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1. 发明授权

US09432951B2 Transmit power control algorithms for sources and sinks in a multi-link session 有权
标题翻译：在多链路会话中发送源和汇的功率控制算法
公开(公告)号：US09432951B2
公开(公告)日：2016-08-30
申请号：US13097736
申请日：2011-04-29
申请人： Ralph D. Mason , Renyuan Li
发明人： Ralph D. Mason , Renyuan Li
IPC分类号： H04W52/24 , H04B17/318 , H04W52/48
CPC分类号： H04W52/245 , H04B17/318 , H04W52/48
摘要： Transmit power control functionality in wireless audio systems may be implemented by way of a Transmit Power Control (TPC) algorithm devised to control power for both source and sinks in a multi sink session, to reduce power consumption. Information may be passed back and forth between the source and sink devices to adjust power based on the shared information. The TPC algorithm may allow power control on both ends of an RF link, and may have multiple sink devices communicating with a source device. Furthermore, the multiple sink devices and the source device may each be operating at different power levels, and adjust their respective power levels as instructed by the TPC algorithm. Power control is therefore implemented on both ends of the link, where multiple sources and sinks may all operate at different power levels, and all individually adjust their respective power levels.
摘要翻译：无线音频系统中的发射功率控制功能可以通过发射功率控制（TPC）算法来实现，该算法设计用于控制多宿节点中的源和宿的功率，以降低功耗。可以在源和宿设备之间来回传递信息，以基于共享信息来调整功率。 TPC算法可以允许RF链路两端的功率控制，并且可以具有与源设备通信的多个宿设备。此外，多个宿设备和源设备可以各自以不同的功率水平操作，并且如TPC算法所指示的那样调整它们各自的功率水平。因此，在链路的两端实现功率控制，其中多个源和汇可以在不同的功率级别操作，并且都单独地调整它们各自的功率级别。

2. 发明申请

US20090262709A1 WIRELESS COMMUNICATIONS SYSTEMS AND CHANNEL-SWITCHING METHOD 有权
标题翻译：无线通信系统和信道交换方法
公开(公告)号：US20090262709A1
公开(公告)日：2009-10-22
申请号：US12106098
申请日：2008-04-18
申请人： Ralph Dickson Mason , Renyuan Li , Jean-Paul Rene DeCruyenaere
发明人： Ralph Dickson Mason , Renyuan Li , Jean-Paul Rene DeCruyenaere
IPC分类号： H04J3/06 , H04Q7/00
CPC分类号： H04W36/06 , H04L1/1607 , H04L1/20 , H04W36/30
摘要： A wireless communications system and channel-switching method are disclosed herein. A source device and multiple sink devices independently maintain respective counters which track data packet errors. Each device independently switches channels only after its counter reaches a channel-switching threshold. The new channel switched-to is either determined by an indexed ordering of the available channels or by reference to a global clock maintained by each of the devices. Accordingly, all devices quickly arrive at a common channel. The system switches channels only when necessary and resolves quickly to a mutually acceptable channel. Therefore, unnecessary channel switching is minimized and data throughput is optimized.
摘要翻译：本文公开了无线通信系统和信道切换方法。源设备和多个宿设备独立地维护跟踪数据分组错误的相应计数器。每个设备只有在其计数器达到通道切换阈值后才独立地切换通道。新的信道切换是由可用信道的索引排序或参考由每个设备维护的全局时钟确定的。因此，所有设备快速到达公共通道。系统仅在必要时切换通道，并快速解决相互可接受的通道。因此，不必要的信道切换被最小化并且数据吞吐量被优化。

