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1. 发明授权

US07227484B2 Startup apparatus and technique for a wireless system that uses time domain isolation 有权
标题翻译：使用时域隔离的无线系统的启动装置和技术
公开(公告)号：US07227484B2
公开(公告)日：2007-06-05
申请号：US11172213
申请日：2005-06-29
申请人： David O. Anderton , Jeffrey L. Yiin , Xue-Mei Gong
发明人： David O. Anderton , Jeffrey L. Yiin , Xue-Mei Gong
IPC分类号： H03M1/66
CPC分类号： H04B15/00 , H04B1/40
摘要： A technique includes providing a butter to receive data from a processor of a wireless device in response to an active mode of the processor and selectively coupling an input terminal of a filter to the buffer based on a status of the buffer. The techniciue may be used with a wireless system that includes a digital signal processor, a buffer, a wireless interface and a switch. The buffer receives data from the digital signal processor in response to an active mode of the digital signal processor. The switch selectively couples a terminal of the wireless interface to the buffer in response to a determination of a status of the buffer.
摘要翻译：一种技术包括提供黄油以响应于处理器的活动模式从无线设备的处理器接收数据，并且基于缓冲器的状态选择性地将过滤器的输入端子耦合到缓冲器。该技术可以与包括数字信号处理器，缓冲器，无线接口和开关的无线系统一起使用。缓冲器响应于数字信号处理器的活动模式从数字信号处理器接收数据。响应于确定缓冲器的状态，开关选择性地将无线接口的终端耦合到缓冲器。

2. 发明授权

US07512157B2 Synchronizing a modem and vocoder of a mobile station 有权
标题翻译：同步移动台的调制解调器和声码器
公开(公告)号：US07512157B2
公开(公告)日：2009-03-31
申请号：US11153065
申请日：2005-06-15
申请人： David O. Anderton , Jeffrey L. Yiin
发明人： David O. Anderton , Jeffrey L. Yiin
IPC分类号： H04J3/06
CPC分类号： H04J3/0632
摘要： In one embodiment, the present invention includes a method for determining a level of a buffer that stores data samples. The level may be determined at a predetermined position of a data frame sequence. Based on the level of the buffer at this position, a vocoder and modem of a mobile station may be synchronized. One or both of the vocoder and modem may be adjusted to attain the synchronization. Thus a rate mismatch between the vocoder and modem may be resolved.
摘要翻译：在一个实施例中，本发明包括一种用于确定存储数据样本的缓冲器的级别的方法。可以在数据帧序列的预定位置确定电平。基于该位置的缓冲器的电平，移动站的声码器和调制解调器可以被同步。可以调整声码器和调制解调器中的一个或两个以实现同步。因此，声码器和调制解调器之间的速率失配可以被解决。

3. 发明授权

US09307318B2 Audio processor circuits for acoustic echo cancellation and method therefor 有权
标题翻译：用于声学回声消除的音频处理器电路及其方法
公开(公告)号：US09307318B2
公开(公告)日：2016-04-05
申请号：US13788471
申请日：2013-03-07
申请人： David O. Anderton , Kevin Hung , Dana Taipale
发明人： David O. Anderton , Kevin Hung , Dana Taipale
IPC分类号： H04B3/20 , H04M9/08 , H04R3/02 , H04B3/23
CPC分类号： H04R3/02 , H04B3/23 , H04M9/082
摘要： In one form, an audio processor circuit includes a first digital signal processing circuit, a second digital signal processing circuit, and an interleaver. The first digital signal processing circuit has an input for receiving a far-end audio signal, and an output. The second digital signal processing circuit has an input for receiving a digital near-end audio signal, and an output. The interleaver has a first input coupled to the output of the first digital signal processing circuit, a second input coupled to the output of the second digital signal processing circuit, and an output for alternatively providing signals received from the first and second inputs to the output.
摘要翻译：在一种形式中，音频处理器电路包括第一数字信号处理电路，第二数字信号处理电路和交织器。第一数字信号处理电路具有用于接收远端音频信号的输入和输出。第二数字信号处理电路具有用于接收数字近端音频信号的输入和输出。交织器具有耦合到第一数字信号处理电路的输出的第一输入，耦合到第二数字信号处理电路的输出的第二输入和用于交替地将从第一和第二输入接收的信号提供给输出的输出。

