Patent
1995-10-02
1998-01-06
Tung, Kee M.
395122, 395511, G06T 160
Patent
active
057064792
ABSTRACT:
In a computer graphic system a method and apparatus for dynamically maintaining an overflow flag in a multi-layer buffer. A circuit for maintaining an overflow signal is provided. This circuit is provided new pixel data from the computer system and old pixel data from a memory and in response dynamically asserts or de-asserts the overflow signal. An increment and decrement generator, which is coupled to the new overflow generator, is provided a new overflow signal and an old overflow signal and in response generates an increment signal and a decrement signal. An overflow tracking circuit, which is coupled to the increment and decrement generator, is provided. The overflow tracking circuit uses the increment and decrement signals to maintain an overflow count value.
REFERENCES:
patent: 4924414 (1990-05-01), Ueda
patent: 5218670 (1993-06-01), Sodek, Jr. et al.
patent: 5345541 (1994-09-01), Kelley et al.
patent: 5583974 (1996-12-01), Winner et al.
Patmesil & Hoffert, Computer Graphics "The Pixel Machine: A Parallel Image Computer", 1989, pp. 69-78.
Foley, Computer Graphics "Principles and Practice" Second Edition, pp. 92-99.
Mammen, IEEE "Transparency and Antialiasing Algorithms Implemented with the Virtual Pixel Maps Technique", 1989, pp. 43-55.
Kelley Michael
Winner Stephanie
Apple Computer Inc.
Tung Kee M.
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