3. 发明申请

US20120276942A1 Transmit Power Control Algorithms for Sources and Sinks in a Multi-Link Session 有权
标题翻译：用于多链路会话中的源和接收器的发射功率控制算法
公开(公告)号：US20120276942A1
公开(公告)日：2012-11-01
申请号：US13097736
申请日：2011-04-29
申请人： Ralph D. Mason , Renyuan Li
发明人： Ralph D. Mason , Renyuan Li
IPC分类号： H04W52/04
CPC分类号： H04W52/245 , H04B17/318 , H04W52/48
摘要： Transmit power control functionality in wireless audio systems may be implemented by way of a Transmit Power Control (TPC) algorithm devised to control power for both source and sinks in a multi sink session, to reduce power consumption. Information may be passed back and forth between the source and sink devices to adjust power based on the shared information. The TPC algorithm may allow power control on both ends of an RF link, and may have multiple sink devices communicating with a source device. Furthermore, the multiple sink devices and the source device may each be operating at different power levels, and adjust their respective power levels as instructed by the TPC algorithm. Power control is therefore implemented on both ends of the link, where multiple sources and sinks may all operate at different power levels, and all individually adjust their respective power levels.
摘要翻译：无线音频系统中的发射功率控制功能可以通过发射功率控制（TPC）算法来实现，该算法设计用于控制多宿节点中的源和宿的功率，以降低功耗。可以在源和宿设备之间来回传递信息，以基于共享信息来调整功率。 TPC算法可以允许RF链路两端的功率控制，并且可以具有与源设备通信的多个宿设备。此外，多个宿设备和源设备可以各自以不同的功率水平操作，并且如TPC算法所指示的那样调整它们各自的功率水平。因此，在链路的两端实现功率控制，其中多个源和汇可以在不同的功率级别操作，并且都单独地调整它们各自的功率级别。

4. 发明授权

US08553909B2 Low-power class D amplifier using multistate analog feedback loops 有权
标题翻译：低功耗D类放大器，采用多态模拟反馈回路
公开(公告)号：US08553909B2
公开(公告)日：2013-10-08
申请号：US13097690
申请日：2011-04-29
申请人： Justin L. Fortier , Ralph D. Mason , Renyuan Li , Christopher A. DeVries , Peter H. R. Popplewell , William Kung
发明人： Justin L. Fortier , Ralph D. Mason , Renyuan Li , Christopher A. DeVries , Peter H. R. Popplewell , William Kung
IPC分类号： H03F99/00
CPC分类号： H03F3/217
摘要： An audio amplifier system may include an audio CODEC/output (AOP) path featuring analog class-D amplifiers, and using Natural Sampling Pulse Width Modulation (PWM) to convert an analog input into a series of Rail-to-Rail pulses. The audio signal may be encoded in the average value of the PWM pulse train and may be recovered from the PWM signal by analog low pass filtering. The Class-D amplifiers may be designed with a negative feedback loop/network to compare the output signal with the input signal and suppress non-idealities introduced by the Class-D switching stage. Furthermore, operation of the AOP may be designed according to a separate signal transfer function and a separate noise transfer function, and 2nd order noise shaping may be performed at low power, with an optimized filter included in the feedback loop to achieve the best noise reduction at low power. Operation of the amplifier feedback network may be similar to that of a continuous time, low-pass delta-sigma modulator, but with a PWM loop wrapped around the class-D power amplifier.
摘要翻译：音频放大器系统可以包括具有模拟D类放大器的音频CODEC /输出（AOP）路径，并且使用自然采样脉宽调制（PWM）将模拟输入转换成一系列轨至轨脉冲。音频信号可以以PWM脉冲序列的平均值编码，并且可以通过模拟低通滤波从PWM信号中恢复。 D类放大器可以设计有负反馈回路/网络，以将输出信号与输入信号进行比较，并抑制D类切换级引入的非理想性。此外，可以根据单独的信号传递函数和单独的噪声传递函数来设计AOP的操作，并且可以以低功率执行二阶噪声整形，其中包括在反馈环路中的优化滤波器以实现最佳降噪在低功率。放大器反馈网络的操作可能类似于连续时间低通量Δ-Σ调制器的操作，但是使用包围D类功率放大器的PWM环路。

