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公开(公告)号：US06862313B2
公开(公告)日：2005-03-01
申请号：US10127061
申请日：2002-04-18
摘要： A wireless transceiver comprises a digital to analog converter having an input for receiving a digital representation of a direct sequence spread spectrum signal and having an analog output. A filter has an input coupled to the analog output of the digital to analog converter. An adder has a first input coupled to the filtered output and a second input coupled to a loop control voltage generated by a phase lock loop. A VCO integrated into the phase lock loop has a control input coupled to the summed output. An RF output of the VCO produces a continuous phase frequency shift keyed spread spectrum signal in response to the digital representation of the direct sequence spread spectrums signal. A receiver converts received RF signal to baseband in-phase and quadrature that are in turn converted to digitized signals. A demodulator produces chip data that is despread using a matched filter.
摘要翻译： 无线收发器包括具有用于接收直接序列扩频信号的数字表示并具有模拟输出的输入的数模转换器。 滤波器具有耦合到数模转换器的模拟输出的输入。 加法器具有耦合到滤波输出的第一输入和耦合到由锁相环产生的回路控制电压的第二输入。 集成到锁相环中的VCO具有耦合到求和输出的控制输入。 VCO的RF输出响应于直接序列扩频信号的数字表示而产生连续相位频移键控扩频信号。 接收机将接收的RF信号转换成基带同相和正交，然后转换成数字化信号。 解调器产生使用匹配滤波器解扩的芯片数据。
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2.发明授权Direct conversion time division duplex radio, direct sequence spread spectrum cordless telephone 失效直接转换时分双工无线电，直接序列扩频无绳电话公开(公告)号：US06411646B1
公开(公告)日：2002-06-25
申请号：US09107733
申请日：1998-06-30
IPC分类号： H04B1500
摘要： A wireless transceiver comprises a digital to analog converter having an input for receiving a digital representation of a direct sequence spread spectrum signal and having an analog output. A bandpass or lowpass filter has an input coupled to the analog output of the digital to analog converter and has a filtered output. An adder has a first input coupled to the filtered output and a second input coupled to a loop control voltage generated by a phase lock loop. The adder produces a summed output. A VCO integrated into the phase lock loop has a control input coupled to the summed output. An RF output of the VCO produces a continuous phase frequency shift keyed spread spectrum signal in response to the digital representation of the direct sequence spread spectrums signal.
摘要翻译： 无线收发器包括具有用于接收直接序列扩频信号的数字表示并具有模拟输出的输入的数模转换器。 带通或低通滤波器具有耦合到数模转换器的模拟输出并具有滤波输出的输入。 加法器具有耦合到滤波输出的第一输入和耦合到由锁相环产生的回路控制电压的第二输入。 加法器产生一个求和输出。 集成到锁相环中的VCO具有耦合到求和输出的控制输入。 VCO的RF输出响应于直接序列扩频信号的数字表示而产生连续相位频移键控扩频信号。
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3.发明授权System and method for achieving wireless communications coverage in a local area 有权实现局域无线通信覆盖的系统和方法公开(公告)号：US06653932B1
公开(公告)日：2003-11-25
申请号：US09409297
申请日：1999-09-29
IPC分类号： H04M1104
CPC分类号： H04B3/54 , H04B2203/5425 , H04B2203/5441 , H04B2203/5445 , H04B2203/545 , H04B2203/5458 , H04B2203/5479 , H04B2203/5483 , H04B2203/5491
摘要： An electrical apparatus which is configured with an antenna, transceiver, or repeater for transmission or reception over a wireless interface. In one embodiment, the appliance interfaces to a user device through a system which includes the power distribution system of the apparatus. In another embodiment, the apparatus, optionally in combination with a user device, forms a node of a wireless communication system.
摘要翻译： 配置有用于通过无线接口进行发送或接收的天线，收发器或中继器的电气设备。 在一个实施例中，设备通过包括设备的配电系统的系统与用户设备接口。 在另一个实施例中，可选地与用户设备组合的装置形成无线通信系统的节点。
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4.发明授权Peer-to-peer transfer using pre-existing caller ID CLASS FSK signaling infrastructure 失效使用预先存在的呼叫者ID CLASS FSK信令基础设施的对等传输公开(公告)号：US06404868B1
公开(公告)日：2002-06-11
申请号：US09363989
申请日：1999-07-16
IPC分类号： H04M156
CPC分类号： H04M1/573
摘要： A communications device configured to receive FSK-encoded CLASS caller ID information is also configured to exchange FSK-encoded data with a peer device over a channel previously established between the two devices. In one embodiment, the channel is a voice channel previously established between the two devices.
