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    • 2. 发明授权
    • Multi-point motion picture encoding and decoding apparatus
    • 多点运动图像编解码装置
    • US5568184A
    • 1996-10-22
    • US440710
    • 1995-05-15
    • Koichi ShibataTaizo Kinoshita
    • Koichi ShibataTaizo Kinoshita
    • H04N7/15H04N7/26H04N7/50H04N21/2365H04N21/434
    • H04N21/4347H04N19/423H04N19/61H04N21/2365H04N7/15H04N7/152H04N19/30Y10S370/902
    • A display system for displaying a plurality of video windows on a display screen. A receiving element is included for receiving video data packets from a plurality of video sources in a time sharing manner, each of the video data packets including: coded video information for representing a partial image contained within one of a plurality of blocks constituting a video frame; attribute information for indicating at least a location of a block corresponding thereto within the video frame; and identification information of the video source. A decoder element is connected to the receiving element for decoding the coded video information extracted from each of the video data packets and for outputting a partial image corresponding to one of the blocks in the video frame. A set of frame memories are included for assembling partial images into video frames, each of the frame memories having a plurality of window areas located in a predetermined layout defined therein, and a set of the window areas each located at a same location within respective frame memories being associated with a same video source with respect to each other. A writing element is included for writing each partial image derived from the decoder element into one of the window areas within one of the frame memories which is specified in accordance with the identification information extracted from a video data packet related to the partial image and a utilization status of the window areas. Finally, an outputting element is included for selectively outputting contents of the frame memories on a display screen by changing over the frame memories depending upon a display position on the display screen thereby to present a plurality of video frames at a plurality of window areas on the display screen.
    • 一种用于在显示屏幕上显示多个视频窗口的显示系统。 包括接收元件,用于以时分方式从多个视频源接收视频数据分组,每个视频数据分组包括:用于表示包含在构成视频帧的多个块之一内的部分图像的编码视频信息 ; 属性信息,用于指示视频帧内至少与其对应的块的位置; 和视频源的识别信息。 解码器元件连接到接收元件,用于对从每个视频数据包提取的编码视频信息进行解码,并输出与视频帧中的一个块对应的部分图像。 包括一组帧存储器,用于将部分图像组合成视频帧,每个帧存储器具有位于其中定义的预定布局中的多个窗口区域,以及一组各自位于相应帧内的相同位置处的窗口区域 存储器相对于彼此与相同的视频源相关联。 包括写入元件,用于将从解码器元件导出的每个部分图像写入根据与部分图像相关的视频数据包提取的识别信息指定的一个帧存储器中的一个窗口区域中,以及利用 窗口区域的状态。 最后,包括输出元件,用于通过根据显示屏幕上的显示位置改变帧存储器来在显示屏上选择性地输出帧存储器的内容,从而在多个窗口区域上呈现多个视频帧 显示屏。
    • 4. 发明授权
    • Multi-point visual communication system
    • 多点视觉通信系统
    • US5617135A
    • 1997-04-01
    • US299633
    • 1994-09-02
    • Fumio NodaKoichi ShibataTaizo Kinoshita
    • Fumio NodaKoichi ShibataTaizo Kinoshita
    • H04N7/15H04N7/14H04N7/52H04N7/60H04N7/10
    • H04N7/147H04N19/61H04N19/80H04N19/82H04N21/236H04N21/434H04N7/52
    • A multi-point visual communication system which includes an adaptive filter part for controlling a spatial frequency characteristic of a video signal, a filter selector for selecting a video quality to be transmitted from its own site on the basis of integrated requests received from sites, and a filter control for adaptively controlling a filter characteristic taking both of a video information quantity and situations of a telecommunication network into consideration, and wherein a video signal processed by the adaptive filter part is subjected to an encoding operation and then transmitted to the telecommunication network. Thereby, the video quality can be selected according to users' requests, and the video quality of the multi-point visual communication can be improved without incurring an excessive increase of a video information quantity. Further, through the video signal processing taking both the video characteristic and the telecommunication network situations into consideration, a comparatively high quality of video transmission can be realized when viewed from an information quantity.
