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    • 2. 发明授权
    • Image decoding apparatus and image coding apparatus
    • 图像解码装置和图像编码装置
    • US06683992B2
    • 2004-01-27
    • US09749755
    • 2000-12-28
    • Toshiya TakahashiHiroaki Toida
    • Toshiya TakahashiHiroaki Toida
    • G06K900
    • G06T9/20H04N19/21H04N19/423H04N19/436H04N19/44H04N19/563
    • A decoding LSI adaptable to MPEG4 is provided with a padding means for performing padding on decoded texture data, an arithmetic decoding means for performing arithmetic decoding on coded shape data, and a composition means for compositing a plurality of texture data to generate composite image data. The padding means, the arithmetic decoding means, and the composition means are implemented by hardware circuits, i.e., a padding engine, an arithmetic decoding engine, and a composition engine, respectively. Therefore, the decoding LSI can perform high-speed decoding on a bitstream corresponding to plural objects, such as images, which are compressively coded by the MPEG4 coding method, with reduced cost of the hardware circuits performing the decoding process.
    • 适用于MPEG4的解码LSI具有用于对解码的纹理数据执行填充的填充装置,用于对编码形状数据执行算术解码的算术解码装置,以及用于合成多个纹理数据以生成合成图像数据的合成装置。 填补装置,算术解码装置和合成装置分别由硬件电路,即填充引擎,算术解码引擎和合成引擎来实现。 因此,解码LSI可以以降低执行解码处理的硬件电路的成本,对与MPEG4编码方法进行压缩编码的多个对象等图像进行高速解码。
    • 4. 发明申请
    • Image Decoding Apparatus and Image Decoding Method
    • 图像解码装置和图像解码方法
    • US20090141798A1
    • 2009-06-04
    • US11887441
    • 2006-03-31
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • H04N7/32
    • H04N19/159H04N19/11H04N19/136H04N19/176H04N19/423H04N19/44H04N19/46H04N19/593H04N19/61H04N19/89
    • An image decoding apparatus and an image decoding method capable of generating a decoded image even in the case where a pixel in a block is necessary as a reference pixel, the block where an intra prediction mode specified in a stream is unavailable according to a standard, due to a transmission error, a coding-method error, or the like. An image decoding apparatus (200) determines whether or not a reference block necessary for a specified intra prediction mode is available, based on intra-prediction mode information extracted by an intra-prediction mode extraction unit (102) and peripheral block pixel information stored in a line memory (104). The image decoding apparatus (200) includes a reference pixel determination unit (201) which controls a switch unit (202); and a substitute intra-prediction image generation unit (203) which generates a substitute intra-prediction image in the case where a reference block necessary for a specified intra prediction mode is unavailable.
    • 即使在需要块中的像素作为参考像素的情况下也能够生成解码图像的图像解码装置和图像解码方法,流中指定的帧内预测模式的块根据标准不可用, 由于传输错误,编码方法错误等。 根据帧内预测模式提取单元(102)提取的帧内预测模式信息和存储在帧内预测模式提取单元(102)中的外围块像素信息,图像解码装置(200)确定指定的帧内预测模式所需的参考块是否可用 行存储器(104)。 图像解码装置(200)包括:控制切换部(202)的基准像素决定部(201)。 以及在指定的帧内预测模式所需的基准块不可用的情况下,生成替代帧内预测图像的替代帧内预测图像生成单元(203)。
    • 5. 发明授权
    • Decoding-processing apparatus and method
    • 解码处理装置和方法
    • US07724830B2
    • 2010-05-25
    • US11665063
    • 2005-11-02
    • Masayoshi TojimaMasayasu IguchiKiyofumi AbeHiroaki ToidaTakahiro Nishi
    • Masayoshi TojimaMasayasu IguchiKiyofumi AbeHiroaki ToidaTakahiro Nishi
    • H04N7/32
    • H04N19/00006H03M7/4006H04N19/10H04N19/40H04N19/70H04N19/89H04N19/91
    • A decoding-processing apparatus that decodes bitstreams using an intermediate format. The apparatus includes a context-calculating unit (2) calculating the probability of symbols contained in incoming bitstreams, a parameter-generating unit (3) generating parameters for use in the context-calculating unit (2), and an arithmetic decoding-calculating unit (4) decoding the incoming bitstreams in accordance with the probability, thereby providing decoded data. The apparatus also includes a stream-converting unit (5) converting the decoded data into intermediate bitstreams, a storage unit (6) storing the intermediate bitstreams, a synchronization-detecting unit (7) detecting calculation start timing from the intermediate bitstreams fed out of the storage unit (6), thereby providing detected calculation start timing, and a multivalued calculating unit (8) permitting the intermediate bitstreams fed out of the storage unit (6) to be multivalued in synchronism with the detected calculation start timing from the synchronization-detecting unit (7).
