Efficient rounding circuits and methods in configurable integrated circuit devices

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United States of America Patent

PATENT NO 7948267
SERIAL NO

12702445

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A specialized processing block for a configurable integrated circuit device includes circuitry for performing multiplications and sums thereof, as well as circuitry for rounding the result. The rounding circuitry reuses an adder that is also available, in other configurations, for accumulation of the result. Rounding is performed by adding a constant to the result and then truncating at the bit position at which rounding is desired. The constant may be entered by a user, or may be derived based on a desired rounding method from mask data entered by the user to identify the rounding bit position.

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Patent Owner(s)

  • ALTERA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Langhammer, Martin Alderbury, GB 301 3406
Mauer, Volker Lacey Green, GB 39 265

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