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1. 发明专利

JP2013211011A Reduction of errors during computation of inverse discrete cosine transform 有权
标题翻译：在反演离散COSINE变换计算过程中减少误差
公开(公告)号：JP2013211011A
公开(公告)日：2013-10-10
申请号：JP2013048219
申请日：2013-03-11
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： YURIY REZNIK
IPC分类号： G06F17/14 , H03M7/30 , H04N7/26
CPC分类号： G06F17/147 , H04N19/45 , H04N19/60 , H04N19/61
摘要： PROBLEM TO BE SOLVED: To provide techniques to reduce rounding errors during computation of a discrete cosine transform using fixed-point calculations.SOLUTION: In an inverse discrete cosine transform, a vector of coefficients is calculated using a series of butterfly structure operations on fixed-point numbers. Next, a midpoint bias value and a supplemental bias value are added to a DC coefficient of the matrix of scaled coefficients. Next, an inverse discrete cosine transform is applied to the resulting matrix of scaled coefficients. Values in the resulting matrix are then right-shifted in order to derive a matrix of pixel component values. As described herein, the addition of the supplemental bias value to the DC coefficient reduces rounding errors attributable to this right-shifting. As a result, a final version of a digital media file decompressed using these techniques may more closely resemble an original version of a digital media file.
摘要翻译：要解决的问题：提供在使用定点计算的离散余弦变换计算期间减少舍入误差的技术。解决方案：在离散余弦变换中，使用一系列蝶形结构运算来计算系数矢量，点数。接下来，将中点偏置值和补充偏置值加到缩放系数矩阵的DC系数中。接下来，将逆离散余弦变换应用于所得到的缩放系数矩阵。然后将所得矩阵中的值右移，以便导出像素分量值的矩阵。如这里所述，补充偏置值加到DC系数可以减少归因于该右移的舍入误差。因此，使用这些技术解压缩的数字媒体文件的最终版本可能更接近于数字媒体文件的原始版本。

2. 发明专利

JP2013178539A Scalable speech and audio encoding using combinatorial encoding of mdct spectrum 审中-公开
标题翻译：使用MDCT频谱的组合编码的可扩展语音和音频编码
公开(公告)号：JP2013178539A
公开(公告)日：2013-09-09
申请号：JP2013083340
申请日：2013-04-11
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： YURIY REZNIK , HUANG PENGJUN
IPC分类号： G10L19/16 , G10L25/18 , H03M7/30
CPC分类号： G10L19/24 , G10L19/038
摘要： PROBLEM TO BE SOLVED: To provide an efficient technique for encoding/decoding of MDCT (or similar transform-based) spectrum in scalable speech and audio compression algorithms.SOLUTION: A residual signal which is a difference between an original audio signal and a reconstructed version of the original audio signal is obtained from a Code Excited Linear Prediction (CELP)-based encoding layer and is transformed at a discrete cosine transform (DCT)-type transform layer to obtain a corresponding transform spectrum having a plurality of spectral lines. The transform spectrum spectral lines are transformed using a combinatorial position coding technique. The combinatorial position coding technique generates a lexicographical index for a selected subset of spectral lines, where each lexicographic index represents one of a plurality of possible binary strings representing the positions of the selected subset of spectral lines.
摘要翻译：要解决的问题：提供用于在可缩放语音和音频压缩算法中对MDCT（或类似的基于变换的）频谱进行编码/解码的有效技术。解决方案：作为原始音频信号和重构版本之间的差异的残差信号从基于码激励线性预测（CELP）的编码层获得原始音频信号，并在离散余弦变换（DCT）型变换层处变换，以获得具有多个谱线的对应变换频谱。使用组合位置编码技术对变换频谱谱线进行变换。组合位置编码技术为选定的谱线子集生成词典索引，其中每个词典索引表示表示所选择的谱线子集的位置的多个可能的二进制串中的一个。

