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Class Information
Number: 708/505
Name: Electrical computers: arithmetic processing and calculating > Electrical digital calculating computer > Particular function performed > Arithmetical operation > Floating point > Addition or subtraction
Description: Subject matter wherein the operation performed is addition or subtraction.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8713085 Systems and methods for a signed magnitude adder in one's complement logic Apr. 29, 2014
8645449 Combined floating point adder and subtractor Feb. 4, 2014
8630371 Channel estimation using linear phase estimation Jan. 14, 2014
8620983 Leading sign digit predictor for floating point near subtractor Dec. 31, 2013
8615542 Multi-function floating point arithmetic pipeline Dec. 24, 2013
8615540 Arithmetic logic unit for use within a flight control system Dec. 24, 2013
8601047 Decimal floating-point adder with leading zero anticipation Dec. 3, 2013
8554819 System to implement floating point adder using mantissa, rounding, and normalization Oct. 8, 2013
8549054 Arithmetic processing apparatus and arithmetic processing method Oct. 1, 2013
8489663 Decimal floating-point adder with leading zero anticipation Jul. 16, 2013
8489665 Communication apparatus, method of checking received data size, multiple determining circuit, and multiple determination method Jul. 16, 2013
8484267 Weight normalization in hardware without a division operator Jul. 9, 2013
8463835 Circuit for and method of providing a floating-point adder Jun. 11, 2013
8423600 Accumulating operator and accumulating method for floating point operation Apr. 16, 2013
8402075 Mechanism for fast detection of overshift in a floating point unit of a processing device Mar. 19, 2013
8380769 Filter operation unit and motion-compensating device Feb. 19, 2013
8332453 Shifter with all-one and all-zero detection using a portion of partially shifted vector and shift amount in parallel to generated shifted result Dec. 11, 2012
8250126 Efficient leading zero anticipator Aug. 21, 2012
8239438 Method and apparatus for implementing a multiple operand vector floating point summation to scalar function Aug. 7, 2012
8219604 System and method for providing a double adder for decimal floating point operations Jul. 10, 2012
8214417 Subnormal number handling in floating point adder without detection of subnormal numbers before exponent subtraction Jul. 3, 2012
8214416 Floating-point addition acceleration Jul. 3, 2012
8185570 Three-term input floating-point adder-subtractor May. 22, 2012
8170695 Appliance incorporating load selectivity without employment of smart meters May. 1, 2012
8166085 Reducing the latency of sum-addressed shifters Apr. 24, 2012
8161090 Floating-point fused add-subtract unit Apr. 17, 2012
8161091 Method for performing decimal floating point addition Apr. 17, 2012
8131795 High speed adder design for a multiply-add based floating point unit Mar. 6, 2012
8069200 Apparatus and method for implementing floating point additive and shift operations Nov. 29, 2011
8060549 Method and apparatus for accumulating floating point values Nov. 15, 2011
8046400 Apparatus and method for optimizing the performance of x87 floating point addition instructions in a microprocessor Oct. 25, 2011
7991817 Method and a circuit using an associative calculator for calculating a sequence of non-associative operations Aug. 2, 2011
7982496 Bus-based logic blocks with optional constant input Jul. 19, 2011
7872497 Flexible carry scheme for field programmable gate arrays Jan. 18, 2011
7873688 Processing method and computer system for summation of floating point data Jan. 18, 2011
7814138 Method and apparatus for decimal number addition using hardware for binary number operations Oct. 12, 2010
7746100 Flexible adder circuits with fast carry chain circuitry Jun. 29, 2010
7720898 Apparatus and method for adjusting exponents of floating point numbers May. 18, 2010
7716264 Method and apparatus for performing alignment shifting in a floating-point unit May. 11, 2010
7707236 Methods and apparatus for an efficient floating point ALU Apr. 27, 2010
7668892 Data processing apparatus and method for normalizing a data value Feb. 23, 2010
7663400 Flexible carry scheme for field programmable gate arrays Feb. 16, 2010
7617268 Method and apparatus supporting non-additive calculations in graphics accelerators and digital signal processors Nov. 10, 2009
7592835 Co-processor having configurable logic blocks Sep. 22, 2009
7574584 Splitting execution of a floating-point add instruction between an integer pipeline for performing mantissa addition and a hardware state machine Aug. 11, 2009
7552165 Method and system to implement an improved floating point adder with integrated adding and rounding Jun. 23, 2009
7546328 Decimal floating-point adder Jun. 9, 2009
7519645 System and method for performing decimal floating point addition Apr. 14, 2009
7490119 High speed adder design for a multiply-add based floating point unit Feb. 10, 2009
7475104 System and method for providing a double adder for decimal floating point operations Jan. 6, 2009

1 2 3 4 5

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