Matches 1 - 50 out of 129 1 2 3 >
Match Document Document Title
7617268 Method and apparatus supporting non-additive calculations in graphics accelerators and digital signal processors  
A method and apparatus receiving number and using instruction to create resulting number approximating one of square root, reciprocal, or reciprocal square root of number. The resulting number as a...
7617266 Nonlinear conversion system using precision mapping and the method thereof  
A nonlinear conversion system using precision mapping and the method thereof are described. The system includes a source value converter, a mapping table unit, a recovering parameter computing...
7599980 Efficient hardware square-root operation  
One embodiment of the present invention provides a system that uses the Newton-Raphson technique to compute a square-root. During operation, the system receives a radicand b. Next, the system...
7574470 Multimedia data processing method  
The present invention discloses a multimedia data processing method that uses a multiplication operation unit, an exclusive-or operation unit, a bit right shift operation unit, a bit left shift...
7464129 Circuitry for carrying out a square root operation  
The invention provides circuitry for carrying out a square root operation. The circuitry utilizes iteration circuitry for carrying out a plurality of iterations. The iteration circuitry includes a...
7379957 Method and apparatus of demodulating square root for processing digital signals  
A method of demodulating a square root for processing digital signals is disclosed. The demodulation includes the following steps. First, define |l arg e| to be the larger one between the absolute...
7346642 Arithmetic processor utilizing multi-table look up to obtain reciprocal operands  
Methods for determining the square root, reciprocal square root, or reciprocal of a number performed by a processor of a computer system. The methods produce high precision estimates without using...
7313584 Increased precision in the computation of a reciprocal square root  
A method and arrangements for increased precision in the computation of a reciprocal square root is disclosed. In accordance with the present invention, it is possible to achieve fifty three (53)...
7266578 Method and hardware for computing reciprocal square root and program for the same  
A reciprocal square root for a radix of x is calculated when S[j] represents the partial result obtained after j iterations of calculation, W[j], a residual, and P[j], the product of an operand...
7200631 Method and apparatus for determining an inverse square root of a given positive-definite hermitian matrix  
Generally, a method and apparatus are provided for computing a matrix inverse square root of a given positive-definite Hermitian matrix, K. The disclosed technique for computing an inverse square...
7191204 Computing system using newton-raphson method  
A dividing circuit and square root extracting circuit using the Newton-Raphson method. The number of places of an initial value of the Newton-Raphson method is decreased, and a part of a multiplier...
7185040 Apparatus and method for calculation of divisions and square roots  
Non-restoring radix-2 division and square rooting procedures are provided. The proposed procedures utilize a quotient/root digit set {−1, 0, +1} and a quotient/root prediction table (QRT/RPT)....
7174357 Circuitry for carrying out division and/or square root operations requiring a plurality of iterations  
Circuitry for carrying out an arithmetic operation requiring a plurality of iterations, such as division or square root operations, utilizes N sets of iteration circuitry arranged one after the...
7167887 Circuitry for carrying out square root and division operations  
The invention provides circuitry for carrying out a square root operation and a division operation. The circuitry utilizes common iteration circuitry for carrying out a plurality of iterations and...
7152088 SQRT calculator capable of reducing error  
A SQRT calculator capable of calculation with a minimal error is provided. The integer calculation unit selects a largest integer from a set of integers with a square of each of the integers...
7139786 Method and apparatus for efficiently performing a square root operation  
One embodiment of the present invention provides a system that performs a carry-save square root operation that calculates an approximation of a square root, Q, of a radicand, R. The system...
7117238 Method and system for performing pipelined reciprocal and reciprocal square root operations  
A pipelined circuit configured to generate a Taylor's series approximation at least one function, preferably at least one of the reciprocal and the reciprocal square root, of an input value. The...
7099911 Givens rotations computation  
A Givens rotation computation technique is provided that makes use of polynomial approximations of an expression that contains a square root function. The polynomial approximation uses polynomial...
7031996 Calculating square root of binary numbers with fixed-point microprocessor  
A method and system is disclosed for calculating the square root of a number using a fixed-point microprocessor. The method includes employing a binary search to obtain the integer portion of the...
7016930 Apparatus and method for performing operations implemented by iterative execution of a recurrence equation  
The present invention provides an apparatus and method for performing an operation on an operand or operands in order to generate a result, in which the operation is implemented by iterative...
6999986 Calculating circuit and method for computing an N-th root and a reciprocal of a number  
A calculating circuit and a method for generating an output signal representing an output number approximating an N-th root and/or a reciprocal of an input number represented by an input signal are...
6944641 Method for determining the square root of a long-bit number using a short-bit processor  
In a method for determining the square root of a long-bit number using a short-bit processor, the long-bit number is assumed to be c×2 2K +d, where c, d<2 2k , and its solution is assumed to be...
6941334 Higher precision divide and square root approximations  
A floating point unit includes a multiplier, an approximation circuit, and a control circuit coupled to the multiplier and the approximation circuit. The approximation circuit is configured to...
6907441 Square root extractor  
A square root extractor includes only multipliers, summers, delay elements, and a scaler so that the square root of a signal may be produced without complex computations.
6856256 Method and system for detecting and digitally transmitting analog output measured quantities of a number of transducers  
Method and arrangement for sensing and digitally transmitting analog output measurement variables of a plurality of transformers The invention relates to a method and an arrangement for sensing...
