 |
|
|
|
|
|
 Title: |
US5175616:
Stereoscopic video-graphic coordinate specification system
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Milgram, Paul; Toronto, Canada
Drascic, David; Downsview, Canada
Grodski, Julius J.; Toronto, Canada
|
| Assignee: |
Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Canada, Ottawa, Canada
other patents from HER MAJESTY THE QUEEN IN RIGHT OF CANADA, AS REPRESENTED BY THE MINISTER OF NATIONAL DEFENCE (683641) (approx. 444)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1992-12-29
/ 1990-08-03
|
| Application Number: |
US1990000562868
|
| IPC Code: |
Advanced:
H04N 13/00;
Core:
more...
IPC-7:
H04N 13/00;
|
| U.S. Class: |
Current:
348/047;
348/056;
348/E13.014;
348/E13.022;
348/E13.025;
348/E13.04;
348/E13.059;
348/E13.072;
348/E13.073;
Original:
358/088;
358/091;
340/709;
|
| Field of Search: |
358/088,89,91,92
360/706,709,729
364/522
|
| Priority Number: |
| 1989-08-04 |
CA1989000607669 |
|
| Abstract: |
A stereoscopic image generator for superimposing a stereographic pointer video signal onto a composite standard video signal, the genrator comprises a computer for generating the stereographic pointer video signal in response to an input signal representive of the three dimensional coordinates of a point in a three dimensional video image, a video synchronizing circuit for receiving the composite standard video signal and delivering a synchronization signal to the computer, and a video keying circuit for receiving the composite standard video signal and the stereographic pointer video signal and superimposing the stereographic pointer video signal onto the composite standard video signal to produce a single combined video signal, the single combined video signal allowing the stereographic pointer video signal and the composite standard video signal to be viewed together simultaneously on the same video screen.
|
| Attorney, Agent or Firm: |
Nixon & Vanderhye ;
|
| Primary / Asst. Examiners: |
Peng, John K.;
|
| Maintenance Status: |
E3 Expired Check current status
|
| INPADOC Legal Status: |
Show legal status actions
|
| Family: |
None
|
First Claim:
Show all 11 claims |
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A stereoscopic television system, comprising:
- alternating-field video signal generating means for producing a standard video signal having alternating odd and even raster scan field video images, said alternating-field video signal generating means including a left camera for producing a left video image and a right camera for producing a right video image, each said left and right video images being comprising of alternating odd and even raster scan field video images, means for synchronizing said left and right cameras, means for aligning said left and right cameras, and alternating field combining circuit means for producing a composite standard video signal comprised of alternating video images from said left and right cameras;
- a stereoscopic pointer image generator for generating a raster graphic output video signal of a virtual, stereographic pointer in the form of a complex three-dimensional image, said stereoscopic pointer image generator including computation means for generating said complex image in response to an input signal;
- video synchronizing circuit means for receiving said composite standard video signal and delivering a synchronization signal to said computation means;
- video keying circuit means for receiving said composite standard video signal and said graphic output video signal and superimposing said graphic output video signal onto said composite standard video signal to produce a single combined video signal, said single combined video signal allowing said graphic output video signal and said composite standard video signal to be viewed together simultaneously on the same video screen;
- a video screen for displaying said composite standard video signal with said stereographic pointer superimposed thereon;
- stereoscopic shuttering spectacles, for use by an observer, for separating odd and even raster scan field video images displayed on the video screen into left and right eye images respectively to allow the observer to perceive three dimensional images on a display screen; and
- means for enabling the observer to communicate to said image generator, with three degrees of freedom, the desired location of said stereographic pointer within the perceived three dimensional images on said screen.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 61 U.S. patent(s) that reference this one
|
