Method and apparatus for displaying graticule window data on a c

Details Method and apparatus for displaying graticule window data on a c Method and apparatus for displaying graticule window data on a c

1997-06-18

2000-04-18

Mengistu, Amare

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345327, G09G 536

Patent

active

060521074

ABSTRACT:
A method of displaying graticule window data on a computer screen is disclosed herein. The method generally commences as graticule window data (e.g., live signal traces, graticule lines, etc.) is written into a video random-access memory, and conventional display data is written into a display buffer. In response to synchronization signals, the conventional display data is read from the display buffer, and the graticule window data is converted into video data. Also in response to synchronization signals, and further in response to reading conventional display data matching a reference color, the video data is multiplexed with the conventional display data to create a video output. The video output is then used to illuminate the pixels of a computer screen. Computer apparatus for executing the method's steps is also disclosed.

REFERENCES:
patent: 4104624 (1978-08-01), Hamada
patent: 4829293 (1989-05-01), Schlater
patent: 4940931 (1990-07-01), Katayama et al.
patent: 4992961 (1991-02-01), Petersen
patent: 5028914 (1991-07-01), Povenmire
patent: 5146592 (1992-09-01), Pfeiffer et al.
patent: 5838334 (1998-11-01), Dye

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