6820107 Square root extraction circuit and floating-point square root extraction device  
A square root extraction circuit and a floating-point square root extraction device which simplify a circuit structure and improve an operation speed are provided. Portions for generating square...
6658445 Apparatus and method for demodulating a square root of the sum of two squares  
An apparatus and method for demodulating a square root of the sum of squares of two inputs I and Q in a digital signal processing are provided. The square root {square root over (I 2 +Q 2 )} is...
6647403 Method and digital signal processing equipment for performing digital signal processing calculation  
The invention relates to a method and digital signal processing equipment for performing a digital signal processing calculation, the method employing a look-up table in which predetermined...
6578144 Secure hash-and-sign signatures  
This invention is a method and apparatus which provide a solution to the problem of constructing efficient and secure digital signature schemes. It presents a signature scheme that can be proven to...
6553399 Method and circuit for envelope detection using a peel cone approximation  
The present invention discloses an envelope detection circuit by using a peel cone approximation concept. The envelope detection circuit comprises an absolute value comparision mechanism, a read...
6542963 Partial match partial output cache for computer arithmetic operations  
An arithmetic device having a cache for performing arithmetic operations is provided. The cache stores previously performed resultant data and operand for an arithmetic operation and upon receiving...
6542917 Storage apparatus  
An approximate value calculating unit is provided for a storage apparatus in which a seek control is performed by speed controlling a head. When a square root arithmetic operation is needed in the...
6389443 Method and apparatus for an efficient square-root computation  
The number X is a number whose square root is to be computed efficiently. A first register of a processor is set to the number X. A second register of the processor is set to a number L, wherein...
6341300 Parallel fixed point square root and reciprocal square root computation unit in a processor  
A parallel fixed-point square root and reciprocal square root computation uses the same coefficient tables as the floating point square root and reciprocal square root computation by converting the...
6256653 Multi-function bipartite look-up table  
A multi-function look-up table for determining output values for predetermined ranges of a first mathematical function and a second mathematical function. In one embodiment, the multi-function...
6223192 Bipartite look-up table with output values having minimized absolute error  
A method for generating entries for a bipartite look-up table having base and difference table portions. In one embodiment, these entries are usable to form output values for a mathematical...
6175907 Apparatus and method for fast square root calculation within a microprocessor  
An apparatus and method for calculating a square root of an operand in a microprocessor are provided. The microprocessor has a plurality of square root instructions, each of which specifies a...
6126306 Natural language processing method for converting a first natural language into a second natural language using data structures  
A method which includes performing a structure analysis on a natural sentence inputted by making use of a word dictionary DIC-WD and a configuration dictionary DIC-KT and converting letter series...
6115733 Method and apparatus for calculating reciprocals and reciprocal square roots  
A processor capable of efficiently evaluating constant powers of an operand such as the reciprocal and reciprocal square root is disclosed. The processor comprises a multiplier that is configured...
6108682 Division and/or square root calculating circuit  
An iterative division and/or iterative square root circuit 20 uses quotient digits q j +1 within the calculation that are dependent upon the input divisor D or radicand A and current partial...
6101521 Data processing method and apparatus operable on an irrational mathematical value  
A data processing apparatus (200) which improves the accuracy of resultant data. The data processing apparatus includes an input (220, 222) configured to receive input data. The input data includes...
6070181 Method and circuit for envelope detection using a peel cone approximation  
An envelope detection method by using a peel cone approximation concept and an envelope detection circuit which implements the envelope detection method are disclosed. The envelope detection...
6026423 Fractional precision integer square root processor and method for use with electronic circuit breaker systems  
A processor system apparatus and method for determining a square root of a particular value of a square of a parameter for use with an electronic circuit breaker system. The system comprises a...
5956263 Multiplication, division and square root extraction apparatus  
A multiplication, division and square root extraction apparatus which calculates the solutions to addition, division and square root extraction functions by approximation using iteration has a...
5862068 Arithmetic circuit for calculating a square-root of a sum of squares  
An arithmetic circuit with a small number of parts performs high-speed arithmetic operations for calculating a square-root of a sum of squares of two numbers. Absolute values of two inputs S in1 ...
5798955 High-speed division and square root calculation unit  
A calculation unit speedily calculates a division or square root according to an iteration algorithm with a partial remainder expressed with the sum of a sum digit and carry digit. The calculation...
5787030 Correct and efficient sticky bit calculation for exact floating point divide/square root results  
Quotient digit selection logic is modified so as to prevent a partial remainder equal to the negative divisor from occurring. An enhanced quotient digit selection function prevents the working...
5768171 Method and apparatus for improving the precision or area of a memory table used in floating-point computations  
A method and apparatus for calculating a value of a function f(x) for a given operand x. A memory, such as a Read Only Memory, is used to stored precalculated values for some bits of the function...
5737255 Method and system of rounding for quadratically converging division or square root  
A method and system which provides exactly rounded division and square root results for a designated rounding mode independently of a remainder, or equivalent calculation of the relationship...
5650953 Reciprocal number arithmetic operating method and circuit which are used in modem  
The level of the input vector signal (X+jY) is reduced to (X+jY)/√2 in the overflow preventing circuit. A power arithmetic operating circuit squares the level-down input vector signal, to obtain...
Matches 1 - 50 out of 129 1 2 3 >