专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US09824066B2 32-point transform for media data coding 有权
公开(公告)号：US09824066B2
公开(公告)日：2017-11-21
申请号：US13346632
申请日：2012-01-09
申请人： Rajan Laxman Joshi , Yuriy Reznik , Joel Sole Rojals , Marta Karczewicz
发明人： Rajan Laxman Joshi , Yuriy Reznik , Joel Sole Rojals , Marta Karczewicz
IPC分类号： G06F17/14 , H04N19/625
CPC分类号： G06F17/147 , H04N19/625
摘要： In general, techniques are described for implementing a 32-point discrete cosine transform (DCT) that is capable of applying multiple DCTs of different sizes. For example, an apparatus comprising a 32-point discrete cosine transform of type II (DCT-II) unit may implement the techniques of this disclosure. The 32-point DCT-II unit performs these DCTs-II of different sizes to transform data from a spatial to a frequency domain. The 32-point DCT-II unit includes an 16-point DCT-II unit that performs one of the DCTs-II of size 16 and at least one 8-point DCT-II unit that performs one of the DCTs-II of size 8. The 16-point DCT-II unit includes another 8-point DCT-II unit. The 16-point DCT-II unit also comprises at least one 4-point DCTs-II unit. Two or more of these DCTs-II units may concurrently perform DCTs-II of different sizes to various portions of the content data.

12. 发明申请

US20120177108A1 32-POINT TRANSFORM FOR MEDIA DATA CODING 有权
标题翻译：用于媒体数据编码的32点变换
公开(公告)号：US20120177108A1
公开(公告)日：2012-07-12
申请号：US13346632
申请日：2012-01-09
申请人： Rajan Laxman Joshi , Yuriy Reznik , Joel Sole Rojals , Marta Karczewicz
发明人： Rajan Laxman Joshi , Yuriy Reznik , Joel Sole Rojals , Marta Karczewicz
IPC分类号： H04N7/30 , H04N7/50 , H04N7/26
CPC分类号： G06F17/147 , H04N19/625
摘要： In general, techniques are described for implementing a 32-point discrete cosine transform (DCT) that is capable of applying multiple DCTs of different sizes. For example, an apparatus comprising a 32-point discrete cosine transform of type II (DCT-II) unit may implement the techniques of this disclosure. The 32-point DCT-II unit performs these DCTs-II of different sizes to transform data from a spatial to a frequency domain. The 32-point DCT-II unit includes an 16-point DCT-II unit that performs one of the DCTs-II of size 16 and at least one 8-point DCT-II unit that performs one of the DCTs-II of size 8. The 16-point DCT-II unit includes another 8-point DCT-II unit. The 16-point DCT-II unit also comprises at least one 4-point DCTs-II unit. Two or more of these DCTs-II units may concurrently perform DCTs-II of different sizes to various portions of the content data.
摘要翻译：通常，描述了用于实现能够应用不同尺寸的多个DCT的32点离散余弦变换（DCT）的技术。例如，包括II型（DCT-II）单元的32点离散余弦变换的装置可以实现本公开的技术。 32点DCT-II单元执行不同尺寸的DCT-II，以将数据从空间转换到频域。 32点DCT-II单元包括执行尺寸为16的DCT-II之一的16点DCT-II单元和执行尺寸为8的DCT-II之一的至少一个8点DCT-II单元 16点DCT-II单元包括另外8点DCT-II单元。 16点DCT-II单元还包括至少一个4点DCT-II单元。这些DCT-II单元中的两个或更多个可以对内容数据的各个部分同时执行不同大小的DCT-II。

13. 发明授权

US08819095B2 Fast computation of products by dyadic fractions with sign-symmetric rounding errors 有权
$Fast computation of products by dyadic fractions with sign-symmetric rounding errors$
标题翻译：通过具有符号对称舍入误差的二进制分数快速计算产品
公开(公告)号：US08819095B2
公开(公告)日：2014-08-26
申请号：US12139957
申请日：2008-06-16
申请人： Yuriy Reznik
发明人： Yuriy Reznik
IPC分类号： G06F7/14
CPC分类号： G06F7/483 , G06F7/49942 , G06F7/533 , G06F17/147 , H04N19/42 , H04N19/60
摘要： A product of an integer value and an irrational value may be determined by a sign-symmetric algorithm. A process may determine possible algorithms that minimize metrics such as mean asymmetry, mean error, variance of error, and magnitude of error. Given an integer variable x and rational dyadic constants that approximate the irrational fraction, a series of intermediate values may be produced that are sign-symmetric. The intermediate values may include a sequence of addition, subtraction and right shift operations the when summed together approximate the product of the integer and irrational value. Other operations, such as additions or subtractions of 0s or shifts by 0 bits may be removed.
摘要翻译：可以通过符号对称算法来确定整数值和非理性值的乘积。过程可以确定最小化度量的可能算法，例如平均不对称性，平均误差，误差方差和误差大小。给定一个整数变量x和近似非理性分数的有理二元常数，可以产生一系列中间值，这些中间值是符号对称的。中间值可以包括加法，减法和右移操作的序列，当加在一起近似整数和非理性值的乘积时。可以删除其他操作，例如0的加法或减法或0位的移位。

