公开(公告)号：US5526024A

公开(公告)日：1996-06-11

申请号：US289987

申请日：1994-08-12

申请人： Robert D. Gaglianello ,  Howard P. Katseff

发明人： Robert D. Gaglianello ,  Howard P. Katseff

IPC分类号： G06F3/14 ,  G09G5/39 ,  G09G5/393 ,  G09G5/00

CPC分类号： G06F3/14 ,  G09G5/393 ,  G06F3/1454 ,  G09G2340/0435

摘要： Video image quality is preserved in an asynchronous network by providing a synchronizing arrangement in which the input of video data from an asynchronous network to a video data buffer is synchronized with the reading of information from the video data buffer. Synchronizing video data transfers to and from a video data buffer ensures that video data from only a single frame from a source is displayed on a display monitor at one time, thus maintaining image quality. Furthermore, multiple video data streams from several asynchronous sources can be displayed simultaneously on a single display screen using the synchronization technique. The synchronization arrangement synchronizes receipt of the different data streams into the frame buffer with the output of data from the frame buffer to the display screen.

摘要翻译： 视频图像质量通过提供同步装置保留在异步网络中，其中从异步网络到视频数据缓冲器的视频数据的输入与从视频数据缓冲器读取信息同步。 将视频数据传输与视频数据缓冲器同步，确保来自源的只一帧的视频数据一次显示在显示监视器上，从而保持图像质量。 此外，使用同步技术，可以在单个显示屏上同时显示来自多个异步源的多个视频数据流。 同步装置使得从帧缓冲器到显示屏的数据输出将不同数据流的接收同步到帧缓冲器中。

公开(公告)号：US5822537A

公开(公告)日：1998-10-13

申请号：US628391

申请日：1996-04-05

申请人： Howard P. Katseff ,  Bethany Scott Robinson

发明人： Howard P. Katseff ,  Bethany Scott Robinson

IPC分类号： G06F17/30 ,  H04L12/56 ,  H04L29/06 ,  H04N7/15 ,  H04N7/32 ,  H04N21/234 ,  H04N21/2368 ,  H04N21/24 ,  H04N21/2662 ,  H04N21/434 ,  H04N21/44 ,  H04N21/6332 ,  H04N21/6377 ,  H04N21/654 ,  H04N21/658 ,  G06F15/16

CPC分类号： H04L65/80 ,  G06F17/30017 ,  H04L29/06 ,  H04L47/10 ,  H04L47/263 ,  H04L47/30 ,  H04L65/4084 ,  H04N19/152 ,  H04N21/23614 ,  H04N21/2368 ,  H04N21/2401 ,  H04N21/2662 ,  H04N21/4307 ,  H04N21/4316 ,  H04N21/4341 ,  H04N21/4348 ,  H04N21/47217 ,  H04N21/654 ,  H04N21/6587 ,  H04N7/15 ,  H04L29/06027 ,  H04N19/50 ,  Y02B60/31

摘要： Disclosed is a networked multimedia information system which may be utilized to record, store and distribute multimedia presentations together with any supplemental materials that may be referenced during the presentation. The recorded presentation, together with the associated supplemental materials, may be simultaneously presented on a display containing two separate viewing windows. The effects of network congestion are minimized by prefetching audio and video data for storage in audio and video buffers. An adaptive control algorithm compensates for network congestion by dynamically varying the rate at which video frames are retrieved over the network, in response to network traffic conditions. The audio playback speed is reduced if the audio data does not arrive fast enough over the network to maintain the desired size of the audio buffer after the amount of video data transmitted across the network has been reduced to a minimum value.

摘要翻译： 公开了一种联网多媒体信息系统，其可以用于在呈现期间可以参考的任何补充材料与多媒体呈现一起记录，存储和分发。 记录的演示文稿以及相关的补充材料可以同时呈现在包含两个单独的观看窗口的显示器上。 通过预取音频和视频数据来存储音频和视频缓冲区，可以最大限度地减少网络拥塞的影响。 响应于网络流量条件，自适应控制算法通过动态地改变通过网络检索视频帧的速率来补偿网络拥塞。 如果在通过网络传输的视频数据量已经减少到最小值之后，如果音频数据在网络上没有足够快地到达，以保持音频缓冲器的期望大小，则音频播放速度降低。

