METHOD AND SYSTEM FOR RAPIDLY DETECTING THE PRESENCE OF INTERFERERS IN BLUETOOTH FREQUENCY HOPPING
    21.
    发明申请
    METHOD AND SYSTEM FOR RAPIDLY DETECTING THE PRESENCE OF INTERFERERS IN BLUETOOTH FREQUENCY HOPPING 审中-公开
    用于快速检测蓝牙频率干扰器中存在的方法和系统

    公开(公告)号:US20090022208A1

    公开(公告)日:2009-01-22

    申请号:US12017135

    申请日:2008-01-21

    IPC分类号: H04B1/00

    CPC分类号: H04B1/034

    摘要: Methods and systems for wireless communication are disclosed and may include sweeping a signal detection frequency one or more times across a plurality of steps in a frequency range. The measured signal strength at each step may be compared to a threshold, and a status may be stored, which may depend on the presence of a measured signal strength above threshold. The detection frequency may be swept utilizing a voltage controlled oscillator, which may be tuned via a control voltage and/or calibration capacitors. Steps may be skipped when a measured signal strength may be greater than the threshold, and may occur after multiple above threshold measurements. The steps may have variable frequency width, and the range may include the Bluetooth band from 2.40 GHz to 2.48 GHz. The frequency may be swept over a subset of the Bluetooth band, and may be swept on a periodic basis.

    摘要翻译: 公开了用于无线通信的方法和系统,并且可以包括在频率范围内的多个步骤中扫描信号检测频率一次或多次。 可以将每个步骤处的测量信号强度与阈值进行比较,并且可以存储状态,其可以取决于高于阈值的测量信号强度的存在。 可以利用压控振荡器来扫描检测频率,该压控振荡器可以经由控制电压和/或校准电容器进行调谐。 当测量的信号强度可能大于阈值时,可以跳过步骤,并且可以在多次超过阈值测量之后发生。 这些步骤可以具有可变的频率宽度,并且该范围可以包括从2.40GHz到2.48GHz的蓝牙频带。 频率可以扫过蓝牙频带的子集,并且可以周期性地扫描。

    Method and system for digital spur cancellation
    22.
    发明授权
    Method and system for digital spur cancellation 有权
    数字支线取消方法和系统

    公开(公告)号:US08116401B2

    公开(公告)日:2012-02-14

    申请号:US11286947

    申请日:2005-11-22

    IPC分类号: H04L27/10

    摘要: A method and system for digital spur cancellation may include removing a spur in a left channel minus right channel (L−R) baseband signal generated from a FM signal. The L−R baseband signal may be generated by demodulating a sub-carrier, for example, by using CORDIC algorithm, in a signal demodulated from the FM signal. An orthogonal signal may also be generated by demodulating a sub-carrier, for example, by using CORDIC algorithm, in a signal demodulated from the FM signal. The phase of the orthogonal signal may be further adjusted to introduce a substantially −90° phase shift to spurs at a specific frequency. Accordingly, the spurs in the L−R baseband signal may be cancelled when the first L−R baseband signal is combined with the phase adjusted orthogonal signal.

    摘要翻译: 用于数字支线消除的方法和系统可以包括去除左声道中的杂音减去从FM信号产生的右声道(L-R)基带信号。 可以通过使用CORDIC算法在从FM信号解调的信号中解调副载波来生成L-R基带信号。 也可以通过使用CORDIC算法在从FM信号解调的信号中解调副载波来产生正交信号。 可以进一步调整正交信号的相位以便以特定频率引入基本上-90°的相移来刺激。 因此,当第一L-R基带信号与相位调整的正交信号组合时,可以消除L-R基带信号中的杂散。

    Method and system for selective equalization enablement based on modulation type
    23.
    发明授权
    Method and system for selective equalization enablement based on modulation type 失效
    基于调制类型的选择性均衡使能的方法和系统