摘要翻译： 被配置为接收FSK编码的CLASS呼叫者ID信息的通信设备还被配置为通过先前在两个设备之间建立的信道上与对等设备交换FSK编码的数据。 在一个实施例中，信道是先前在两个设备之间建立的语音信道。
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5.发明授权Peer-to-peer data transfer using pre-existing caller ID CLASS FSK signaling infrastructure 有权使用预先存在的呼叫者ID CLASS FSK信令基础设施的对等数据传输公开(公告)号：US06304642B1
公开(公告)日：2001-10-16
申请号：US09328048
申请日：1999-06-08
IPC分类号： H04M156
CPC分类号： H04M1/573
摘要： A communications device configured to receive FSK-encoded CLASS caller ID information is also configured to exchange FSK-encoded data with a peer device over a channel previously established between the two devices. In one embodiment, the channel is a voice channel previously established between the two devices.
摘要翻译： 被配置为接收FSK编码的CLASS呼叫者ID信息的通信设备还被配置为通过先前在两个设备之间建立的信道上与对等设备交换FSK编码的数据。 在一个实施例中，信道是先前在两个设备之间建立的语音信道。
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6.发明授权公开(公告)号：US06744808B1
公开(公告)日：2004-06-01
申请号：US09325107
申请日：1999-06-03
申请人： John S. Walley , Norman J. Beamish
发明人： John S. Walley , Norman J. Beamish
IPC分类号： H04B1500
CPC分类号： H04B1/707 , H04B2201/70703
摘要： Spread spectrum technology is being used in more and more wireless applications. Generally applications of spread spectrum include a fixed spread spectrum code size. In addition in applications that employ time domain duplex, some may employ a fixed duty cycle, for example 50% broadcast and 50% receive, for broadcast and receive functions. Many applications, such as cordless phones, also feature a fixed sampling rate for an input signal. By building systems in which these variables are not fixed but variable manufacturers can make generic type spread spectrum controllers which can be used in a variety of applications. These same circuits can also be controlled to give current devices enhanced characteristics by adjusting data rate for changing conditions, thereby enhancing their performance. By allowing the spreading code to be reduced in length, the data rate of the transmitted signal can be increased without adjusting the bandwidth of the amplifiers used to amplify the transmitted signal. Similarly, more data can be transmitted or spreading code size increased by increasing the transmit duty cycle or the number of timeslices allotted to transmit the signal. The spreading code size can also be increased by using techniques, such as reduced sampling rate, which reduce the amount of data input into the system. Conversely the spreading code length can be increased in order to achieve more range, greater interference tolerance etc. by reducing the data rate or increasing the amount of time allotted to broadcast the signal.
摘要翻译： 扩频技术正在越来越多的无线应用中使用。 一般来说，扩展频谱的应用包括固定的扩频码尺寸。 此外，在采用时域双工的应用中，有些可以采用固定占空比，例如广播和接收功能的50％广播和50％接收。 许多应用，例如无绳电话，也具有用于输入信号的固定采样率。 通过构建这些变量不固定的系统，但可变制造商可以制造可用于各种应用的通用型扩频控制器。 这些相同的电路也可以被控制，以通过调整变化条件的数据速率来提供电流器件的增强特性，从而提高它们的性能。 通过允许扩展码的长度减小，可以增加发送信号的数据速率，而无需调整用于放大发送信号的放大器的带宽。 类似地，可以通过增加分配给发送信号的发射占空比或次数的数量来传输更多数据或扩展码大小增加。 也可以通过使用诸如降低采样率的技术来增加扩展码大小，这减少了输入系统的数据量。 相反，通过减少数据速率或增加分配广播信号的时间量，可以增加扩展码长度以便实现更多的范围，更大的干扰容限等。
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7.发明授权Power management for a telephone system by dynamically adjusting transmission power 失效通过动态调整传输功率，对电话系统进行电源管理公开(公告)号：US06256476B1
公开(公告)日：2001-07-03
申请号：US09104732
申请日：1998-06-25
申请人： Norman J. Beamish , John S. Walley
发明人： Norman J. Beamish , John S. Walley
IPC分类号： H04Q720
CPC分类号： H04W52/283 , H04W52/08 , H04W52/362 , H04W52/367 , H04W52/54 , H04W52/56
摘要： A power management system for a mobile unit wherein the base station detects the quality of the signals transmitted by the mobile unit. Based on this signal quality, the base station determines if the mobile unit should increase the transmission power level. If an increase in transmission power is indicated, the base station sends a signal to the mobile unit to cause the mobile unit to increase transmission power. However, to save battery power, the mobile unit only transmits at the increased power level for a limited amount of time, and then automatically returns to transmitting at the lower power level. Further, a slightly decreased high power level is established to allow the mobile unit to function when it is located away from the base station, yet not near the outer transmission boundary.