公开(公告)号：US5715404A

公开(公告)日：1998-02-03

申请号：US628391

申请日：1996-04-05

申请人： Howard P. Katseff ,  Bethany Scott Robinson

发明人： Howard P. Katseff ,  Bethany Scott Robinson

IPC分类号： G06F17/30 ,  H04L12/56 ,  H04L29/06 ,  H04N7/15 ,  H04N7/32 ,  H04N21/234 ,  H04N21/2368 ,  H04N21/24 ,  H04N21/2662 ,  H04N21/434 ,  H04N21/44 ,  H04N21/6332 ,  H04N21/6377 ,  H04N21/654 ,  H04N21/658 ,  G06F15/10

CPC分类号： H04L65/80 ,  G06F17/30017 ,  H04L29/06 ,  H04L29/06027 ,  H04L47/10 ,  H04L47/263 ,  H04L47/30 ,  H04L65/4084 ,  H04N7/15 ,  H04N19/152 ,  H04N19/50 ,  H04N21/23614 ,  H04N21/2368 ,  H04N21/2401 ,  H04N21/2662 ,  H04N21/4307 ,  H04N21/4316 ,  H04N21/4341 ,  H04N21/4348 ,  H04N21/47217 ,  H04N21/654 ,  H04N21/6587 ,  Y02D50/10

摘要： Disclosed is a networked multimedia information system which may be utilized to record, store and distribute multimedia presentations together with any supplemental materials that may be referenced during the presentation. The recorded presentation, together with the associated supplemental materials, may be simultaneously presented on a display containing two separate viewing windows. The effects of network congestion are minimized by prefetching audio and video data for storage in audio and video buffers. An adaptive control algorithm compensates for network congestion by dynamically varying the rate at which video frames are retrieved over the network, in response to network traffic conditions. The audio playback speed is reduced if the audio data does not arrive fast enough over the network to maintain the desired size of the audio buffer after the amount of video data transmitted across the network has been reduced to a minimum value.

公开(公告)号：US5710591A

公开(公告)日：1998-01-20

申请号：US495747

申请日：1995-06-27

申请人： Richard F. Bruno ,  David C. Gibbon ,  Howard P. Katseff ,  Robert E. Markowitz ,  Bethany S. Robinson ,  Behzad Shahraray ,  Peter H. Stuntebeck ,  Roy P. Weber

发明人： Richard F. Bruno ,  David C. Gibbon ,  Howard P. Katseff ,  Robert E. Markowitz ,  Bethany S. Robinson ,  Behzad Shahraray ,  Peter H. Stuntebeck ,  Roy P. Weber

IPC分类号： H04M3/56 ,  H04M11/00 ,  H04N7/14 ,  H04N7/15

CPC分类号： H04M3/42221 ,  H04M3/567 ,  H04N7/142 ,  H04N7/147 ,  H04N7/15 ,  H04N7/152 ,  H04M2201/41

摘要： A method and apparatus for recording and indexing audio information exchanged during an audio conference call, or video, audio and data information exchanged during a multimedia conference. For a multimedia conference, the method and apparatus utilize the voice activated switching functionality of a multipoint control unit (MCU) to provide a video signal, which is input to the MCU from a workstation from which an audio signal is detected, to each of the other workstations participating in the conference. A workstation and/or participant-identifying signal generated by the multipoint control unit is stored, together or in correspondence with the audio signal and video information, for subsequent ready retrieval of the stored multimedia information. For an audio conference, a computer is connected to an audio bridge for recording the audio information along with an identification signal for correlating each conference participant with that participant's statements.

摘要翻译： 一种用于在音频电话会议期间交换的音频信息或在多媒体会议期间交换的视频，音频和数据信息的记录和索引的方法和装置。 对于多媒体会议，该方法和装置利用多点控制单元（MCU）的语音激活切换功能来提供视频信号，该视频信号从检测到音频信号的工作站输入到MCU 参加会议的其他工作站。 由多点控制单元生成的工作站和/或参与者识别信号一起或与音频信号和视频信息对应地存储，以便随后检索存储的多媒体信息。 对于音频会议，计算机连接到音频桥，用于记录音频信息以及用于使每个会议参与者与该参与者的语句相关联的识别信号。