4. 发明授权

US08718645B2 Managing audio during a handover in a wireless system 失效
标题翻译：在无线系统切换期间管理音频
公开(公告)号：US08718645B2
公开(公告)日：2014-05-06
申请号：US11476485
申请日：2006-06-28
申请人： David O. Anderton , Shaojie Chen
发明人： David O. Anderton , Shaojie Chen
IPC分类号： H04W36/00
CPC分类号： H04W36/08 , H04W56/00
摘要： In one embodiment, the present invention includes a method for determining if a mobile station is to be resynchronized on a handover from a first serving cell to a second serving cell. If so, a first downlink hardware storage may be drained to a predetermined level. This level may then be maintained during the resynchronization.
摘要翻译：在一个实施例中，本发明包括一种用于确定在从第一服务小区到第二服务小区的切换时移动站是否将被重新同步的方法。如果是这样，则可以将第一下行链路硬件存储器排出到预定级别。然后可以在重新同步期间维持该级别。

5. 发明授权

US07414560B2 Wireless communication system including an audio underflow protection mechanism operative with time domain isolation 失效
标题翻译：无线通信系统包括具有时域隔离功能的音频下溢保护机制
公开(公告)号：US07414560B2
公开(公告)日：2008-08-19
申请号：US11744801
申请日：2007-05-04
申请人： Shaojie Chen , Wasim Quddus , David O. Anderton
发明人： Shaojie Chen , Wasim Quddus , David O. Anderton
IPC分类号： H03M1/66
CPC分类号： H04B1/40 , H04B15/00
摘要： A wireless communication device reduces undesired audio underflow in a digital to analog receive path that employs time domain isolation. One or more buffers in the receive path receive processed audio samples from a signal processor. A control circuit senses when the buffers in the receive path are substantially empty. In response to a substantially empty determination by the control circuit, the control circuit instructs one of the buffers to repeat the last processed audio sample which that buffer received to reduce or avoid audio underflow.
摘要翻译：无线通信设备在采用时域隔离的数字到模拟接收路径中减少不期望的音频下溢。接收路径中的一个或多个缓冲器从信号处理器接收经处理的音频样本。控制电路检测接收路径中的缓冲器何时基本上为空。响应于控制电路的基本上空的确定，控制电路指示缓冲器之一重复该缓冲器接收的最后处理的音频样本以减少或避免音频下溢。

6. 发明授权

US07047185B1 Method and apparatus for dynamically switching between speech coders of a mobile unit as a function of received signal quality 有权
标题翻译：作为接收信号质量的函数的用于在移动单元的语音编码器之间动态切换的方法和装置
公开(公告)号：US07047185B1
公开(公告)日：2006-05-16
申请号：US09153631
申请日：1998-09-15
申请人： Karim Younes , David O. Anderton
发明人： Karim Younes , David O. Anderton
IPC分类号： G10L19/00
CPC分类号： H04W52/28 , H04L1/0014
摘要： A power management system for a mobile unit wherein the mobile unit detects the quality of the signals received from the base station. Based on this signal quality, the mobile unit determines if the voice data could be adequately transmitted using a secondary speech coder. If the transmission quality is adequate, the mobile unit switches from a primary speech coder to a secondary speech coder. The secondary speech coder is compatible with the primary speech coder, but consumes significantly less battery power when coding and decoding the voice data. The mobile unit may alternatively monitor the amount of processor usage. If the processor usage exceeds a threshold level, the mobile unit switches from the primary speech coder to the secondary speech coder.
摘要翻译：一种用于移动单元的电源管理系统，其中移动单元检测从基站接收的信号的质量。基于该信号质量，移动单元确定语音数据是否可以使用辅助语音编码器进行适当的传输。如果传输质量足够，则移动单元从主要语音编码器切换到辅助语音编码器。二次语音编码器与主要语音编码器兼容，但在对语音数据进行编码和解码时消耗的电池功率明显降低。移动单元可以替代地监视处理器使用量。如果处理器使用率超过阈值水平，则移动单元从主要语音编码器切换到辅助语音编码器。