5. 发明申请

US20120275493A1 Low-Power Class D Amplifier Using Multistate Analog Feedback Loops 有权
标题翻译：低功耗D类放大器，采用多态模拟反馈回路
公开(公告)号：US20120275493A1
公开(公告)日：2012-11-01
申请号：US13097690
申请日：2011-04-29
申请人： Justin L. Fortier , Ralph D. Mason , Renyuan Li , Christopher A. Devries , Peter H. R. Popplewell , William Kung
发明人： Justin L. Fortier , Ralph D. Mason , Renyuan Li , Christopher A. Devries , Peter H. R. Popplewell , William Kung
IPC分类号： H04W88/02
CPC分类号： H03F3/217
摘要： An audio amplifier system may include an audio CODEC/output (AOP) path featuring analog class-D amplifiers, and using Natural Sampling Pulse Width Modulation (PWM) to convert an analog input into a series of Rail-to-Rail pulses. The audio signal may be encoded in the average value of the PWM pulse train and may be recovered from the PWM signal by analog low pass filtering. The Class-D amplifiers may be designed with a negative feedback loop/network to compare the output signal with the input signal and suppress non-idealities introduced by the Class-D switching stage. Furthermore, operation of the AOP may be designed according to a separate signal transfer function and a separate noise transfer function, and 2nd order noise shaping may be performed at low power, with an optimized filter included in the feedback loop to achieve the best noise reduction at low power. Operation of the amplifier feedback network may be similar to that of a continuous time, low-pass delta-sigma modulator, but with a PWM loop wrapped around the class-D power amplifier.
摘要翻译：音频放大器系统可以包括具有模拟D类放大器的音频CODEC /输出（AOP）路径，并且使用自然采样脉宽调制（PWM）将模拟输入转换成一系列轨至轨脉冲。音频信号可以以PWM脉冲序列的平均值编码，并且可以通过模拟低通滤波从PWM信号中恢复。 D类放大器可以设计有负反馈回路/网络，以将输出信号与输入信号进行比较，并抑制D类切换级引入的非理想性。此外，可以根据单独的信号传递函数和单独的噪声传递函数来设计AOP的操作，并且可以以低功率执行二阶噪声整形，其中包括在反馈环路中的优化滤波器以实现最佳降噪在低功率。放大器反馈网络的操作可能类似于连续时间低通量Δ-Σ调制器的操作，但是使用包围D类功率放大器的PWM环路。

6. 发明授权

US08265041B2 Wireless communications systems and channel-switching method 有权
标题翻译：无线通信系统和通道切换方式
公开(公告)号：US08265041B2
公开(公告)日：2012-09-11
申请号：US12106098
申请日：2008-04-18
申请人： Ralph Dickson Mason , Renyuan Li , Jean-Paul Rene Decruyenaere
发明人： Ralph Dickson Mason , Renyuan Li , Jean-Paul Rene Decruyenaere
IPC分类号： H04J3/00
CPC分类号： H04W36/06 , H04L1/1607 , H04L1/20 , H04W36/30
摘要： A wireless communications system and channel-switching method are disclosed herein. A source device and multiple sink devices independently maintain respective counters which track data packet errors. Each device independently switches channels only after its counter reaches a channel-switching threshold. The new channel switched-to is either determined by an indexed ordering of the available channels or by reference to a global clock maintained by each of the devices. Accordingly, all devices quickly arrive at a common channel. The system switches channels only when necessary and resolves quickly to a mutually acceptable channel. Therefore, unnecessary channel switching is minimized and data throughput is optimized.
摘要翻译：本文公开了无线通信系统和信道切换方法。源设备和多个宿设备独立地维护跟踪数据分组错误的相应计数器。每个设备只有在其计数器达到通道切换阈值后才独立地切换通道。新的信道切换是由可用信道的索引排序或参考由每个设备维护的全局时钟确定的。因此，所有设备快速到达公共通道。系统仅在必要时切换通道，并快速解决相互可接受的通道。因此，不必要的信道切换被最小化并且数据吞吐量被优化。

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