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1. 发明授权

US06566944B1 Current modulator with dynamic amplifier impedance compensation 有权
标题翻译：具有动态放大器阻抗补偿的电流调制器
公开(公告)号：US06566944B1
公开(公告)日：2003-05-20
申请号：US10080239
申请日：2002-02-21
申请人： David R. Pehlke , Aristotele Hadjichristos , William O. Camp, Jr.
发明人： David R. Pehlke , Aristotele Hadjichristos , William O. Camp, Jr.
IPC分类号： H03F338
CPC分类号： H03G3/3047 , H03F1/0233 , H03F1/0272 , H03F1/56 , H03F2200/504 , H03G3/004 , H03G3/3042
摘要： An amplitude modulation circuit (modulator) provides modulated supply current, possibly in combination with modulated supply voltage, to a radio frequency (RF) power amplifier (PA), and includes a detection circuit responsive to changes in the ratio of that voltage to the modulated supply current, described herein as its AM modulation impedance. Such impedance (resistance) changes commonly arise from changing coupling characteristics at the RF antenna assembly driven by the PA. A gain control circuit may be associated with the detection circuit, and made responsive thereto, thus allowing adjustment of modulation gain control responsive to changes in PA AM modulation impedance. In one embodiment, this arrangement permits the modulator to hold a fixed modulation gain over changing PA AM modulation impedance, while in other embodiments, modulation gain varies in response to PA impedance changes to avoid signal clipping. Such clipping might otherwise occur where current modulation values in combination with increased PA resistance would result in PA voltages exceeding the supply voltage of the PA.
摘要翻译：幅度调制电路（调制器）将调制的电源电流（可能与调制的电源电压组合）提供给射频（RF）功率放大器（PA），并且包括响应于该电压与调制的电源电流，这里描述为其AM调制阻抗。这种阻抗（电阻）变化通常来自于由PA驱动的RF天线组件处的耦合特性的改变。增益控制电路可以与检测电路相关联，并对其进行响应，从而允许响应于PA AM调制阻抗的变化来调整调制增益控制。在一个实施例中，这种布置允许调制器在改变PA AM调制阻抗的情况下保持固定的调制增益，而在其他实施例中，调制增益响应于PA阻抗变化而变化以避免信号限幅。否则可能发生这种削波，其中当前调制值与增加的PA电阻相结合将导致PA电压超过PA的电源电压。

2. 发明授权

US06839549B2 System and method of RF power amplification 有权
标题翻译： RF功率放大的系统和方法
公开(公告)号：US06839549B2
公开(公告)日：2005-01-04
申请号：US09738971
申请日：2000-12-14
申请人： David R. Pehlke , Aristotle Hadjichristos , William O. Camp, Jr.
发明人： David R. Pehlke , Aristotle Hadjichristos , William O. Camp, Jr.
IPC分类号： H03F1/02 , H03F3/60 , H04B1/04
CPC分类号： H03F3/602 , H03F1/0266 , H03F2200/504
摘要： A radio frequency power amplifier circuit provides linear amplitude modulation of a radio frequency output signal while operating in a saturated amplification mode. The power amplifier circuit incorporates a lossy modulator that functions as a variable resistance responsive to an amplitude modulation signal. A supply voltage is coupled to the voltage supply input of the power amplifier circuit through the lossy modulator, such that the supply voltage applied to the power amplifier varies with the amplitude modulation signal. The radio frequency power amplifier circuit modulates the envelope of an RF output signal generated by saturated mode amplification of a constant envelope radio frequency input signal.
摘要翻译：射频功率放大器电路在以饱和放大模式工作时提供射频输出信号的线性幅度调制。功率放大器电路包括有损调制器，其响应于幅度调制信号而用作可变电阻。电源电压通过有损调制器耦合到功率放大器电路的电压源输入，使得施加到功率放大器的电源电压随着幅度调制信号而变化。射频功率放大器电路调制由恒定包络射频输入信号的饱和模式放大产生的RF输出信号的包络。

