公开(公告)号：US07336935B2

公开(公告)日：2008-02-26

申请号：US11155719

申请日：2005-06-20

申请人： David Ho ,  Sheng Xiao ,  Chih-Chung Hung

发明人： David Ho ,  Sheng Xiao ,  Chih-Chung Hung

IPC分类号： H04B1/04

CPC分类号： H04W52/52 ,  H03G3/3042 ,  H04W52/245

摘要： The present invention is to provide a dynamic power control circuit for a wireless communication device, which comprises a power detector, a comparator, a low pass filter and an adder disposed between a radio frequency auto-gain control circuit and an antenna thereof. A reference voltage is imposed on the adder to enable the power detector to detect and output signal voltage to the comparator which compares the received voltage with a specified received voltage limit and outputs a reference voltage to the low pass filter for filtering out the noise of the reference voltage and outputting it to the adder. The adder then adds the reference voltage and the specified reference voltage, and outputs the result to the radio frequency auto-gain control circuit for controlling the output power corresponding to the strength of the received signals.

摘要翻译： 本发明提供一种用于无线通信设备的动态功率控制电路，其包括设置在射频自动增益控制电路及其天线之间的功率检测器，比较器，低通滤波器和加法器。 对加法器施加参考电压，使得功率检测器能够检测并输出信号电压给比较器，该比较器将接收电压与指定的接收电压限制进行比较，并将参考电压输出到低通滤波器，以滤除 参考电压并将其输出到加法器。 然后加法器将参考电压和指定的参考电压相加，并将结果输出到射频自动增益控制电路，用于控制与接收信号的强度对应的输出功率。

公开(公告)号：US20060057979A1

公开(公告)日：2006-03-16

申请号：US11155719

申请日：2005-06-20

申请人： David Ho ,  Sheng Xiao ,  Chih-Chung Hung

发明人： David Ho ,  Sheng Xiao ,  Chih-Chung Hung

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H04W52/52 ,  H03G3/3042 ,  H04W52/245

摘要： The present invention is to provide a dynamic power control circuit for a wireless communication device, which comprises a power detector, a comparator, a low pass filter and an adder disposed between a radio frequency auto-gain control circuit and an antenna thereof. A reference voltage is imposed on the adder to enable the power detector to detect and output signal voltage to the comparator which compares the received voltage with a specified received voltage limit and outputs a reference voltage to the low pass filter for filtering out the noise of the reference voltage and outputting it to the adder. The adder then adds the reference voltage and the specified reference voltage, and outputs the result to the radio frequency auto-gain control circuit for controlling the output power corresponding to the strength of the received signals.

摘要翻译： 本发明提供一种用于无线通信设备的动态功率控制电路，其包括设置在射频自动增益控制电路及其天线之间的功率检测器，比较器，低通滤波器和加法器。 对加法器施加参考电压，使得功率检测器能够检测并输出信号电压给比较器，该比较器将接收电压与指定的接收电压限制进行比较，并将参考电压输出到低通滤波器，以滤除 参考电压并将其输出到加法器。 然后加法器将参考电压和指定的参考电压相加，并将结果输出到射频自动增益控制电路，用于控制与接收信号的强度对应的输出功率。

公开(公告)号：US20060050009A1

公开(公告)日：2006-03-09

申请号：US11167476

申请日：2005-06-28

申请人： David Ho ,  Dian Gu ,  Chih-Chung Hung

发明人： David Ho ,  Dian Gu ,  Chih-Chung Hung

IPC分类号： H01Q1/36

CPC分类号： H01Q9/30 ,  H01Q1/362 ,  H01Q5/357 ,  H01Q5/371 ,  H01Q5/40

摘要： The present invention is to provide a combination antenna having multi-mode and multi-band arrangements, which comprises a conductive seat; a non-uniform helical antenna extending from one end of the conductive seat; and a pole antenna extending from one end of the conductive seat through the helical antenna, enabling to be tuned to three or more resonant frequencies through tuning the helical antenna to a plurality of resonant frequencies and tuning the pole antenna to a plurality of resonant frequencies different from that to which the helical antenna is tuned.

摘要翻译： 本发明提供一种具有多模式和多频带布置的组合天线，其包括导电座; 从导电座的一端延伸的不均匀的螺旋天线; 以及从导电座的一端通过螺旋天线延伸的极天线，能够通过将螺旋天线调谐到多个谐振频率并将极天线调谐到多个谐振频率而被调谐到三个或更多个谐振频率 从螺旋天线调谐到的那个。

公开(公告)号：US07262738B2

公开(公告)日：2007-08-28

申请号：US11167476

申请日：2005-06-28

申请人： David Ho ,  Dian Gu ,  Chih-Chung Hung

发明人： David Ho ,  Dian Gu ,  Chih-Chung Hung

IPC分类号： H01Q21/00

CPC分类号： H01Q9/30 ,  H01Q1/362 ,  H01Q5/357 ,  H01Q5/371 ,  H01Q5/40

摘要： The present invention is to provide a combination antenna having multi-mode and multi-band arrangements, which comprises a conductive seat; a non-uniform helical antenna extending from one end of the conductive seat; and a pole antenna extending from one end of the conductive seat through the helical antenna, enabling to be tuned to three or more resonant frequencies through tuning the helical antenna to a plurality of resonant frequencies and tuning the pole antenna to a plurality of resonant frequencies different from that to which the helical antenna is tuned.

摘要翻译： 本发明提供一种具有多模式和多频带布置的组合天线，其包括导电座; 从导电座的一端延伸的不均匀的螺旋天线; 以及从导电座的一端通过螺旋天线延伸的极天线，能够通过将螺旋天线调谐到多个谐振频率并将极天线调谐到多个谐振频率而被调谐到三个或更多个谐振频率 从螺旋天线调谐到的那个。

公开(公告)号：US20060043172A1

公开(公告)日：2006-03-02

申请号：US11178437

申请日：2005-07-12

申请人： David Ho ,  Hai-Feng Tang ,  Chih-Chung Hung

发明人： David Ho ,  Hai-Feng Tang ,  Chih-Chung Hung

IPC分类号： G06K5/00

CPC分类号： G07F7/0866 ,  G06Q20/32 ,  G06Q20/3226 ,  G06Q20/327

摘要： The present invention relates to an apparatus for showing disposable amount of an electronic ticket card on a portable electronic device and wirelessly adding value to the electronic ticket card by means of the portable electronic device and a method therefore, wherein the electronic ticket card includes a non-contact value-adding memory chip, a sensor coil, a processor having a serial communication module and an auxiliary circuit, fare per transaction is adapted to be wirelessly deducted from an amount stored in the non-contact value-adding memory chip by the sensor coil, and the serial communication module is adapted to cooperate with the auxiliary circuit to enable the electronic ticket card to communicate with the portable electronic device through serial communication.

摘要翻译： 本发明涉及一种用于在便携式电子设备上显示电子票卡的一次性量的设备，并且借助于便携式电子设备向电子票卡无线增加价值的设备及其方法，其中电子票卡包括非 - 接触增值存储器芯片，传感器线圈，具有串行通信模块和辅助电路的处理器，每次交易的费用适于从存储在非接触式附加值存储器芯片中的量被传感器无线地扣除 线圈，并且串行通信模块适于与辅助电路协作，以使电子票卡能够通过串行通信与便携式电子设备进行通信。