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1.发明授权公开(公告)号：US07558319B2
公开(公告)日：2009-07-07
申请号：US10459617
申请日：2003-06-12
申请人： Shigeyuki Okada , Hideki Yamauchi
发明人： Shigeyuki Okada , Hideki Yamauchi
IPC分类号： H04B1/66
CPC分类号： H04N9/8042 , H04N5/783
摘要： Structure information on picture within a GOP of a coded data sequence is acquired beforehand. At the time of high-speed reproduction, a high-speed reproduction mode judging unit judges by referring to the picture structure information whether a high-speed smooth reproduction is possible or not. If the high-speed reproduction is possible, a high-speed smooth reproduction control unit performs the high-speed smooth reproduction. If not possible, a high-speed skip reproduction control unit performs high-speed skip reproduction. For reverse reproduction, image data for one GPO, for example, are recoded by an MPEG encoder and then the recoded image data are stored in a storage. Then, a coded data amount predicted from the structure information on the picture within the GOP is compared with the capacity of the storage, and a countermeasure such as raising a compression ratio is taken if the estimated coded data amount exceeds the capacity of the storage.
摘要翻译： 预先获取关于编码数据序列的GOP内的图像的结构信息。 在高速再现时，高速再现模式判断单元通过参考图像结构信息来判断是否可以进行高速平滑再现。 如果高速再现是可能的，则高速平滑再现控制单元执行高速平滑再现。 如果不可能，高速跳过再现控制单元执行高速跳过再现。 对于反向再现，例如一个GPO的图像数据由MPEG编码器重新编码，然后再编码的图像数据被存储在存储器中。 然后，将从GOP内的图像的结构信息预测的编码数据量与存储容量进行比较，并且如果估计的编码数据量超过存储容量，则采取诸如提高压缩比的对策。
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公开(公告)号：US20070025442A1
公开(公告)日：2007-02-01
申请号：US11494619
申请日：2006-07-28
申请人： Shigeyuki Okada , Yuh Matsuda , Hideki Yamauchi , Yasuo Ishii , Mitsuru Suzuki , Shinichiro Okada
发明人： Shigeyuki Okada , Yuh Matsuda , Hideki Yamauchi , Yasuo Ishii , Mitsuru Suzuki , Shinichiro Okada
CPC分类号： H04N19/615 , H04N19/124 , H04N19/13 , H04N19/139 , H04N19/52 , H04N19/523 , H04N19/527 , H04N19/61 , H04N19/63
摘要： A region setting unit 64 sets multiple global regions in a frame image. A bit number adjustment unit 62 adjusts the number of bits of the local motion vectors LMV which are to be obtained for each global region. A local motion vector detection unit 66 detects the local motion vectors LMV with the number of bits adjusted by the bit number adjustment unit 62 in units of macro blocks for each global region. A global motion vector calculation unit 68 calculates the global motion vector GMV which represents the global motion for each global region. A local motion vector difference coding unit 72 calculates the difference ΔLMV, which is the difference between each local motion vector LMV and the global motion vector GMV, for each global region, and performs coding thereof.
