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| Number | Title | Issue Date |
| 8126950 | Method for performing a domain transformation of a digital signal from the time domain into the frequency domain and vice versa A method for performing a domain transformation of a digital signal from the time domain into the frequency domain and vice versa, the method including performing the transformation by a transforming element, the transformation element comprising a plurality of lift... | 02/28/2012 |
| 8126952 | Unified inverse discrete cosine transform (IDCT) microcode processor engine The present invention provides a unified inverse discrete cosine transform (IDCT) microcode processor engine, which is able to process IDCT with different video standards and also achieves the processing speed requirement. The microcode processor engine comprises a ... | 02/28/2012 |
| 8126951 | Method for transforming a digital signal from the time domain into the frequency domain and vice versa A method for transforming a digital signal from the time domain into the frequency domain and vice versa using a transformation function comprising a transformation matrix, the digital signal comprising data symbols which are grouped into a plurality of blocks, each... | 02/28/2012 |
| 8019804 | Method and apparatus for calculating an SSD and encoding a video signal The present invention relates to a method and apparatus for calculating the Sum of Squared Differences (SSD) between a source block and a reconstructed block of image or video data encoding according to an encoding scheme such as H.264/AVC. In a preferred embodiment... | 09/13/2011 |
| 7962542 | Method and apparatus for inverse discrete cosine transform A method of implementing a two-dimensional Inverse Discrete Cosine Transform on a block of input data. The method includes 1) generating a performance array for the columns of the input data; 2) performing a column-wise IDCT upon the input data, the IDCT performed i... | 06/14/2011 |
| 7840625 | Methods for performing fast discrete curvelet transforms of data Fast digital implementations of the second generation curvelet transform for use in data processing are disclosed. One such digital transformation is based on unequally-spaced fast Fourier transforms (USFFT) while another is based on the wrapping of specially select... | 11/23/2010 |
| 7805477 | Computing circuits and method for running an MPEG-2 AAC or MPEG-4 AAC audio decoding algorithm on programmable processors The present invention relates to computing circuits and method for running an MPEG-2 AAC or MPEG-4 AAC algorithm efficiently, which is used as an audio compression algorithm in multi-channel high-quality audio systems, on programmable processors. In accordance with ... | 09/28/2010 |
| 7792891 | Forward discrete cosine transform engine Systems and methods are disclosed to perform fast discrete cosine transform (DCT) by computing the DCT in five stages using three coefficients, and scaling the outputs using a plurality of scaling coefficients. ... | 09/07/2010 |
| 7730116 | Method and system for fast implementation of an approximation of a discrete cosine transform A processor includes a multi-stage pipeline having a plurality of stages. Each stage is capable of receiving input values and providing output values. Each stage performs one of a plurality of data transformations using the input values to produce the output values.... | 06/01/2010 |
| 7725516 | Fast DCT algorithm for DSP with VLIW architecture A single stage computation method to perform a discrete cosine transform operation is provided. The discrete cosine transform operation is performed by executing a plurality of very large instruction words (VLIW) using a digital signal processor. The plurality of ve... | 05/25/2010 |
| 7716265 | Data transformation apparatus and method The present invention performs a lossless four-point orthogonal transformation with reduced rounding errors using a simple configuration. A data transformation apparatus receives four items of vector data X0, X1, X2, and X3, | 05/11/2010 |
| 7634526 | Selectable quantization in an encoder A method for selectable quantization for use in an encoder for compressing video and/or audio data includes processing that begins by receiving discrete cosine transform data of an encoded signal. The processing continues by generating a plurality of quantization ma... | 12/15/2009 |
| 7627623 | Inverse modified discrete cosine transform (IMDCT) co-processor and audio decoder having the same Provided are an IMDCT co-processor and an audio decoder having the same. The IMDCT co-processor includes: an input buffer for storing an input inverse-quantized frequency spectrum sample value; an I/Q separator for dividing the sample value stored in the input buffe... | 12/01/2009 |
