公开(公告)号：US6002682A

公开(公告)日：1999-12-14

申请号：US900971

申请日：1997-07-25

申请人： Donald M. Bellenger ,  Steven P. Russell

发明人： Donald M. Bellenger ,  Steven P. Russell

IPC分类号： H04M11/06 ,  H04L12/50

CPC分类号： H04M11/062

摘要： The present invention allows a modem to operate in both the voice band, from 300 to 3400 Hz, and also in the ADSL band, which extends above 3400 Hz. Unlike conventional ADSL modems, the present invention avoids the computationally-intensive operations required to extract all the available band of a telephone subscriber loop. Consequently, the present invention can be implemented with low-cost modifications to existing voice band modems. The present invention thereby offers higher data transfer rates at a fraction of the cost of more complicated ADSL modems. The present invention also provides bypassing functions, which allow communications through a modem located at the telephone central office side of a subscriber loop to be switched through a packet-switched network, which is capable of accommodating high data transfer rates, instead of a central office switching system, which generally imposes unnecessary limitations on data transfer rates.

摘要翻译： 本发明允许调制解调器在从300到3400Hz的语音频带以及在3400Hz以上延伸的ADSL频带中工作。 与常规ADSL调制解调器不同，本发明避免了提取电话用户环路的所有可用频带所需的计算密集型操作。 因此，本发明可以以对现有语音频带调制解调器的低成本修改来实现。 因此，本发明以更复杂的ADSL调制解调器的成本的一小部分提供更高的数据传输速率。 本发明还提供旁路功能，其允许通过位于用户环路的电话中心局侧的调制解调器通过分组交换网络进行通信，分组交换网络能够适应高数据传输速率而不是中心局 交换系统通常对数据传输速率造成不必要的限制。

公开(公告)号：US5982768A

公开(公告)日：1999-11-09

申请号：US900320

申请日：1997-07-25

申请人： Donald M. Bellenger ,  Steven P. Russell

发明人： Donald M. Bellenger ,  Steven P. Russell

IPC分类号： H04M11/06 ,  H04L12/64

CPC分类号： H04M11/062

摘要： The present invention allows a modem to operate in both the voice band, from 300 to 3400 Hz, and also in the ADSL band, which extends above 3400 Hz. Unlike conventional ADSL modems, the present invention avoids the computationally-intensive operations required to extract all the available band of a telephone subscriber loop. Consequently, the present invention can be implemented with low-cost modifications to existing voice band modems. The present invention thereby offers higher data transfer rates at a fraction of the cost of more complicated ADSL modems. The present invention also provides bypassing functions, which allow communications through a modem located at the telephone central office side of a subscriber loop to be switched through a packet-switched network, which is capable of accommodating high data transfer rates, instead of a central office switching system, which generally imposes unnecessary limitations on data transfer rates.

摘要翻译： 本发明允许调制解调器在从300到3400Hz的语音频带以及在3400Hz以上延伸的ADSL频带中工作。 与常规ADSL调制解调器不同，本发明避免了提取电话用户环路的所有可用频带所需的计算密集型操作。 因此，本发明可以以对现有语音频带调制解调器的低成本修改来实现。 因此，本发明以更复杂的ADSL调制解调器的成本的一小部分提供更高的数据传输速率。 本发明还提供旁路功能，其允许通过位于用户环路的电话中心局侧的调制解调器通过分组交换网络进行通信，分组交换网络能够适应高数据传输速率而不是中心局 交换系统通常对数据传输速率造成不必要的限制。

公开(公告)号：US5535338A

公开(公告)日：1996-07-09

申请号：US452498

申请日：1995-05-30

申请人： Jeffrey Krause ,  Niles E. Strohl ,  Michael J. Seaman ,  Steven P. Russell ,  John H. Hart

发明人： Jeffrey Krause ,  Niles E. Strohl ,  Michael J. Seaman ,  Steven P. Russell ,  John H. Hart