摘要翻译： 区域设置单元64在帧图像中设置多个全局区域。 位数调整单元62调整要为每个全局区域获得的局部运动矢量LMV的位数。 局部运动矢量检测单元66以每个全局区域的宏块为单位，以位数调整单元62调整的位数来检测局部运动矢量LMV。 全局运动矢量计算单元68计算表示每个全局区域的全局运动的全局运动矢量GMV。 局部运动矢量差分编码单元72针对每个全局区域计算每个局部运动矢量LMV和全局运动矢量GMV之间的差值DeltaLMV，并进行编码。
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3.发明申请公开(公告)号：US20060193524A1
公开(公告)日：2006-08-31
申请号：US11356470
申请日：2006-02-17
申请人： Tetsu Tarumoto , Tsuyoshi Watanabe , Yasuo Ishii , Shigeyuki Okada , Yoshihiro Matsuo , Hideki Yamauchi , Noriaki Kojima
发明人： Tetsu Tarumoto , Tsuyoshi Watanabe , Yasuo Ishii , Shigeyuki Okada , Yoshihiro Matsuo , Hideki Yamauchi , Noriaki Kojima
CPC分类号： H04N21/234327 , H04N7/17318 , H04N19/132 , H04N19/154 , H04N19/187 , H04N19/31 , H04N19/33 , H04N19/36 , H04N19/61 , H04N19/63 , H04N21/25866 , H04N21/2662 , H04N21/4318 , H04N21/8355
摘要： An image coding apparatus is provided which satisfies various levels of demands on image distribution, both from image providers and from users. The image coding apparatus includes a coding block which codes predetermined image data. A separation unit separates the coded image data into basic data for reproducing contents of the coded image data as a visible image, and complementary data for complementing the basic data, so that the two pieces of data are distributed on different occasions. An adding unit adds information for independent copyright control to at least either one of the basic data and the complementary data.
摘要翻译： 提供一种图像编码装置，其满足来自图像提供者和用户对图像分发的各种要求。 图像编码装置包括编码预定图像数据的编码块。 分离单元将编码图像数据分离为用于再现作为可见图像的编码图像数据的内容的基本数据，以及用于补充基本数据的补充数据，使得两个数据在不同的场合下分布。 添加单元将用于独立版权控制的信息添加到基本数据和补充数据中的至少一个。
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公开(公告)号：US20050226333A1
公开(公告)日：2005-10-13
申请号：US11074728
申请日：2005-03-09
申请人： Mitsuru Suzuki , Shigeyuki Okada , Hideki Yamauchi
发明人： Mitsuru Suzuki , Shigeyuki Okada , Hideki Yamauchi
IPC分类号： H04N19/50 , H04N5/14 , H04N7/12 , H04N19/105 , H04N19/134 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/436 , H04N19/51 , H04N19/56
摘要： The present invention provides a technique for reducing a period of time required for detection of a motion vector. With a method for detecting a motion vector between an input image and a reference image used for a reference of the input image, first, a two-dimensional search region having a predetermined pattern is determined, and matching is computed between a coding target block in the input image and multiple blocks represented by multiple search points included in the search region in parallel. In a case wherein the evaluated computation results exhibit optimum matching results, the motion vector is determined based upon the computation results. In a case wherein the optimum solution has not been obtained, the search region for the next matching is determined based upon the evaluation results, and search is repeated.
摘要翻译： 本发明提供了一种用于减少检测运动矢量所需的时间周期的技术。 利用用于检测用于输入图像的参考的输入图像和参考图像之间的运动矢量的方法，首先确定具有预定图案的二维搜索区域，并且计算出在 输入图像和由并行包括在搜索区域中的多个搜索点表示的多个块。 在评估计算结果呈现最佳匹配结果的情况下，基于计算结果确定运动矢量。 在未获得最佳解的情况下，根据评价结果确定下一个匹配的搜索区域，并重复搜索。
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公开(公告)号：US5809454A
公开(公告)日：1998-09-15
申请号：US678370
申请日：1996-06-28
CPC分类号： G11B27/005 , G10L21/04 , G11B20/00007 , G11B20/10527 , G11B2220/20
摘要： A audio reproducing apparatus includes an audio decoder and a voice speed converting unit. The audio decoder decodes an audio data stream to produce an audio signal. The voice speed converting unit converts the audio signal in such a manner that when a bit rate is higher than a normal bit rate, a pitch of a reproduced sound interval is the same as the pitch of the sound interval in a normal playback mode and a voice speed in the reproduced sound interval approaches a voice speed in a sound interval in the normal playback mode. The voice speed converting unit further performs voice speed conversion on the audio signal in such a manner that when the bit rate is lower than the normal bit rate, the sound interval is not noticeably interrupted.