    • 一种使用中间格式解码比特流的解码处理装置。 该装置包括:计算输入比特流中包含的符号概率的上下文计算单元(2),生成上下文计算单元(2)中使用的参数的参数生成单元(3)和算术解码计算单元 (4)根据概率解码输入比特流,由此提供解码数据。 该装置还包括将解码数据转换为中间比特流的流转换单元(5),存储中间比特流的存储单元(6),同步检测单元(7)从从 存储单元(6),从而提供检测到的计算开始定时;以及多值计算单元(8),其允许从存储单元(6)馈送的中间比特流与来自同步的计算开始定时的检测到的计算开始定时同步多值, 检测单元(7)。
    • 6. 发明申请
    • Decoding-Processing Apparatus And Method
    • 解码处理装置及方法
    • US20090225865A1
    • 2009-09-10
    • US11665063
    • 2005-11-02
    • Masayoshi TojimaMasayasu IguchiKiyofumi AbeHiroaki ToidaTakahiro Nishi
    • Masayoshi TojimaMasayasu IguchiKiyofumi AbeHiroaki ToidaTakahiro Nishi
    • H04N7/26H04L27/00
    • H04N19/00006H03M7/4006H04N19/10H04N19/40H04N19/70H04N19/89H04N19/91
    • A decoding-processing apparatus (1) comprising: a context-calculating unit (2) operable to calculate the probability of symbols contained in incoming bitstreams; a parameter-generating unit (3) operable to generate parameters for use in the context-calculating unit (2); an arithmetic decoding-calculating unit (4) operable to decode the incoming bitstreams in accordance with the probability, thereby providing decoded data; a stream-converting unit (5) operable to convert the decoded data into intermediate bitstreams; a storage unit (6) operable to store the intermediate bitstreams; a synchronization-detecting unit (7) operable to detect calculation start timing from the intermediate bitstreams fed out of the storage unit (6), thereby providing detected calculation start timing; and a multivalued calculating unit (8) operable to permit the intermediate bitstreams fed out of the storage unit (6) to be multivalued in synchronism with the detected calculation start timing from the synchronization-detecting unit (7).
