154B1 (en) * 2013-12-25 2020-04-08 Sony Corporation Image processing device and image display system for pose prediction-based display
CA2979560C (en) 2015-03-05 2023-11-07 Magic Leap, Inc. Systems and methods for augmented reality
US10838207B2 (en) 2015-03-05 2020-11-17 Magic Leap, Inc. Systems and methods for augmented reality
US10180734B2 (en) 2015-03-05 2019-01-15 Magic Leap, Inc. Systems and methods for augmented reality
US9874932B2 (en) 2015-04-09 2018-01-23 Microsoft Technology Licensing, Llc Avoidance of color breakup in late-stage re-projection
GB201516121D0 (en) 2015-09-11 2015-10-28 Bae Systems Plc Helmet tracker buffering compensation
AU2016365422A1 (en) 2015-12-04 2018-06-28 Magic Leap, Inc. Relocalization systems and methods
KR102626821B1 (en) 2016-08-02 2024-01-18 매직 립, 인코포레이티드 Fixed-distance virtual and augmented reality systems and methods
WO2018086941A1 (en) 2016-11-08 2018-05-17 Arcelik Anonim Sirketi System and method for providing virtual reality environments on a curved display
US10812936B2 (en) 2017-01-23 2020-10-20 Magic Leap, Inc. Localization determination for mixed reality systems
EP3596702A4 (en) 2017-03-17 2020-07-22 Magic Leap, Inc. Mixed reality system with multi-source virtual content compositing and method of generating virtual content using same
JP7055815B2 (en) 2017-03-17 2022-04-18 マジック リープ， インコーポレイテッド A mixed reality system that involves warping virtual content and how to use it to generate virtual content
KR20230149347A (en) 2017-03-17 2023-10-26 매직 립, 인코포레이티드 Mixed reality system with color virtual content warping and method of generating virtual content using same
EP3827584A4 (en) 2018-07-23 2021-09-08 Magic Leap, Inc. Intra-field sub code timing in field sequential displays
US11379948B2 (en) 2018-07-23 2022-07-05 Magic Leap, Inc. Mixed reality system with virtual content warping and method of generating virtual content using same
IL260960B (en) 2018-08-02 2020-02-27 Rosolio Beery In-flight training simulation displaying a virtual environment
US11790860B2 (en) * 2021-09-03 2023-10-17 Honeywell International Inc. Systems and methods for providing image motion artifact correction for a color sequential (CS) display

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2671619B2 (en) * 1991-03-06 1997-10-29 富士通株式会社 Video generation processor
JP3318680B2 (en) * 1992-04-28 2002-08-26 サン・マイクロシステムズ・インコーポレーテッド Image generation method and image generation device
US5467104A (en) * 1992-10-22 1995-11-14 Board Of Regents Of The University Of Washington Virtual retinal display
US5422653A (en) * 1993-01-07 1995-06-06 Maguire, Jr.; Francis J. Passive virtual reality
US5369450A (en) * 1993-06-01 1994-11-29 The Walt Disney Company Electronic and computational correction of chromatic aberration associated with an optical system used to view a color video display
US6388638B2 (en) * 1994-10-28 2002-05-14 Canon Kabushiki Kaisha Display apparatus and its control method

Also Published As

Publication number Publication date
AU7616496A (en) 1997-06-19
WO1997020244A1 (en) 1997-06-05
CA2238693C (en) 2009-02-24

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Effective date: 20161128