Boots – shoes – and leggings
Patent
1992-12-18
1995-04-18
Bowler, Alyssa H.
Boots, shoes, and leggings
3642581, 364DIG1, G06F 750
Patent
active
054086701
ABSTRACT:
Arithmetic operations are performed on composite operands that include plural component data items. The operations obtain valid results even though the operations would ordinarily produce inter-component signals, such as carry or borrow signals or a shifted bit, causing invalid results. For example, the component data items can be pixel values or other data relating to pixels in an image. Instructions on a storage medium can be accessed and executed by a processor to obtain valid results despite intercomponent signals. Or special circuitry, such as gating circuitry or a mask register, can be used to prevent inter-component signals. Components in composite operands can be separated by buffer bits that are cleared or set to ensure valid results. Values of components can be biased before an operation to obtain valid results.
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Bowler Alyssa H.
Harrity John
Xerox Corporation
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