摘要翻译： 音频再现装置包括音频解码器和语音速率转换单元。 音频解码器解码音频数据流以产生音频信号。 语音速度转换单元以这样的方式转换音频信号：当比特率高于正常比特率时，再现的声音间隔的音高与正常播放模式中的声音间隔的间距相同，并且 再现声音间隔中的声音速度接近通常重放模式下的声音间隔中的语音速度。 语音速度转换单元进一步对音频信号进行语音速度转换，使得当比特率低于正常比特率时，声音间隔不会明显中断。
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公开(公告)号：US07120306B2
公开(公告)日：2006-10-10
申请号：US10391020
申请日：2003-03-19
申请人： Shigeyuki Okada , Hideki Yamauchi
发明人： Shigeyuki Okada , Hideki Yamauchi
CPC分类号： H04N19/436 , H04N19/124 , H04N19/423 , H04N19/63
摘要： A wavelet transform is applied to an original image, so as to generate an image of a first hierarchy. Among the thus generated image of the first hierarchy, each of high-frequency sub-band components 1HL, 1LH and 1HH are immediately quantized and coded so as to be temporarily stored in a coded data storage. Another wavelet transform is applied to an LL sub-band component, among the image of the first hierarchy, so as to generate an image of a second hierarchy. Thereafter, an image of a third hierarchy is generated from an LL sub-band component in the image of the second hierarchy. During such a process, quantization and coding processings are performed in parallel with transformation processings. After all processings are completed and the coded data are prepared, coded image data complying with the JPEG2000 standard are generated by first reading out low-frequency components in sequence from the prepared coded data.
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公开(公告)号：US07197191B2
公开(公告)日：2007-03-27
申请号：US10390909
申请日：2003-03-19
CPC分类号： H03H17/0202 , G06T9/007
摘要： An SRAM is used as a pixel buffer which stores a partial image region copied from a frame buffer. A vertical filter reads a pair of target pixels arranged in a vertical direction from the pixel buffer and performs a filtering process of a discrete wavelet transform in the vertical direction. An intermediate result obtained in the filtering process is stored in a register. The vertical filter uses the intermediate result in filtering the next two pixels. A horizontal filter receives two transformed results from the vertical filter and performs a filtering process on the transformed results in the horizontal direction. The intermediate results obtained in the horizontal filtering are also stored in a register and utilized in the next filtering.
摘要翻译： SRAM用作存储从帧缓冲器复制的部分图像区域的像素缓冲器。 垂直滤波器从像素缓冲器读取沿垂直方向布置的一对目标像素，并且在垂直方向上执行离散小波变换的滤波处理。 在滤波处理中获得的中间结果存储在寄存器中。 垂直滤波器使用中间结果来过滤接下来的两个像素。 水平滤波器从垂直滤波器接收两个变换结果，并对水平方向上的变换结果执行滤波处理。 在水平滤波中获得的中间结果也存储在寄存器中，并用于下一次滤波。
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公开(公告)号：US07181074B2
公开(公告)日：2007-02-20
申请号：US10386700
申请日：2003-03-13
申请人： Shigeyuki Okada , Hideki Yamauchi
发明人： Shigeyuki Okada , Hideki Yamauchi
IPC分类号： G06K9/46
CPC分类号： H04N19/14 , H04N5/232 , H04N19/10 , H04N19/179 , H04N19/63
摘要： An original image shot by a shooting unit is read in a frame buffer and transformed by a wavelet transformer. An evaluating unit monitors the coefficients of the HL, LH, HH sub-bands generated by the wavelet transformer and checks the number of the high frequency components in the original image. If there are sufficient high frequency components, the quality of the original image is judged to be good, and if not, the image quality is judged not to be good because of camera shake or the like. The evaluating unit sends a coding indication signal to a quantizer if the image quality is good. Thereby the wavelet transformed image is coded. If the image quality is not good, the evaluating unit sends a re-shooting indication signal to the shooting unit.
