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    • 52. 发明专利
    • Digital image decoder and decoding method
    • 数字图像解码器和解码方法
    • JP2006203597A
    • 2006-08-03
    • JP2005013549
    • 2005-01-21
    • Pioneer Electronic Corpパイオニア株式会社
    • HAYASHI YUKIO
    • H04N19/50H04N19/102H04N19/134H04N19/139H04N19/142H04N19/176H04N19/189H04N19/44H04N19/527H04N19/59H04N19/67H04N19/895
    • PROBLEM TO BE SOLVED: To provide a digital image decoder in which concealment performance can be enhanced for an error block, and to provide a digital image decoding method.
      SOLUTION: The digital image decoder comprises a means for determining the scene change of a video image represented by image data when an error of encoded image data is detected by an error detecting means, a means for determining the pattern of a video image represented by the encoded image data when an error of encoded image data is detected by the error detecting means and the scene change determination means has determined that it is not a scene change video image, and a means performing different error concealment processing in correspondence with the case that the image data are determined as a scene change video image, the case that it is determined as a pattern image, and the case that it is not determined as a pattern image and generating decoded image data for a block where an error is detected.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够增加错误块的隐藏性能并提供数字图像解码方法的数字图像解码器。 解决方案:数字图像解码器包括一种用于确定由误差检测装置检测到编码图像数据的误差时由图像数据表示的视频图像的场景变化的装置,用于确定视频图像的模式的装置 由编码图像数据表示,当由错误检测装置检测到编码图像数据的错误并且场景变化确定装置已经确定其不是场景改变视频图像时,以及执行与之相对应的不同错误隐藏处理的装置 图像数据被确定为场景改变视频图像,将其确定为图案图像的情况以及未被确定为图案图像的情况,并且生成用于检测到错误的块的解码图像数据的情况 。 版权所有(C)2006,JPO&NCIPI
    • 53. 发明专利
    • Wireless video image transmission apparatus
    • 无线视频传输设备
    • JP2006165733A
    • 2006-06-22
    • JP2004350853
    • 2004-12-03
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • ISHII HIROAKIMURAKAMI SHINYANAGAO AKIFUMI
    • H04N19/50H04L1/16H04N19/102H04N19/159H04N19/172H04N19/37H04N19/503H04N19/577H04N19/65H04N19/67
    • PROBLEM TO BE SOLVED: To provide a wireless video image transmission apparatus for minimizing disturbance of a video image reproduced at a receiving side even when a communication state is deteriorated.
      SOLUTION: The wireless video image transmission apparatus includes: a video type identification means 118 for discriminating a type of video frames to be transmitted; an error detection means 120 for detecting the occurrence of a transmission error in the case of transmission of the video frame; a number of retrials storage means 110 for measuring the number of consecutive occurrence times of transmission errors by each frame type; and a number of retrial setting means 105 for storing a maximum number of retransmission times by each frame type, and sets the maximum retransmission times of intra-frames greater than that of the other frames, retransmits the video frames until the number of consecutive occurrence times of transmission errors reaches the maximum number of retransmission times and aborts the video frames when the number of consecutive occurrence times of transmission errors exceeds the maximum number of retransmission times. Further, the wireless video image transmission apparatus prioritizes the transmission order of the intra-frames and carries out preferential transmission of the intra-frames for a band guarantee period.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使当通信状态恶化时,提供一种用于最小化在接收侧再现的视频图像的干扰的无线视频图像传输装置。 解决方案:无线视频图像发送装置包括:视频类型识别装置118,用于识别要发送的视频帧的类型; 用于在发送视频帧的情况下检测发送错误的错误检测装置120; 多个重发存储装置110,用于测量每种帧类型的传输错误的连续出现次数; 以及多个重试设置装置105,用于存储每种帧类型的最大重传次数,并且设置帧内的最大重传次数大于其他帧的重传次数,重新发送视频帧直到连续发生次数 的传输错误达到最大重传次数,并且当传输错误的连续发生次数超过最大重传次数时中断视频帧。 此外,无线视频图像发送装置对帧内的发送顺序进行优先排序,并对频带保证期间进行帧内的优先发送。 版权所有(C)2006,JPO&NCIPI
    • 54. 发明专利
    • Moving image decoding apparatus and moving image decoding program
    • 移动图像解码设备和移动图像解码程序
    • JP2005303487A
    • 2005-10-27
    • JP2004113773
    • 2004-04-08
    • Victor Co Of Japan Ltd日本ビクター株式会社
    • TAKEHARA HIDEKI
    • H04N19/50H03M7/36H04N19/102H04N19/139H04N19/166H04N19/196H04N19/44H04N19/503H04N19/51H04N19/513H04N19/60H04N19/61H04N19/67H04N19/895H04N19/91H04N7/32
    • PROBLEM TO BE SOLVED: To provide a moving image decoding apparatus for preventing image deterioration, using a macro block (MB) in a reference picture, with as high a correlation as possible, to carry out error concealment, when there is an error in an image signal subjected to motion compensated prediction coding.
      SOLUTION: When a decoding error in an MB is detected, an error mode setting means 20 sets an error mode to an inverse orthogonal transform unit 14 and a motion compensation prediction unit 18, and the inverse orthogonal transform unit 14 and the motion compensation prediction unit 18 carry out processing by setting a prediction error to 0 and a motion vector to 0. A reference image selecting section 17b counts the number of referenced times for each of reference pictures in reference index list (RIL) information and selects a reproduced picture, whose number of referenced times is a maximum among the reproduced pictures saved in an image memory 16 as a reference picture, when the error mode is set to the reference image selection section 17b, and the motion compensation prediction unit 18 reads the reference picture. Thus, the MB related to the error is replaced with an MB corresponding to the reference picture with the highest correlativity.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:为了提供一种用于防止图像劣化的运动图像解码装置,使用参考图像中的宏块(MB)尽可能高的相关性来执行错误隐藏,当存在 经过运动补偿预测编码的图像信号的误差。 解决方案:当检测到MB中的解码错误时,错误模式设置装置20将错误模式设置为逆正交变换单元14和运动补偿预测单元18,并且逆正交变换单元14和运动 补偿预测单元18通过将预测误差设置为0并将运动矢量设置为0来执行处理。参考图像选择部17b对参考索引列表(RIL)信息中的每个参考图像的参考时间数进行计数,并选择再现 图像,其参考时间的数量在作为参考图像存储在图像存储器16中的再现图像中是最大值,当错误模式被设置为参考图像选择部分17b时,运动补偿预测单元18读取参考图像 。 因此,与错误相关的MB被替换为与具有最高相关性的参考图片相对应的MB。 版权所有(C)2006,JPO&NCIPI