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1. 发明申请

WO1998012836A1 COMPONENT TIMING RECOVERY SYSTEM FOR QAM 审中-公开
标题翻译：用于QAM的组件时序恢复系统
公开(公告)号：WO1998012836A1
公开(公告)日：1998-03-26
申请号：PCT/US1997015888
申请日：1997-09-08
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： THOMSON CONSUMER ELECTRONICS, INC. , KNUTSON, Paul, Gothard , RAMASWAMY, Kumar , McNEELY, David, Lowell
IPC分类号： H04L07/02
CPC分类号： H04L7/0029 , H04L7/0335 , H04L27/38
摘要： A receiver for a transmitted quadrature amplitude modulated (QAM) signal representing successive symbols, and including an in-phase (I) component and a quadrature (Q) component. A timing recovery system includes a source of samples (102) representing the QAM signal produced at a fixed frequency. Processing circuitry for the I component includes a first demodulator (104), coupled to the sample source, for demodulating the I component of the QAM signal to baseband; and a first interpolator (108), responsive to a control signal, for producing I component samples taken at times synchronized to the transmitted symbols. Processing circuitry for the Q component includes a second demodulator (114), also coupled to the sample source, for demodulating the Q component of the QAM signal to baseband; and a second interpolator (118), responsive to a control signal, for producing Q component samples taken at times synchronized to the transmitted symbols. A phase error detector (126) detects the phase error between the sample times of the I and Q component samples from the first and second interpolators and times of the successive transmitter symbols. A summer (130) is coupled to the phase error detector and a source of a nominal delay signal. A numerically controlled delay circuit (132), is coupled to the summer, for producing the respective control signals for the first and second interpolators.
摘要翻译：用于发送的正交幅度调制（QAM）信号的接收机，其表示连续符号，并且包括同相（I）分量和正交（Q）分量。定时恢复系统包括表示以固定频率产生的QAM信号的样本源（102）。用于I分量的处理电路包括耦合到采样源的用于将QAM信号的I分量解调为基带的第一解调器（104）以及响应于控制信号的第一内插器（108），用于产生在与发送的符号同步的时间采集的I分量样本。用于Q分量的处理电路包括还耦合到采样源的第二解调器（114），用于将QAM信号的Q分量解调为基带; 以及响应于控制信号的第二内插器（118），用于产生在与发送的符号同步的时间采集的Q分量样本。相位误差检测器（126）检测来自第一和第二内插器的I和Q分量采样的采样时间与连续发射机符号的时间之间的相位误差。夏季（130）耦合到相位误差检测器和标称延迟信号的源。数字控制延迟电路（132）耦合到加法器，用于产生用于第一和第二内插器的相应控制信号。

2. 发明申请

WO1998017038A1 RECEIVER SIGNAL PROCESSING SYSTEM FOR CAP SIGNALS 审中-公开
标题翻译： CAP信号接收信号处理系统
公开(公告)号：WO1998017038A1
公开(公告)日：1998-04-23
申请号：PCT/US1997017829
申请日：1997-10-06
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： THOMSON CONSUMER ELECTRONICS, INC. , KNUTSON, Paul, Gothard , STEWART, John, Sidney , RAMASWAMY, Kumar
IPC分类号： H04L27/38
CPC分类号： H04L25/4921
摘要： A CAP signal is processed by a QAM demodulator network (fig. 2, 250). The QAM network causes the CAP signal to rotate about its center frequency, which rotation is removed prior to conveying the CAP signal to utilization networks. In an analog implementation (fig. 3), the CAP signal is frequency up-converted to be centered at Fad/4 so that the QAM processor can use the usual 1, 0, -1, 0 demodulation sequence to bring the CAP signal to baseband. Alternatively, using digital techniques (fig. 4), frequency upconverting is not needed and the 1, 0, -1, 0 demodulation sequence is replaced with a Numerically Controlled Oscillator (406) and full multiplier to allow the QAM processor the bring the CAP signal to baseband.
摘要翻译： CAP信号由QAM解调器网络处理（图2,250）。 QAM网络使得CAP信号绕其中心频率旋转，在将CAP信号传送到利用网络之前，该旋转被去除。在模拟实现（图3）中，CAP信号被频率上变频为以Fad / 4为中心，使得QAM处理器可以使用通常的1,0，-1,0解调序列来使CAP信号基带。或者，使用数字技术（图4），不需要上变频，并且用数字控制振荡器（406）和全乘法器替换1,0，-1,0解调序列，以允许QAM处理器带CAP 信号到基带。