3. 发明授权

US06975686B1 IQ modulation systems and methods that use separate phase and amplitude signal paths 有权
标题翻译： IQ调制系统和方法使用单独的相位和幅度信号路径
公开(公告)号：US06975686B1
公开(公告)日：2005-12-13
申请号：US09703037
申请日：2000-10-31
申请人： M. Ali Khatibzadeh , Aristotle Hadjichristos , Scott R. Justice , Steven G. Cairns , Charles Gore, Jr. , Jeffrey Schlang , Erik Bengtsson , William O. Camp, Jr. , David R. Pehlke
发明人： M. Ali Khatibzadeh , Aristotle Hadjichristos , Scott R. Justice , Steven G. Cairns , Charles Gore, Jr. , Jeffrey Schlang , Erik Bengtsson , William O. Camp, Jr. , David R. Pehlke
IPC分类号： H04L27/36 , H03C3/09 , H03C3/40 , H04L27/04 , H04L27/12 , H04L27/20
CPC分类号： H03F3/24 , H03C3/0941 , H03C3/0966 , H03C3/0983 , H03C3/40 , H03F2200/336 , H03F2200/504 , H04L27/362
摘要： A digital signal processor generates in-phase, quadrature-phase and amplitude signals from a baseband signal. A modulator modulates the in-phase and quadrature-phase signals to produce a modulated signal. A phase locked loop is responsive to the modulated signal. The phase locked loop includes a controlled oscillator having a controlled oscillator input. An amplifier includes a signal input, amplitude control input and an output. The signal input is responsive to the controlled oscillator output and the amplitude control input is responsive to the amplitude signal. The in-phase and quadrature-phase signals may be normalized in-phase and quadrature-phase signals. Alternatively, a phase tracking subsystem may be provided that is responsive to the quadrature modulator to produce a phase signal that is responsive to phase changes in the modulated signal and that is independent of amplitude changes in the modulated signal. An amplitude tracking subsystem also may be provided that is responsive to the modulator to produce an amplitude system that is responsive to amplitude changes in the modulated signal and that is independent of the phase changes in the modulated signal. An amplifier has a signal output, an amplitude control input and an output. The signal input is responsive to the phase signal and the amplitude control input is responsive to the amplitude signal.
摘要翻译：数字信号处理器从基带信号产生同相，正交相位和幅度信号。调制器调制同相和正交相位信号以产生调制信号。锁相环对调制信号作出响应。锁相环包括具有受控振荡器输入的受控振荡器。放大器包括信号输入，幅度控制输入和输出。信号输入响应于受控振荡器输出，并且幅度控制输入响应振幅信号。同相和正交相信号可以是归一化的同相和正交相位信号。或者，可以提供响应于正交调制器的相位跟踪子系统，以产生响应于调制信号中的相位变化并且与调制信号中的幅度变化无关的相位信号。还可以提供振幅跟踪子系统，其响应于调制器产生响应于调制信号中的幅度变化并且与调制信号中的相位变化无关的振幅系统。放大器具有信号输出，幅度控制输入和输出。信号输入响应于相位信号，幅度控制输入响应振幅信号。

4. 发明授权

US09590715B2 WCDMA power saving with transmit diversity 有权
标题翻译： WCDMA功率节省与发射分集
公开(公告)号：US09590715B2
公开(公告)日：2017-03-07
申请号：US11615281
申请日：2006-12-22
申请人： William O. Camp, Jr.
发明人： William O. Camp, Jr.
IPC分类号： H04B1/02 , H04B1/04 , H04B1/38 , H04B7/00 , H04B7/06 , H04B1/16 , H04B7/04 , H04W52/02 , H04W52/20 , H04W52/42
CPC分类号： H04B7/0693 , H04B1/1615 , H04B7/0404 , H04B7/0691 , H04W52/0232 , H04W52/20 , H04W52/42 , Y02D70/40 , Y02D70/444
摘要： A mobile terminal reduces its power consumption by selectively switching between a diversity mode and a non-diversity mode. The mobile terminal monitors the total output power of two or more of its transmitters, and selectively switches between the diversity mode and the non-diversity mode based on the total output power. The mobile terminal may also selectively switch between the diversity and non-diversity modes based on a difference in output power levels between the two or more transmitters.
摘要翻译：移动终端通过选择性地在分集模式和非分集模式之间切换来降低功耗。移动终端监视其两个或多个发射机的总输出功率，并且基于总输出功率选择性地在分集模式和非分集模式之间切换。移动终端还可以基于两个或更多个发射机之间的输出功率电平的差异，在分集和非分集模式之间选择性地切换。

5. 发明授权

US08798075B2 Peer to peer connection 有权
标题翻译：对等连接
公开(公告)号：US08798075B2
公开(公告)日：2014-08-05
申请号：US11469680
申请日：2006-09-01
申请人： Brett A. Pantalone , Anders Angelhag , Jan Robert Tobias Ritzau , William O. Camp, Jr.
发明人： Brett A. Pantalone , Anders Angelhag , Jan Robert Tobias Ritzau , William O. Camp, Jr.
IPC分类号： H04L12/56
CPC分类号： H04L67/1068 , H04L29/06027 , H04L61/106 , H04L69/329 , H04W4/14
摘要： A method in a first device for setting up a peer-to-peer IP connection between the first device and a second device may include sending a request to a second device for setting up the peer-to-peer IP connection between the first device and the second device. The request may include an IP address of the first device. Alternatively, an IP address of the second device may be received in a message from the second device. The peer-to-peer IP connection between the first device and the second device is then set up. The setting up may be initiated by one of the parties associated with the first device or the second device by connecting to the other party using the IP address of the other party.
摘要翻译：用于在第一设备和第二设备之间建立对等IP连接的第一设备中的方法可以包括向第二设备发送请求以建立第一设备和第二设备之间的对等IP连接第二个设备。请求可以包括第一设备的IP地址。或者，可以在来自第二设备的消息中接收第二设备的IP地址。然后设置第一设备和第二设备之间的对等IP连接。可以通过使用另一方的IP地址连接到另一方，由与第一设备或第二设备相关联的一方发起设置。

