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1. 发明申请

US20180139461A1 Method and Apparatus for Using a Current Picture as a Reference Picture 审中-公开
公开(公告)号：US20180139461A1
公开(公告)日：2018-05-17
申请号：US15574253
申请日：2016-05-26
申请人： HFI Innovation Inc.
发明人： Shan LIU , Xiaozhong XU , Chenghao LIU
IPC分类号： H04N19/433 , H04N19/51 , H04N19/172 , H04N19/105 , H04N19/159
CPC分类号： H04N19/433 , H04B1/66 , H04N19/105 , H04N19/159 , H04N19/172 , H04N19/51 , H04N19/573 , H04N19/70 , H04N19/82
摘要： Methods and apparatus of managing decoded picture buffer for a video coding system are disclosed for a system using an Inter prediction mode and an Intra Block Copy mode. According to one method, a current-picture-usage flag in a picture or slice level is determined. If the current-picture-usage flag indicates that the current picture is not allowed to be used as the reference picture for the current picture, only one picture buffer is allocated in a DPB (decoded picture buffer) for the current picture and a reconstructed current picture after in-loop filtering is stored in the picture buffer in the DPB. According to another method, the system allocates only one picture buffer in the DPB for both the Inter prediction mode and the Intra Block Copy mode of the current picture if all of one or more in-loop filters are disabled for the entire part of the current picture.

2. 发明授权

US09900045B2 Base station system and communication apparatus 有权
公开(公告)号：US09900045B2
公开(公告)日：2018-02-20
申请号：US15455407
申请日：2017-03-10
申请人： KDDI CORPORATION
发明人： Akira Agata , Shinobu Nanba
IPC分类号： H04W72/04 , H04B1/66 , H04W88/08
CPC分类号： H04B1/66 , H03M7/30 , H04B1/662 , H04W16/24 , H04W16/26 , H04W72/042 , H04W72/0453 , H04W88/08
摘要： A base station system according to an aspect of the invention includes a baseband unit (BBU) and a radio frequency (RF) unit (RFU) connected to the BBU via a communication line. The RFU (BBU) measures the frequencies of occurrence of sampled values indicated by sampled data that is a digital signal corresponding to a baseband signal to be transmitted to the BBU (RFU), and generates a frequency distribution representing a relationship between the sampled value having occurred and the frequency of occurrence. Furthermore, the RFU (BBU) determines a plurality of thresholds for compressing the sampled data, which are used for quantization processing of the sampled value, in accordance with the generated frequency distribution, and compresses the sampled data by the quantization processing using the plurality of thresholds.

3. 发明授权

US09838227B2 Joint precoding and multivariate backhaul compression for the downlink of cloud radio access networks 有权
公开(公告)号：US09838227B2
公开(公告)日：2017-12-05
申请号：US14783596
申请日：2014-04-09
申请人： InterDigital Patent Holdings, Inc. , New Jersey Institute of Technology
发明人： Onur Sahin , Seok-Hwan Park , Osvaldo Simeone , Ariela Zeira
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H04B7/0456 , H04B1/66 , H04W84/04
CPC分类号： H04L25/03904 , H04B1/66 , H04B7/0456 , H04L25/03961 , H04W84/045
摘要： Signals transmitted on the backhaul links of a cloud radio access network may be compressed using joint compression encoding. Joint compression encoding may be performed using a successive estimation-compression architecture. Joint compression encoding may include designing preceding matrices that may be used with signal compression. Joint compression encoding may be applied to signals transmitted on the downlink of the cloud radio access network. One or more baseband signals to be delivered over the backhaul links may be jointly compressed using multivariate compression. Multivariate compression may be implemented using successive compression based on a sequence of minimum mean squared error (MMSE) estimations and per BS compression.

