Sorry for the delay: Patent #1
I don't understand the E1 (Expired) status on this one. But this one seems to be the least pertinent.
Mark N.
5184317 : Method and apparatus for generating mathematical functions
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INVENTORS: Pickett; Lester C., Mountain View, CA 94041
ASSIGNEES: none
ISSUED: Feb. 2 , 1993 FILED: Jan. 30, 1991
SERIAL NUMBER: 623238 MAINT. STATUS: E1 (Expired)
INTL. CLASS (Ed. 5): G06F 015/32; G06F 007/38;
U.S. CLASS: 364/735; 364/718; 364/748.5;
FIELD OF SEARCH: 364-735,718,748.5,746.2,723 ;
ABSTRACT: A method and apparatus for general-purpose generation of digital mathematical functions in connection with a computer processor enabling computation of such functions as exponential, logarithmic, hyperbolic and trigonometric functions, as well as numerous special-purpose engineering functions. The invention employs compact look-up tables accessed by look-up techniques and value interpolation to determine values not found in the tables. In specific embodiments, specific techniques are employed for table generation and value interpolation to attain results at desired levels of speed, precision, economy, and reliability. Applications include alternatives to conventional hardware multipliers and numerical processors. Individual embodiments may be realized either directly in hardware or in software. Multiple embodiments may be realized as software or hardware function libraries. Coupled multiple embodiments may be realized as general-purpose hardware or software mathematical processors.
EXEMPLARY CLAIM(s): Show all 35 claims
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FOREIGN APPLICATION PRIORITY DATA: none
FOREIGN REFERENCES: none
OTHER REFERENCES: none
ATTORNEY, AGENT, or FIRM: Brooks & Kushman;
PRIMARY/ASSISTANT EXAMINERS: Nguyen; Long T.;
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