Electronic circuits for the graphical display of overlapping win

Details Electronic circuits for the graphical display of overlapping win Electronic circuits for the graphical display of overlapping win

1995-03-14

1995-10-31

Herndon, Heather R.

395157, 395161, G06F 938, G06F 3153

Patent

active

054637287

ABSTRACT:
A method and apparatus for the coding and efficient display of overlapping windows with transparency. Each pixel within a window which is not to be displayed may be coded as a "transparent" pixel. The method identifies those pixels which have been coded as transparent and displays non-transparent pixels contained in windows of lower display priority in place of the transparent pixels contained in windows of higher display priority. A pixel coded as transparent may have associated with it an integer representative of the number of successive pixels in the window which are also transparent. A pixel may be coded as transparent by assigning to it a preselected data value which is distinct from values otherwise used to indicate, e.g., the color and/or intensity for each displayed pixel. The method and apparatus may include one or more windows which contain full motion video (i.e., television) images, each of which may also contain transparent pixels. A pixel also may be coded as a "translucent" pixel, whereby a combination of the translucent pixel and a non-translucent pixel contained in a window of lower display priority is displayed. The method may be used to efficiently recognize various conditions in the displayed image, including the collision of objects and the pointing of a displayed cursor to identified "hot spots."

REFERENCES:
patent: 4197590 (1980-04-01), Sukonick
patent: 4414628 (1983-11-01), Ahuja et al.
patent: 4555775 (1985-11-01), Pike
patent: 4622545 (1986-11-01), Atkinson
patent: 4700320 (1987-10-01), Kapur
patent: 4868765 (1989-09-01), Diefendorff
patent: 4893116 (1990-01-01), Henderson et al.
patent: 4914607 (1990-04-01), Takanaski et al.
patent: 5056041 (1991-10-01), Guttag et al.
patent: 5150457 (1992-09-01), Behm et al.
patent: 5185808 (1993-02-01), Cok
patent: 5222203 (1993-06-01), Obata
Mastering Windows 3.1 (Trademark of Microsoft Corporation) pp. 367-368, 481.
Research Disclosure, Mar. 1993 (RD 347065), Feb. 20, 1993, p. 206.
R. Pike, "Graphics in Overlapping Bitmap Layers", ACM Transactions on Graphics, vol. 2, No. 2, Apr. 1983, pp. 135-160.
S. McGeady, "Next-Generation Hardware for Windowed Displays", USENIX Technical Conference Proceedings, Winter 1986, pp. 11-22.

Affiliated with

Also associated with

Rating

Electronic circuits for the graphical display of overlapping win does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic circuits for the graphical display of overlapping win, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic circuits for the graphical display of overlapping win will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1780364