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    • 1. 发明授权
    • Frame-to-frame coding system
    • 框架到框架编码系统
    • US4051530A
    • 1977-09-27
    • US624021
    • 1975-10-20
    • Hideo KurodaFumio Kanaya
    • Hideo KurodaFumio Kanaya
    • G06T9/00H04N7/32H04N7/36H04N7/12
    • H04N19/124H04N19/50H04N19/503
    • An input video signal is fed to a substracter wherein a difference is taken between the input and the output from a frame memory to provide a difference signal, the magnitude of which is controlled by a magnitude adjuster. The controlled output is then fed to a threshold circuit, from which a significant difference signal is derived which has a magnitude above a given level. The significant difference signal is quantized by an encoder into a code having a reduced number of bits as compared with the inputted significant difference signal. The quantized code is written into a buffer memory, and is read out therefrom at a uniform bit rate to a transmission line. A sum of a signal indicative of the representative level of the quantized code from the encoder and the output of the frame memory is formed in an adder, and the sum signal is written into the frame memory and read out subsequently or after one frame. The occupancy of the buffer memory is detected to provide a control over the magnitude adjuster in accordance with the detected value so as to prevent an overflow from the buffer memory. A signal to refresh the frame memory located on the receiving side is transmitted by writing the output of the adder into the buffer memory after switching from the output of the encoder to the output of the adder.
    • 3. 发明授权
    • Water-decomposable non-woven fabric
    • 水解性无纺布
    • US5384189A
    • 1995-01-24
    • US9760
    • 1993-01-27
    • Hideo KurodaYasunori Sakamoto
    • Hideo KurodaYasunori Sakamoto
    • A61F13/15D04H1/58A61F13/20B32B27/00D02G3/00
    • A61F13/15252D04H1/587D04H1/64Y10S428/913Y10T428/2922Y10T442/627Y10T442/635
    • A water-decomposable non-woven fabric comprises a water-dispersible fiber layer, each fiber of which is bound with one another using a water-soluble binder comprising an unsaturated carboxylic acid/unsaturated carboxylic acid ester copolymer in which 1 to 60 mole % of the repeating units derived from the unsaturated carboxylic acid is in the form of a salt and which is soluble in tap water but is insoluble in an aqueous solution containing not less than 0.5% by weight of a neutral inorganic salt comprising a monovalent ion; the water-dispersible fiber layer being composed of a mixture of 40 to 90% by weight of fibers having a crimp number of 19/inch or less, 10 to 60% by weight of fibers having a crimp number of 20/inch to 25/inch, and not more than 10% by weight of fibers having a crimp number of 26/inch or more; and a content of the binder in the non-woven fabric being 1 to 30% by weight relative to the total weight of the non-woven fabric. The non-woven fabric has a good feeling (high softness and good touch) and sufficient mechanical strength, and can be easily broken and dispersed by throwing into a large amount of water.
    • 水解性无纺布包括水分散性纤维层,其纤维彼此结合,使用包含不饱和羧酸/不饱和羧酸酯共聚物的水溶性粘合剂,其中1〜60摩尔% 衍生自不饱和羧酸的重复单元为盐的形式,其可溶于自来水,但不溶于含有不少于0.5重量%的包含一价离子的中性无机盐的水溶液; 水分散性纤维层由40〜90重量%的卷曲数为19个/英寸以下的纤维,10〜60重量%的卷曲数为20 / inch〜25 / 英寸,不超过10重量%的卷曲数为26个/英寸以上的纤维; 无纺布中的粘合剂的含量相对于无纺布的总重量为1〜30重量%。 无纺布具有良好的感觉(柔软度高,触感好)和机械强度充分,并且通过投入大量的水容易地破碎和分散。
    • 4. 发明授权
    • Intraframe coding and decoding equipment for video signals of different
quality
    • 帧内编码和解码设备,视频信号质量不同
    • US4603347A
    • 1986-07-29
    • US489311
    • 1983-04-28
    • Hideo KurodaNaoki Mukawa
    • Hideo KurodaNaoki Mukawa
    • H04N7/62H04N11/04
    • H04N21/4302H04N19/593H04N21/242
    • Intraframe coding and decoding equipment are used in a communication network for digital video signals. Video signal sources which have various frequency deviations are transmitted by the communication network. Each of the intraframe coding and decoding equipment items has a locked sampling coding algorithm which is suitable for an input video signal with high frequency precision and a nonlocked sampling coding algorithm which is suitable for an input video signal with low frequency precision. It is determined whether or not the frequency precision (i.e., the frequency deviation of the sync signal) falls within a predetermined range. One of the coding algorithms is selected in accordance with a detection result. The coding algorithm can be selected in accordance with a decoding algorithm of a receiving-side equipment. Switching of the coding algorithms is performed simultaneously with switching of the clock signals of the locked and unlocked sampling clocks.
    • 帧内编码和解码设备用于数字视频信号的通信网络。 具有各种频率偏差的视频信号源由通信网络发送。 每个帧内编码和解码设备项都具有锁定采样编码算法,该算法适用于具有高频精度的输入视频信号和适用于低频精度的输入视频信号的非锁定采样编码算法。 确定频率精度(即,同步信号的频率偏差)是否在预定范围内。 根据检测结果选择编码算法之一。 可以根据接收侧设备的解码算法选择编码算法。 编码算法的切换与锁定和解锁的采样时钟的时钟信号的切换同时执行。
    • 10. 发明授权
    • Interframe coding method and apparatus therefor
    • 帧间编码方法及其装置
    • US4591909A
    • 1986-05-27
    • US602405
    • 1984-04-20
    • Hideo KurodaNaoki Mukawa
    • Hideo KurodaNaoki Mukawa
    • G06T9/00H04N7/32H04N7/36H04N7/137
    • H04N19/152H04N19/503H04N19/51H04N19/50
    • An interframe coding method performs predictive coding by dividing an input video signal into blocks each of which has a predetermined size, wherein a second memory for storing background data is arranged in addition to a first memory for storing coded picture data, and a block having a minimum prediction error among blocks read out from the first and second memories is detected as an optimal predictive block for every block of the input video signal, whereby predictive coding is performed by using the optimal predictive block. According to this method, after a moving element in the picture is displaced, the background area is monitored by using as predictive value data stored in the second memory. A prediction error becomes small, and coding efficiency is improved. In particular, motion compensated interframe coding is performed in addition to detection of the background area, thereby further improving the coding efficiency. The background image stored in the second memory is properly updated in accordance with the input video signal.
    • 帧间编码方法通过将输入视频信号划分为具有预定大小的块来执行预测编码,其中除了用于存储编码图像数据的第一存储器之外还布置有用于存储背景数据的第二存储器,以及具有 检测从第一和第二存储器读出的块中的最小预测误差作为输入视频信号的每个块的最佳预测块,从而通过使用最佳预测块来执行预测编码。 根据该方法,在图像中的移动元件移位之后,通过使用存储在第二存储器中的预测值数据来监视背景区域。 预测误差变小,编码效率提高。 特别地,除了背景区域的检测之外,还执行运动补偿帧间编码,从而进一步提高编码效率。 存储在第二存储器中的背景图像根据输入的视频信号被适当地更新。