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1. 发明授权

US08447249B1 System and method for providing open loop transmit power control 有权
标题翻译：提供开环发射功率控制的系统和方法
公开(公告)号：US08447249B1
公开(公告)日：2013-05-21
申请号：US13043882
申请日：2011-03-09
申请人： Tuofu Lu , Kai Shi , Richard T. Chang , Sang-Min Lee , Joe I. Jamp , Paul J. Husted , Praveen Dua
发明人： Tuofu Lu , Kai Shi , Richard T. Chang , Sang-Min Lee , Joe I. Jamp , Paul J. Husted , Praveen Dua
IPC分类号： H04B1/04
CPC分类号： H03G3/3042
摘要： This disclosure is directed to systems and methods that provide control of transmitted signal power that do not require the use of an external power detector. By determining the expected transmit power based upon conditions such as temperature or voltage, the settings of the transmitters amplifier can be adjusted to more closely match the desired transmit power.
摘要翻译：本公开涉及提供对不需要使用外部功率检测器的发射信号功率的控制的系统和方法。通过基于诸如温度或电压的条件确定预期发射功率，可以调整发射机放大器的设置以更接近地匹配期望的发射功率。

2. 发明授权

US08514595B1 Switching power supply operation with reduced harmonic interference 失效
标题翻译：开关电源运行，减少谐波干扰
公开(公告)号：US08514595B1
公开(公告)日：2013-08-20
申请号：US12534996
申请日：2009-08-04
申请人： Paul J. Husted , Richard T. Chang
发明人： Paul J. Husted , Richard T. Chang
IPC分类号： H02J1/02
CPC分类号： H02M1/44
摘要： Methods of calibrating and operating a switching power supply in an electronic system are disclosed. A switching power supply is calibrated to determine a switching frequency. Harmonic frequencies that are multiples of the switching frequency are determined. A further determination is made as to whether any of the harmonic frequencies falls within one of one or more frequency bands of interest. A second switching frequency is determined such that none of its corresponding harmonic frequencies falls within a frequency band of interest. During operation of the system, the switching power supply is configured to operate at the second switching frequency if operation occurs within one of the frequency bands of interest.
摘要翻译：公开了一种在电子系统中校准和操作开关电源的方法。开关电源被校准以确定开关频率。确定开关频率倍数的谐波频率。进一步确定任何谐波频率是否落入一个或多个感兴趣频带中的一个。确定第二切换频率，使得其相应的谐波频率中没有一个落入感兴趣的频带内。在系统运行期间，如果在感兴趣的频带之一内发生操作，则开关电源被配置为以第二开关频率工作。

3. 发明申请

US20130229930A1 PROXIMITY-BASED WIRELESS HANDSHAKING FOR CONNECTION ESTABLISHMENT 有权
标题翻译：基于接力的无线连接建立
公开(公告)号：US20130229930A1
公开(公告)日：2013-09-05
申请号：US13411139
申请日：2012-03-02
申请人： Enis Akay , Richard T. Chang , Meng-Ta Hsu , Yu-Chang Hu , Philip F. Kearney
发明人： Enis Akay , Richard T. Chang , Meng-Ta Hsu , Yu-Chang Hu , Philip F. Kearney
IPC分类号： H04W24/00 , H04W76/00
CPC分类号： H04W52/0245 , H04L63/0492 , H04W12/04 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/22
摘要： A first network device can implement functionality to establish a proximity-based wireless connection with a second network device. It can be determined whether the second network device is within a threshold detection distance from the first network device based on a signal strength associated with RF signals received from the second network device or based on detecting RF saturation at the first network device. Device credentials associated with the first network device can be transmitted to the second network device at a reduced transmit power level in response to determining that the second network device is within the threshold detection distance from the first network device. A communication link can be established between the first network device and the second network device based, at least in part, on the device credentials associated with the first network device and device credentials received from the second network device.
摘要翻译：第一网络设备可以实现与第二网络设备建立基于邻近的无线连接的功能。基于与从第二网络设备接收的RF信号相关联的信号强度，或者基于检测第一网络设备的RF饱和度，可以确定第二网络设备是否处于距离第一网络设备的阈值检测距离内。响应于确定第二网络设备处于距离第一网络设备的阈值检测距离之内，与第一网络设备相关联的设备凭证可以以降低的发送功率电平被发送到第二网络设备。至少部分地基于与第一网络设备相关联的设备凭证和从第二网络设备接收的设备凭证，可以在第一网络设备和第二网络设备之间建立通信链路。