    • 一种解码处理装置(1),包括:上下文计算单元(2),用于计算输入比特流中包含的符号的概率; 参数产生单元(3),用于产生在所述上下文计算单元(2)中使用的参数; 算术解码计算单元,用于根据概率解码输入比特流,从而提供解码数据; 流转换单元(5),用于将解码数据转换成中间比特流; 存储单元(6),用于存储中间比特流; 同步检测单元,用于从存储单元(6)馈送的中间比特流检测计算开始定时,从而提供检测到的计算开始时刻; 以及多值计算单元(8),其可操作以允许从所述同步检测单元(7)与所检测到的计算开始定时同步地将从所述存储单元(6)馈送的中间比特流多值化。
    • 8. 发明申请
    • Image Encoding Device, Image Decoding Device, and Integrated Circuit Used Therein
    • 图像编码装置,图像解码装置及其中使用的集成电路
    • US20080049832A1
    • 2008-02-28
    • US11628733
    • 2005-06-07
    • Hidekatsu OzekiMasayasu IguchiTakahiro NishiHiroaki ToidaHiroto TomitaAkihiko InoueTakashi Hashimoto
    • Hidekatsu OzekiMasayasu IguchiTakahiro NishiHiroaki ToidaHiroto TomitaAkihiko InoueTakashi Hashimoto
    • H04B1/66
    • H04N19/42H04N19/122H04N19/60
    • An image decoding device and an image encoding device according to the present invention includes an arithmetic unit for performing arithmetic processing, an arithmetic data storage unit for storing an arithmetic result by the arithmetic unit, an input selection unit for selecting whether to read pixel data that is to be inputted to the arithmetic unit from compressed image data or from pixel data stored in the arithmetic data storage unit, and inputting the read pixel data to the arithmetic unit, and an arithmetic control unit for controlling, based on a transform mode used and the number of arithmetic operations in the arithmetic unit, a destination from which the pixel data that is to be inputted to the arithmetic unit by the input selection unit is read as well as a combination of pieces of pixel data targeted for the arithmetic processing by the arithmetic unit and multiplier coefficients for the arithmetic processing, the arithmetic control unit previously defining an arithmetic procedure in each transform mode for each unit executable in one arithmetic operation in the arithmetic unit in association with the number of arithmetic operations.
    • 根据本发明的图像解码装置和图像编码装置包括:运算单元,用于进行运算处理;算术数据存储单元,用于存储运算单元的算术结果;输入选择单元,用于选择是否读取像素数据, 从压缩图像数据或从存储在算术数据存储单元中的像素数据输入到运算单元,并将读取的像素数据输入到运算单元,以及运算控制单元,用于基于所使用的变换模式和 算术单元中的算术运算的数量,由输入选择单元输入到运算单元的像素数据的目的地以及由运算单元计算的运算处理对象的像素数据的组合 算术单元和乘法器系数,运算控制单元先前定义算术 在算术单元中的一个算术运算中,每个单元的每个变换模式的过程与算术运算的数量相关联。
    • 10. 发明授权
    • Image decoding apparatus and image decoding method
    • 图像解码装置和图像解码方法
    • US08885707B2
    • 2014-11-11
    • US11887441
    • 2006-03-31
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • H04N7/12H04N19/593H04N19/61H04N19/89H04N19/44H04N19/11H04N19/176H04N19/46
    • H04N19/159H04N19/11H04N19/136H04N19/176H04N19/423H04N19/44H04N19/46H04N19/593H04N19/61H04N19/89
    • An image decoding apparatus and an image decoding method capable of generating a decoded image even in the case where a pixel in a block is necessary as a reference pixel, the block where an intra prediction mode specified in a stream is unavailable according to a standard, due to a transmission error, a coding-method error, or the like. An image decoding apparatus determines whether or not a reference block necessary for a specified intra prediction mode is available, based on intra-prediction mode information extracted by an intra-prediction mode extraction unit and peripheral block pixel information stored in a line memory. The image decoding apparatus includes a reference pixel determination unit which controls a switch unit; and a substitute intra-prediction image generation unit which generates a substitute intra-prediction image in the case where a reference block necessary for a specified intra prediction mode is unavailable.
    • 即使在需要块中的像素作为参考像素的情况下也能够生成解码图像的图像解码装置和图像解码方法,流中指定的帧内预测模式的块根据标准不可用, 由于传输错误,编码方法错误等。 图像解码装置基于由帧内预测模式提取单元提取的帧内预测模式信息和存储在行存储器中的周边块像素信息来确定指定帧内预测模式所需的参考块是否可用。 图像解码装置包括控制开关单元的参考像素确定单元; 以及在指定的帧内预测模式所需的基准块不可用的情况下,生成替代帧内预测图像的替代帧内预测图像生成单元。