3. 发明申请

WO1998027683A2 RETURN CHANNEL PROCESSING FOR A DIGITAL DATA COMMUNICATIONS SYSTEM 审中-公开
标题翻译：数字数据通信系统的返回信道处理
公开(公告)号：WO1998027683A2
公开(公告)日：1998-06-25
申请号：PCT/US1997022668
申请日：1997-12-10
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： THOMSON CONSUMER ELECTRONICS, INC. , KNUTSON, Paul, Gothard , McNEELY, David, Lowell
IPC分类号： H04L05/14
CPC分类号： H04L5/1461
摘要： A user/subscriber set-top unit (42, 44) in a satellite TV system is associated with a modem (30) coupled to an input optical fiber interface network (12) via a relatively high attenuation unshielded twisted pair (UTP) link (24). The modem demodulates (36) a UTP-attenuated, CAP 16 modulated downstream main signal, and generates (38) a higher energy QPSK modulated upstream return signal. Return signal interference in the received main signal is attenuated (34) by subtracting a delayed, phase adjusted version of the modulated return signal from the main signal before the main signal is demodulated. Interference cancellation is accomplished by using a subtraction process rather than by using a frequency selective filtering process. Interference cancellation may also be accomplished (22) in the interface network (12) preceding the UTP link.
摘要翻译：卫星电视系统中的用户/订户机顶单元（42,44）经由相对较高的衰减非屏蔽双绞线（UTP）链路（UTP）链接到耦合到输入光纤接口网络（12）的调制解调器（30） 24）。调制解调器解调（36）UTP衰减的CAP 16调制的下行主信号，并产生（38）较高能量QPSK调制的上行返回信号。通过在主信号被解调之前从主信号中减去调制返回信号的延迟相位调整版本，衰减（34）接收到的主信号中的返回信号干扰。通过使用减法处理而不是使用频率选择滤波处理来实现干扰消除。也可以在UTP链路之前的接口网络（12）中完成干扰消除（22）。

4. 发明授权

EP0931404B1 RECEIVER SIGNAL PROCESSING SYSTEM FOR CAP SIGNALS 失效
标题翻译：接收信号处理单元露肩AM-PM SIGNALS
公开(公告)号：EP0931404B1
公开(公告)日：2003-01-02
申请号：EP97909947.0
申请日：1997-10-06
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： KNUTSON, Paul, Gothard , STEWART, John, Sidney , RAMASWAMY, Kumar
IPC分类号： H04L27/38
CPC分类号： H04L25/4921
摘要： A CAP signal is processed by a QAM demodulator network (fig. 2, 250). The QAM network causes the CAP signal to rotate about its center frequency, which rotation is removed prior to conveying the CAP signal to utilization networks. In an analog implementation (fig. 3), the CAP signal is frequency up-converted to be centered at Fad/4 so that the QAM processor can use the usual 1, 0, -1, 0 demodulation sequence to bring the CAP signal to baseband. Alternatively, using digital techniques (fig. 4), frequency upconverting is not needed and the 1, 0, -1, 0 demodulation sequence is replaced with a Numerically Controlled Oscillator (406) and full multiplier to allow the QAM processor the bring the CAP signal to baseband.

5. 发明公开

EP1040602A1 MULTI-LINE WIRELESS TELEPHONE SYSTEM COMPUTER INTERFACE 有权
标题翻译：计算机接口，用于无线多路电话安排
公开(公告)号：EP1040602A1
公开(公告)日：2000-10-04
申请号：EP98942332.2
申请日：1998-09-01
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： KNUTSON, Paul, Gothard , RAMASWAMY, Kumar , SEEFELDT, David, Frederick , STEPHENSON, Harry, Victor , PETERSON, Eric, Carl
IPC分类号： H04B7/26 , H04M1/72
CPC分类号： H04B7/2643
摘要： A wireless telephone system has one or more wireless handsets and a base unit. Each handset has a handset transceiver. The base unit has a base transceiver for communicating over an RF channel with each handset via its handset transceiver. The base transceiver also includes an interface for interfacing with an external computer, wherein the computer, when interfaced with the base unit via the interface, can control the operation of the wireless telephone system.

6. 发明公开

EP1050155A1 SYSTEM AND METHOD FOR PROVIDING IP/INTERNET TELEPHONY 审中-公开
标题翻译：系统和方法提供IP / INTERNET TELEPHONY
公开(公告)号：EP1050155A1
公开(公告)日：2000-11-08
申请号：EP99903407.7
申请日：1999-01-27
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： RHODES, Robert, Andrew , RAMASWAMY, Kumar , KNUTSON, Paul, Gothard
IPC分类号： H04M7/00
CPC分类号： H04M7/0057 , H04M1/2535 , H04M1/57 , H04M3/02 , H04M7/006
摘要： A system and method are described providing a wireless interface to an Internet Protocol (IP)/Internet telephony system. A wireless connection via the unregulated 900 MHz cordless phone spectrum or other spectrum allocated for wireless communications provides an RF link between an IP connection device, a network interface box or set-top box, and one or more wirelss handsets. A processing/control element in the network interface box runs the required IP protocols to establish and manage call set-up and teardown, translate the digital voice signal between IP and the local RF link protocol, and provide the RF base station function for the handset(s). Each handset would incorporate the other end of the RF link. The wireless interface to a telephone handset may be through a settop box that is tied into a cable network such as a hybrid coaxial cable network. A protocol such as the Internet Protocol may be used to maintain a digital connection into a cable network while using an RF link to transmit compressed voice/data information between a telephone device such as a telephone handset and an interface unit such as a settop box.

