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90 条记录 (耗时 0.035 秒)

    High efficiency encoding apparatus
    81.
    发明授权
    High efficiency encoding apparatus 失效
    高效编码装置

    公开(公告)号：US5543845A

    公开(公告)日：1996-08-06

    申请号：US430280

    申请日：1995-04-28

    申请人： Yoshinori Asamura ,  Yoshiko Hatano ,  Ken Onishi ,  Takashi Shiroshita

    发明人： Yoshinori Asamura ,  Yoshiko Hatano ,  Ken Onishi ,  Takashi Shiroshita

    IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/50

    CPC分类号： H04N19/649 ,  H04N19/186 ,  H04N19/60 ,  H04N19/61 ,  H04N19/62 ,  H04N19/645 ,  H04N19/13 ,  H04N19/91

    摘要： An encoding apparatus which structures a band-divided digital image signal into three-dimensional blocks each having a plurality of pixels, discriminates each three-dimensional block between a moving image block and a static image block, and, in the case of a static image block, encodes only the three-dimensional blocks in the lower frequency bands while dropping the three-dimensional blocks in the higher frequency bands. However, of moving image blocks, blocks having a large pixel variance value are encoded as effective image blocks. Also, different size weightings are performed to transform coefficients depending on whether the block is discriminated as a moving image block or a static image block. Furthermore, shuffling is performed on a group of moving image blocks and a group of static image blocks independently of each other, and the transform coefficients for the static image blocks are quantized after quantizing all transform coefficients for the moving image blocks.

    摘要翻译： 将分割后的数字图像信号构成为具有多个像素的三维块的编码装置，判别运动图像块和静止图像块之间的每个三维块，并且在静态图像的情况下 块，仅在较低频带中编码三维块，同时丢弃较高频带中的三维块。 然而，对于运动图像块，具有大像素方差值的块被编码为有效图像块。 此外，根据块被区分为运动图像块还是静态图像块，执行不同的大小加权来变换系数。 此外，对一组运动图像块和一组静态图像块彼此独立地执行混洗，并且在对运动图像块的所有变换系数进行量化之后量化静态图像块的变换系数。

    Variable length coding method using different bit assigning schemes for luminance and chrominance signals
    82.
    发明授权
    Variable length coding method using different bit assigning schemes for luminance and chrominance signals 失效
    对于亮度和色度信号使用不同的位分配方案的可变长度编码方法

    公开(公告)号：US5513008A

    公开(公告)日：1996-04-30

    申请号：US223838

    申请日：1994-04-06

    申请人： Yukari Arano ,  Ken Onishi

    发明人： Yukari Arano ,  Ken Onishi

    IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N9/804 ,  H04N9/806 ,  H04N9/888 ,  H04N9/79 ,  H03M7/40 ,  H04N5/78 ,  H04N7/12

    CPC分类号： H04N9/888 ,  H04N9/8047 ,  H04N9/8063 ,  H04N19/13 ,  H04N19/60 ,  H04N19/91

    摘要： A variable length coding method designed to assign a different number of coding bits in accordance with the information content a sample holds when an analog signal such as a television signal or the like is converted to a digital signal. An assigning method of coding bits used to a luminance signal is different from that used to a chrominance signal. A variable length coding method is further capable of selecting an optimum assigning method in accordance with contents of an original signal from a plurality of determined assigning methods of coding bits. The data related to the plurality of assigning methods of coding bits is recorded on a medium after it is added to a coded digital signal.

    摘要翻译： 一种可变长度编码方法，被设计为当诸如电视信号等的模拟信号被转换为数字信号时，根据样本保持的信息内容分配不同数量的编码比特。 用于亮度信号的编码比特的分配方法不同于用于色度信号的比特分配方法。 可变长度编码方法还能够根据来自多个确定的编码比特分配方法的原始信号的内容来选择最佳分配方法。 与编码比特的多个分配方法相关的数据在被添加到编码数字信号之后被记录在介质上。

    Apparatus for digitally recording analog video signals in ordinary and long mode
    85.
    发明授权
    Apparatus for digitally recording analog video signals in ordinary and long mode 失效
    用于以普通和长模式数字记录模拟视频信号的装置

    公开(公告)号：US5430579A

    公开(公告)日：1995-07-04

    申请号：US230155

    申请日：1994-04-19

    申请人： Ken Onishi ,  Hidenori Banjyo ,  Yukari Arano

    发明人： Ken Onishi ,  Hidenori Banjyo ,  Yukari Arano

    IPC分类号： H04N5/782 ,  H04N9/808

    CPC分类号： H04N9/8081 ,  H04N5/782 ,  H04N9/808

    摘要： A digital video recording system for digitizing analog video signals and recording the digital signals on video tape and for reading digital video signals from video tape and producing an analog video signal. The recording system comprises an A/D converter, a data compressor for compressing digital video signals at a data rate of 1/N (N an integer greater than 1), an encoding and modulating mechanism that provides digital data segments, and a control mechanism for controlling the system such that recording data for one field, which is normally recorded in M tracks (M: an integer greater than N) in ordinary recording mode, is recorded in about M/N tracks in a long recording mode.

