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Title: US5369450: Electronic and computational correction of chromatic aberration associated with an optical system used to view a color video display
[ Derwent Title ]


Country: US United States of America

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17 pages

 
Inventor: Haseltine, Eric C.; Manhattan Beach, CA
Redmann, William G.; Simi Valley, CA

Assignee: The Walt Disney Company, Anaheim, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
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Published / Filed: 1994-11-29 / 1993-06-01

Application Number: US1993000069892

IPC Code: Advanced: H04N 3/233; H04N 9/28;
Core: H04N 3/22; more...
IPC-7: H04N 3/233;

ECLA Code: H04N3/233C; H04N9/28;

U.S. Class: Current: 348/745; 315/368.12; 348/580; 348/746; 348/806; 348/807; 348/E03.045; 348/E09.021;
Original: 348/745; 348/580; 348/806; 348/807; 348/746; 315/368.12;

Field of Search: 315/368.12,368.13 358/064,58 348/832,744-747,580,806,807 <H04N 928

Priority Number:
1993-06-01  US1993000069892

Abstract: Methods and systems are presented in which at least one geometric distortion function is separately determined for application to a particular primary color component of a color video display to cause a geometric distortion that compensates for lateral chromatic aberration in an optical system used to view the display.

Attorney, Agent or Firm: Rowland, Mark D. ;

Primary / Asst. Examiners: Powell, Mark R.;

Maintenance Status: CC Certificate of Correction issued

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 25 claims
We claim:     1. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
  • providing color component image display control signals for a plurality of color components of an image to be displayed by the color video display device on the display surface;
  • defining a distortion function for a particular color component of the color video display device based on the chromatically variant optical aberration of the optical system; and
  • differentially transforming the color component image display control signals by applying the distortion function to a color component image display control signal for the corresponding particular color component to introduce chromatically variant distortion in the image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image.


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Forward References: Show 35 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (35)   |   Backward references (20)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 3pp US3233513* 1966-02 Wagner et al.    
Get PDF - 9pp US3633989  1972-01 Benton  Polaroid Corporation METHOD FOR MAKING REDUCED BANDWIDTH HOLOGRAMS
Get PDF - 9pp US3657981  1972-04 Benton  Polaroid Corporation DIRECT ORTHOSCOPIC STEREO PANORAMAGRAM CAMERA
Get PDF - 10pp US3723805  1973-03 Scarpino et al.  The United States of America as represented by the Secretary of the Navy DISTORTION CORRECTION SYSTEM
Get PDF - 9pp US3943279  1976-03 Austefjord  Aeronutronic Ford Corporation Digital convergence of multiple image projectors
Get PDF - 13pp US4406532  1983-09 Howlett   Wide angle color photography method and system
Get PDF - 9pp US4549208  1985-10 Kamejima et al.  Hitachi, Ltd. Picture processing apparatus
Get PDF - 17pp US4672275  1987-06 Ando  Sony Corporation Digital process and apparatus for convergence correction having adjustment points and correction portions determined by the adjustment point selected
Get PDF - 25pp US4714428  1987-12 Bunker et al.  General Electric Company Method of comprehensive distortion correction for a computer image generation system
Get PDF - 26pp US4816908  1989-03 Colineau et al.  Societe Electronique de la Region Pays de Loire Color video projector with a convergence adjustment device which imposes an automatic sequence of multi-zone convergence adjustment steps
Get PDF - 14pp US4834476  1989-05 Benton  Massachusetts Institute of Technology Real image holographic stereograms
Get PDF - 13pp US4835602  1989-05 Duwaer  North American Philips Corporation Color projection television system with apparatus for correcting misconvergence and misgeometry which calculates coefficients of equations representing deflection correction waveforms
Get PDF - 19pp US4871948  1989-10 Nelson  Honeywell Inc. Memory mapped deflection correction system
Get PDF - 14pp US4935674  1990-06 Rodriguez-Cavazos  RCA Licensing Corporation Digitally controlled convergence system
Get PDF - 24pp US4977446  1990-12 Shiomi et al.  Hitachi, Ltd. Digital convergence correcting apparatus
Get PDF - 10pp US4986619  1991-01 Walker et al.  Massachusetts Institute of Technology Holographic color control systems
Get PDF - 15pp US4999703  1991-03 Henderson  Hughes Aircraft Company Automatic image correction method and apparatus for projectors utilizing cathode ray tubes
Get PDF - 17pp US5041764  1991-08 Midland et al.  Zenith Electronics Corporation Horizontal misconvergence correction system for color video display
Get PDF - 6pp US5181013  1993-01 Bagshaw et al.  GEC-Marconi Limited Display apparatus
Get PDF - 27pp US5200815  1993-04 Tsujihara et al.  Matsushita Electric Industrial Co., Ltd. Convergence correction apparatus for a video projection system
  * some details unavailable
       
Foreign References: None

Other Abstract Info: DERABS G95-014320 DERG95-014320

Other References:
  • "Advanced technology: flat cold-cathode CRTs," Ivor Brodie, Information Display Jan. 1989, pp. 17-19, 1989.
  • "A Variable Acuity Display For Simulator Applications," Ralph W. Fisher, McDonnell Aircraft Company, 1982.
  • "Geometrical and chromatic aberrations of an off-axis holographic mirror," J. Phys. D: Appl. Phys. 21, pp. 96-98, 1988.
  • Modeern Optical Engineering: The Design of Optical Systems, Warren J. Smith, McGraw-Hill Book Company, pp. 49-71, 266-289 and 326-356, 1966.


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