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305 条记录 (耗时 0.026 秒)

    Picture information conversion method and apparatus
    91.
    发明授权
    Picture information conversion method and apparatus 失效
    图片信息转换方法和装置

    公开(公告)号：US07012959B2

    公开(公告)日：2006-03-14

    申请号：US09862421

    申请日：2001-05-23

    申请人： Kazushi Sato ,  Kuniaki Takahashi ,  Teruhiko Suzuki ,  Yoichi Yagasaki

    发明人： Kazushi Sato ,  Kuniaki Takahashi ,  Teruhiko Suzuki ,  Yoichi Yagasaki

    IPC分类号： H04N7/12 ,  H04N11/02

    CPC分类号： H04N19/59 ,  H04N19/112 ,  H04N19/115 ,  H04N19/124 ,  H04N19/139 ,  H04N19/14 ,  H04N19/149 ,  H04N19/176 ,  H04N19/20 ,  H04N19/40 ,  H04N19/46 ,  H04N19/61

    摘要： Stable code rate control is performed in converting picture information. MPEG2 interlaced scanned compressed picture information (bitstream) is converted into the progressive scanned MPG4 compressed picture information (bitstream). An activity synthesis unit 15 synthesizes from the activity-based activity information in the MPEG2 compressed picture information (bitstream) the macroblock-based activity information in the MPEG4 compressed picture information (bitstream). An MPEG4 picture information encoding unit (I/P-VOP) 11 uses the so-synthesized activity information as the parameter for adaptive quantization at the time of encoding the MPEG4 picture information.

    摘要翻译： 在转换图像信息时执行稳定的码率控制。 将MPEG2隔行扫描的压缩图像信息（比特流）转换成逐行扫描的MPG4压缩图像信息（比特流）。 活动合成单元15从MPEG2压缩图像信息（比特流）中的基于活动的活动信息合成MPEG4压缩图像信息（比特流）中的基于宏块的活动信息。 在编码MPEG4图像信息时，MPEG4图像信息编码单元（I / P-VOP）11使用所合成的活动信息作为自适应量化的参数。

    Picture signal encoding method and apparatus, picture signal decoding method and apparatus and recording medium
    93.
    发明授权
    Picture signal encoding method and apparatus, picture signal decoding method and apparatus and recording medium 失效
    图像信号编码方法及装置，图像信号解码方法及装置及记录介质

    公开(公告)号：US06535558B1

    公开(公告)日：2003-03-18

    申请号：US09012666

    申请日：1998-01-23

    申请人： Teruhiko Suzuki ,  Yoichi Yagasaki

    发明人： Teruhiko Suzuki ,  Yoichi Yagasaki

    IPC分类号： H04B166

    CPC分类号： H04N19/59 ,  H04N19/105 ,  H04N19/124 ,  H04N19/132 ,  H04N19/137 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/29 ,  H04N19/33 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

    摘要： A picture encoder for encoding picture signals of a lower hierarchy representing pre-set picture signals and picture signals of an upper hierarchy similarly representing pre-set picture signals. The picture encoder includes a first encoding unit for encoding the picture signals of the lower hierarchy using reference picture signals for outputting first pre-set encoded data, a second encoding unit for encoding the picture signals of the upper hierarchy using reference picture signals for outputting second pre-set encoded data, a first decoding unit for decoding the first encoded data for generating first reference picture signals and a second decoding unit for decoding the second encoded data for generating second reference picture signals. The second encoding unit encodes the picture signals using third reference picture signals generated on adaptively switching between the first reference picture signals and the second reference picture signals on the pixel basis.

