Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1987-08-04
1989-03-21
Caldwell, Sr., John W.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340747, 364521, G09G 116
Patent
active
048147559
ABSTRACT:
A method for identifying a bounded area of a graphic display. The method uses the division of the display screen into nine areas then the central square is the correlation window. This window can be small, two or three pel width, or large if the application is seeking to identify a larger area. The point indicated by the operator is in the center of the correlation window. An object (bounded area) which intersects this square will register a bit. It can be seen that a bounded area will intersect the correlation window if either: (a) any part of the boundary actually passes through the window, or (b) any arbitrary point within the window is inside the area.
REFERENCES:
patent: Re31200 (0583-04-01), Sukonick et al.
patent: 4412296 (1983-10-01), Taylor
patent: 4492956 (1985-01-01), Collmeyer et al.
patent: 4587520 (1986-05-01), Astle
Williams, Greg, "The Lisa Computer System", Byte, Feb. 1983, pp. 33-50.
W. M. Newman et al.: "Principles of Interactive Computer Graphics", 2nd Edition, 1981, pp. 63-68, Auckland McGraw-Hill, US, Chapter 5, pp. 65, 66; FIG. 5--5.
Computer Vision, Graphics and Image Processing, vol. 25, No. 3, Mar. 1984, pp. 383-392, New York, US: C. J. VanWyk: "Clipping to the Boundary of a Circular-Arc Polygon", p. 390, lines 8-18.
IBM Technical Disclosure Bulletin, vol. 18, No. 5, Oct. 1975, pp. 1593-1594, New York, US: P. L. Gardner: "Halving Algorithm for Correlating Pointing with a Vector", Figure; p. 1593.
Communications of the Association of Computing Machinery, vol. 26, No. 11, Nov. 1983, pp. 868-877, New York, US: You-Dong Liang et al.: "An Analysis and Algorithm for Polygon Clipping".
IBM Technical Disclosure Bulletin, vol. 26, No. 1A, Jun. 1981, pp. 235-236, New York, US: J. Simmons, et al.: "Polygon Filling in Graphics Display System".
Johnson Peter W.
Quarendon Peter
Caldwell Sr. John W.
International Business Machines - Corporation
Oberley Alvin
Poag Frederick D.
Walker Mark S.
LandOfFree
Interactive display system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interactive display system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interactive display system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-479985