    • 一种多点视觉通信系统,包括:用于控制视频信号的空间频率特性的自适应滤波器部分;滤波器选择器,用于根据从站点接收到的综合请求,从其自身站点中选择要发送的视频质量;以及 滤波器控制,用于考虑视频信息量和电信网络的情况自适应地控制滤波器特性,并且其中由自适应滤波器部分处理的视频信号进行编码操作,然后发送到电信网络。 因此,可以根据用户的请求选择视频质量,并且可以提高多点可视通信的视频质量,而不会导致视频信息量的过度增加。 此外,通过考虑视频特性和电信网络情况的视频信号处理,当从信息量观察时,可以实现较高质量的视频传输。
    • 7. 发明授权
    • Video signal transmitting method and equipment of the same
    • 视频信号传输方法和设备相同
    • US5159452A
    • 1992-10-27
    • US604638
    • 1990-10-22
    • Taizo KinoshitaYoshizumi Eto
    • Taizo KinoshitaYoshizumi Eto
    • H04N1/32H04B14/04H04L12/70H04L12/951H04N1/40H04N7/60H04N19/89
    • H04N21/434H04N19/85H04N19/88H04N19/89H04N21/236
    • A video signal transmitting method comprising: a sending method including the steps of: dividing an analog video signal in a unit corresponding to integer times of a number of bits composing an information field of one packet in packet transmission and converting into a digital video signal, forming a digitalized video signal into a plurality of packets, forming a plurality of packets into a first packet block in M lines.times.N columns, adding an error correction code which corrects a longitudinal error of data in a first packet block as a second packet block in P lines.times.N columns in an (M+1)th line and thereafter, and sending a packet; and a receiving method including the steps of: recomposing the same packet block as that composed on a sending side from plurality of received packets, recovering a video signal with packet loss information from an exchange and an error correction code formed into a packet, and regenerating an analog video signal from a digital video signal after recovery.
    • 一种视频信号发送方法,包括:发送方法,包括以下步骤:将分组发送中组成一个分组的信息字段的位数的整数倍的整数倍的模拟视频信号分割成数字视频信号, 将数字化视频信号形成多个分组,将多个分组形成为M行×N列中的第一分组块,添加纠错码,其将第一分组块中的数据的纵向误差校正为第二分组块,其中P (M + 1)行中的linesxN列,之后发送分组; 以及接收方法,包括以下步骤:从多个接收到的分组重构与在发送侧构成的分组块相同的分组块,从交换机恢复分组丢失信息的视频信号和形成分组的纠错码,并重新生成 来自恢复后的数字视频信号的模拟视频信号。
    • 9. 发明授权
    • Digital data transmission system
    • 数字数据传输系统
    • US5959677A
    • 1999-09-28
    • US989783
    • 1997-12-12
    • Akira DateTaizo Kinoshita
    • Akira DateTaizo Kinoshita
    • H04N7/08H04H20/00H04H20/74H04L12/56H04L12/70H04N7/081H04N7/24H04N7/50H04N7/52H04N7/58H04Q3/00H04N7/04
    • H04H20/74H04N19/115H04N19/182H04N19/423H04N19/61H04N21/23655H04N19/146H04N19/152
    • In a digital data transmission system of the present invention, the total transmission rate which changes with the passage of time in a plurality of video/audio signals multiplexed with a plurality of digital data on a transmission path is monitored without allocation of individual transmission rates to the plurality of video/audio signals so that encoders are controlled only when the total transmission rate exceeds the maximum transmission rate. Further, the plurality of digital data are transmitted within a range of the residual transmission rate obtained by subtracting the total transmission rate of the plurality of video/audio signals from the maximum transmission rate in the transmission path, whereby real-time transmission of video/audio signals and transmission of digital data can be made consistent with each other on one transmission path without reduction in video/audio quality of the transmitted video/audio signals.
    • 在本发明的数字数据传输系统中,监视在传输路径上与多个数字数据复用的多个视频/音频信号中随时间变化的总传输速率,而不分配单独的传输速率 多个视频/音频信号,使得编码器仅在总传输速率超过最大传输速率时才被控制。 此外,在通过从传输路径中的最大传输速率减去多个视频/音频信号的总传输速率而获得的剩余传输速率的范围内传输多个数字数据,从而实时传输视频/ 音频信号和数字数据的传输可以在一个传输路径上彼此一致,而不会降低所传输的视频/音频信号的视频/音频质量。