Global Patent Index - EP 0695451 B1

EP 0695451 B1 2000-05-03 - PROCESS FOR SCROLLING A PLURALITY OF RASTER LINES IN A WINDOW OF A PERSONAL COMPUTER DISPLAY SCREEN RUN IN GRAPHIC MODE

Title (en)

PROCESS FOR SCROLLING A PLURALITY OF RASTER LINES IN A WINDOW OF A PERSONAL COMPUTER DISPLAY SCREEN RUN IN GRAPHIC MODE

Title (de)

VERFAHREN ZUM SCROLLEN VON MEHREREN RASTERZEILEN IN EINEM FENSTER EINES IM GRAFIKMODUS BETRIEBENEN BILDSCHIRMS EINES PERSONALCOMPUTERS

Title (fr)

PROCEDE POUR FAIRE DEFILER PLUSIEURS LIGNES DE TRAMES DANS UNE FENETRE D'UN ECRAN D'UN MICRO-ORDINATEUR, FONCTIONNANT EN MODE GRAPHIQUE

Publication

EP 0695451 B1 (DE)

Application

EP 95910402 A

Priority

  • DE 9500205 W
  • DE 4405330 A

Abstract (en)

[origin: US5801675A] PCT No. PCT/DE95/00205 Sec. 371 Date Jan. 18, 1996 Sec. 102(e) Date Jan. 18, 1996 PCT Filed Feb. 17, 1995 PCT Pub. No. WO95/22814 PCT Pub. Date Aug. 24, 1995The invention relates to a procedure for scrolling some raster scan lines in a window of a screen operated in the graphic-mode of a personal computer. The computer has a processor and a program memory allocated to it as well as a video card connected to the processor via an external bus. The video card has a video memory (RAM), whose memory contents can be presented on the screen. One first line of the raster scan lines to be scrolled, is moved into a raster scan line within the window and is marked with a source-pointer. The raster scan line within a window, in which this line is to be moved into, is marked with a destination pointer. Afterwards, a scroll is performed and repeated until all lines to be scrolled are in raster scan lines of the window. At the same time with the first line, the subsequent third line is also at least scrolled in raster scan lines of the screen window. Afterwards, the second line and the fourth line of some raster scan lines to be scrolled are scrolled from lines in raster scan lines of the screen window and so on until all lines to be scrolled are scrolled in raster scan lines of the window.

IPC 1-7 (main, further and additional classification)

G09G 5/14; G09G 1/16

IPC 8 full level (invention and additional information)

G06F 3/048 (2006.01); G06F 3/14 (2006.01); G09G 5/14 (2006.01); G09G 5/34 (2006.01)

CPC (invention and additional information)

G09G 5/14 (2013.01); G09G 5/346 (2013.01)

Citation (examination)

EP 0071725 A2 19830216 - IBM [US]

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

EPO simple patent family

US 5801675 A 19980901; AT 192599 T 20000515; CN 1123578 A 19960529; DE 4405330 A1 19950824; EP 0695451 A1 19960207; EP 0695451 B1 20000503; ES 2149349 T3 20001101; JP H09511342 A 19971111; WO 9522814 A1 19950824

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