    摘要翻译： 用于编码表示预置图像信号的下层图像信号和上层图像信号的图像编码器，类似地表示预设图像信号。 图像编码器包括第一编码单元，用于使用用于输出第一预设编码数据的参考图像信号对下层图像信号进行编码;第二编码单元，用于使用用于输出第二预编码数据的参考图像信号对上层图像信号进行编码 预设编码数据，用于解码用于产生第一参考图像信号的第一编码数据的第一解码单元和用于对用于产生第二参考图像信号的第二编码数据进行解码的第二解码单元。 第二编码单元使用在像素的基础上自适应地切换第一参考图像信号和第二参考图像信号之间产生的第三参考图像信号来编码图像信号。

    Multimedia information retrieval system and method including format conversion system and method
    94.
    发明授权
    Multimedia information retrieval system and method including format conversion system and method 有权
    多媒体信息检索系统及方法包括格式转换系统和方法

    公开(公告)号：US06463445B1

    公开(公告)日：2002-10-08

    申请号：US09410185

    申请日：1999-09-30

    申请人： Teruhiko Suzuki ,  Yoichi Yagasaki

    发明人： Teruhiko Suzuki ,  Yoichi Yagasaki

    IPC分类号： G06F1200

    CPC分类号： H04L67/2823 ,  H04N19/40 ,  H04N21/222 ,  H04N21/23109 ,  H04N21/234336 ,  H04N21/25833 ,  H04N21/64784 ,  H04N21/6581 ,  Y10S707/99953

    摘要： A multimedia information retrieval system and method including a method and system for automatic format conversion. The invention includes a data structure that is associated with each multimedia bitstream. The data structure identifies the encoding format, e.g., compression technique, used in the multimedia bitstream which is originated by a contents server. An automatic format conversion process then queries information from the client system (requester) and also receives the data structure identifying the encoding format. The client information identifies the decoding format. The automatic format conversion determines the transcoding process required for converting the bitstream from its encoded format to the format recognized by the client system. The format conversion process of the present invention also determines whether or not decoding is required before transcoding is performed thereby saving processing time and computer resources in those cases where decoding is not required. Moreover, the format conversion process also automatically determines the computer memory size required to perform the transcoding process thereby saving computer memory resources. The format converter can be implemented in software as an application and can also be integrated within a data access server. The data access server can be integrated within the client system or within the contents server. The format converter of the invention is particularly useful for electronic devices coupled in a communication network where the encoding format of the sender may not be compatible with the decoding format of the receiver, thereby requiring transcoding between the formats.

    摘要翻译： 一种多媒体信息检索系统和方法，包括用于自动格式转换的方法和系统。 本发明包括与每个多媒体比特流相关联的数据结构。 数据结构标识由内容服务器发起的多媒体比特流中使用的编码格式，例如压缩技术。 然后，自动格式转换过程从客户端系统（请求者）查询信息，并且还接收标识编码格式的数据结构。 客户信息识别解码格式。 自动格式转换确定将比特流从其编码格式转换为由客户端系统识别的格式所需的代码转换过程。 本发明的格式转换处理还确定在执行代码转换之前是否需要解码，从而在不需要解码的情况下节省处理时间和计算机资源。 此外，格式转换处理还自动确定执行代码转换处理所需的计算机存储器大小，从而节省计算机存储器资源。 格式转换器可以作为应用在软件中实现，并且还可以集成在数据访问服务器内。 数据访问服务器可以集成在客户端系统内或内容服务器中。 本发明的格式转换器对于在通信网络中耦合的电子设备特别有用，其中发送者的编码格式可能不与接收机的解码格式兼容，从而需要格式之间的转码。

    Coding device and method, decoding device and method, recording medium, and program
    96.
    发明授权
    Coding device and method, decoding device and method, recording medium, and program 有权
    编码装置和方法，解码装置和方法，记录介质和程序

    公开(公告)号：US08654862B2

    公开(公告)日：2014-02-18

    申请号：US13558758

    申请日：2012-07-26

    申请人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

    发明人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

    IPC分类号： H04N7/12

    CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

    摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

    摘要翻译： 一种编码装置和编码方法，解码装置和解码方法，记录介质和适用于编码用于传输或累积的较高压缩比的图像信号的程序。 在算术编码部分中，从输入图像压缩信息的语法元素中，帧/场标志首先由帧/场标志上下文模型编码。 当要处理的宏块进行基于帧的编码时，应用在当前H.26L标准中指定的基于帧的上下文模型。 另一方面，当对待处理的宏块进行基于场的编码时，对于下面描述的语法元素应用基于场的上下文模型。 本发明应用于编码图像信息的编码器和解码图像信息的解码器。