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    • 2. 发明公开
    • COMPRESSION ENCODING DEVICE, COMPRESSION ENCODING METHOD, DECODING DEVICE, DECODING METHOD AND PROGRAM
    • 压缩编码装置,压缩编码方法,解码装置,解码方法和程序
    • EP3267587A1
    • 2018-01-10
    • EP16758765.8
    • 2016-02-18
    • Sony Corporation
    • FUKUI Takao
    • H03M7/42G10L19/00H03M3/02
    • H03M7/6011G10L19/00G10L19/0017H03M3/02H03M3/30H03M7/30H03M7/40H03M7/42H03M7/6005
    • The present disclosure relates to a compressive encoding apparatus, a compressive encoding method, a decoding apparatus, a decoding method, and a program which can provide a lossless compression technology having a higher compression rate.
      An encoding unit of the compressive encoding apparatus converts M bits of a ΔΣ-modulated digital signal into N bits (M > N) with reference to a first conversion table, and when the M bits are not able to be converted into the N bits with the first conversion table, converts the M bits into the N bits with reference to a second conversion table. When the number of bit patterns of the N bits is P, the first conversion table is a table storing (P-1) number of codes having higher generation frequencies for past bit patterns, and the second conversion table is a table storing (P-1) number of codes having higher generation frequencies for past bit patterns, which follow those of the first conversion table. The present disclosure is applicable to a compressive encoding apparatus that compressively encoding an audio signal, and the like, for example.
    • 本发明涉及能够提供具有更高压缩率的无损压缩技术的压缩编码设备,压缩编码方法,解码设备,解码方法和程序。 压缩编码装置的编码单元参考第一转换表将ΔΣ调制的数字信号的M位转换为N位(M> N),并且当M位不能被转换为N位时 第一转换表参照第二转换表将M位转换为N位。 当N位的位模式的数量是P时,第一转换表是存储(P-1)个具有较高的过去位模式的产生频率的代码的表,并且第二转换表是存储(P- 1)对于过去的比特模式具有较高的生成频率的编码数量,其遵循第一转换表的编码数量。 例如,本公开可应用于压缩编码音频信号的压缩编码设备等。
    • 7. 发明公开
    • Complex digital signal compression device, method and computer-readable storage medium, complex digital signal expansion device, method and computer-readable storage medium, and communication device
    • 压缩设备对于复杂的数字信号,方法和计算机可读存储介质扩展设备对于复杂的数字信号,方法和计算机可读存储介质以及通信设备
    • EP2911360A1
    • 2015-08-26
    • EP15155678.4
    • 2015-02-19
    • Mobile Techno Corp.
    • Amezawa, Yasuharu
    • H04L27/34H03M7/30H04W88/08
    • H03M7/30H03M7/42H04L27/34
    • An object of the present invention is to provide the compression device and the expansion device of a complex digital signal, which further raise the compression ratio of the compression digital signal. The compression device of the present invention comprises: first section that acquires a first phase and a second phase, wherein with a complex digital signal being inputted into the complex digital signal compression device, the first phase is a phase, in polar coordinates, which the complex digital signal has, and it is assumed that the complex digital signal inputted into the complex digital signal compression device is expressed as a sum of two complex digital signals with an equal amplitude, phases of which are centered at the first phase and are shifted by a phase that equals to the second phase in the positive and negative direction respectively; and second section that compresses the first phase and the second phase respectively by performing quantization. The expansion device of the present invention comprises third section and fourth section which perform the inverse processing of the second section and the first section, respectively, mentioned above.
    • 本发明的一个目的是提供一种压缩装置和一个复杂的数字信号,从而进一步提高压缩数字信号的压缩比的膨胀装置。 本发明的压缩装置包括:第一部分做获取第一相和第二相,具有复杂的数字信号被输入到复数数字信号压缩装置worin,第一阶段是在极坐标系的相位,其 复杂的数字信号具有,并且假定没有输入到复数数字信号压缩装置中的复数数字信号被过表达为两个复数字信号的振幅的总和,以相等的,其相位在所述第一相为中心,并通过移位 的相位做了等于在正和负方向,分别与第二相位; 和第二部分确实通过执行量化分别压缩第一阶段和第二阶段。 本发明的节流装置包括第三部分和第四部分,其分别执行所述第二部分和所述第一部分,的逆处理,如上所述。
    • 10. 发明公开
    • CONTEXT INITIALIZATION IN ENTROPY CODING
    • 熵编码中的上下文初始化
    • EP2721820A1
    • 2014-04-23
    • EP12728524.5
    • 2012-06-18
    • Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
    • GEORGE, ValeriBROSS, BenjaminKIRCHHOFFER, HeinerMARPE, DetlevNGUYEN, TungPREISS, MatthiasSIEKMANN, MischaSTEGEMANN, JanWIEGAND, Thomas
    • H04N7/26H04N7/50H03M7/42
    • H04N19/13H03M7/42H04N19/124H04N19/132H04N19/174H04N19/184H04N19/50H04N19/513H04N19/52H04N19/61H04N19/70H04N19/91
    • A decoder for decoding a video from a data stream into which syntax elements are coded using binarizations of the syntax elements, comprises an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
    • 一种解码器,用于使用语法元素的二进制化对其中语法元素被编码到的数据流中的视频进行解码的解码器包括熵解码器,该熵解码器被配置为使用二进制熵解码通过选择上下文中的上下文来从数据流中导出二进制化的数量 取决于数据流的先前解码的部分的不同上下文和更新与不同上下文相关联的概率状态; 去阴影器,其被配置为去语法化所述语法元素的二值化以获得所述语法元素的整数值; 被配置为使用量化参数基于所述语法元素的整数值来重建所述视频的重构器,其中所述熵解码器被配置为区分126个概率状态并且根据以下线性方程来初始化与所述不同上下文相关联的概率状态: 量化参数,其中熵解码器被配置为针对不同上下文中的每一个从相应的8位初始化值的第一和第二四位部分导出线性方程的斜率和偏移量。