Matches 1 - 50 out of 209 1 2 3 4 5 >
Match Document Document Title
7620675 Image and audio transform methods  
Inverse discrete cosine transform (type-III DCT), used in video/image and audio coding, is implemented in the form of FFT to lower computational complexity.
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...
7580843 Synthesis subband filter process and apparatus  
A synthesis subband filter apparatus is provided. The apparatus is used for processing 18 sets of signals which each includes 32 subband sampling signals in accordance with a specification...
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...
RE40854 Fast calculation apparatus for carrying out a forward and an inverse transform  
In an apparatus for carrying out a linear transform calculation on a product signal produced by multiplying a predetermined transform window function and an apparatus input signal, an FFT part ( 23...
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...
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...
7512539 Method and device for processing time-discrete audio sampled values  
An integer transform, which provides integer output values, carries out the TDAC function of a MDCT in the time domain before the forward transform. In overlapping windows, this results in a Givens...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
7203717 Fast modified discrete cosine transform method  
A technique for computationally efficient evaluation of the Modified Discrete Cosine Transform (MDCT) using the Fast Fourier Transform (FFT) method is presented in which the input of the FFT block...
7136890 Inverse discrete cosine transform apparatus  
An inverse discrete cosine transform (IDCT) apparatus is disclosed. The inverse discrete cosine transform (IDCT) apparatus can satisfy the bit accuracy of the standard recommendation and enable...
7127482 Performance optimized approach for efficient downsampling operations  
An algorithm and hardware structure is described for numerical operations on signals that is reconfigurable to operate in a downsampling or non-downsampling mode. According to one embodiment, a...
7117236 Parallel adder-based DCT/IDCT design using cyclic convolution  
The present invention provides a device and method for applying 1-D and 2-D DCT and IDCT transforms to sets of input data, typically 8×8 or 16×16 matricies of coefficients. In one embodiment, the...
7098818 Encoder and decoder using run-length-limited code  
When a zero run, which violating G constraint of a run-length-limited (RLL) code, is detected from the data stored in a first input register 1111 and a second input register 1112 , bits before...
7096245 Inverse discrete cosine transform supporting multiple decoding processes  
The present invention provides an apparatus and method for providing a programmable inverse discrete cosine transform, wherein the transform coefficients are loaded into a memory area of a core...
7082450 Implementation of a transform and of a subsequent quantization  
The invention relates to an approximation of a DCT and a quantization which are to be applied subsequently to digital data for compression of this digital data. In order to improve the transform,...
7065543 Apparatus and method for 2-D discrete transform using distributed arithmetic module  
The present invention relates to a distributed arithmetic module employing a zero input detection circuit that reduces electric power consumption by avoiding unnecessary calculation. An apparatus...
7058677 Method and apparatus for selectible 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....
7035332 DCT/IDCT with minimum multiplication  
A method, apparatus, computer medium, and other embodiments for discrete cosine transform and inverse discrete cosine transform (DCT/IDCT) of image signals are described. A DCT/IDCT module includes...
7020672 Reduced complexity IDCT decoding with graceful degradation  
Data compressed according to a lossy DCT-based algorithm, such as the MPEG or MPEG2 algorithms, is decompressed according to a dynamically-selected set of DCT coefficients, with unused coefficients...
7020671 Implementation of an inverse discrete cosine transform using single instruction multiple data instructions  
Compressed data are decompressed using an inverse discrete cosine transform (IDCT). A first one directional (1D) IDCT is performed resulting in a plurality of first 1D IDCT coefficients followed by...
7007055 Method of performing NxM Discrete Cosine Transform  
A fast and precise method to perform inverse and forward Discrete Cosine Transform (DCT) is disclosed. The method may be used for implementing a two-dimensional (2D) inverse or forward DCT that...
7007054 Faster discrete cosine transforms using scaled terms  
Faster discrete cosine transforms that use scaled terms are disclosed. Prior to application of a transform, equations are arranged into collections. Each collection is scaled by dividing each of...
6996595 Apparatus and method for consolidating output data from a plurality of processors  
In a system having a plurality of processors 1 to M and each processor has corresponding output registers 1 to N an apparatus and method to transfer is claimed. The data comprises a current...
6990506 Integer cosine transform matrix for picture coding  
An integer transform matrix is used for implementing a Discrete Cosine Transform (DCT). Optimized values for the integer transform matrix are derived that satisfy certain normalization constraints...
6973469 Two-dimensional discrete cosine transform using SIMD instructions  
A method is disclosed for performing a discrete cosine transform (DCT) using a microprocessor having an instruction set that includes SIMD floating point instructions. In one embodiment, the method...
6907438 Two-dimensional inverse discrete cosine transform using SIMD instructions  
A method is disclosed for performing an inverse discrete cosine transform (IDCT) using a microprocessor having an instruction set that includes SIMD floating-point instructions. In one embodiment,...
6904151 Method for the estimation and recovering of general affine transform  
The present invention relates to the methods of estimation and recovering of general affine geometrical transformations which were applied to data, extensible to any other defined class of...
6871208 Parallel adder-based DCT/IDCT design using cyclic convolution  
A device and method are described that apply 1-D and 2-D discrete cosine transforms (DCT) and inverse discrete cosine transforms (IDCT) to sets of input data, typically 8×8 or 16×16 matricies of...
6839727 System and method for computing a discrete transform  
A system and method for parallel computation of Discrete Sine and Cosine Transforms. The computing system includes a plurality of interconnected processors and corresponding local memories. An...
6832232 Dual-block inverse discrete cosine transform method  
A system and method for carrying out a two-dimensional forward and/or inverse discrete cosine transform is disclosed herein. In one embodiment, the method includes, but is not necessarily limited...
6831951 Image data processing apparatus and motion compensation processing method used therefor, and recording medium  
A compressed data buffer 21 maintains an image data loaded from a storage device 1 , and a decoding section 22 conducts variable length decoding, inverse quantization and inverse discrete...
6826584 Refinement of interpolated signals  
A method including decimating a signal x using a filter f to obtain a decimated signal y, interpolating the decimated signal y to obtain a reconstructed signal z, determining a refinement factor s...
6807310 Transformation of image parts in different domains to obtain resultant image size different from initial image size  
In one example, a transform component of a system receives a first plurality of image parts in a first domain that comprise an initial size. A transform component of the system transforms the first...
6799192 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)...
6766341 Faster transforms using scaled terms  
Fast transforms that use multiple scaled terms is disclosed. The discrete transforms are split into sub-transforms that are independently calculated using multiple scaling terms on the transform...
6754687 Methods and apparatus for efficient cosine transform implementations  
Many video processing applications, such as the decoding and encoding standards promulgated by the moving picture experts group (MPEG), are time constrained applications with multiple complex...
6742010 Dual-block discrete consine transform method  
A system and method for carrying out a two-dimensional forward and/or inverse discrete cosine transform is disclosed herein. In one embodiment, the method comprises: (1) receiving multiple data...
6735609 Inverse discrete-cosine transform apparatus  
An inverse discrete-cosine transform apparatus that is simple in structure and can yet output pixel data items different in resolution. The apparatus comprises eight inverse discrete-cosine...
Matches 1 - 50 out of 209 1 2 3 4 5 >