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    • 1. 发明授权
    • Orthogonal transform apparatus for video signal processing
    • 用于视频信号处理的正交变换装置
    • US5343501A
    • 1994-08-30
    • US836660
    • 1992-02-18
    • Shinya KadonoMasakazu NishinoTatsuro JuriHiroshi HorikaneIwao Hidaka
    • Shinya KadonoMasakazu NishinoTatsuro JuriHiroshi HorikaneIwao Hidaka
    • G06F17/14H04L27/06G06F7/38
    • G06F17/147
    • In an apparatus for executing an algorithm for realizing an orthogonal transform operation such as the 8 points fast cosine transform, by operating on successive sets of data values of a digital signal such as a digital video signal in such applications as high efficiency coding of a digital video signal, a plurality of multiplication operations that are executed during processing of each set of data values are executed sequentially by time division multiplex operation of a single multiplier (32) which is capable of executing a multiplication operation within one sample period of the digital signal, with input and output data values being transferred by selector units (11, 33, 41) between the multiplier and other sections of the apparatus at appropriate times during processing of each set of the input digital signal values. The scale of hardware required for the apparatus is thereby reduced by comparison with an apparatus which employs a plurality of separate multipliers.
    • 在用于执行诸如8点快速余弦变换的正交变换操作的算法的装置中,通过在诸如数字视频信号的数字信号的数据信号的连续集合上进行操作,例如在数字 视频信号,在每个数据值集合的处理期间执行的多个乘法运算通过在数字信号的一个采样周期内能够执行乘法运算的单个乘法器(32)的时分多路复用操作来顺序执行 ,其中输入和输出数据值由选择器单元(11,33,41)在设备的乘法器和其它部分之间的适当时间在每组输入数字信号值的处理期间传送。 与使用多个单独的乘法器的装置相比,装置所需的硬件规模由此减少。
    • 3. 发明授权
    • Digital signal recording apparatus
    • 数字信号记录装置
    • US06215950B1
    • 2001-04-10
    • US08708703
    • 1996-09-05
    • Chiyoko MatsumiTatsuro JuriAkira IketaniMakoto GotoSusumu YamaguchiHideki OtakaShigeru AwamotoMasakazu NishinoTakao KashiroTadashi Ono
    • Chiyoko MatsumiTatsuro JuriAkira IketaniMakoto GotoSusumu YamaguchiHideki OtakaShigeru AwamotoMasakazu NishinoTakao KashiroTadashi Ono
    • H04N5783
    • H04N9/8047H04N5/78266H04N9/7921H04N9/8063H04N9/8205
    • The digital signal recording apparatus of the invention for recording a video signal on a recording medium, includes: a mode setting section for setting a recording mode, the recording mode being one of a standard recording mode and a long-time recording mode having a longer recording time than that of the standard recording mode; a sampling section for sampling the video signal at a sampling number corresponding to the recording mode set by the mode setting section, the sampling number when the selected recording mode is the long-time recording mode being smaller than the sampling number when the selected recording mode is the standard recording mode; a coding section for coding the video signal sampled by the sampling section at a compression rate corresponding to the recording mode set by the mode setting section, the compression rate when the selected recording mode is the long-time recording mode being higher than the compression rate when the selected recording mode is the standard recording mode; and a recording section for recording the video signal coded by the coding section on a recording medium.
    • 本发明的用于在记录介质上记录视频信号的数字信号记录装置包括:模式设置部分,用于设置记录模式,记录模式是标准记录模式和长时间记录模式之一 录制时间高于标准录音模式; 采样部分,用于以对应于由模式设置部分设置的记录模式的采样数采样视频信号,当所选择的记录模式是长时间记录模式时,当所选择的记录模式 是标准录音模式; 编码部分,用于以与由模式设置部分设置的记录模式对应的压缩率对采样部分采样的视频信号进行编码,当所选择的记录模式是长时间记录模式时的压缩率高于压缩率 当所选择的记录模式是标准记录模式时; 以及记录部分,用于将由编码部分编码的视频信号记录在记录介质上。