Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-06-28
1998-06-16
Brier, Jeffrey
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345153, G09G 502
Patent
active
057678332
ABSTRACT:
A method and system for providing external bit map support to device drivers coupled to a data processing system are disclosed. The data processing system includes a central processing unit, memory, user output device, and a user input device. The method and system also provide outputting of an image under a graphical user interface on the display device. In implementing the improved external bit map support, the system and method generate an image through the graphical user interface in device independent bits format and then determine whether the image is to be supported in an external bit map format. If the image is to be supported in an external bit map form, the system determines the level of required resolution for supporting that image and then converts that image to the external bit map format at that desired level of resolution. The desired level of resolution is selectable from either 24 bits per PEL (bpp), 8 bpp or 4 bpp. Further, if the image is not to be supported in the external bit map format, the system then converts the image to a standard bit map support format. Additionally, the system then determines whether the image is targeted for multiple hardware formats or a single hardware format and then provides a conversion from device independent bits to device dependent bits formats in the case of the multiple hardware format targeting, or performing image conversion appropriate for the single device in the case of the single device targeting. Finally, the system forwards the converted image to either the multiple hardware devices or the single hardware device according to the prior determination.
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Cooper Michael R.
Ravisankar R.
Vanderwiele Mark W.
Brier Jeffrey
Dillion Andrew J.
International Business Machines - Corporation
Walker Mark S.
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