公开(公告)号：US20060239393A1

公开(公告)日：2006-10-26

申请号：US11111616

申请日：2005-04-21

申请人： Yhean-Sen Lai ,  Robert Malkemes

发明人： Yhean-Sen Lai ,  Robert Malkemes

IPC分类号： H03D3/24

CPC分类号： H03L7/07 ,  H03L7/087 ,  H03L2207/50 ,  H04N21/242 ,  H04N21/4305

摘要： A dual loop, clock synchronization circuit for a receiver in a communication system. The circuitry uses a first loop of a digital phase lock loop for coarse synchronization to time stamps within the received data and uses a second loop for fine synchronization of a second numerically controlled oscillator.

公开(公告)号：US20070041481A1

公开(公告)日：2007-02-22

申请号：US11204631

申请日：2005-08-16

申请人： Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong

发明人： Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong

IPC分类号： H04L27/08

CPC分类号： H03G3/3052 ,  H03G1/0088 ,  H04H20/22 ,  H04H40/90

摘要： An automatic gain control (AGC) for use in a digital radio receiver that allows at least two types of input signal to be processed using a single receiver front end by supporting two modes of operation, each optimized for one particular signal type, and a third mode not optimized for either. The AGC enables smooth switching between the optimized modes of operation via the non-optimized mode. By measuring a difference in the strength between the demodulated signals, and comparing that to two preset values, the AGC which mode of operation to place the receiver in. Modes of operation are maintained by adjusting the gain of a variable gain amplifier (VGA), so that an appropriate incoming signal is amplified to a level that is suitable for an analogue-to-digital (ADC) converter. The AGC is compatible with existing satellite digital audio radio system (SDARS) transmission capabilities.

摘要翻译： 一种在数字无线电接收机中使用的自动增益控制（AGC），其允许使用单个接收器前端来处理至少两种类型的输入信号，所述两个接收机前端通过支持针对一种特定信号类型优化的两种操作模式，以及第三种 模式未优化。 AGC可以通过非优化模式在优化的操作模式之间平滑切换。 通过测量解调信号之间的强度差，并将其与两个预设值进行比较，AGC将接收器放置在操作模式中。通过调节可变增益放大器（VGA）的增益来维持操作模式， 使得适当的输入信号被放大到适合于模数（ADC）转换器的电平。 AGC与现有的卫星数字音频无线电系统（SDARS）传输能力相兼容。

公开(公告)号：US20050287975A1

公开(公告)日：2005-12-29

申请号：US10876041

申请日：2004-06-24

申请人： David Fishman ,  Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong ,  Ying Zhu

发明人： David Fishman ,  Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong ,  Ying Zhu

IPC分类号： H03G3/20 ,  H03G3/30 ,  H04B1/06 ,  H04B7/00 ,  H04H1/00 ,  H04H40/90 ,  H04L27/08

CPC分类号： H03G3/3078 ,  H03G3/3052 ,  H04B7/18523 ,  H04H40/90

摘要： An automatic gain control (AGC) for a Satellite Digital Audio Radio Service (SDARS) receiver, a method of automatically controlling gain and a SDARS receiver incorporating the AGC or the method. In one embodiment, the AGC includes: (1) an AGC function selector configured to compare first and second time division multiplexed (TDM) power signals and a nonzero threshold and select an AGC function based thereon and (2) an AGC function applier associated with the AGC function selector and configured to apply the AGC function to the first and second TDM power signals to develop therefrom an AGC control signal.

摘要翻译： 用于卫星数字音频无线电服务（SDARS）接收机的自动增益控制（AGC），自动控制增益的方法和包含AGC或方法的SDARS接收机。 在一个实施例中，AGC包括：（1）AGC功能选择器，被配置为比较第一和第二时分复用（TDM）功率信号和非零阈值，并且基于此选择AGC功能;以及（2）AGC功能选择器， 所述AGC功能选择器被配置为将AGC功能应用于所述第一和第二TDM功率信号以从其开发AGC控制信号。

公开(公告)号：US20050213526A1

公开(公告)日：2005-09-29

申请号：US10810418

申请日：2004-03-26

申请人： Robert Malkemes ,  Edwin Muth ,  Denis Orlando ,  Jie Song

发明人： Robert Malkemes ,  Edwin Muth ,  Denis Orlando ,  Jie Song

IPC分类号： H04B7/185 ,  H04H1/00 ,  H04H20/61 ,  H04H40/90 ,  H04L12/28

CPC分类号： H04H20/61 ,  H04B7/18523 ,  H04B7/18528 ,  H04H40/90

摘要： The present invention provides a broadcast retransmitter for use with a wireless local area network (WLAN). In one embodiment, the broadcast retransmitter includes a gateway configured to format a bitstream received from a broadcast receiver for delivery to a wireless access point (WAP) of the WLAN and subsequent conversion by the WAP into a wireless transmission over the WLAN to make the bitstream available for reception by a client of the WLAN.

摘要翻译： 本发明提供一种与无线局域网（WLAN）一起使用的广播转发器。 在一个实施例中，广播重传器包括网关，其被配置为格式化从广播接收机接收的比特流，用于传送到WLAN的无线接入点（WAP），并且随后由WAP转换成无线传输，以使得比特流 可用于WLAN的客户端的接收。

公开(公告)号：US08260240B2

公开(公告)日：2012-09-04

申请号：US11204631

申请日：2005-08-16

申请人： Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong

发明人： Robert Malkemes ,  Denis Orlando ,  Jie Song ,  Eric Zhong

IPC分类号： H04B1/06

CPC分类号： H03G3/3052 ,  H03G1/0088 ,  H04H20/22 ,  H04H40/90

摘要： An automatic gain control (AGC) for use in a digital radio receiver that allows at least two types of input signal to be processed using a single receiver front end by supporting two modes of operation, each optimized for one particular signal type, and a third mode not optimized for either. The AGC enables smooth switching between the optimized modes of operation via the non-optimized mode. By measuring a difference in the strength between the demodulated signals, and comparing that to two preset values, the AGC controls which mode of operation to place the receiver in. Modes of operation are maintained by adjusting the gain of a variable gain amplifier (VGA), so that an appropriate incoming signal is amplified to a level that is suitable for an analogue-to-digital (ADC) converter. The AGC is compatible with existing satellite digital audio radio system (SDARS) transmission capabilities.

摘要翻译： 一种在数字无线电接收机中使用的自动增益控制（AGC），其允许使用单个接收器前端来处理至少两种类型的输入信号，所述两个接收机前端通过支持针对一种特定信号类型优化的两种操作模式，以及第三种 模式未优化。 AGC可以通过非优化模式在优化的操作模式之间平滑切换。 通过测量解调信号之间的强度差，并将其与两个预设值进行比较，AGC控制将接收机置于哪种操作模式。通过调整可变增益放大器（VGA）的增益来维持操作模式， ，使得适当的输入信号被放大到适合于模数（ADC）转换器的电平。 AGC与现有的卫星数字音频无线电系统（SDARS）传输能力相兼容。