-
1.发明申请公开(公告)号：US20050235089A1
公开(公告)日：2005-10-20
申请号：US11091423
申请日：2005-03-29
申请人： Fred Cheng , Chen-Min Chiang , Jenn-Shiang Lai , San Lin , Jingyu Hu , Aung Oo , Zhihui Luo
发明人： Fred Cheng , Chen-Min Chiang , Jenn-Shiang Lai , San Lin , Jingyu Hu , Aung Oo , Zhihui Luo
CPC分类号： G06F13/4072
摘要： The present invention relates to a method and apparatus universal serial bus (USB) physical layer. An UTM interface control logic receives a transmit data packet of USB 2.0 transceiver macrocell interface (UTMI). A transmit first-in first-out (FIFO) unit receives the transmit data packet output from the UTM interface control logic. A transmit unit receives the transmit data packet output from the transmit FIFO. An analog front-end (AFE) receives the transmitted data packet output of the transmit unit. A receive unit receives a receive data packet output from the AFE. A receive FIFO receives the receive data packet output from the receive unit and connected to the UTM interface control logic, whereby the receive data packet is output to the USB 2.0 transceiver macrocell interface.
摘要翻译： 本发明涉及通用串行总线（USB）物理层的方法和装置。 UTM接口控制逻辑接收USB 2.0收发器宏单元接口（UTMI）的发送数据包。 发送先进先出（FIFO）单元接收从UTM接口控制逻辑输出的发送数据分组。 发送单元接收从发送FIFO输出的发送数据分组。 模拟前端（AFE）接收发送单元的发送数据分组输出。 接收单元接收从AFE输出的接收数据分组。 接收FIFO接收从接收单元输出并连接到UTM接口控制逻辑的接收数据分组，由此将接收数据分组输出到USB 2.0收发器宏单元接口。
-
公开(公告)号：US07676206B2
公开(公告)日：2010-03-09
申请号：US11294663
申请日：2005-12-05
CPC分类号： H04B1/18
摘要： A radio receiver front-end includes a tunable antenna interface and a low noise amplifying section. The tunable antenna interface is operably coupled to receive a wide bandwidth signal from an antenna, wherein the wide bandwidth signal includes a plurality of channel signals, and wherein the tunable antenna interface is tuned to pass a selected one of the plurality of channel signals substantially unattenuated and to attenuate remaining ones of the plurality of channel signals to produce a filtered wide bandwidth signal. The low noise amplifying section is operably coupled to amplify the filtered wide bandwidth signal to produce a filtered and amplified wide bandwidth signal.
摘要翻译： 无线电接收机前端包括可调谐天线接口和低噪声放大部分。 可调谐天线接口可操作地耦合以从天线接收宽带宽信号，其中宽带宽信号包括多个信道信号，并且其中可调谐天线接口被调谐以将多个信道信号中选定的一个信道基本上未衰减 并衰减多个信道信号中剩余的信道信号，以产生滤波的宽带宽信号。 低噪声放大部分可操作地耦合以放大经滤波的宽带宽信号以产生滤波和放大的宽带宽信号。
-
公开(公告)号：US20080100224A1
公开(公告)日：2008-05-01
申请号：US11799363
申请日：2007-05-01
IPC分类号： H05B37/02
CPC分类号： H05B33/0851 , H05B33/0815
摘要： A backlight control module includes a gain module, a variable voltage reference, a comparator, and a pulse width modulator. The gain module is coupled to amplify a representation of LED current to produce an amplified current sense signal. The variable voltage reference source is coupled to produce a reference voltage based on the backlight setting to produce a representation of the backlight setting. The comparator is coupled to compare the reference voltage with the amplified current sense signal to produce the comparison signal. The pulse width modulator is coupled to produce a pulse width modulated (PWM) signal as the brightness control signal based on the comparison signal, wherein the brightness control signal is provided to an off-chip variable supply voltage source that provides power to the off-chip LED.
摘要翻译： 背光控制模块包括增益模块，可变电压基准，比较器和脉宽调制器。 增益模块被耦合以放大LED电流的表示以产生放大的电流感测信号。 可变电压参考源被耦合以基于背光设置产生参考电压以产生背光设置的表示。 比较器被耦合以将参考电压与放大的电流检测信号进行比较以产生比较信号。 脉冲宽度调制器被耦合以产生基于比较信号的亮度控制信号的脉冲宽度调制（PWM）信号，其中亮度控制信号被提供给向片外可调电源提供电源的片外可变电源电压源， 芯片LED。
-
公开(公告)号：US20070129038A1
公开(公告)日：2007-06-07
申请号：US11294663
申请日：2005-12-05
申请人： Lawrence Ragan , Matthew Felder , Jingyu Hu , Jamie Happ , Michael May
发明人： Lawrence Ragan , Matthew Felder , Jingyu Hu , Jamie Happ , Michael May
IPC分类号： H04B17/00
CPC分类号： H04B1/18
摘要： A radio receiver front-end includes a tunable antenna interface and a low noise amplifying section. The tunable antenna interface is operably coupled to receive a wide bandwidth signal from an antenna, wherein the wide bandwidth signal includes a plurality of channel signals, and wherein the tunable antenna interface is tuned to pass a selected one of the plurality of channel signals substantially unattenuated and to attenuate remaining ones of the plurality of channel signals to produce a filtered wide bandwidth signal. The low noise amplifying section is operably coupled to amplify the filtered wide bandwidth signal to produce a filtered and amplified wide bandwidth signal.
摘要翻译： 无线电接收机前端包括可调谐天线接口和低噪声放大部分。 可调谐天线接口可操作地耦合以从天线接收宽带宽信号，其中宽带宽信号包括多个信道信号，并且其中可调谐天线接口被调谐以将多个信道信号中选定的一个信道基本上未衰减 并衰减多个信道信号中剩余的信道信号，以产生滤波的宽带宽信号。 低噪声放大部分可操作地耦合以放大经滤波的宽带宽信号以产生滤波和放大的宽带宽信号。
-
-
-
搜索结果
4 条记录 (耗时 0.01 秒)