7. 发明公开

EP0931404A1 RECEIVER SIGNAL PROCESSING SYSTEM FOR CAP SIGNALS 失效
标题翻译：接收信号处理单元露肩AM-PM SIGNALS
公开(公告)号：EP0931404A1
公开(公告)日：1999-07-28
申请号：EP97909947.0
申请日：1997-10-06
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： KNUTSON, Paul, Gothard , STEWART, John, Sidney , RAMASWAMY, Kumar
IPC分类号： H04L27 , H04L25
CPC分类号： H04L25/4921
摘要： A CAP signal is processed by a QAM demodulator network (fig. 2, 250). The QAM network causes the CAP signal to rotate about its center frequency, which rotation is removed prior to conveying the CAP signal to utilization networks. In an analog implementation (fig. 3), the CAP signal is frequency up-converted to be centered at Fad/4 so that the QAM processor can use the usual 1, 0, -1, 0 demodulation sequence to bring the CAP signal to baseband. Alternatively, using digital techniques (fig. 4), frequency upconverting is not needed and the 1, 0, -1, 0 demodulation sequence is replaced with a Numerically Controlled Oscillator (406) and full multiplier to allow the QAM processor the bring the CAP signal to baseband.

8. 发明授权

EP1040601B1 RETRIEVING STORED DATA FROM A BASE UNIT OF A MULTI-LINE WIRELESS PHONE SYSTEM 有权
标题翻译：搜索存储在数据免遭无线多路电话装置的固定站
公开(公告)号：EP1040601B1
公开(公告)日：2003-11-12
申请号：EP98942331.4
申请日：1998-09-01
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： RAMASWAMY, Kumar , KNUTSON, Paul, Gothard
IPC分类号： H04B7/26 , H04Q7/22
CPC分类号： H04M1/72505 , H04M1/57
摘要： A wireless telephone system comprises a base unit and a plurality of wireless handsets. The base unit has a base transceiver and a memory for storing stored information. Each handset has a handset transceiver for establishing a data link and an audio link with the base unit via the base transceiver, wherein the data link is for transmitting signaling information and the audio link is for transmitting voice data for a real-time telephone call. The handset requests from the base unit certain stored information. In response, the base unit retrieves the requested stored information from the memory and transmits the stored information to the handset via the audio link.

9. 发明授权

EP1040602B1 MULTI-LINE WIRELESS TELEPHONE SYSTEM COMPUTER INTERFACE 有权
标题翻译：计算机接口，用于无线多路电话安排
公开(公告)号：EP1040602B1
公开(公告)日：2003-07-02
申请号：EP98942332.2
申请日：1998-09-01
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： KNUTSON, Paul, Gothard , RAMASWAMY, Kumar , SEEFELDT, David, Frederick , STEPHENSON, Harry, Victor , PETERSON, Eric, Carl
IPC分类号： H04B7/26 , H04M1/72
CPC分类号： H04B7/2643
摘要： A wireless telephone system has one or more wireless handsets and a base unit. Each handset has a handset transceiver. The base unit has a base transceiver for communicating over an RF channel with each handset via its handset transceiver. The base transceiver also includes an interface for interfacing with an external computer, wherein the computer, when interfaced with the base unit via the interface, can control the operation of the wireless telephone system.

10. 发明授权

EP0970575B1 SYMBOL TIMING RECOVERY NETWORK FOR A CARRIERLESS AMPLITUDE PHASE (CAP) SIGNAL 失效
标题翻译：用于无载振幅相位（CAP）信号的符号时序恢复网络
公开(公告)号：EP0970575B1
公开(公告)日：2006-05-24
申请号：EP98910180.3
申请日：1998-03-05
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： KNUTSON, Paul, Gothard
IPC分类号： H04L25/49
CPC分类号： H04L25/4921 , H04L7/0334 , H04L7/0335
摘要： A symbol timing recovery (STR) error detector (10) includes a complex multiplier (14) and a Gardner-type symbol timing error estimator (12) for operation with carrierless amplitude phase (CAP) signals. Quadrature Ir and Qr signals from the system are input to the complex multiplier, which also receives signals from a numerically controlled oscillator (16) operating at the CAP center frequency. The output of the complex multiplier is provided to the input of the Gardner STR error estimator. An added frequency shift allows the Gardner error estimator to function with CAP signals. The output from the error estimator is provided to a loop filter (110) the output of which is provided to an oscillator (112) which generates the symbol timing information (114) for a symbol sampling network (106).
摘要翻译：符号定时恢复（STR）误差检测器（10）包括用于利用无载波幅度相位（CAP）信号操作的复数乘法器（14）和加德纳型符号定时误差估计器（12）。来自系统的正交Ir和Qr信号被输入到复数乘法器，复数乘法器还接收来自以CAP中心频率运行的数字控制振荡器（16）的信号。复数乘法器的输出提供给加德纳STR误差估计器的输入。增加的频移允许加德纳误差估计器与CAP信号一起工作。将误差估计器的输出提供给环路滤波器（110），其输出被提供给产生符号采样网络（106）的符号定时信息（114）的振荡器（112）。

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