    公开(公告)号:US08000653B2

    公开(公告)日:2011-08-16

    申请号:US12538444

    申请日:2009-08-10

    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。

    METHOD AND SYSTEM FOR ENHANCED SOUND QUALITY FOR STEREO AUDIO
    24.
    发明申请
    METHOD AND SYSTEM FOR ENHANCED SOUND QUALITY FOR STEREO AUDIO 审中-公开
    用于立体声的增强声音质量的方法和系统

    公开(公告)号:US20110194699A1

    公开(公告)日:2011-08-11

    申请号:US12701419

    申请日:2010-02-05

    IPC分类号: H04H20/48

    CPC分类号: H04H40/72 H04B1/1661

    摘要: Aspects of a method and system for enhanced sound quality for stereo audio are provided. In this regard, levels of audio signals received via an FM radio channel may be controlled based on a signal-to-noise ratio (SNR) of the RF channel. The SNR of the FM radio channel may be determined based on signal strength in an unused portion of the FM radio channel. The recovered audio signals may comprise an FM multiplex signal, and an unused portion of the FM radio channel may be a guard band adjacent to a carrier of the FM multiplex signal. A level of one or both of a mono component and a stereo component of an FM multiplex signal may be controlled based on the SNR.

    摘要翻译: 提供了用于立体声音频的用于增强声音质量的方法和系统的方面。 在这方面,可以基于RF信道的信噪比(SNR)来控制经由FM无线电信道接收的音频信号的电平。 可以基于FM无线电信道的未使用部分中的信号强度来确定FM无线电信道的SNR。 所恢复的音频信号可以包括FM多路复用信号,并且FM无线电信道的未使用部分可以是与FM多路复用信号的载波相邻的保护带。 可以基于SNR来控制FM多路复用信号的单声道分量和立体声分量中的一个或两个的电平。

    METHOD AND SYSTEM FOR SELECTIVE EQUALIZATION ENABLEMENT BASED ON MODULATION TYPE
    25.
    发明申请
    METHOD AND SYSTEM FOR SELECTIVE EQUALIZATION ENABLEMENT BASED ON MODULATION TYPE 失效
    基于调制类型的选择性均衡化方法和系统

    公开(公告)号:US20090296801A1

    公开(公告)日:2009-12-03

    申请号:US12538444

    申请日:2009-08-10

    IPC分类号: H03H7/30 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。

    Method and System for Selective Equalization Enablement Based on Modulation Type
    26.
    发明申请
    Method and System for Selective Equalization Enablement Based on Modulation Type 有权
    基于调制类型的选择性均衡化方法与系统

    公开(公告)号:US20130010853A1

    公开(公告)日:2013-01-10

    申请号:US13616436

    申请日:2012-09-14

    IPC分类号: H04L27/01

    CPC分类号: H04L27/0012

    摘要: Aspects of a method and system for selective equalization enablement based on modulation type are disclosed. One such method includes receiving a signal via an RF channel, detecting a modulation type of the signal, and selecting an equalization circuit for processing the signal based on the modulation type.

    摘要翻译: 公开了一种基于调制类型的选择性均衡实现方法和系统的方面。 一种这样的方法包括经由RF信道接收信号,检测信号的调制类型,以及基于调制类型选择用于处理信号的均衡电路。

    Method and system for selective equalization enablement based on modulation type
    27.
    发明授权
    Method and system for selective equalization enablement based on modulation type 有权
    基于调制类型的选择性均衡使能的方法和系统

    公开(公告)号:US08295768B2

    公开(公告)日:2012-10-23

    申请号:US13211111

    申请日:2011-08-16

    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 radio frequency (RF) signals received via a RF channel, detecting a modulation type of at least a portion of the received RF signals, and determining whether to enable or disable an equalization circuit for processing at least a subsequent portion of the received RF signals based on the detected modulation type; and selecting one of a plurality of inputs to a selector based on the detected modulation type, wherein the plurality of inputs comprise the at least a subsequent portion of the received signals and an output signal generated by the equalization circuit.