4. 发明申请

US20170041041A1 System and Apparatus for Decoding Tree-Based Messages 有权
标题翻译：用于解码基于树的消息的系统和装置
公开(公告)号：US20170041041A1
公开(公告)日：2017-02-09
申请号：US14820856
申请日：2015-08-07
申请人： Massachusetts Institute of Technology
发明人： Kermin Elliott Fleming , Peter Anthony Iannucci
IPC分类号： H04B1/66 , H04B1/16
CPC分类号： H04B1/66 , H03M13/3977 , H04B1/06 , H04B1/16 , H04L1/0054
摘要： A system and techniques for decoding a message received over a communication channel comprises a receiver for receiving an encoded message. A sorting module is configured to organize candidate messages into a number of bins, sort the candidate messages within each bin, and output a group of candidate messages, the group comprising a number of most likely candidate messages from each message bin. A traceback module is configured to receive the most likely candidate message, and to walk through the tree of candidate messages to generate a decoded message.
摘要翻译：用于解码通过通信信道接收的消息的系统和技术包括用于接收编码消息的接收机。排序模块被配置为将候选消息组织成多个箱，对每个仓内的候选消息进行排序，并输出一组候选消息，该组包括来自每个消息箱的最可能候选消息的数量。回溯模块被配置为接收最可能的候选消息，并且遍历候选消息的树以生成解码的消息。

5. 发明授权

US09356645B2 Saving bandwidth in transmission of compressed data 有权
标题翻译：节省压缩数据传输中的带宽
公开(公告)号：US09356645B2
公开(公告)日：2016-05-31
申请号：US13679487
申请日：2012-11-16
申请人： International Business Machines Corporation
发明人： Dakshi Agrawal , Vasileios Pappas , Ramya Raghavendra , Mudhakar Srivatsa , Dinesh C. Verma , Ho Y. Wong
IPC分类号： G06F15/16 , H04B1/66 , H04L29/08
CPC分类号： H04L67/2885 , H04B1/66 , H04L67/2842
摘要： A method, system and computer program product for transmitting content across a link in a communications network. In an embodiment, the method comprises examining traffic in the network at a sender end of the link to determine if the traffic is carrying compressed content; when the traffic is carrying compressed content, decompressing at least one portion of the compressed content; and checking a cache to determine if the cache has content matching the at least one decompressed portion of the content. In an embodiment, the method further comprises when the cache has content matching the at least one decompressed portion of the content, determining an identifier associated with the at least one decompressed portion of the content; and using the identifier to reconstruct, at a receiving end of the link, the at least one decompressed portion of the content. In one embodiment, the at least one decompressed portion of the content from the traffic is replaced with an index, the index is compressed to form the associated identifier, and the associated identifier is sent to the receiving end of the link.
摘要翻译：一种用于通过通信网络中的链路发送内容的方法，系统和计算机程序产品。在一个实施例中，该方法包括在链路的发送者端检查网络中的业务，以确定业务是否携带压缩内容; 当业务携带压缩内容时，解压缩压缩内容的至少一部分; 以及检查高速缓存以确定所述高速缓存是否具有与所述内容的所述至少一个解压缩部分匹配的内容。在一个实施例中，所述方法还包括：当所述高速缓存具有与所述内容的所述至少一个解压缩部分匹配的内容时，确定与所述内容的所述至少一个解压缩部分相关联的标识符; 以及使用所述标识符在所述链接的接收端处重构所述内容的所述至少一个解压缩部分。在一个实施例中，来自业务的内容的至少一个解压缩部分被替换为索引，索引被压缩以形成相关联的标识符，并且将相关联的标识符发送到链路的接收端。