14. 发明授权

US08762441B2 4X4 transform for media coding 有权
标题翻译： 4X4转换为媒体编码
公开(公告)号：US08762441B2
公开(公告)日：2014-06-24
申请号：US12788666
申请日：2010-05-27
申请人： Yuriy Reznik
发明人： Yuriy Reznik
IPC分类号： G06F17/14
CPC分类号： G06F17/147 , H04N19/42 , H04N19/45 , H04N19/61 , H04N19/625
摘要： In general, techniques are described that provide for 4×4 transforms for media coding. A number of different 4×4 transforms are described that adhere to these techniques. As one example, an apparatus includes a 4×4 discrete cosine transform (DCT) hardware unit. The DCT hardware unit implements an orthogonal 4×4 DCT having an odd portion that applies first and second internal factors (C, S) that are related to a scaled factor (ξ) such that the scaled factor equals a square root of a sum of a square of the first internal factor (C) plus a square of the second internal factor (S). The 4×4 DCT hardware unit applies the 4×4 DCT implementation to media data to transform the media data from a spatial domain to a frequency domain. As another example, an apparatus implements a non-orthogonal 4×4 DCT to improve coding gain.
摘要翻译：通常，描述了为媒体编码提供4×4变换的技术。描述了许多遵循这些技术的不同的4×4变换。作为一个示例，装置包括4×4离散余弦变换（DCT）硬件单元。 DCT硬件单元实现具有奇数部分的正交4×4 DCT，该奇数部分应用与缩放因子（＆amp; xgr）相关的第一和第二内部因子（C，S），使得缩放因子等于总和的平方根的第一内部因子（C）的平方加上第二内部因子（S）的平方。 4×4 DCT硬件单元将4×4 DCT实现应用于媒体数据，以将媒体数据从空间域变换到频域。作为另一示例，设备实现非正交4×4 DCT以提高编码增益。

15. 发明申请

US20140036343A1 INTERFEROMETRIC MODULATOR WITH IMPROVED PRIMARY COLORS 审中-公开
标题翻译：具有改进的主色的干涉式调制器
公开(公告)号：US20140036343A1
公开(公告)日：2014-02-06
申请号：US13563473
申请日：2012-07-31
申请人： Jian J. Ma , John H. Hong , Yuriy Reznik
发明人： Jian J. Ma , John H. Hong , Yuriy Reznik
IPC分类号： G02B26/02 , G06T1/00 , H01J9/00 , B82Y20/00
CPC分类号： G02B26/001 , G09G3/3466 , G09G5/02
摘要： This disclosure provides systems, methods and apparatus related to an electromechanical display device. In one aspect, an analog interferometric modulator includes a display pixel having a movable reflector, and a movable absorbing layer. The movable absorbing layer is positionable at a variable first distance from an electrode that is substantially transparent over a visible wavelength spectrum. The movable reflector is positionable at a variable second distance from the movable absorbing layer. Changing the first distance and the second distance changes a characteristic of light reflected from the display element.
摘要翻译：本公开提供了与机电显示装置相关的系统，方法和装置。一方面，模拟干涉式调制器包括具有可移动反射器的显示像素和可移动吸收层。可移动吸收层可定位在与可见波长光谱基本上透明的电极可变的第一距离处。可移动反射器可定位在与可移动吸收层可变的第二距离处。改变第一距离和第二距离改变从显示元件反射的光的特性。