3. 发明专利

JP2012105273A Transform design with scaled and non-scaled interface 有权
标题翻译：变换设计与标准和非标准接口
公开(公告)号：JP2012105273A
公开(公告)日：2012-05-31
申请号：JP2011243719
申请日：2011-11-07
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： YURIY REZNIK , ALBERT SCOTT LUDWIG , CHUNG HYUKJUNE , GARUDADRI HARINATH , NAVEEN B SRINIVASAMASI , FORM SAGETON
IPC分类号： H03M7/30 , H04N1/41 , H04N7/30
CPC分类号： G06F17/14 , G06F17/147 , H04N19/42 , H04N19/61
摘要： PROBLEM TO BE SOLVED: To efficiently perform transforms such as DCT and IDCT on a large quantity of data of various applications.SOLUTION: A full transform is a transform that implements the complete mathematical description of the transform. A scaled transform is a transform that operates on or provides scaled transform coefficients, which are scaled versions of full transform coefficients. The scaled transform may have lower computational complexity whereas the full transform may be simpler to use by applications. The full and scaled transforms may be for a 2D IDCT, which may be implemented in a separable manner with 1D IDCTs. The full and scaled transforms may also be for a 2D DCT, which may be implemented in a separable manner with ID DCTs. The 1D IDCTs and 1D DCTs may be implemented in a computationally efficient manner.
摘要翻译：要解决的问题：为了在各种应用的大量数据上有效地执行诸如DCT和IDCT之类的变换。解决方案：全变换是实现变换的完整数学描述的变换。缩放变换是对或者提供缩放变换系数的变换，其是全变换系数的缩放版本。缩放变换可能具有较低的计算复杂度，而全变换可能更易于由应用使用。完整和缩放的变换可以用于2D IDCT，其可以用1D IDCT以可分离的方式实现。完整和缩放的变换也可以用于2D DCT，其可以用ID DCT以可分离的方式实现。 1D IDCT和1D DCT可以以计算有效的方式实现。版权所有（C）2012，JPO＆INPIT

4. 发明专利

BRPI0815791B1 método, aparelho e memória para cálculo rápido de produtos por frações diádicas com erros de arredondamento de sinal simétrico 未知
公开(公告)号：BRPI0815791B1
公开(公告)日：2020-02-11
申请号：BRPI0815791
申请日：2008-08-28
申请人： QUALCOMM INC
发明人： YURIY REZNIK
IPC分类号： G06F17/14 , G06F7/499
摘要： método, aparelho e memória para cálculo rápido de produtos por frações diádicas com erros de arredondamento de sinal simétrico o produto de um valor de número inteiro e um valor irracional pode ser determinado por um algoritmo de sinais simétricos. um processo pode determinar algoritmos possíveis que reduzem ao mínimo métricas tais como assimetria média, erro médio, variância de erro e magnitude de erro. dadas uma variável de número inteiro x e constantes diádicas racionais que se aproximam da fração irracional, pode ser produzida uma série de valores intermediários têm sinais simétricos. os valores intermediários podem incluir uma sequência de operações de adição, subtração e deslocamento para a direita que, quando somadas entre si, se aproximam do produto do valor de número inteiro e do valor irracional. outras operações, tais como adições ou subtrações de os ou deslocamento em 0 bit, podem ser removidas.

5. 发明专利

BRPI0713321B1 aproximações eficientes para ponto fixo de transformadas de cosseno discretas diretas e inversas 未知
公开(公告)号：BRPI0713321B1
公开(公告)日：2018-12-04
申请号：BRPI0713321
申请日：2007-06-26
申请人： QUALCOMM INC
发明人： YURIY REZNIK
IPC分类号： G06F17/14 , H04N19/44 , H04N19/61
摘要： aproximações eficientes para ponto fixo de transformadas de coseno discretas diretas e inversas. são descritas técnicas para aproximar computação de uma transformada coseno discreta inversa utilizando cálculos de ponto fixo. de acordo com essas técnicas, matrizes de coeficientes escalonados são gerados mediante multiplicação dos coeficientes em matrizes de coeficientes codificados por fatores de escalonamento. a seguir, as matrizes de coeficientes polarizados são geradas mediante adição de um valor de polarização de ponto médio a um coeficiente dc da matriz de coeficientes escalonados. aritmética de ponto fixo é então usada para aplicar uma transformada às matrizes de coeficientes polarizados. valores nas matrizes resultantes são então deslocados à direita para derivar matrizes de valores de componentes de pixel. matrizes de valores de componentes de pixel são então combinadas para criar matrizes de pixel. as matrizes de pixel geradas por essas técnicas lembram muito as matrizes de pixels descompactadas utilizando a transformada coseno discreta inversa ideal ("idct").