| 7613761 | Haar wavelet transform embedded lossless type II discrete cosine transform A shared lossless Haar transform and an appended discrete cosine transform type-II are combined to form a discrete cosine type-II transform in a parallel pipelined architecture for providing lossless data transformation. ... | 11/03/2009 |
| 7574468 | Digital signal processor having inverse discrete cosine transform engine for video decoding and partitioned distributed arithmetic multiply/accumulate unit therefor A distributed arithmetic multiply/accumulate (MAC) unit for computing inverse discrete cosine transformations (IDCTs). In one embodiment, the distributed arithmetic MAC unit includes: (1) a first pipeline stage configured to perform dot products on received sequenti... | 08/11/2009 |
| 7558815 | Processing of performance sensitive transforms The present invention provides a method, apparatus, and article of manufacture for controlling truncation error which is introduced when performing a transform equation as a result of lowering the precision of elements of the equation using shift right operations. T... | 07/07/2009 |
| 7555510 | Scalable system for inverse discrete cosine transform and method thereof The present invention provides an input data control method and system for a data processing system. The system comprises at least one basic operation unit (BOU) and is used for transforming one input matrix X into data in a plurality of specified columns in an outp... | 06/30/2009 |
| 7451170 | Rapid and low cost of inverse discrete cosine transform system and method thereof A data processing system transforms an input matrix with transform coefficients through an inverse discrete cosine transform procedure, and it consequentially obtains an output matrix. The input matrix comprises 2N×2N of discrete cosine transf... | 11/11/2008 |
| 7437394 | Merge and split discrete cosine block transform method Discrete Cosine Transforms in a radix-2 block transform method enables true split and merge transform processing of equal sized data halves in the transform domain for enabling recursive merges and splits in transform domain without data degradation. Input data in t... | 10/14/2008 |
| 7412470 | Arithmetic processing apparatus The arithmetic processing apparatus of the present invention is an arithmetic processing apparatus that can be reconfigured in accordance with a processing mode and has a plurality of arranged unit arithmetic circuits. Each unit arithmetic circuit includes at least ... | 08/12/2008 |
| 7395432 | Method of embedding/detecting digital watermark and apparatus for using thereof A watermark is embedded in spatial domain. However, the same effect as the watermark is embedded in frequency domain is obtained by inverse frequency transforming the watermark, and then embedding it. By doing that, robustness of the watermark is enhanced in compari... | 07/01/2008 |
| 7369989 | Unified filter bank for audio coding A unified filter bank for use in encoding and decoding MPEG-1 audio data, wherein input audio data is encoded into coded audio data and the coded audio data is subsequently decoded into output audio data. The unified filter bank includes a plurality of filters, with... | 05/06/2008 |
| 7346640 | Image processing apparatus supporting both discrete cosine transform and discrete wavelet transform An image processing apparatus supporting both discrete wavelet transform and discrete cosine transform with reduced hardware resources. The image processing apparatus is composed of an input unit receiving a plurality of pixel data, a controlling unit selecting a de... | 03/18/2008 |
| 7343389 | Apparatus and method for SIMD modular multiplication An apparatus and method for single instruction multiple data (SIMD) modular multiplication are described. In one embodiment, the method includes selection of modular multiplication method available from an operating environment. Once the multiplication method is sel... | 03/11/2008 |
| 7340497 | Signal processing device and signal processing method A signal processing device and method for performing a code string transform by transforming a time series signal with a frequency band from 0 to 20 kHz from a coding system into another, wherein the arithmetic operations of MDCT and IMDCT with a limited frequency b... | 03/04/2008 |
| 7337205 | Matrix multiplication in a vector processing system To perform multiplication of matrices in a vector processing system, partial products are obtained by dot multiplication of vector registers containing multiple copies of elements of a first matrix and vector registers containing values from rows of a second matrix.... | 02/26/2008 |
