US3757040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle display for digitally generated video information
Assignee: Singer Co
•
Filing: 1971-09-20
•
Granted: 1973-09-04
•
Expires: 1991-09-20
Abstract
Abstract A method and apparatus for displaying information stored for display on a planar surface onto a wide angle spherical display by painting on the display a spherical raster of great circle formed by the intersections of planes passing through the center of the sphere and raster lines on a nominal display plane and retreiving the stored information non-linearly so that it will properly map on the great circles is shown.
Inventors
- 👤 W Bennett
- 👤 A Collier
- 👤 A Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:44
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/16; G09G1/165; G06; G06F; G06F3/00; G06F3/14; G06F3/153; H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; G09G2320/00; G09G2320/06; G09G2320/0693
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
In a display system comprising a digital image generator and a spherical television display, apparatus to permit the images stored in said generator to be displayed on said display in the proper perspective comprising: a. means to paint on said display a raster comprising lines which are great circle segments each line corresponding to a line of information stored in the image generator; b. means to obtain a scan signal which is in one to one correspondence of the angular position of the spot painting said raster; c. function generating means having said scan signal as an input and providing an output which corresponds to the corresponding position of said spot on a straight line; and d. means to obtain from said output a signal indicating the instantaneous scan rate on a straight line and to convert said signal to a variable frequency pulse train which may be used to clock thE stored information out of said image generator.
Claim 2
Dependent Claim
159 words
In a display system comprising a digital image generator and a spherical television display, apparatus to permit the images stored in said generator to be displayed on said display in the proper perspective comprising: a. means to paint on said display a raster comprising lines which are great circle segments each line corresponding to a line of information stored in the image generator; b. means to obtain a scan signal which is in one to one correspondence of the angular position of the spot painting said raster; c. function generating means having said scan signal as an input and providing an output which corresponds to the corresponding position of said spot on a straight line; and d. means to obtain from said output a signal indicating the instantaneous scan rate on a straight line and to convert said signal to a variable frequency pulse train which may be used to clock thE stored information out of said image generator.
Claim 3
Dependent Claim
48 words
The invention according to claim 1 wherein said display comprises a plurality of display units joined together and further including means to paint a continuous raster on said plurality of displays and to switch the video signal from said image generator to the proper ones of said displays.
Claim 4
Dependent Claim
19 words
The invention according to claim 1 wherein the spot painting said raster moves through equal angles in equal time.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |