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 Title: |
US5421589:
Method and apparatus for displaying an alpha channel virtual image
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Monroe, Marshall M.; Glendale, CA
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| Assignee: |
The Walt Disney Company, Burbank, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
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| Published / Filed: |
1995-06-06
/ 1993-09-07
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| Application Number: |
US1993000118385
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| IPC Code: |
Advanced:
A63F 13/08;
H04N 13/00;
IPC-7:
A63F 9/22;
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| ECLA Code: |
A63F13/08; H04N13/04H; T04N13/02M; T04N13/04H; T04N13/04P; T04N13/04V5;
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| U.S. Class: |
Current:
345/009;
348/E13.022;
348/E13.042;
348/E13.057;
348/E13.058;
353/037;
359/629;
463/034;
Original:
273/437;
345/009;
353/037;
359/629;
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| Field of Search: |
273/433,434,437,DIG. 28,310,312,313,316,85 G
345/001,4,7,8,9,37,38,87
353/028,30,37
359/471,472,477,629,630
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| Priority Number: |
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| Abstract: |
The present invention is directed to a method and apparatus for displaying a virtual image and for providing control over the "alpha channel" or transparency of the virtual image. The present invention uses a beam splitter to provide a virtual image to a viewer. Behind the beam splitter is a liquid crystal region for controlling the transparency of the virtual image. Behind the liquid crystal region is a background image. Control of the liquid crystal region is coordinated with control of the virtual image so as to make transparency and opacity of the liquid crystal region follow the portions of the virtual image that are intended to be transparent and opaque, respectively.
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| Attorney, Agent or Firm: |
Hecker & Harriman ;
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| Primary / Asst. Examiners: |
Harrison, Jessica J.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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| U.S. References: |
Go to Result Set:
All U.S. references
| Forward references (35)
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Backward references (15)
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Citation Link
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