6. 发明申请

US20160080027A1 BASE STATION SYSTEM AND COMMUNICATION APPARATUS 有权
标题翻译：基站系统和通信装置
公开(公告)号：US20160080027A1
公开(公告)日：2016-03-17
申请号：US14951776
申请日：2015-11-25
申请人： KDDI CORPORATION
发明人： Akira Agata , Shinobu Nanba
IPC分类号： H04B1/66 , H04W72/04
CPC分类号： H04B1/66 , H03M7/30 , H04B1/662 , H04W16/24 , H04W16/26 , H04W72/042 , H04W72/0453 , H04W88/08
摘要： A base station system according to an aspect of the invention includes a baseband unit (BBU) and a radio frequency (RF) unit (RFU) connected to the BBU via a communication line. The RFU (BBU) measures the frequencies of occurrence of sampled values indicated by sampled data that is a digital signal corresponding to a baseband signal to be transmitted to the BBU (RFU), and generates a frequency distribution representing a relationship between the sampled value having occurred and the frequency of occurrence. Furthermore, the RFU (BBU) determines a plurality of thresholds for compressing the sampled data, which are used for quantization processing of the sampled value, in accordance with the generated frequency distribution, and compresses the sampled data by the quantization processing using the plurality of thresholds.
摘要翻译：根据本发明的一个方面的基站系统包括通过通信线路连接到BBU的基带单元（BBU）和射频（RF）单元（RFU）。 RFU（BBU）测量由作为与要发送到BBU（RFU）的基带信号相对应的数字信号的采样数据指示的采样值的出现频率，并且生成频率分布，该频率分布表示具有发生频率发生。此外，RFU（BBU）根据生成的频率分布确定用于压缩用于采样值的量化处理的采样数据的多个阈值，并且通过使用多个的量化处理对采样数据进行压缩阈值。

7. 发明申请

US20160019908A1 COMPANDING APPARATUS AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION 有权
标题翻译：使用高级光谱扩展降低量化噪声的装置和方法
公开(公告)号：US20160019908A1
公开(公告)日：2016-01-21
申请号：US14762690
申请日：2014-04-01
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： Per HEDELIN , Arijit BISWAS , Michael SCHUG , Vinay MELKOTE
IPC分类号： G10L21/0232 , G10L19/032 , G10L19/008 , G10L19/02 , G10L21/034 , G10L25/18
CPC分类号： G10L21/0232 , G10L19/008 , G10L19/0208 , G10L19/032 , G10L21/034 , G10L25/18 , G10L25/45 , H03G7/007 , H04B1/66
摘要： Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuating segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.
摘要翻译：实施例涉及用于减少音频编解码器中的编码噪声的压扩方法和系统。压缩处理通过压缩处理来降低初始音频信号的原始动态范围，该压缩处理使用定义的窗口形状将初始音频信号分成多个段，使用基于非能量的平均值来计算频域中的宽带增益初始音频信号的频域样本，并且应用各个增益值来放大相对较低强度的片段并衰减相对较高强度的片段。压缩的音频信号然后被扩展回到基本上原始的动态范围，该动态范围应用反向增益值来放大相对较高强度的片段，并且衰减相对较低强度的段。使用QMF滤波器组来分析初始音频信号以获得频域表示。

8. 发明授权

US09230596B2 Systems and methods for variable rate coding in a data processing system 有权
标题翻译：数据处理系统中可变速率编码的系统和方法
公开(公告)号：US09230596B2
公开(公告)日：2016-01-05
申请号：US13426714
申请日：2012-03-22
申请人： Shaohua Yang
发明人： Shaohua Yang
IPC分类号： H03M13/00 , G11B20/18 , H04B1/66 , H04L1/00 , H03M13/29 , G06F11/10 , H03M5/14 , H03M13/11
CPC分类号： G11B20/1833 , G06F11/1076 , H03M5/145 , H03M13/1102 , H03M13/2906 , H03M13/2957 , H03M13/6343 , H03M13/6516 , H04B1/66 , H04L1/0057 , H04L1/0071
摘要： The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for variable rate coding in a data processing system. As an example, a data processing system may include an encoder circuit. The encoder circuit includes at least a first encoder and a second encoder, and is operable to generate a first level encoded output that is the same length for a given code rate whether the first encoder or the second encoder is selected.
摘要翻译：本发明涉及用于数据处理的系统和方法，更具体地涉及用于数据处理系统中的可变速率编码的系统和方法。作为示例，数据处理系统可以包括编码器电路。编码器电路至少包括第一编码器和第二编码器，并且可操作以产生对于给定代码速率而言第一编码器或第二编码器是否被选择的长度相同的第一级编码输出。