    摘要翻译： 一种数字视频记录系统，用于将模拟视频信号数字化并在数字磁带上记录数字信号，并从视频磁带读取数字视频信号并产生模拟视频信号。 记录系统包括A / D转换器，用于以1 / N（N大于1的整数）的数据速率压缩数字视频信号的数据压缩器，提供数字数据段的编码和调制机制，以及控制机制 用于控制系统，使得在通常记录模式下通常记录在M个磁道（M：大于N的整数）中的一个场的记录数据以长记录模式被记录在大约M / N个磁道中。

    PCM Record reproducer
    88.
    发明授权
    PCM Record reproducer 失效
    PCM录音再现器

    公开(公告)号：US4423441A

    公开(公告)日：1983-12-27

    申请号：US182055

    申请日：1980-08-28

    申请人： Minoru Ozaki ,  Ken Onishi ,  Kunimaro Tanaka

    发明人： Minoru Ozaki ,  Ken Onishi ,  Kunimaro Tanaka

    IPC分类号： G11B20/18 ,  G11B27/032 ,  G11B27/038 ,  G11B27/28 ,  G11B27/02 ,  G11B5/00

    CPC分类号： G11B20/1809 ,  G11B27/032 ,  G11B27/038 ,  G11B27/28 ,  G11B2220/90 ,  G11B2220/913

    摘要： A PCM record reproducer comprises a coder circuit for forming PCM signals by adding error detection codes to data signals in a predetermined pattern; a splice detection circuit for determining a splice point of a magnetic tape by finding inconsistency of the detected result of said error detection code depending upon said PCM signals read-out from said magnetic tape in which said PCM signals are recorded; and an editing circuit for editing said PCM signals when the splice point is determined by said splice detector circuit.

    摘要翻译： PCM记录再现器包括一个编码器电路，用于通过以预定的模式将错误检测码加到数据信号上来形成PCM信号; 根据从记录有所述PCM信号的所述磁带读出的所述PCM信号，通过发现所述检错码的检测结果不一致来确定磁带的拼接点的拼接检测电路; 以及编辑电路，用于当由所述拼接检测器电路确定拼接点时，编辑所述PCM信号。

    Apparatus for reproducing PCM magnetic recording tape
    89.
    发明授权
    Apparatus for reproducing PCM magnetic recording tape 失效
    用于再现PCM磁记录带的装置

    公开(公告)号：US4364096A

    公开(公告)日：1982-12-14

    申请号：US168553

    申请日：1980-07-14

    申请人： Minoru Ozaki ,  Ken Onishi

    发明人： Minoru Ozaki ,  Ken Onishi

    IPC分类号： G11B20/10 ,  G11B27/032 ,  G11B27/02 ,  G11B5/00

    CPC分类号： G11B27/032 ,  G11B20/10527

    摘要： An apparatus for reproducing voice signals from a PCM magnetic recording tape which is equipped with a discontinue waveform calibrator which comprises a control signal generator for detecting an edited part from PCM signal rows reproduced from the magnetic tape and for transmitting a control signal; a first memorizing means for memorizing at least one word part of the PCM signal rows which are sequentially imputted; a second memorizing means for memorizing specific words of the PCM signal rows overflowed from the first memorizing means; a third memorizing means for memorizing at least one word part of the PCM signal rows overflowed from the memorizing means; a first weighing means for multiplying a gradually increasing weight from X0 to X1 to the memorized data of the first memorizing means upon receiving the control signal to output it; a second weighing means for multiplying a gradually decreasing weight from X1 to X0 to the memorized data of the third memorizing means upon receiving the control signal; an adder for summing gradually output signals of the first and second weighing means; and a switch for switching to receive as an input the PCM signal overflowed from the third memorizing means in the normal state and switching the PCM signal output from the adder into the decoder upon receiving the control signal.

    摘要翻译： 一种用于从PCM磁记录带再现语音信号的装置，其装有中断波形校准器，该中断波形校准器包括控制信号发生器，用于从从磁带再现的PCM信号行检测编辑的部分，并发送控制信号; 用于存储被顺序插入的PCM信号行的至少一个字部分的第一存储装置; 第二存储装置，用于存储从第一存储装置溢出的PCM信号行的特定字; 第三存储装置，用于存储从存储装置溢出的PCM信号行的至少一个字部分; 第一称重装置，用于在接收到控制信号以将其输出时，将逐渐增加的权重从X0到X1乘以第一存储装置的存储数据; 第二称重装置，用于在接收到所述控制信号时将逐渐减小的权重从X1乘以X0与所述第三存储装置的存储数据相乘; 加法器，用于逐渐输出第一和第二称重装置的输出信号; 以及用于切换以在正常状态下从第三存储装置溢出的PCM信号作为输入接收的开关，并且在接收到控制信号时将从加法器输出的PCM信号切换到解码器。