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    • 1. 发明授权
    • Antenna diversity switch of wireless dual-mode co-existence systems
    • 无线双模共存系统的天线分集开关
    • US07505790B2
    • 2009-03-17
    • US11145943
    • 2005-06-07
    • Sheng-Fuh ChangWen-Lin ChenYi-Yu LuHung-Cheng ChenShu-Fen TangAlbert Chen
    • Sheng-Fuh ChangWen-Lin ChenYi-Yu LuHung-Cheng ChenShu-Fen TangAlbert Chen
    • H04B1/38H04M1/00
    • H04B1/48
    • The present invention discloses an antenna diversity switch, used for receiving and transmitting RF signals for dual-mode co-existence wireless communication system. The antenna diversity switch comprises a first transmitting port; a second transmitting port; a receiving port; a first control unit, electrically connected between the first transmitting port and a first antenna; a second control unit, electrically connected between the first transmitting port and a second antenna; a third control unit, electrically connected between the second transmitting port and the first antenna; a forth control unit, electrically connected between the second transmitting port and the second antenna; a fifth control unit, electrically connected between the receiving port and the first antenna; a sixth control unit, electrically connected between the receiving port and the second antenna. The antenna diversity switch according to the present invention meets the requirement of IEEE 802.11b/g WLAN and Bluetooth co-existence operation with reduction of three or four antennas in the prior art to two antennas. Moreover, it provides antenna diversity for both WLAN and Bluetooth systems, where in the prior-art WLAN and Bluetooth co-existence system only WLAN system has the antenna diversity.
    • 本发明公开了一种用于接收和发送用于双模共存无线通信系统的RF信号的天线分集开关。 天线分集开关包括第一发射端口; 第二个发送端口; 接收端口 第一控制单元,电连接在第一发送端口和第一天线之间; 第二控制单元,电连接在第一发送端口和第二天线之间; 第三控制单元,电连接在第二发送端口和第一天线之间; 第四控制单元,电连接在第二发送端口和第二天线之间; 电连接在所述接收端口和所述第一天线之间的第五控制单元; 电连接在接收端口和第二天线之间的第六控制单元。 根据本发明的天线分集交换机通过将现有技术中的三个或四个天线减少到两个天线来满足IEEE 802.11b / g WLAN和蓝牙共存操作的要求。 此外,它为WLAN和蓝牙系统提供天线分集,其中在现有技术的WLAN和蓝牙共存系统中,只有WLAN系统具有天线分集。
    • 2. 发明申请
    • Dual-band wireless LAN RF transceiver
    • 双频无线局域网射频收发器
    • US20060281488A1
    • 2006-12-14
    • US11149230
    • 2005-06-10
    • Sheng-Fuh ChangWen-Lin ChenCheng-Hua TsaiChin-Hung ChienHung-Cheng ChenShu-Fen TangAlbert Chen
    • Sheng-Fuh ChangWen-Lin ChenCheng-Hua TsaiChin-Hung ChienHung-Cheng ChenShu-Fen TangAlbert Chen
    • H04M1/00
    • H04B1/0071H04B1/0082
    • The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.
    • 本发明公开了一种双频RF收发器。 收发器包括用作双频带收发器的RF前端并用于接收和发送第一RF信号和第二RF信号的第一模块; 电连接到第一模块的第二模块,用作双频RF收发器的IF IQ调制器/解调器; 电连接到第一和第二模块的第三模块,用作双频带RF收发器的三频带锁相频率合成器,用于向第一和第二模块提供第一本地振荡信号和第二本地振荡信号 模块和第三本地振荡信号发送到第二模块。 根据本发明的双频RF收发器通过单个双频RF模块实现IEEE802.11a / b / g的双频三模操作,因此电路尺寸,功耗,组件数, 并且成本可以大大降低。
    • 3. 发明授权
    • Dual-band wireless LAN RF transceiver
    • 双频无线局域网射频收发器
    • US07444167B2
    • 2008-10-28
    • US11149230
    • 2005-06-10
    • Sheng-Fuh ChangWen-Lin ChenCheng-Hua TsaiChin-Hung ChienHung-Cheng ChenShu-Fen TangAlbert Chen
    • Sheng-Fuh ChangWen-Lin ChenCheng-Hua TsaiChin-Hung ChienHung-Cheng ChenShu-Fen TangAlbert Chen
    • H04Q7/32
    • H04B1/0071H04B1/0082
    • The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.
