公开(公告)号：US08493907B2

公开(公告)日：2013-07-23

申请号：US13172075

申请日：2011-06-29

申请人： Hongyu Xie ,  Yuan Zhuang ,  Murat Mese ,  Brima Ibrahim

发明人： Hongyu Xie ,  Yuan Zhuang ,  Murat Mese ,  Brima Ibrahim

IPC分类号： H04B7/204

CPC分类号： H04L27/2675 ,  H04L27/2659 ,  H04L27/266

摘要： A technique to provide frequency offset estimation for packets transmitted during a service period allocated strictly for designated source and destination devices. The destination device obtains coarse and fine frequency offset estimation from the short and long preambles. A residual frequency offset is tracked for the data blocks and combined with the coarse and fine frequency offset to obtain a total frequency offset to apply to the data blocks. The total frequency offset value at the end of the first packet is saved and, instead of again estimating the coarse and fine frequency offset values with the short and long preambles of the second packet, the saved total frequency offset value is used as the initialization value to add to the residual frequency offset in the second packet. The saved offset value at the end of each packet becomes the initialization value for the subsequent packet.

公开(公告)号：US20130002317A1

公开(公告)日：2013-01-03

申请号：US13173694

申请日：2011-06-30

申请人： Emmanouil Frantzeskakis ,  Georgios Sfikas ,  Stephen Wu ,  Radha Srinivasan ,  Henrik Tholstrup Jensen ,  Brima Ibrahim

发明人： Emmanouil Frantzeskakis ,  Georgios Sfikas ,  Stephen Wu ,  Radha Srinivasan ,  Henrik Tholstrup Jensen ,  Brima Ibrahim

IPC分类号： H03L7/08

CPC分类号： H03L7/08 ,  H03L7/18

摘要： Designs of devices having digital phase locked loop (DPLL) circuits that include multiple digital feedback loops to generate high frequency clock signals by a digitally controlled oscillator (DCO). A time-to-digital converter (TDC) module is provided in such a DPLL circuit to receive an input reference clock signal and a first feedback clock signal from a first digital feedback loop and produces a digital TDC output indicative of a first phase error caused by a difference in time between the input reference clock signal and the first feedback clock signal. A second digital feedback loop is provided to generate a second digital feedback signal indicative of a second phase error caused by a difference in frequency between a desired clock signal and a generated clock signal generated by the DCO. The first and second digital feedback loops are coupled to the DCO to generate the high frequency clock signals.

摘要翻译： 具有数字锁相环（DPLL）电路的器件的设计包括多个数字反馈回路，以通过数字控制振荡器（DCO）产生高频时钟信号。 在这种DPLL电路中提供时间数字转换器（TDC）模块，以从第一数字反馈回路接收输入参考时钟信号和第一反馈时钟信号，并产生指示第一相位误差的数字TDC输出 通过输入参考时钟信号和第一反馈时钟信号之间的时间差。 提供第二数字反馈环路以产生指示由期望时钟信号和由DCO产生的生成的时钟信号之间的频率差引起的第二相位误差的第二数字反馈信号。 第一和第二数字反馈回路耦合到DCO以产生高频时钟信号。

公开(公告)号：US08121570B2

公开(公告)日：2012-02-21

申请号：US12418448

申请日：2009-04-03

申请人： Brima Ibrahim ,  Bojko Marholev ,  Lijun Zhang

发明人： Brima Ibrahim ,  Bojko Marholev ,  Lijun Zhang

IPC分类号： H04Q7/20

CPC分类号： H04H20/61 ,  H03J1/0008 ,  H04H20/71 ,  Y02D70/14

摘要： A system for processing signals is disclosed and may include a single chip having an integrated Bluetooth radio and an integrated FM radio. The single chip may include at least one processor that enables selecting from a range of FM channels, a particular frequency for one of the FM channels based on an intermediate frequency (IF). The particular frequency may be selected so that it is an integer multiple of a channel spacing between neighboring allocated FM channels within the range of FM channels, and may be offset by at most one-half the channel spacing. The at least one processor may enable determining a frequency error of the selected particular frequency for the one of the FM channels. The at least one processor may also enable determining, whether the particular frequency includes an on-frequency channel based on the determined frequency error.

