METHOD FOR PRODUCING A REPRESENTATION OF A CALCULATION RESULT THAT IS LINEARLY DEPENDENT ON THE SQUARE OF A VALUE

WIPO Patent Application WO2006063797

A3

Transition to the logarithmic range does not require the entire bit range of the result that is linearly dependent on the square of the value. Rather, for a value having x bits, the result can be scaled in such a manner that a representation with less than x bits of the result is sufficient to obtain the logarithmic representation based thereon. The effect of the scaling factor on the resulting logarithmic representation can be cancelled by adding a correction value obtained by using the logarithmic function on the scaling factor to or subtracting it from the scaled logarithmic function without dynamic loss. The invention provides a method and a device for producing a representation of a calculation result that is linearly dependent on the square of a value, thereby allowing to carry out the calculation easily or with little hardware.

GAYER MARC (DE)
LUTZKY MANFRED (DE)
LOHWASSER MARKUS (DE)
DISCH SASCHA (DE)
HILPERT JOHANNES (DE)
GEYERSBERGER STEFAN (DE)
GRILL BERNHARD (DE)

PCT/EP2005/013383

September 21, 2006

December 13, 2005

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TEN FORSCHUNG EV FRAUNHOFER (DE)
GAYER MARC (DE)
LUTZKY MANFRED (DE)
LOHWASSER MARKUS (DE)
DISCH SASCHA (DE)
HILPERT JOHANNES (DE)
GEYERSBERGER STEFAN (DE)
GRILL BERNHARD (DE)

G06F7/544; G10L19/02

US6754618B1	2004-06-22
US5570454A	1996-10-29
US6341300B1	2002-01-22

PATENT ABSTRACTS OF JAPAN vol. 011, no. 012 (P - 535) 13 January 1987 (1987-01-13)

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