| 7330596 | Image decoding technique for suppressing tile boundary distortion An image decoding device for decoding a hierarchically encoded compressed code obtained by dividing an image into a plurality of tiles and performing discrete wavelet transform on the pixel values of the image tile by tile includes a tile boundary smoothing part tha... | 02/12/2008 |
| 7330866 | System for frequency-domain scaling for discrete cosine transform A system for frequency-domain scaling for DCT computation. Scale factors are applied to coefficients during the final steps of composition of 2-point DCTs. The number of multiplications and required precision are reduced. Fixed values for various scale factors can b... | 02/12/2008 |
| 7325023 | Method of making a window type decision based on MDCT data in audio encoding Preliminary Modified Discrete Cosine Transform (MDCT) coefficients are computed for a current frame of data and a next frame of data using a long window type. The computed preliminary MDCT coefficients of the current and next frames are then used to determine the wi... | 01/29/2008 |
| 7321690 | Device and method for detecting blurring of an image A device and method for determining whether or not an image is blurred. The device and method comprises an input part for receiving an image; a block classification part for dividing the received image into blocks and classifying the divided blocks into character bl... | 01/22/2008 |
| 7315877 | Efficient implementation of a multidimensional fast fourier transform on a distributed-memory parallel multi-node computer The present in invention is directed to a method, system and program storage device for efficiently implementing a multidimensional Fast Fourier Transform (FFT) of a multidimensional array comprising a plurality of elements initially distributed in a multi-node comp... | 01/01/2008 |
| 7292730 | Two-dimensional inverse discrete cosine transforming Implementing a two-dimensional inverse discrete cosine transform function includes executing two one-dimensional inverse discrete cosine transforming functions. Each of the one-dimensional functions is controlled to operate on a matrix of coefficients in either of t... | 11/06/2007 |
| 7289680 | Methods and apparatus for minimizing requantization error According to the present invention, methods and apparatus for performing error minimizing requantization are provided. Quantized coefficients associated with a bitstream are received. It is determined whether the quantized coefficients are associated with an inter m... | 10/30/2007 |
| 7263544 | Performance optimized approach for efficient numerical computations In particular, the present invention relates to a method and system for improving the efficiency of computational processes and specifically multiply and accumulate (“MAC”) processes such as the DCT (“Discrete Cosine Transform”) and/or IDCT (“Inverse Discr... | 08/28/2007 |
| 7263239 | Method for resizing images using the inverse discrete cosine transform A method for resizing images using the inverse discrete cosine transform (IDCT). The method enables digital video processing devices such as DVD players, digital broadcast receivers, or HD TVs to enlarge an original image to an arbitrary size without resulting in di... | 08/28/2007 |
| 7260217 | Speculative execution for data ciphering operations In one embodiment, a computer-implemented method comprises receiving a data cipher operation. The method also comprises processing the data cipher operation. The processing of the operation includes generating a number of portions of ciphertext from plaintext, where... | 08/21/2007 |
| 7251581 | Circuit for computing moment pre-products for statistical analysis A circuit for computing moment pre-products for statistical analysis reduces data transfer volume for on-chip statistical measurements. The circuit calculates the sums of multiple exponentiations of outputs of one or more measurement circuits, thereby reducing the a... | 07/31/2007 |
| 7240274 | Low complexity channel decoders A packet of encoded data is received and decoded using a look-up table that stores information approximating output of an algorithmic decoding process. ... | 07/03/2007 |
| 7236522 | Surveillance system and image signal processing apparatus Herein disclosed is a surveillance system, comprises: a plurality of imaging units for respectively taking images of specific objects to transform the images into image signals; a plurality of terminal units for respectively displaying thereon the images and produci... | 06/26/2007 |
| 7236543 | Method and apparatus of 8PSK modulation 8PSK modulation methods and apparatuses are provided. In a first embodiment, product factors of symbol vectors and a coefficient of a shape filter are stored in a table and compressed by 8 times based on a law of a trigonometric function, wherein a method of table l... | 06/26/2007 |