摘要翻译： 公开了用于处理信号的系统，并且可以包括具有集成的蓝牙无线电和集成FM无线电的单个芯片。 单芯片可以包括至少一个处理器，其能够从FM频道的范围中选择基于中频（IF）的FM频道之一的特定频率。 可以选择特定频率，使得它是在FM信道范围内的相邻分配的FM频道之间的信道间隔的整数倍，并且可以偏移最多一半的信道间隔。 所述至少一个处理器可以使得能够确定所述FM频道之一的所选择的特定频率的频率误差。 所述至少一个处理器还可以使得能够基于所确定的频率误差来确定特定频率是否包括频率信道。

公开(公告)号：US08116677B2

公开(公告)日：2012-02-14

申请号：US12862111

申请日：2010-08-24

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Meng-An Pan ,  Hung-Ming Chien ,  Shahla Khorram ,  William T. Colleran ,  Jacob Rael ,  Masood Syed ,  Brima Ibrahim ,  Stephen Wu ,  Shervin Moloudi

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Meng-An Pan ,  Hung-Ming Chien ,  Shahla Khorram ,  William T. Colleran ,  Jacob Rael ,  Masood Syed ,  Brima Ibrahim ,  Stephen Wu ,  Shervin Moloudi

IPC分类号： H04B7/14

CPC分类号： H03D3/244 ,  H03J2200/04 ,  H03L7/0995 ,  H03L7/18 ,  H03L2207/12 ,  H04B1/707 ,  H04B1/713 ,  H04B17/101 ,  H04B17/14 ,  H04B17/19 ,  H04B17/20

摘要： An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器，发射器，本地振荡器（LO）发生器，控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中，其中包括过滤器和电感器等组件。 用于接收机，发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机，发射机和LO发生器的增益，频率特性，选择性，本底噪声和失真特性。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US07925213B2

公开(公告)日：2011-04-12

申请号：US11248807

申请日：2005-10-12

申请人： Siukai Mak ,  Brima Ibrahim

发明人： Siukai Mak ,  Brima Ibrahim

IPC分类号： H04B7/00

CPC分类号： G06F9/3879 ,  H04W76/10 ,  H04W84/18 ,  H04W88/02

摘要： Aspects of a method and a system for audio signal processing for Bluetooth wireless headsets using a hardware accelerator are presented. Aspects of a method for processing a signal may include configuring circuitry within a single chip to establish at least one of a plurality of data paths for processing input data for a plurality of signal processing algorithms for implementing a subband codec (SBC). The method may also include executing vector rotation of data during processing within one or more of the plurality of data paths. Aspects of a system may include a hardware accelerator that configures circuitry within a single chip to establish at least one of a plurality of data paths for processing input data for a plurality of signal processing algorithms for implementing SBC. The hardware accelerator may execute vector rotation of data during processing within one or more of the plurality of data paths.

摘要翻译： 提出了使用硬件加速器的蓝牙无线耳机的音频信号处理方法和系统的方面。 用于处理信号的方法的方面可以包括配置单个芯片内的电路以建立用于处理用于实现子带编解码器（SBC）的多个信号处理算法的输入数据的多个数据路径中的至少一个。 该方法还可以包括在多个数据路径的一个或多个内的处理期间执行数据的向量旋转。 系统的方面可以包括配置单个芯片内的电路的硬件加速器，以建立用于处理用于实现SBC的多个信号处理算法的输入数据的多个数据路径中的至少一个。 硬件加速器可以在多个数据路径中的一个或多个数据路径内的处理期间执行数据的向量旋转。

公开(公告)号：US07904037B2

公开(公告)日：2011-03-08

申请号：US12273313

申请日：2008-11-18

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Jacob Rael ,  Syed Masood ,  Brima Ibrahim ,  Hung-Ming Chien ,  Stephen Wu ,  Meng-An Pan

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Jacob Rael ,  Syed Masood ,  Brima Ibrahim ,  Hung-Ming Chien ,  Stephen Wu ,  Meng-An Pan

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H03B19/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B27/00 ,  H03B2200/0078 ,  H03F1/26 ,  H03F3/45188 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45464 ,  H03F2203/45526 ,  H03F2203/45544 ,  H03F2203/45554 ,  H03F2203/45638 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/08 ,  H03J2200/10 ,  H04B17/14

摘要： An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器，发射器，本地振荡器（LO）发生器，控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中，其中包括过滤器和电感器等组件。 用于接收机，发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机，发射机和LO发生器的增益，频率特性，选择性，本底噪声和失真特性。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20100035545A1

公开(公告)日：2010-02-11

申请号：US12187557

申请日：2008-08-07

申请人： Brima Ibrahim ,  Prasanna Desai

发明人： Brima Ibrahim ,  Prasanna Desai

IPC分类号： H04B7/00

CPC分类号： H04B7/26 ,  G06F3/02 ,  G06F3/03541 ,  G06F3/0412 ,  G06F3/167 ,  H04W24/00 ,  H04W28/06 ,  H04W28/18 ,  H04W84/18

摘要： A host device may be enabled to support a plurality of wireless interfaces, wherein some of these interfaces may be utilized to support human interface device (HID) based communication. The host device may be enabled to monitor activity of HID devices based on communications via HID capable wireless interfaces, may predict future use of the HID devices based on the monitoring, and may manage sniff communication that is utilized to track and/or detect activities in the HID devices. The management of the sniff communication may comprise adjusting characteristics of the sniff communication to enable improving throughput of other wireless interfaces available via the host device that may be affected by the sniff communication. The adjustment of the characteristics of sniff communication may comprise adjusting, statically and/or dynamically, length of sniff intervals and/or designating of sniff packets as high priority requests.