16. 发明授权

US08595281B2 Transforms with common factors 失效
标题翻译：转变与共同因素
公开(公告)号：US08595281B2
公开(公告)日：2013-11-26
申请号：US11621945
申请日：2007-01-10
申请人： Yuriy Reznik
发明人： Yuriy Reznik
IPC分类号： G06F17/14 , G06F7/52
CPC分类号： G06F17/147 , G06F7/4836 , G06F7/60 , H04N19/61 , H04N19/625
摘要： Techniques for efficiently performing transforms on data are described. In one design, an apparatus performs multiplication of a first group of at least one data value with a first group of 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. 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.
摘要翻译：描述用于有效地执行数据变换的技术。在一种设计中，装置执行第一组至少一个数据值与至少一个理性二元常数的第一组的乘法，该组合近似于由第一公共因子缩放的至少一个非理性常数的第一组。该装置进一步执行第二组至少一个数据值与至少一个理性二元常数的第二组的乘法，所述第二组接近由第二公共因子缩放的至少一个非理性常数的第二组。每个理性二元常数是具有二进制分母的理性数。至少一个数据值的第一组和第二组具有不同的大小。可以基于乘法的逻辑和算术运算的数量，结果的精度等来选择第一和常见因素。

17. 发明授权

US08571340B2 Efficient fixed-point approximations of forward and inverse discrete cosine transforms 有权
标题翻译：前向和反向离散余弦变换的有效定点近似
公开(公告)号：US08571340B2
公开(公告)日：2013-10-29
申请号：US11766653
申请日：2007-06-21
申请人： Yuriy Reznik
发明人： Yuriy Reznik
IPC分类号： G06K9/36
CPC分类号： G06F17/147 , H04N19/60 , H04N19/61
摘要： Techniques are described to approximate computation of an inverse discrete cosine transform using fixed-point calculations. According to these techniques, matrixes of scaled coefficients are generated by multiplying coefficients in matrixes of encoded coefficients by scale factors. Next, matrixes of biased coefficients are generated by adding a midpoint bias value to a DC coefficient of the matrix of scaled coefficients. Fixed-point arithmetic is then used to apply a transform to the matrixes of biased coefficients. Values in the resulting matrixes are then right-shifted in order to derive matrixes of pixel component values. Matrixes of pixel component values are then combined to create matrixes of pixels. The matrixes of pixels generated by these techniques closely resemble matrixes of pixels decompressed using the ideal inverse discrete cosine transform (“IDCT”).
摘要翻译：描述了使用定点计算近似计算逆离散余弦变换的技术。根据这些技术，通过将编码系数的矩阵中的系数乘以比例因子来生成缩放系数的矩阵。接下来，通过将中点偏置值添加到缩放系数的矩阵的DC系数来生成偏置系数的矩阵。然后使用定点算术将变换应用于偏置系数的矩阵。然后将所得到的矩阵中的值右移，以便导出像素分量值的矩阵。然后组合像素分量值的矩阵以创建像素矩阵。由这些技术生成的像素的矩阵与使用理想的反离散余弦变换（“IDCT”）解压缩的像素的矩阵非常相似。

18. 发明授权

US08548815B2 Efficient design of MDCT / IMDCT filterbanks for speech and audio coding applications 失效
标题翻译：用于语音和音频编码应用的MDCT / IMDCT滤波器组的高效设计
公开(公告)号：US08548815B2
公开(公告)日：2013-10-01
申请号：US12212920
申请日：2008-09-18
申请人： Ravi Kiran Chivukula , Yuriy Reznik
发明人： Ravi Kiran Chivukula , Yuriy Reznik
IPC分类号： G10L21/00
CPC分类号： G10L19/0212 , G06F17/147
摘要： A more efficient encoder/decoder is provided in which an N-point MDCT transform is mapped into smaller sized N/2-point DCT-IV and/or DCT-II transforms with isolated pre-multiplications which can be moved to a prior or subsequent windowing stage. That is, the windowing operations may be merged with first/last stage multiplications in the core MDCT/IMDCT functions, respectively, thus reducing the total number of multiplications. Additionally, the MDCT may be systematically decimated by factor of 2 by utilizing a uniformly scaled 5-point DCT-II core function as opposed to the DCT-IV or FFT cores used in many existing MDCT designs in audio codecs. The modified windowing stage merges factors from a transform stage and windowing stage to obtain piece-wise symmetric windowing factors, which can be represented by a sub-set of the piece-wise symmetric windowing factors to save storage space. Such features offer appreciable reduction in complexity and less memory usage than the prior art.
摘要翻译：提供了一种更有效的编码器/解码器，其中N点MDCT变换被映射到具有分离的预乘法的较小尺寸的N / 2点DCT-IV和/或DCT-II变换，其可以移动到先前或后续开窗阶段也就是说，加窗操作可以分别与核心MDCT / IMDCT功能中的第一/最后阶段乘法合并，从而减少乘法的总数。另外，与音频编解码器中许多现有MDCT设计中使用的DCT-IV或FFT核心相反，MDCT可以通过利用均匀缩放的5点DCT-II核心功能系统地抽取2倍。修改的窗口阶段将来自变换阶段和窗口阶段的因子合并，以获得分段对称窗口因子，其可以由分段对称窗口因子的子集来表示以节省存储空间。与现有技术相比，这样的特征提供了可观的降低复杂度和更少的存储器使用。