4. 发明授权

US08774041B2 Proximity-based wireless handshaking for connection establishment 有权
标题翻译：基于接近的无线握手，用于连接建立
公开(公告)号：US08774041B2
公开(公告)日：2014-07-08
申请号：US13411139
申请日：2012-03-02
申请人： Enis Akay , Richard T. Chang , Meng-Ta Hsu , Yu-Chang Hu , Philip F. Kearney
发明人： Enis Akay , Richard T. Chang , Meng-Ta Hsu , Yu-Chang Hu , Philip F. Kearney
IPC分类号： H04W24/00 , H04W52/02
CPC分类号： H04W52/0245 , H04L63/0492 , H04W12/04 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/22
摘要： A first network device can implement functionality to establish a proximity-based wireless connection with a second network device. It can be determined whether the second network device is within a threshold detection distance from the first network device based on a signal strength associated with RF signals received from the second network device or based on detecting RF saturation at the first network device. Device credentials associated with the first network device can be transmitted to the second network device at a reduced transmit power level in response to determining that the second network device is within the threshold detection distance from the first network device. A communication link can be established between the first network device and the second network device based, at least in part, on the device credentials associated with the first network device and device credentials received from the second network device.
摘要翻译：第一网络设备可以实现与第二网络设备建立基于邻近的无线连接的功能。基于与从第二网络设备接收的RF信号相关联的信号强度，或者基于检测第一网络设备的RF饱和度，可以确定第二网络设备是否处于距离第一网络设备的阈值检测距离内。响应于确定第二网络设备处于距离第一网络设备的阈值检测距离之内，与第一网络设备相关联的设备凭证可以以降低的发送功率电平被发送到第二网络设备。至少部分地基于与第一网络设备相关联的设备凭证和从第二网络设备接收的设备凭证，可以在第一网络设备和第二网络设备之间建立通信链路。

5. 发明授权

US08135357B1 Integrated transmitter/receiver switch with impedance matching network 有权
标题翻译：具有阻抗匹配网络的集成发射器/接收器开关
公开(公告)号：US08135357B1
公开(公告)日：2012-03-13
申请号：US11300773
申请日：2005-12-13
申请人： Richard T. Chang , David Weber
发明人： Richard T. Chang , David Weber
IPC分类号： H04B1/44
CPC分类号： H04B1/48
摘要： A switchable inductor-capacitor-inductor (L-C-L) network, which includes an integrated T/R switch, can advantageously bridge a PA and an LNA of a wireless device. The first inductor can function as an RF choke that provides power to the PA. In one embodiment, the first inductor can be advantageously implemented using the bond wires already attached to the PA, thereby requiring no additional inductors to provide the integrated T/R switch and minimizing use of valuable silicon area. The second inductor can function as a source inductor for and cancel an input parasitic capacitance of the LNA. A set of capacitors can act as blocking capacitors to provide DC isolation between the LNA and the PA, thereby protecting the LNA from high voltages. The L-C-L network can also advantageously function as an impedance matching network for at least one of the PA and the LNA.
摘要翻译：包括集成T / R开关的可切换电感 - 电容 - 电感（L-C-L）网络可有利地桥接无线设备的PA和LNA。第一个电感器可以作为向PA提供电源的RF扼流圈。在一个实施例中，可以使用已经连接到PA的接合线来有利地实现第一电感器，从而不需要额外的电感器来提供集成的T / R开关并最小化有用的硅面积的使用。第二个电感器可以作为源电感器，用于和消除LNA的输入寄生电容。一组电容器可以作为隔离电容器，以在LNA和PA之间提供直流隔离，从而保护LNA免受高压。 L-C-L网络还可以有利地用作PA和LNA中的至少一个的阻抗匹配网络。

6. 外观设计

USD335702S Electronic ozonation unit 失效
公开(公告)号：USD335702S
公开(公告)日：1993-05-18
申请号：US724962
申请日：1991-07-02
申请人： Richard T. Chang
设计人： Richard T. Chang

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