摘要翻译： 由拍摄单元拍摄的原始图像在帧缓冲器中读取并由小波变换器变换。 评估单元监视由小波变换器产生的HL，LH，HH子带的系数，并检查原始图像中高频分量的数量。 如果存在足够的高频分量，则原始图像的质量被判断为良好，如果不是，则由于相机抖动等而判断图像质量不好。 如果图像质量良好，则评估单元向量化器发送编码指示信号。 从而编码小波变换图像。 如果图像质量不好，则评估单元向拍摄单元发送重拍指示信号。
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9.发明授权Image decoding method and apparatus, and television receiver utilizing the same 有权图像解码方法和装置，以及利用其的电视接收机公开(公告)号：US07403563B2
公开(公告)日：2008-07-22
申请号：US10449537
申请日：2003-06-02
申请人： Shigeyuki Okada , Hideki Yamauchi
发明人： Shigeyuki Okada , Hideki Yamauchi
IPC分类号： H04B1/66
CPC分类号： H04N21/4402 , H04N21/23424 , H04N21/44016
摘要： A variable-length decoding (VLD) unit performs a variable-length decoding on an MPEG video stream. An inverse quantization (IQ) unit computes a discrete-cosine-transform (DCT) coefficient by performing an inverse quantization on results of decoding by the VLD unit. An inverse-discrete-cosine-transform (IDCT) unit carries out an IDCT for the DCT coefficients computed by the IQ unit so as to convert frequency components into the original signals. A motion-compensated-prediction (MC) unit performs a best-effort reproduction processing on received frames, during the time until the arrival of a frame serving as a reference for decoding, and returns to a normal decoding processing after the reference frame has been received.
摘要翻译： 可变长度解码（VLD）单元对MPEG视频流执行可变长度解码。 逆量化（IQ）单元通过对VLD单元的解码结果执行逆量化来计算离散余弦变换（DCT）系数。 逆离散余弦变换（IDCT）单元对由IQ单元计算的DCT系数执行IDCT，以将频率分量转换为原始信号。 运动补偿预测（MC）单元在直到作为用于解码的参考的帧的到达之前的时间内对接收到的帧执行尽力再现处理，并且在参考帧已经被执行之后返回到正常解码处理 收到了
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公开(公告)号：US20070047649A1
公开(公告)日：2007-03-01
申请号：US11511439
申请日：2006-08-29
申请人： Mitsuru Suzuki , Shigeyuki Okada , Hideki Yamauchi
发明人： Mitsuru Suzuki , Shigeyuki Okada , Hideki Yamauchi
摘要： A motion vector search unit determines a unit area of a bidirectional prediction frame for each motion vector of a backward reference frame to pass through, and stores information on the unit area to be passed into a pass area number holding unit. A reference vector prediction unit consults the pass area number holding unit to acquire the motion vector of the backward reference frame that passes a target unit area of the bidirectional prediction frame from a motion vector holding unit, and determines a reference vector to be applied to this target unit area. The motion vector search unit applies the reference vector to the target unit area of the bidirectional prediction frame, determines a forward motion vector and a backward motion vector of the target unit area by linear prediction, and makes a motion compensated prediction on the target unit area bidirectionally to generate a predicted image.
摘要翻译： 运动矢量搜索单元确定要通过的反向参考帧的每个运动矢量的双向预测帧的单位面积，并存储关于要传递到通过区域号保持单元的单位区域的信息。 参考矢量预测单元参考通过区域号保持单元，以从运动矢量保持单元获取通过双向预测帧的目标单位区域的反向参考帧的运动矢量，并且确定应用于该参考矢量预测帧的参考矢量 目标单位面积。 运动矢量搜索单元将参考矢量应用于双向预测帧的目标单位区域，通过线性预测确定目标单位区域的向前运动矢量和后向运动矢量，并对目标单位区域进行运动补偿预测 双向生成预测图像。
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