6. 发明授权

US08385865B2 Evolved EDGE receiver 失效
标题翻译：演进的EDGE接收机
公开(公告)号：US08385865B2
公开(公告)日：2013-02-26
申请号：US12190052
申请日：2008-08-12
申请人： William O. Camp, Jr. , Toby John Bowen , Leland Scott Bloebaum
发明人： William O. Camp, Jr. , Toby John Bowen , Leland Scott Bloebaum
IPC分类号： H04B7/08 , H04B7/00 , H04B1/26 , H03J7/32 , H04M1/00
CPC分类号： H04B1/30
摘要： The wireless receiver of the present invention accommodates dual-carrier Evolved EDGE without significantly impacting existing receiver architectures. The inventive receiver comprises a shared local oscillator and two image-rejecting downconverters. The local oscillator generates a local oscillator frequency between two carrier frequencies of adjacent radio channels. The receiver receives a signal in each of the adjacent radio channels. In a dual-carrier mode, a first image-rejecting downconverter uses the local oscillator frequency to downconvert a first signal received in the first radio channel while rejecting a second signal received in the second radio channel. A second image-rejecting downconverter uses the local oscillator frequency to downconvert the second signal while rejecting the first signal. In a diversity mode, the first and second image-rejecting downconverters use the local oscillator frequency to downconvert the signal received in one of the radio channels while rejecting the signal received in the other radio channel.
摘要翻译：本发明的无线接收机容纳双载波演进EDGE，而不会显着影响现有的接收机架构。本发明的接收机包括共享本地振荡器和两个图像拒绝下变频器。本地振荡器在相邻无线电信道的两个载波频率之间产生本地振荡器频率。接收机在每个相邻无线电信道中接收信号。在双载波模式中，第一图像拒绝下变频器使用本地振荡器频率来下变频在第一无线电信道中接收的第一信号，同时拒绝在第二无线电信道中接收的第二信号。第二个图像拒绝下变频器使用本地振荡器频率来下转换第二信号，同时拒绝第一个信号。在分集模式中，第一和第二图像拒绝下变频器使用本地振荡器频率来下变频在一个无线电信道中接收的信号，同时拒绝在另一个无线电信道中接收的信号。

7. 发明授权

US08102810B2 Adaptively selecting signal constellations for multi-carrier edge 有权
标题翻译：自适应选择多载波边缘的信号星座
公开(公告)号：US08102810B2
公开(公告)日：2012-01-24
申请号：US12210507
申请日：2008-09-15
申请人： Leland Scott Bloebaum , William O. Camp, Jr. , Toby John Bowen
发明人： Leland Scott Bloebaum , William O. Camp, Jr. , Toby John Bowen
IPC分类号： H04W72/04
CPC分类号： H04L27/0008 , H04L27/2614
摘要： The wireless communication device and corresponding method described herein selectively switches between a single-frequency mode, such as appropriate for an EDGE network, and a multiple-frequency mode, such as appropriate for a multi-carrier EDGE network. Accordingly, a transmitting wireless communication device selectively switches between a single-channel mapping unit, used during the single-frequency mode, and a multi-channel mapping unit, used during the multiple-frequency mode. The multi-channel mapping unit modulates input data to output a modulated data stream for each of multiple adjacent frequency channels that, when combined, produce a multiple-frequency signal with reduced peak-to-average ratio. A receiving wireless communication device selectively switches between a single-channel demodulator, used during the single-frequency mode, and a multi-channel demodulator, used during the multiple-frequency mode.
摘要翻译：本文描述的无线通信设备和相应的方法选择性地在适合于EDGE网络的单频模式与诸如适用于多载波EDGE网络的多频模式之间进行切换。因此，发送无线通信设备选择性地在单频模式下使用的单信道映射单元与在多频模式下使用的多信道映射单元之间进行切换。多通道映射单元调制输入数据以输出多个相邻频率信道中的每一个的调制数据流，当组合时，产生具有降低的峰均比的多频信号。接收无线通信设备选择性地在单频模式下使用的单信道解调器和在多频模式下使用的多信道解调器之间进行切换。

