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公开(公告)号：US06301296B1
公开(公告)日：2001-10-09
申请号：US09592539
申请日：2000-06-12
IPC分类号： H04B138
CPC分类号： H04L25/4927 , H04L5/1453
摘要： A Digital Impairment Learning sequence which is designed for providing reliable estimate of digital impairments such as PAD, RBS, and CODEC type in the presence of analog impairments such as IMD, noise and changing line conditions. This estimate is used to derive optimum transmit symbol constellations for a modem connected digitally to a trunk so as to maximize its data transmission rate.
摘要翻译： 数字损伤学习序列，其设计用于在诸如IMD，噪声和变化线路条件的模拟损伤的存在下提供数字损伤的可靠估计，例如PAD，RBS和CODEC类型。 该估计用于为数字地连接到中继线的调制解调器获得最佳发射符号星座，以使其数据传输速率最大化。
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公开(公告)号：US07616627B2
公开(公告)日：2009-11-10
申请号：US11172015
申请日：2005-06-29
申请人： Jeffrey Allan Green , Mark Gentry
发明人： Jeffrey Allan Green , Mark Gentry
CPC分类号： H04L43/0864
摘要： A system, apparatus, method and article for high definition audio modems are described. The apparatus may include a communications path comprising a communications bus and buffers, a codec to couple to the communications bus, and a processor to couple to the communications bus. The processor may be arranged to execute instructions for a software modem to determine a round trip delay value for a communications path, and adjust the round trip delay value by varying input to one of the buffers. Other embodiments are described and claimed.
摘要翻译： 描述了用于高分辨率音频调制解调器的系统，装置，方法和制品。 该装置可以包括通信路径，其包括通信总线和缓冲器，耦合到通信总线的编解码器以及耦合到通信总线的处理器。 处理器可以被布置为执行软件调制解调器的指令以确定通信路径的往返延迟值，并且通过改变对缓冲器之一的输入来调整往返延迟值。 描述和要求保护其他实施例。
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公开(公告)号：US07424051B2
公开(公告)日：2008-09-09
申请号：US10805102
申请日：2004-03-19
CPC分类号： H04L25/4927 , H04L5/1453
摘要： A Digital Impairment detection scheme which is designed for providing reliable estimate of digital impairments such as PAD, and CODEC type in the presence of digital impairments such as Robbed Bit Signalling and non G.711 complaint network CODECs and analog impairments such as IMD, noise and changing line conditions. This estimate is used to derive optimum transmit symbol constellations for a modem connected digitally to a trunk so as to maximize its data transmission rate.
摘要翻译： 数字损伤检测方案，其设计用于在存在数字损伤（例如Robbed Bit Signaling）和非G.711投诉网络CODEC以及模拟损伤（例如IMD，噪声和噪声）的情况下提供诸如PAD和CODEC类型的数字损伤的可靠估计， 改变线条件。 该估计用于为数字地连接到中继线的调制解调器获得最佳发射符号星座，以使其数据传输速率最大化。
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公开(公告)号：US07366470B1
公开(公告)日：2008-04-29
申请号：US09598680
申请日：2000-06-21
CPC分类号： H04L25/4927
摘要： An Inter-modulation distortion measurement and correction method which could be applied over a communication channel that is a combination of either or both analog and digital channels. This method is applicable for a communication system between a modem pair.
摘要翻译： 可以应用于作为模拟和数字信道之一或两者的组合的通信信道的互调失真测量和校正方法。 该方法适用于调制解调器对之间的通信系统。
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公开(公告)号：US06724814B1
公开(公告)日：2004-04-20
申请号：US09598934
申请日：2000-06-22
IPC分类号： H04B138
CPC分类号： H04L25/4927 , H04L5/1453
摘要： A Digital Impairment detection scheme which is designed for providing reliable estimate of digital impairments such as PAD, and CODEC type in the presence of digital impairments such as Robbed Bit Signalling and non G.711 complaint network CODECs and analog impairments such as IMD, noise and changing line conditions. This estimate is used to derive optimum transmit symbol constellations for a modem connected digitally to a trunk so as to maximize its data transmission rate.
摘要翻译： 数字损伤检测方案，其设计用于在存在数字损伤（例如Robbed Bit Signaling）和非G.711投诉网络CODEC以及模拟损伤（例如IMD，噪声和噪声）的情况下提供诸如PAD和CODEC类型的数字损伤的可靠估计， 改变线条件。 该估计用于为数字地连接到中继线的调制解调器获得最佳发射符号星座，以使其数据传输速率最大化。
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