Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1991-08-21
1994-03-15
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
345153, G09G 128, G09G 504
Patent
active
052949184
ABSTRACT:
The present invention presents a process of moving an array of pixel data representing an image to be displayed from a source memory space to a destination memory space. The array of pixel data is arranged in words containing a plurality of individual pixel datum. The process includes transforming each pixel datum in the word fetched from the source memory space to a colorized pixel datum by individually attaching color information to each pixel datum. The transforming occurs substantially in parallel on all of the pixel data in each word. This technique permits storage of commonly used images such as alphanumeric characters of various fonts or icons in a compressed form with one bit per pixel. These images are formed in color using the color expand operation at the time of drawing into the color display memory. Otherwise these images would need to be stored in multiple bit per pixel color form for all desired colors requiring considerable memory for redundant data. This color expanded image may then be combined with the color image stored in a selected part of the display memory and the combined image stored in that selected part of the display memory. Thus monochrome images may be expanded into color images and then combined with color images already in the display in a single operation.
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Asal Michael D.
Guttag Karl M.
Novak Mark F.
Preston Thomas
Bassuk Lawrence J.
Brier Jeffery
Donaldson Richard L.
Marshall Robert D.
Texas Instruments Incorporated
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