6. 发明专利

MY150120A EFFICIENT MULTIPLICATION-FREE COMPUTATION FOR SIGNAL AND DATA PROCESSING 未知
公开(公告)号：MY150120A
公开(公告)日：2013-11-29
申请号：MYPI20064313
申请日：2006-10-11
申请人： QUALCOMM INC
发明人： YURIY REZNIK , HYUKJUNE CHUNG , HARINATH GARUDADRI , SRINIVASAMURTHY NAVEEN D , PHOOM SAGETONG
IPC分类号： G06F17/14
摘要： TECHNIQUES FOR EFFICIENTLY PERFORMING COMPUTATION FOR SIGNAL AND DATA PROCESSING ARE DESCRIBED. FOR MULTIPLICATION-FREE PROCESSING, A SERIES OF INTERMEDIATE VALUES IS GENERATED BASED ON AN INPUT VALUE FOR DATA TO BE PROCESSED. AT LEAST ONE INTERMEDIATE VALUE IN THE SERIES IS GENERATED BASED ON AT LEAST ONE OTHER INTERMEDIATE VALUE IN THE SERIES. ONE INTERMEDIATE VALUE IN THE SERIES IS PROVIDED AS AN OUTPUT VALUE FOR A MULTIPLICATION OF THE INPUT VALUE WITH A CONSTANT VALUE. THE CONSTANT VALUE MAY BE AN INTEGER CONSTANT, A RATIONAL CONSTANT, OR AN IRRATIONAL CONSTANT. AN IRRATIONAL CONSTANT MAY BE APPROXIMATED WITH A RATIONAL DYADIC CONSTANT HAVING AN INTEGER NUMERATOR AND A DENOMINATOR THAT IS A POWER OF TWOS. THE MULTIPLICATION-FREE PROCESSING MAY BE USED FOR VARIOUS TRANSFORMS (E.G., DCT AND MCI), FILTERS, AND OTHER TYPES OF SIGNAL AND DATA PROCESSING.

7. 发明专利

MY145533A TRANSFORMS WITH COMMON FACTORS 未知
公开(公告)号：MY145533A
公开(公告)日：2012-02-29
申请号：MYPI20082549
申请日：2008-07-09
申请人： QUALCOMM INC
发明人： YURIY REZNIK
IPC分类号： G06F17/14
摘要： WO 20071082272 PCT/US20071060405 36 TRANSFORMS WITH COMMON FACTORS ABSTRACT TECHNIQUES FOR EFFICIENTLY PERFORMING TRANSFORMS ON DATA ARE DESCRIBED. III ONE DESIGN, AN APPARATUS PERFORMS MULTIPLICATION OF A FIRST GROUP OF AT LEAST ONE DATA VALUE WITH A FIRST GROUP OF 5 AT LEAST ONE RATIONAL DYADIC CONSTANT THAT APPROXIMATES A FIRST GROUP OF AT LEAST ONE IRRATIONAL CONSTANT SCALED BY A FIRST COMMON FACTOR. THE APPARATUS FURTHER PERFORMS MULTIPLICATION OF A SECOND GROUP OF AT LEAST ONE DATA VALUE WITH A SECOND GROUP OF AT LEAST ONE RATIONAL DYADIC CONSTANT THAT APPROXIMATES A SECOND GROUP OF AT LEAST ONE IRRATIONAL CONSTANT SCALED BY A SECOND COMMON FACTOR. EACH RATIONAL DYADIC CONSTANT IS A RATIONAL NUMBER WITH A DYADIC DENOMINATOR. 10 THE FIRST AND SECOND GROUPS OF AT LEAST ONE DATA VALUE HAVE DIFFERENT SIZES. THE FIRST AND COMMON FACTORS MAY BE SELECTED BASED ON THE NUMBER OF LOGICAL AND ARITHMETIC OPERATIONS FOR THE MULTIPLICATIONS, THE PRECISION OF THE RESULTS, ETC.

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