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    System and method for reliability transporting aural information across a network
    15.
    发明授权
    System and method for reliability transporting aural information across a network 失效
    通过网络可靠地传送口头信息的系统和方法

    公开(公告)号：US06298057B1

    公开(公告)日：2001-10-02

    申请号：US08634927

    申请日：1996-04-19

    申请人： Kenneth R. Guy ,  Jaswant R. Jain ,  Ishwar V. Jasuja ,  Michael W. Johnson ,  Albert Juandy ,  Simon S. Lam ,  Anthony Y. Lee ,  David Misunas ,  Jacques A. Roth

    发明人： Kenneth R. Guy ,  Jaswant R. Jain ,  Ishwar V. Jasuja ,  Michael W. Johnson ,  Albert Juandy ,  Simon S. Lam ,  Anthony Y. Lee ,  David Misunas ,  Jacques A. Roth

    IPC分类号： H04L1228

    CPC分类号： H04L12/2854 ,  H04J3/0632 ,  H04L1/0002 ,  H04L1/004 ,  H04M7/006 ,  Y02D50/10

    摘要： A system and method for transparently transmitting aural signals across a wide area network (WAN). The system of present invention is connected to one or more of a private branch exchange, a key telephone system, a telephone, a facsimile machine, and a modem, for example. In the case of voice transmission, a user places a telephone call using the same procedure that is used when placing a telephone call over a conventional public switched network. The aural signals are translated into a format that is compatible with the local area network (LAN) and the translated signals are transmitted to a router or a switch that connects the LAN to the WAN. The data is transmitted across the WAN to a router or switch coupled to a second LAN. The data is then sent to a destination central site unit or PC which translates the signal into a format that is compatible with the telephone system connected thereto. The present invention provides a voice quality that approaches, equals, or exceeds the voice quality of conventional telephone switched networks. This high voice quality is achieved by utilizing a high quality voice digitization algorithm, by ensuring a low maximum network delay, by dynamically compensating for variations in network delay, and by using a forward error correction technique that can recreate lost or delayed signals in a manner that recreates the signal so the lost signal is typically not detectable by a user.

    摘要翻译： 一种用于在广域网（WAN）上透明传输听觉信号的系统和方法。 本发明的系统例如连接到私人交换机，密钥电话系统，电话，传真机和调制解调器中的一个或多个。 在语音传输的情况下，用户使用与在常规公共交换网络上进行电话呼叫时所使用的相同的过程进行电话呼叫。 听觉信号被转换为与局域网（LAN）兼容的格式，并且转换的信号被传送到路由器或将LAN连接到WAN的交换机。 数据通过WAN传输到耦合到第二LAN的路由器或交换机。 然后将数据发送到目的地中心站点单元或PC，其将信号转换为与连接到其的电话系统兼容的格式。 本发明提供接近，等于或超过常规电话交换网络的语音质量的语音质量。 通过使用高质量的语音数字化算法，通过确保低的最大网络延迟，通过动态地补偿网络延迟的变化以及通过使用可以以一种方式重现丢失或延迟的信号的前向纠错技术来实现这种高的语音质量 这会重建信号，使得丢失的信号通常不被用户检测到。

    Remote learning system using a television signal and a network connection
    17.
    发明授权
    Remote learning system using a television signal and a network connection 失效
    远程学习系统使用电视信号和网络连接

    公开(公告)号：US5833468A

    公开(公告)日：1998-11-10

    申请号：US590640

    申请日：1996-01-24

    申请人： Frederick R. Guy ,  Ronald N. Roberts

    发明人： Frederick R. Guy ,  Ronald N. Roberts

    IPC分类号： G09B3/00 ,  G09B5/06 ,  G09B5/14 ,  G09B7/02 ,  H04N7/14 ,  H04N7/15 ,  H04N7/173 ,  G09B5/08

    CPC分类号： H04N7/147 ,  G09B5/065 ,  G09B5/14 ,  Y10S706/927

    摘要： A remote learning system combines on-line service information and remote user information with a television signal designed to be received by students using multimedia personal computers. The combined signal is then transmitted to all of the students at their personal computers. At each personal computer, the received signal is separated into its component parts by a VBI modem for display or control on/of the personal computers. Each personal computer is capable of communicating back to a main server over a network such as a public telephone network. A broadcasting facility integrates the information transmitted over the network from a single student with the television signal.

    摘要翻译： 远程学习系统将在线服务信息和远程用户信息与设计为使用多媒体个人计算机的学生接收的电视信号相结合。 然后将组合的信号传送给个人计算机上的所有学生。 在每个个人计算机上，所接收的信号被VBI调制解调器分离成其组成部分，以在个人计算机上进行显示或控制。 每个个人计算机能够通过诸如公共电话网络的网络与主服务器通信。 广播设施将来自单个学生的通过网络发送的信息与电视信号相集成。

    System for transmitting and receiving aural information and modulated data
    18.
    发明授权
    System for transmitting and receiving aural information and modulated data 失效
    发送和接收农村信息和调制数据的系统

    公开(公告)号：US5187591A

    公开(公告)日：1993-02-16

    申请号：US645113

    申请日：1991-01-24

    申请人： Kenneth R. Guy ,  Andrew M. Kameya ,  Herbert M. Wildfeuer

    发明人： Kenneth R. Guy ,  Andrew M. Kameya ,  Herbert M. Wildfeuer

    IPC分类号： H04L29/10 ,  H04L27/00 ,  H04M11/00 ,  H04M11/06 ,  H04N1/00 ,  H04Q11/04

    CPC分类号： H04M11/068 ,  H04L27/00 ,  H04Q2213/13034 ,  H04Q2213/13093 ,  H04Q2213/13106 ,  H04Q2213/13174 ,  H04Q2213/13199 ,  H04Q2213/13201 ,  H04Q2213/13292

    摘要： Modulated data information having an individual one of different baud rates and aural information are converted at a transmitter from analog to digital form. A controller separately identifies the digitized aural and modulated data information and, if modulated data, identifies the baud rate of such modulated data. The aural information is separately transformed. For modulated data, the information is separately processed in accordance with the different baud rates. The individual ones of aural and modulated data are then introduced to a common line for packetizing. The beginning of each packet is labelled to identify whether the packet contains aural information (such as voice or music) or modulated data (such as modem or facsimile), and, if modulated data, the particular baud rate of such information. An individual code identifies the end of each packet. The packetized information is then multiplexed in a common bus with other packetized aural and data information. At a receiver connected to the common bus, the multiplexed information is separated into the different packets. The packetized information representing individual ones of aural information (such as voice or music) and modulated data (such as music or facsimile information) is separated, in accordance with the packet labels, into aural information and modulated data and, if modulated data, is introduced to an individual one of different modulators each operative at an individual one of the different baud rates. The aural information is then transformed substantially to its original form at the transmitter and the modulated data is separately processed in accordance with the different baud rates.