9. 发明授权

US09093065B2 Method and device for transcoding audio signals exclduing transformation coefficients below −60 decibels 有权
标题翻译：用于对音频信号进行代码转换的方法和装置，其转换系数低于-60分贝
公开(公告)号：US09093065B2
公开(公告)日：2015-07-28
申请号：US12311129
申请日：2007-09-06
申请人： Peter Jax , Sven Kordon
发明人： Peter Jax , Sven Kordon
IPC分类号： G10L19/00 , G10L25/00 , H04B1/66 , G10L19/022 , G10L19/16 , G06F3/16 , G10L19/008 , G10L19/005
CPC分类号： G10L19/022 , G06F3/16 , G10L19/005 , G10L19/008 , G10L19/173 , H04B1/66
摘要： The present invention provides method and device for transcoding between audio coding formats with different time-frequency analysis domains, as used for example by MP EG-AAC and mp3, particularly for facilitated and faster transcoding between such audio signals. A method for transcoding a framed audio signal from a first parameter domain into a second parameter domain comprises linearly transforming two or more parameters of the first parameter domain to at least one parameter of the second parameter domain, wherein the two or more parameters of the first parameter domain come from different frames of the audio signal in the first parameter domain. The linear transformation can be described as a matrix and implemented as a look-up table, wherein the matrix transformation coefficients below -60 Decibels are neglected.
摘要翻译：本发明提供了用于例如通过MP EG-AAC和mp3所使用的不同时间 - 频率分析域的音频编码格式之间进行代码转换的方法和装置，特别是用于在这种音频信号之间促进和更快的代码转换。将成帧音频信号从第一参数域转码成第二参数域的方法包括将第一参数域的两个或多个参数线性变换成第二参数域的至少一个参数，其中第一参数域的两个或多个参数参数域来自第一参数域中音频信号的不同帧。线性变换可以被描述为矩阵并被实现为查找表，其中低于-60分贝的矩阵变换系数被忽略。

10. 发明申请

US20150188602A1 DYNAMIC RANGE COMPRESSOR 有权
标题翻译：动态范围压缩机
公开(公告)号：US20150188602A1
公开(公告)日：2015-07-02
申请号：US14409939
申请日：2013-06-18
申请人： INSTITUT FUR RUNDFUNKTECHNIK GMBH
发明人： Jens Groh
IPC分类号： H04B1/66 , H04B1/00
CPC分类号： H04B1/66 , H03G7/002 , H03G7/007 , H03G9/025 , H03H17/0267 , H04B1/001 , H04B1/0017 , H04B1/1638 , H04B1/18
摘要： A dynamic range compressor of the subband type for carrying out a dynamic compression on a broadband input signal includes a subband splitting device (102) for splitting the broadband input signal into K narrowband subband signals (SSB1, . . . SSBk, . . . , SSBK), where K is an integer larger than 1. An amplifier unit (104) is provided for amplifying each of the K subband signals by a respective amplification factor (A1, . . . AK) to obtain K amplified subband signals. Further, a subband combining device (105) is provided for combining the K amplified subband signals to obtain a broadband output signal, which is a dynamically compressed version of the broadband input signal. An envelope detecting device (107) is provided for generating, for each of the K subbands, a respective one of K envelope signals. An amplifier control device (110) is provided for generating, in dependence of the K envelope signals, K amplifier control signals, each of the K amplifier control signals being representative of one of the K amplification factors. The amplifier control device (110) is adapted to generate an amplification control signal in dependence of more than one of the K envelope signals.
摘要翻译：用于在宽带输入信号上执行动态压缩的子带类型的动态范围压缩器包括用于将宽带输入信号分解为K个窄带子带信号（SSB1，...，SSBk，...）的子带分离装置（102） SSBK），其中K是大于1的整数。放大器单元（104）用于通过相应的放大因子（A1，...）放大每个K个子带信号，以获得K个放大的子带信号。此外，提供了一个子带合成装置（105），用于组合K个放大的子带信号以获得宽带输出信号，该宽带输出信号是宽带输入信号的动态压缩版本。提供包络检测装置（107），用于为K个子带中的每一个生成K个包络信号中的相应一个。放大器控制装置（110）被提供用于根据K包络信号产生K个放大器控制信号，K个放大器控制信号中的每一个代表K个放大系数之一。放大器控制装置（110）适于根据多于一个K包络信号产生放大控制信号。

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