19. 发明授权

US08515767B2 Technique for encoding/decoding of codebook indices for quantized MDCT spectrum in scalable speech and audio codecs 有权
标题翻译：在可扩展语音和音频编解码器中对用于量化MDCT频谱的码本索引进行编码/解码的技术
公开(公告)号：US08515767B2
公开(公告)日：2013-08-20
申请号：US12263726
申请日：2008-11-03
申请人： Yuriy Reznik
发明人： Yuriy Reznik
IPC分类号： G10L19/00 , G10L21/00 , G10L19/12
CPC分类号： G10L19/24
摘要： Codebook indices for a scalable speech and audio codec may be efficiently encoded based on anticipated probability distributions for such codebook indices. A residual signal from a Code Excited Linear Prediction (CELP)-based encoding layer may be obtained, where the residual signal is a difference between an original audio signal and a reconstructed version of the original audio signal. The residual signal may be transformed at a Discrete Cosine Transform (DCT)-type transform layer to obtain a corresponding transform spectrum. The transform spectrum is divided into a plurality of spectral bands, where each spectral band having a plurality of spectral lines. A plurality of different codebooks are then selected for encoding the spectral bands, where each codebook is associated with a codebook index. A plurality of codebook indices associated with the selected codebooks are then encoded together to obtain a descriptor code that more compactly represents the codebook indices.
摘要翻译：用于可扩展语音和音频编解码器的码本索引可以基于这种码本索引的预期概率分布而被有效地编码。可以获得来自基于码激励线性预测（CELP）的编码层的残留信号，其中残留信号是原始音频信号和原始音频信号的重构版本之间的差异。可以在离散余弦变换（DCT）型变换层处变换残差信号，以获得相应的变换频谱。变换频谱被分成多个频谱带，其中每个频谱带具有多个谱线。然后选择多个不同的码本来编码频谱带，其中每个码本与码本索引相关联。然后将与所选码本相关联的多个码本索引编码在一起以获得更紧凑地表示码本索引的描述符码。

20. 发明授权

US08392200B2 Low complexity spectral band replication (SBR) filterbanks 有权
标题翻译：低复杂度谱带复制（SBR）滤波器组
公开(公告)号：US08392200B2
公开(公告)日：2013-03-05
申请号：US12759248
申请日：2010-04-13
申请人： Ravi Kiran Chivukula , Yuriy Reznik
发明人： Ravi Kiran Chivukula , Yuriy Reznik
IPC分类号： G10L19/02 , G10L19/00
CPC分类号： H03H17/0227 , G10L19/0204 , G10L19/0212 , G10L19/022 , G10L21/02 , G10L25/18 , H03H17/0213 , H03H17/0266 , H03H17/0272 , H03H2218/04
摘要： A complex analysis filterbank is implemented by obtaining an input audio signal as a plurality of N time-domain input samples. Pair-wise additions and subtractions of the time-domain input samples is performed to obtain a first and second groups of intermediate samples, each group having N/2 intermediate samples. The signs of odd-indexed intermediate samples in the second group are then inverted. A first transform is applied to the first group of intermediate samples to obtain a first group of output coefficients in the frequency domain. A second transform is applied to the second group of intermediate samples to obtain an intermediate second group of output coefficients in the frequency domain. The order of coefficients in the intermediate second group of output coefficients is then reversed to obtain a second group of output coefficients. The first and second groups of output coefficients may be stored and/or transmitted as a frequency domain representation of the audio signal.
摘要翻译：通过获得作为多个N个时域输入样本的输入音频信号来实现复分析滤波器组。执行时域输入样本的成对加法和减法以获得第一组和第二组中间样本，每组具有N / 2个中间样本。然后将第二组中奇数中值样本的符号反转。对第一组中间样本应用第一变换，以获得频域中的第一组输出系数。对第二组中间样本应用第二变换，以获得频域中的输出系数的中间第二组。输出系数的中间第二组中的系数顺序被反转以获得第二组输出系数。第一和第二组输出系数可以作为音频信号的频域表示被存储和/或发送。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式