8. 发明授权

US08099108B2 Mobile terminals including display screens capable of displaying maps and map display methods for mobile terminals 有权
标题翻译：移动终端包括能够显示移动终端的地图和地图显示方法的显示屏幕
公开(公告)号：US08099108B2
公开(公告)日：2012-01-17
申请号：US11776805
申请日：2007-07-12
申请人： William O. Camp, Jr. , Yojak Vasa
发明人： William O. Camp, Jr. , Yojak Vasa
IPC分类号： H04W24/00
CPC分类号： G01C21/367 , H04M3/42348 , H04M2201/38 , H04M2242/15 , H04M2242/30
摘要： A mobile terminal includes a communication module, a display screen, and control circuitry. The circuitry is configured to estimate a current geographic position of the mobile terminal, and to determine if the estimated current position of the mobile terminal is within a boundary of geographic map information stored in the mobile terminal. The circuitry is further configured to retrieve additional geographic map information including the current position of the mobile terminal using the communication module if the current position of the mobile terminal is not within the boundary of the stored geographic map information.
摘要翻译：移动终端包括通信模块，显示屏和控制电路。电路被配置为估计移动终端的当前地理位置，并且确定移动终端的估计当前位置是否在存储在移动终端中的地理地图信息的边界内。电路还被配置为如果移动终端的当前位置不在所存储的地理地图信息的边界内，则检索包括使用通信模块的移动终端的当前位置的附加地理地图信息。

9. 发明授权

US07969297B2 System and method for determining positioning information via modulated light 有权
标题翻译：用于通过调制光确定定位信息的系统和方法
公开(公告)号：US07969297B2
公开(公告)日：2011-06-28
申请号：US12130249
申请日：2008-05-30
申请人： Jacobus C. Haartsen , William O. Camp, Jr. , Phillip Marc Johnson , Norbert Donald Ingram
发明人： Jacobus C. Haartsen , William O. Camp, Jr. , Phillip Marc Johnson , Norbert Donald Ingram
IPC分类号： G08B1/00
CPC分类号： H04B10/116 , G01S1/70 , H04B10/1149 , H05B37/0272
摘要： Light sources are affixed at appropriate positions in a multilevel structure or in an obstructed environment. The light sources generate modulated light signals, such as controlled light-emitting diodes, which identify the positions of the light sources by their three-dimensional global positioning coordinates and/or equivalent representation that specifies their in situ locations in the environment. Mobile communication devices, upon receiving the light signals, can derive spatial positioning information and transmit such information to a remote location, such as an emergency response system.
摘要翻译：光源被固定在多层结构或阻塞环境中的适当位置。光源产生调制光信号，例如受控发光二极管，其通过它们的三维全球定位坐标和/或指定其在环境中的原位位置的等效表示来识别光源的位置。移动通信设备在接收到光信号时，可以导出空间定位信息并将这些信息发送到诸如应急响应系统之类的远程位置。

10. 发明授权

US07899106B2 Mitigating OFDM receiver interference caused by intermittent signal transmission 有权
标题翻译：减少由间歇信号传输引起的OFDM接收机干扰
公开(公告)号：US07899106B2
公开(公告)日：2011-03-01
申请号：US11468822
申请日：2006-08-31
申请人： William O. Camp, Jr.
发明人： William O. Camp, Jr.
IPC分类号： H04B1/00
CPC分类号： H04L27/2647 , H04L5/0048
摘要： Degradation of the OFDM signal carrying DVB-H content, caused by GSM burst transmission, is overcome without the need for hardware to constrain the GSM transmission spectrum by the modulating of the OFDM signal and utilizing the interleaving and Forward Error Correction (FEC) defined in the DVB-H standard to correct the errors caused by GSM transmission interference. A pattern in time and frequency of the scattered pilots in the OFDM signal is detected during a period of no burst transmission. During burst transmissions from the transmitter, scattered pilots are inserted into the received OFDM signal according to the pattern. An FFT demodulator utilizes the inserted scattered pilots to perform frame synchronization when the OFDM signal is degraded by interference from the burst transmission. The demodulated signal is de-interleaved, and bit errors due to the burst transmission interference are corrected by FEC decoders.
摘要翻译：克服由GSM突发传输引起的承载DVB-H内容的OFDM信号的降级，而不需要硬件通过OFDM信号的调制来约束GSM传输频谱，并且利用以下定义的交织和前向纠错（FEC） DVB-H标准来纠正由GSM传输干扰引起的错误。在无突发传输期间，检测OFDM信号中散射导频的时间和频率模式。在来自发射机的突发传输期间，根据模式将散射导频插入接收的OFDM信号。当OFDM信号被来自突发传输的干扰降低时，FFT解调器利用插入的散射导频执行帧同步。解调信号被解交织，并且由FEC解码器校正由于突发传输干扰引起的位错误。

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