Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Patent
1998-03-05
2000-06-27
Malzahn, David H.
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
G06F 750
Patent
active
060818247
ABSTRACT:
A method and apparatus for fast unsigned integral division, utilized in compositing images, sounds or other data, is provided. Compositing utilizes a division step. The divisor is the value of two to the Nth power minus one. The division comprises the steps of making a copy of the first number, thus producing a third number. The first number is shifted to the right by N. The third number is biased, and is then added to the first number. The resultant number is shifted right by N. This process results in a division by 2.sup.N -1, with short latency instructions, instead of the long latency instructions usually used for division operations.
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Johnson Thomas M.
Julier Michael A.
Lempel Oded
Intel Corporation
Malzahn David H.
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