    • 本发明公开了一种双频RF收发器。 收发器包括用作双频带收发器的RF前端并用于接收和发送第一RF信号和第二RF信号的第一模块; 电连接到第一模块的第二模块,用作双频RF收发器的IF IQ调制器/解调器; 电连接到第一和第二模块的第三模块,用作双频带RF收发器的三频带锁相频率合成器,用于向第一和第二模块提供第一本地振荡信号和第二本地振荡信号 模块和第三本地振荡信号发送到第二模块。 根据本发明的双频RF收发器通过单个双频RF模块实现IEEE802.11a / b / g的双频三模操作,因此电路尺寸,功耗,组件数, 并且成本可以大大降低。
    • 6. 发明授权
    • Display driving circuit
    • 显示驱动电路
    • US07994738B2
    • 2011-08-09
    • US12193761
    • 2008-08-19
    • Chih-Chan GerWen-Lin Chen
    • Chih-Chan GerWen-Lin Chen
    • H05B37/02
    • G09G3/20G09G2320/041
    • A display driving circuit includes a temperature compensation adjustment circuit, a control circuit, a full bridge circuit, and a transformation circuit. The temperature compensation adjustment circuit provides a current signal for the control circuit. The value of the current signal changes along with environment temperature changes. The control circuit controls the full bridge circuit based on the current signal. An output voltage signal of the full bridge circuit decreases as the current signal increases, and when the environment temperature decreases. The transformation circuit amplifies the output voltage signal of the full bridge circuit to drive a display.
    • 显示驱动电路包括温度补偿调节电路,控制电路,全桥电路和变换电路。 温度补偿调节电路为控制电路提供电流信号。 当前信号的值随着环境温度的变化而变化。 控制电路根据电流信号控制全桥电路。 全桥电路的输出电压信号随着电流信号的增加而减小,当环境温度降低时。 变换电路放大全桥电路的输出电压信号以驱动显示器。
    • 8. 发明授权
    • Burglar-proof wireless light adjusting module
    • 防盗无线调光模块
    • US07211960B2
    • 2007-05-01
    • US11088903
    • 2005-03-25
    • Wen-Lin Chen
    • Wen-Lin Chen
    • H05B37/02
    • G08B5/36
    • A burglar-proof wireless light adjusting module is provided wherein a transmission socket of a control module is connected with a lamp and a local power, respectively, whereas a control socket at the other end is connected with a conventional switch. When the switch is turned on or off, a micro processor transmits a signal of lightening status of a corresponding light bulb to a driving circuit, generates a corresponding control circuit through the driving circuit, to enable the light bulb to generate a continuously changing status of lightening and extinguishing, a status of lightening and extinguishing according to a random time, and a constant brightness, after receiving a status of open circuit and short-circuit, corresponding to various times of status of turning on and off, from the control socket.
    • 提供一种防盗无线调光模块,其中控制模块的传输插座分别与灯和本地电源连接,而另一端的控制插座与常规开关连接。 当开关打开或关闭时,微处理器将相应灯泡的发光状态的信号发送到驱动电路,通过驱动电路产生相应的控制电路,使得灯泡能够产生连续变化的状态 在控制插座上接收到各种不同的打开和关闭状态后,根据随机时间,亮度和熄灭状态,亮度和恒亮状态,接收到断开状态和短路状态。