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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

Patent Number Title Of Patent Date Issued
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
7469265 Methods and apparatus for performing multi-value range checks Dec. 23, 2008
7437400 Data processing apparatus and method for performing floating point addition Oct. 14, 2008
7433911 Data processing apparatus and method for performing floating point addition Oct. 7, 2008
7392274 Multi-function floating point arithmetic pipeline Jun. 24, 2008
7373369 Advanced execution of extended floating-point add operations in a narrow dataflow May. 13, 2008
7366749 Floating point adder with embedded status information Apr. 29, 2008
7356553 Data processing apparatus and method for determining a processing path to perform a data processing operation on input data elements Apr. 8, 2008
7356554 Variable fixed multipliers using memory blocks Apr. 8, 2008
7346644 Devices and methods with programmable logic and digital signal processing regions Mar. 18, 2008
7322032 Methods and apparatus for scheduling operation of a data source Jan. 22, 2008
7164290 Field programmable gate array logic unit and its cluster Jan. 16, 2007
7119576 Devices and methods with programmable logic and digital signal processing regions Oct. 10, 2006
7099910 Partitioned shifter for single instruction stream multiple data stream (SIMD) operations Aug. 29, 2006
7061268 Initializing a carry chain in a programmable logic device Jun. 13, 2006
7043516 Reduction of add-pipe logic by operand offset shift May. 9, 2006
7027598 Residue number system based pre-computation and dual-pass arithmetic modular operation approach to implement encryption protocols efficiently in electronic integrated circuits Apr. 11, 2006
7027597 Pre-computation and dual-pass modular arithmetic operation approach to implement encryption protocols efficiently in electronic integrated circuits Apr. 11, 2006
7024439 Leading Zero Anticipatory (LZA) algorithm and logic for high speed arithmetic units Apr. 4, 2006
6988115 Method and apparatus to correct leading one prediction Jan. 17, 2006
6988119 Fast single precision floating point accumulator using base 32 system Jan. 17, 2006
6963896 Method and system to implement an improved floating point adder with integrated adding and rounding Nov. 8, 2005
6943579 Variable fixed multipliers using memory blocks Sep. 13, 2005
6941335 Random carry-in for floating-point operations Sep. 6, 2005
6895424 Method and circuit for alignment of floating point significants in a SIMD array MPP May. 17, 2005
6889241 Floating point adder May. 3, 2005
6857061 Method and apparatus for obtaining a scalar value directly from a vector register Feb. 15, 2005
6836147 Function block Dec. 28, 2004
6785701 Apparatus and method of performing addition and rounding operation in parallel for floating-point arithmetic logical unit Aug. 31, 2004
6771094 Devices and methods with programmable logic and digital signal processing regions Aug. 3, 2004
6757812 Leading bit prediction with in-parallel correction Jun. 29, 2004
6754688 Method and apparatus to calculate the difference of two numbers Jun. 22, 2004
6754542 Control arithmetic apparatus and method Jun. 22, 2004
6731138 Circuits and methods for selectively latching the output of an adder May. 4, 2004
6721773 Single precision array processor Apr. 13, 2004
6668268 Method and apparatus for compiling dependent subtraction operations on arithmetic intervals Dec. 23, 2003
6631392 Method and apparatus for predicting floating-point exceptions Oct. 7, 2003
6581087 Floating point adder capable of rapid clip-code generation Jun. 17, 2003
6578060 Floating-point calculation apparatus Jun. 10, 2003
6571267 Floating point addition/subtraction execution unit May. 27, 2003
6557097 Linear vector computation Apr. 29, 2003
6538470 Devices and methods with programmable logic and digital signal processing regions Mar. 25, 2003
6529924 Method and apparatus for generating shift amount signals for an alignment shifter Mar. 4, 2003

1 2 3 4


 
 
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