摘要翻译： 一种用于移动单元的电源管理系统，其中基站检测由移动单元发送的信号的质量。 基于该信号质量，基站确定移动单元是否应该增加发射功率电平。 如果指示发送功率的增加，则基站向移动单元发送信号，使移动单元增加发送功率。 然而，为了节省电池电量，移动单元仅在有限的时间内以增加的功率电平进行发送，然后自动返回到较低功率电平的发送。 此外，建立了略微降低的高功率电平，以允许移动单元在远离基站而不在外部传输边界附近时起作用。
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8.发明授权公开(公告)号：US06865216B1
公开(公告)日：2005-03-08
申请号：US09137198
申请日：1998-08-20
申请人： Norman J. Beamish , John S. Walley
发明人： Norman J. Beamish , John S. Walley
摘要： A wireless transceiver capable of selectively receiving and transmitting as a direct sequence spread spectrum system or as a frequency hopping spread spectrum system is disclosed. The system is particularly suitable for use in a cordless telephone system. The transceiver includes components for both direct sequence spread spectrum transmission and reception and for frequency hopping spread spectrum transmission and reception.
摘要翻译： 公开了能够选择性地接收和发送作为直接序列扩频系统或作为跳频扩频系统的无线收发机。 该系统特别适用于无绳电话系统。 收发器包括用于直接序列扩频发射和接收以及用于跳频扩频发射和接收的组件。
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9.发明授权公开(公告)号：US06694143B1
公开(公告)日：2004-02-17
申请号：US09658729
申请日：2000-09-11
IPC分类号： H04Q720
CPC分类号： H04W88/06 , H04L41/082 , H04M1/6066 , H04M1/72566 , H04M1/72572 , H04M19/045 , H04M2250/02 , H04W28/18 , H04W84/10
摘要： This invention provides a communication device that is capable of interacting with a local wireless communication system when the communication device is within range of the local wireless communication system for controlling operating characteristics of the communication device. The communication device may include cellular telephones, mobile phones, voice pagers, data pagers, mobile computers, palm computers, mobile facsimile machines, mobile appliances, multimedia devices and other wireless communication devices. The local wireless communication system may be located in any site such as an office building, home, hotel, concert hall, movie theater, restaurant, conference room, or public transportation systems. When the local wireless communication system determines that a command is to be sent, the system may transmit a command to all communication devices that are within range of the local wireless communication system, or to a subset of them. For example, the local wireless communication system in an airplane may send a command to all cell phones within its range to turn off to prevent harmful interference with the airplanes communication system. As another example, a local wireless communication system in a concert hall may send a command to change a wireless communication device from ringing mode to vibrate mode during a concert. The command may be any kind of command. The command can change an operating characteristic of the wireless communication device while optionally giving the device the continued ability to communicate and interact with other communication networks. In another alternative, a wireless communication device such as a cell phone may receive information about a user's hearing aid and its “prescription” from a local wireless communication system and change its output characteristics to emulate the hearing aid so that the user can use the wireless communication device without the hearing aid. Also, wireless communication device may communicate with a local wireless communication system to turn off a user's headphone when the wireless communication device receives an incoming call or data signal.
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公开(公告)号：US06731747B2
公开(公告)日：2004-05-04
申请号：US09792816
申请日：2001-02-23
IPC分类号： H04M100
CPC分类号： H04B3/23
摘要： A system is disclosed for accurately detecting an alert signal. Improving detector accuracy decreases missed detects and false detects. In one example embodiment the detector monitors received telephone signals for an alert signal such as a CPE alert signal. In such a configuration, the invention processes the received signal prior to monitoring by the detector to remove or reduce unwanted echo, interference and/or other signal portions that may otherwise inhibit accurate detection of alert signals sent from a remote location. In one configuration, the invention performs echo suppression or cancellation on the received signal to eliminate or reduce echo, such as may be introduced by a hybrid.
摘要翻译： 公开了一种用于准确地检测报警信号的系统。 提高检测器精度可以减少检测误差和错误检测。 在一个示例实施例中，检测器监视接收的电话信号以获得诸如CPE警报信号的警报信号。 在这种配置中，本发明在由检测器进行监视之前处理接收到的信号，以去除或减少不必要的回波，干扰和/或其他信号部分，否则这些信号部分可能会禁止从远程位置发送的警报信号的精确检测。 在一种配置中，本发明对接收到的信号执行回波抑制或消除以消除或减少回波，例如可以由混合器引入。
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