IPC分类号： G06F13/374 ,  G06F13/00 ,  G06F13/376 ,  H04L12/46 ,  H04L29/06

CPC分类号： H04L12/4625 ,  H04L29/06 ,  H04L45/742 ,  H04L69/18

摘要： DLL devices are built with multiple MAC address instead of a single MAC address, and provide a multiple virtual DLL interfaces to the upper layers (3-7) in a computer. This results in a new class of multi-function computers for attachment to a network system which take advantage of the multiple virtual DLL interfaces, to increase performance of the respective functions executed by the computer. Thus, a new network interface control apparatus and a new class of multi-function computer systems for attachments to networks are provided. The memory in the medium access control device stores a plurality of additional network addresses in addition to the assigned network addresses. The address filtering logic includes circuits responsive to the additional network addresses, such as logic for blocking a particular frame on at least one of the plurality of data channels when the source and destination address of a particular frame are found in the additional addresses stored in the memory. The plurality of data channels served by the media access control device may reside on a single physical interface, or in independent physical interfaces as suits the needs of a particular design. A high performance design would include independent buffering and queuing structures for each of the data channels. An alternative design may include shared buffering and queuing structures for a plurality of functional modules in the connected computer which have independent side network addresses.

摘要翻译： DLL设备构建有多个MAC地址而不是单个MAC地址，并且在计算机中向上层（3-7）提供多个虚拟DLL接口。 这导致了一类新的多功能计算机，用于连接到利用多个虚拟DLL接口的网络系统，以提高计算机执行的相应功能的性能。 因此，提供了一种新的网络接口控制装置和用于附接到网络的新类型的多功能计算机系统。 介质访问控制装置中的存储器除了分配的网络地址之外还存储多个附加网络地址。 地址过滤逻辑包括响应于附加网络地址的电路，例如当在存储在所述多个数据信道中的附加地址中找到特定帧的源和目的地址时，用于阻塞所述多个数据信道中的至少一个上的特定帧的逻辑 记忆。 由媒体访问控制设备服务的多个数据信道可以驻留在单个物理接口上，或者在独立的物理接口中，以适应特定设计的需要。 高性能设计将包括每个数据通道的独立缓冲和排队结构。 替代设计可以包括用于连接的计算机中具有独立侧网络地址的多个功能模块的共享缓冲和排队结构。

公开(公告)号：US4450582A

公开(公告)日：1984-05-22

申请号：US301566

申请日：1981-09-14

申请人： Steven P. Russell

发明人： Steven P. Russell

IPC分类号： H04B7/185

CPC分类号： H04B7/18517

摘要： A method and apparatus for increasing the capacity of present and future satellite communication systems transmits signals from correspondent pairs of earth stations simultaneously in channels that have at least a partial overlap in bandwidth. Each receiver at each earth station subtracts from the received composite signal the portion of the composite signal which was transmitted by the receiving earth station. This leaves a desired signal which corresponds to the signal transmitted by the other earth station of the correspondent pair and which is then demodulated. Each receiver at each earth station thus reconstructs an estimated target signal which has the amplitude, delay, frequency and phase of the signal as transmitted from the earth station and retransmitted by the satellite. The reconstructed target signal provides a very precise estimate of the portion of the composite signal transmitted by the earth station. The reconstructed target signal estimate is provided by repeated correlations of known signals against signals which are only partially known in order to produce an output which can be filtered to eliminate further parameters. The further parameters are put back into the estimation process, and said portion of the composite signal is regenerated in this manner of iteration.

摘要翻译： 用于增加当前和未来卫星通信系统的容量的方法和装置在具有至少部分带宽重叠的信道中同时从对应的地球站对传输信号。 每个地球站的每个接收机从接收到的复合信号中减去由接收地球站发射的复合信号的部分。 这留下了对应于通信对的其他地球站发送的信号并且然后被解调的期望信号。 每个地球站的每个接收机因此重建估计的目标信号，该估计目标信号具有从地球站发射并由卫星重发的信号的幅度，延迟，频率和相位。 重建的目标信号提供了由地球站发送的复合信号的部分的非常精确的估计。 重建的目标信号估计是通过已知信号与仅仅部分已知的信号的重复相关来提供的，以产生可被滤波以消除其它参数的输出。 进一步的参数被放回到估计过程中，并且复合信号的所述部分以这种迭代的方式再生。