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    • 45. 发明申请
    • LOCAL OSCILLATOR
    • 本地振荡器
    • US20120062289A1
    • 2012-03-15
    • US13230041
    • 2011-09-12
    • Yoshinori SuzukiHiroyuki KobayashiJun Deguchi
    • Yoshinori SuzukiHiroyuki KobayashiJun Deguchi
    • H03L7/08
    • H03L7/18H03L2207/50
    • A local oscillator of an embodiment includes a digitally-controlled oscillator, a phase data generator, a subtractor, a loop filter, a multiplier, and a coefficient calculator. The digitally-controlled oscillator variably controls an oscillation frequency of an oscillation signal by using a first oscillator control value. The oscillation frequency is equal to a product of the first oscillator control value multiplied by an amount of change in the oscillation frequency per unit first oscillator control value. Set frequency data is calculated by dividing a set frequency by a reference frequency of a reference signal. The multiplier outputs the first oscillator control value obtained by multiplying a normalized control value from the loop filter by a first coefficient. The coefficient calculator divides, by the set frequency data, the first oscillator control value which makes the oscillation frequency roughly equal to the set frequency, and sets the quotient as a new first coefficient in the multiplier.
    • 实施例的本地振荡器包括数字控制振荡器,相位数据发生器,减法器,环路滤波器,乘法器和系数计算器。 数字控制振荡器通过使用第一振荡器控制值来可变地控制振荡信号的振荡频率。 振荡频率等于第一振荡器控制值乘以每单位第一振荡器控制值的振荡频率的变化量的乘积。 通过将设定频率除以参考信号的参考频率来计算设定频率数据。 乘法器输出通过将来自环路滤波器的归一化控制值乘以第一系数而获得的第一振荡器控制值。 系数计算器通过设定频率数据将使振荡频率大致等于设定频率的第一振荡器控制值分频,并将乘数设置为乘法器中的新的第一系数。
    • 46. 发明申请
    • MOVING IMAGE ENCODING AND DECODING SYSTEM
    • 移动图像编码和解码系统
    • US20110222601A1
    • 2011-09-15
    • US13051768
    • 2011-03-18
    • Yoshinori SuzukiChoong Seng BoonJens-Rainer OhmMathias WienAleksandar StojanovicThiow Keng Tan
    • Yoshinori SuzukiChoong Seng BoonJens-Rainer OhmMathias WienAleksandar StojanovicThiow Keng Tan
    • H04N7/26
    • H04N19/573H04N19/51H04N19/593
    • A moving image encoding and decoding system reduces compressed moving picture data amounts by producing a prediction signal suitable for moving pictures including dynamic textures. The system includes a moving picture encoding device 1 that includes a block divider 102 receiving a target pixel signal, a prediction signal generator 103 producing a prediction signal, a subtractor 105 producing a differential signal, and a transformer 106 and quantizer 107 producing an encoded differential signal. The encoding device 1 also includes an inverse quantizer 108 and inverse transformer 109 producing a decoded differential signal, an adder 110 producing a reproduction signal, a frame memory 104 storing the reproduction signal as a reference image, and a reference image generator 113. The reference image generator 113 may obtain an observation matrix C by using a pre-existing reference image. The encoding system 1 produces a new reference image y″t+5 based on the observation matrix C and a state vector xt+5, and stores the new reference image in the frame memory 104. The prediction signal generator 103 produces the prediction signal by using at least the new reference image y″t+5.
    • 运动图像编码和解码系统通过产生适合于包括动态纹理的运动图像的预测信号来减少压缩的运动图像数据量。 该系统包括运动图像编码装置1,其包括接收目标像素信号的块分割器102,产生预测信号的预测信号发生器103,产生差分信号的减法器105以及产生编码差分的变换器106和量化器107 信号。 编码装置1还包括产生解码差分信号的逆量化器108和逆变换器109,产生再现信号的加法器110,存储再现信号作为参考图像的帧存储器104和参考图像生成器113。 图像生成器113可以通过使用预先存在的参考图像来获得观察矩阵C. 编码系统1基于观察矩阵C和状态向量xt + 5产生新的参考图像y“t + 5,并将新的参考图像存储在帧存储器104中。预测信号发生器103通过 至少使用新的参考图像y“t + 5。