7. 发明授权

US07720455B2 Sidetone generation for a wireless system that uses time domain isolation 有权
标题翻译：使用时域隔离的无线系统的侧音生成
公开(公告)号：US07720455B2
公开(公告)日：2010-05-18
申请号：US11479080
申请日：2006-06-30
申请人： David O. Anderton
发明人： David O. Anderton
IPC分类号： H04B7/00
CPC分类号： H04B15/00 , H04B2215/064 , H04B2215/066
摘要： A technique includes providing a sidetone path to generate sidetone content in response to audio data and disabling at least part of the sidetone path during an active mode of a radio. The technique includes storing the sidetone content in an outgoing audio buffer that is operational during the active mode of the radio and establishing a delay in the sidetone path to prevent the outgoing audio buffer from being depleted of the sidetone content during the active mode of the radio.
摘要翻译：一种技术包括提供侧音路径以响应于音频数据产生侧音内容，并且在无线电的活动模式期间禁用至少部分侧音路径。该技术包括将侧音内容存储在在无线电的活动模式期间可操作的输出音频缓冲器中，并且在无线电的活动模式期间建立侧音通路中的延迟以防止输出音频缓冲器耗尽侧音内容。

8. 发明授权

US06212227B1 Constant envelope modulation for splitterless DSL transmission 失效
标题翻译：用于无分路器DSL传输的恒定包络调制
公开(公告)号：US06212227B1
公开(公告)日：2001-04-03
申请号：US08982400
申请日：1997-12-02
申请人： Kenneth D. Ko , David O. Anderton , Ismail I. Eldumiati , Steven A. Gronemeyer , Don L. Harmer , P. Michael Henderson , Joel D. Peshkin , Raphael Rahamim , Frederic M. Stubbe , John S. Walley , Kenneth S. Walley , Yongbing Wan , Edward S. Zuranski , Jamal Haque , Anthony A. Tzouris , Shrenik P. Patravali , Ganning Yang
发明人： Kenneth D. Ko , David O. Anderton , Ismail I. Eldumiati , Steven A. Gronemeyer , Don L. Harmer , P. Michael Henderson , Joel D. Peshkin , Raphael Rahamim , Frederic M. Stubbe , John S. Walley , Kenneth S. Walley , Yongbing Wan , Edward S. Zuranski , Jamal Haque , Anthony A. Tzouris , Shrenik P. Patravali , Ganning Yang
IPC分类号： H04B138
CPC分类号： H04M11/062
摘要： A digital subscriber line (DSL) communication system that utilizes the high frequency band of a standard telephone line does not require the use of a plain old telephone service (POTS) splitter in the resident's home, which provided isolation between the POTS frequency band (0 to 4 kHz) and the DSL frequency band. Digital signal processing techniques are utilized to adapt to varying subscriber line conditions due to POTS telephone equipment. The digital signal processing techniques eliminate the need for a splitter by reducing susceptibility to distortion due to varying subscriber line characteristics. The digital subscriber line modem utilizes constant envelope modulated signals and frequency division multiplexing, where the constant envelope modulations lessens the intermodulation distortion products due to DSL signals that are transmitted by the modem and which may result in audible noise at the POTS telephone equipment due to non-linearities of the POTS telephone equipment.
摘要翻译：使用标准电话线的高频带的数字用户线（DSL）通信系统不需要在居民的家中使用普通老式电话服务（POTS）分离器，这提供了POTS频带（0 到4kHz）和DSL频带。利用数字信号处理技术来适应由POTS电话设备引起的不同用户线路状况。数字信号处理技术通过减少由于不同的用户线路特性引起的失真的敏感性而消除对分路器的需要。数字用户线路调制解调器利用恒定包络调制信号和频分复用，其中恒定包络调制由于由调制解调器发送的DSL信号而减少互调失真产物，并且可能由于非线性调制信号而导致在POTS电话设备处的可听见的噪声 POTS电话设备的线性度。

