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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Application No. | Application Title | Issue Date |
| 20100121899 | Methods and apparatus for efficient complex long multiplication and covariance matrix implementation Efficient computation of complex long multiplication results and an efficient calculation of a covariance matrix are described. A parallel array VLIW digital signal processor is employed along with specialized complex long multiplication instructions and communication o... | 05/13/2010 |
| 20100017453 | PROGRAMMABLE SIGNAL PROCESSING CIRCUIT AND METHOD OF DEMODULATING A programmable signal processing circuit has an instruction processing circuit (23, 24. 26), which has an instruction set that comprises a demapping instruction. The instruction processing circuit (23, 24, 26) has an operand input (30a) for r... | 01/21/2010 |
| 20080071847 | Method for Transforming Data by Look-Up Table Provided is a method for transforming data using a look-up table. The method includes the steps of: (a) mapping preprocessed input binary data to a constellation diagram divided into four quadrants to output a first complex number; (b) performing addition/subtraction op... | 03/20/2008 |
| 20060224656 | Methods and apparatus for efficient complex long multiplication and covariance matrix implementation Efficient computation of complex long multiplication results and an efficient calculation of a covariance matrix are described. A parallel array VLIW digital signal processor is employed along with specialized complex long multiplication instructions and communication o... | 10/05/2006 |
| 20050071414 | Methods for performing multiplication operations on operands representing complex numbers A method for multiplying, at an execution unit of a processor, two complex numbers in which all four scalar multiplications, concomitant to multiplying two complex numbers, can be performed in parallel. A real part of a first complex number is multiplied at the executio... | 03/31/2005 |
| 20050071415 | Methods for performing multiply-accumulate operations on operands representing complex numbers A method for multiplying, at an execution unit of a processor, two complex numbers in which a real part and an imaginary part of a product of the multiplying can be stored in a same register of the processor. First data is conveyed along at least a first interconnect of... | 03/31/2005 |