摘要翻译： 可以使主机设备支持多个无线接口，其中这些接口中的一些可以用于支持基于人机接口设备（HID）的通信。 可以使主机设备能够基于通过具有HID能力的无线接口的通信来监视HID设备的活动，可以基于监视来预测HID设备的未来使用，并且可以管理用于跟踪和/或检测活动的嗅探通信 HID设备。 嗅探通信的管理可以包括调整嗅探通信的特性，以便能够改善可能受嗅探通信影响的主机设备可用的其他无线接口的吞吐量。 嗅探通信的特征的调整可以包括调整，静态和/或动态的嗅探间隔的长度和/或将嗅探包指定为高优先级请求。

公开(公告)号：US20100009673A1

公开(公告)日：2010-01-14

申请号：US12563765

申请日：2009-09-21

申请人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen

发明人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen

IPC分类号： H04W24/00

CPC分类号： H03J7/02 ,  H03J2200/02 ,  H04L25/063 ,  H04L27/142 ,  H04L2027/0057 ,  H04L2027/0065

摘要： In RF transceivers, a method and a system for a frequency feedback adjustment in digital receivers are provided. A DC offset may result from the difference in frequencies between an RF transmitter and an RF receiver. An adjustment of the receiver's frequency may be implemented after synchronization occurs and may be performed by, for example, utilizing a header portion of a packet communicated via a wireless interface. The adjustment may be performed when the frequency difference exceeds a threshold value. In another aspect, adjusting the frequency of the RF receiver may be performed by modifying and/or changing a phase locked loop (PLL) trimmer register. This approach may allow an RF receiver to operate, in some instances, without the need for an equalizer. In this regard, the power consumed by the RF receiver may be minimized and/or the overall cost of the RF receiver may be reduced.

摘要翻译： 在RF收发器中，提供了一种用于数字接收机中的频率反馈调整的方法和系统。 DC偏移可能由RF发射机和RF接收机之间的频率差引起。 接收机频率的调整可以在同步发生之后实现，并且可以通过例如利用经由无线接口传送的分组的报头部分来执行。 当频率差超过阈值时，可以进行调整。 在另一方面，可以通过修改和/或改变锁相环（PLL）微调寄存器来调整RF接收机的频率。 这种方法可以允许RF接收机在某些情况下操作，而不需要均衡器。 在这方面，RF接收机消耗的功率可以被最小化，和/或可以降低RF接收机的总体成本。

公开(公告)号：US07574175B2

公开(公告)日：2009-08-11

申请号：US11112983

申请日：2005-04-11

申请人： Brima Ibrahim ,  Hea Joung Kim ,  Paul Lettieri

发明人： Brima Ibrahim ,  Hea Joung Kim ,  Paul Lettieri

IPC分类号： H04B7/00

CPC分类号： H04L27/0012

摘要： Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing a radio frequency (RF) signal that comprises receiving a Bluetooth signal via an RF channel, detecting a modulation type of the received Bluetooth signal, and selecting an equalization circuit for processing the received Bluetooth signal based on the detected modulation type. The method may also comprise determining a data rate based on the detected modulation type.

摘要翻译： 基于调制类型的选择性均衡使能的方法和系统的方面可以在用于处理射频（RF）信号的方法中找到，该方法和系统包括经由RF信道接收蓝牙信号，检测接收的蓝牙信号的调制类型， 以及基于检测到的调制类型选择用于处理接收到的蓝牙信号的均衡电路。 该方法还可以包括基于检测到的调制类型来确定数据速率。

公开(公告)号：US07555263B1

公开(公告)日：2009-06-30

申请号：US09634552

申请日：2000-08-08

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Brima Ibrahim ,  Jacob Rael ,  Shahla Khorram ,  Shervin Moloudi ,  Stephen Wu ,  Hooman Darabi ,  William T. Colleran ,  Ed Chien ,  Meng-An Pan

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Brima Ibrahim ,  Jacob Rael ,  Shahla Khorram ,  Shervin Moloudi ,  Stephen Wu ,  Hooman Darabi ,  William T. Colleran ,  Ed Chien ,  Meng-An Pan

IPC分类号： H04B7/14

CPC分类号： H04B1/40 ,  H03B21/01 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/10 ,  H04B1/30 ,  H04B17/104 ,  H04B17/14 ,  H04B17/19

摘要： An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器，发射器，本地振荡器（LO）发生器，控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中，其中包括过滤器和电感器等组件。 用于接收机，发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机，发射机和LO发生器的增益，频率特性，选择性，本底噪声和失真特性。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。