9. 发明授权

US5243438A Facsimile compression for transmission 失效
标题翻译：传真压缩传输
公开(公告)号：US5243438A
公开(公告)日：1993-09-07
申请号：US864188
申请日：1992-04-03
申请人： David O. Anderton , Ronald L. Daggett
发明人： David O. Anderton , Ronald L. Daggett
IPC分类号： H04N1/00 , H04N1/327 , H04N1/41 , H04N7/26
CPC分类号： H04N19/90 , H04N1/001 , H04N1/32702
摘要： A transmission arrangement is disclosed which facilitates compression of modem modulated facsimile signals for transmission on digital facilities. The presence of a facsimile call is detected and facsimile control messages are obtained by demodulating and interpreting the facsimile call control protocol. A controller is responsive to the obtained control messages for controlling a voiceband encoder to encode the control portion of the facsimile call and for controlling a so-called facsimile page demodulator to demodulate any facsimile page portions of the facsimile call to obtain a baseband digital bit stream. The encoded control portion of the facsimile call and the baseband digital bit stream representative of the demodulated, i.e., compressed, facsimile page portion of the facsimile call are transmitted along with control information (as side information) to a receiver. At the receiver, a replica of the original modem modulated facsimile signal is reconstructed in response to the control information and by decoding the control portion of the facsimile call and by remodulating the digital bit stream representative of the facsimile page portion of the facsimile call.
摘要翻译：公开了一种便于压缩调制传真信号以便在数字设备上传输的传输装置。检测到传真呼叫的存在，并且通过解调和解释传真呼叫控制协议来获得传真控制消息。控制器响应于所获得的控制消息，用于控制语音频带编码器对传真呼叫的控制部分进行编码，并且用于控制所谓的传真机页面解调器以解调传真呼叫的任何传真页面部分，以获得基带数字比特流。传真呼叫的编码控制部分和表示传真呼叫的解调的，即压缩的传真页面部分的基带数字比特流与控制信息（作为辅助信息）一起被传送到接收机。在接收机处，响应于控制信息重建原始调制解调器调制传真信号的副本，并且通过对传真呼叫的控制部分进行解码以及通过重新调制表示传真呼叫的传真页面部分的数字比特流来重构。

10. 发明授权

US08538417B2 Performing diagnostics in a wireless system 有权
标题翻译：在无线系统中执行诊断
公开(公告)号：US08538417B2
公开(公告)日：2013-09-17
申请号：US13454907
申请日：2012-04-24
申请人： David O. Anderton
发明人： David O. Anderton
IPC分类号： H04W24/00
CPC分类号： H04W24/00 , H04M1/24 , H04M1/72522
摘要： In one embodiment, the present invention includes an apparatus for permitting diagnostic testing of a wireless device. The apparatus may include a first switch to route diagnostic information or acoustic information received from a processor of the device, a codec coupled to the first switch to code the routed diagnostic information or acoustic information, and a second switch coupled to the codec to route the coded diagnostic information to a first port of the wireless device and to route the coded acoustic information to the first port or a second port of the wireless device.
摘要翻译：在一个实施例中，本发明包括用于允许无线设备的诊断测试的装置。该设备可以包括第一交换机以路由从设备的处理器接收的诊断信息或声学信息，耦合到第一交换机的编解码器来编码路由的诊断信息或声学信息，以及耦合到编解码器的第二开关以路由将编码的诊断信息发送到无线设备的第一端口并且将编码的声学信息路由到无线设备的第一端口或第二端口。

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