    摘要翻译: 一种用于基于调制类型的选择性均衡启用的方法和系统的方面可以在用于处理经由RF信道接收的射频(RF)信号的方法中找到,检测所接收的RF信号的至少一部分的调制类型,以及 基于检测到的调制类型,确定是否启用或禁用用于处理所接收的RF信号的至少后续部分的均衡电路; 以及基于所检测的调制类型,向选择器选择多个输入中的一个,其中所述多个输入包括所述接收信号的至少后续部分和由所述均衡电路产生的输出信号。

    Method and system for compensation of DC offset in an RF receiver
    28.
    发明授权
    Method and system for compensation of DC offset in an RF receiver 有权
    用于补偿RF接收机中直流偏移的方法和系统

    公开(公告)号:US07593707B2

    公开(公告)日:2009-09-22

    申请号:US10987977

    申请日:2004-11-12

    IPC分类号: H04B1/06

    摘要: Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback signal based on the selected sampled data. The generated feedback signal may be fed back to at least one of a plurality of input paths, and at least one of the feedback signals may be of an opposite polarity to the selected sampled data. The selected sampled data may be converted to a digital sample, a plurality of the digital samples accumulated, and an average of the plurality of the digital samples calculated. A digital feedback value may be generated based on the average. A phase of the digital feedback value may be adjusted via a derotator, which may utilize the coordinate rotation digital computer (CORDIC) algorithm.

    摘要翻译: 补偿RF接收机中的DC偏移的方面可以包括从多个输出路径中的至少一个采样数据,选择采样数据并基于所选择的采样数据生成至少一个反馈信号。 产生的反馈信号可以反馈到多个输入路径中的至少一个,并且至少一个反馈信号可能与所选择的采样数据具有相反的极性。 所选择的采样数据可以被转换成数字样本,多个数字样本被累积,并且计算出多个数字样本的平均值。 可以基于平均值生成数字反馈值。 数字反馈值的相位可以通过解旋器进行调整,该解旋器可以利用坐标旋转数字计算机(CORDIC)算法。

    METHOD AND SYSTEM FOR COMPENSATION OF DC OFFSET IN AN RF RECEIVER
    29.
    发明申请
    METHOD AND SYSTEM FOR COMPENSATION OF DC OFFSET IN AN RF RECEIVER 有权
    用于补偿RF接收机中直流偏移的方法和系统

    公开(公告)号:US20090066548A1

    公开(公告)日:2009-03-12

    申请号:US12268957

    申请日:2008-11-11

    IPC分类号: H03M1/16 H03M1/66

    摘要: System and method for processing signals are disclosed. The method may include converting, in an RF receiver, one or more analog samples, which are selected from one of a plurality of output paths of the RF receiver, to one or more digital samples. A digital feedback value may be generated based on an average of the one or more converted digital samples. A scaled version of the generated digital feedback value may be converted to an analog value. The converted analog value may be fed back to one or more of a plurality of input paths of the RF receiver. The one or more analog samples may be selected from among a plurality of output analog samples from the plurality of output paths of the RF receiver.

    摘要翻译: 公开了用于处理信号的系统和方法。 该方法可以包括在RF接收机中将从RF接收机的多个输出路径中的一个中选择的一个或多个模拟样本转换成一个或多个数字样本。 可以基于一个或多个转换的数字样本的平均值来生成数字反馈值。 生成的数字反馈值的缩放版本可以被转换为模拟值。 转换的模拟值可以被反馈到RF接收机的多个输入路径中的一个或多个。 可以从RF接收机的多个输出路径的多个输出模拟采样中选择一个或多个模拟采样。

    Phase locked loop modulator calibration techniques
    30.
    发明授权
    Phase locked loop modulator calibration techniques 有权
    锁相环调制器校准技术

    公开(公告)号:US07893773B2

    公开(公告)日:2011-02-22

    申请号:US12436033

    申请日:2009-05-05

    IPC分类号: H03L7/08 H03L7/099

    CPC分类号: H03C3/0991 H03L7/0898

    摘要: A method for calibrating a phase locked loop begins by determining a gain offset of a voltage controlled oscillator of the phase locked loop. The processing then continues by adjusting current of a charge pump of the phase locked loop based on the gain offset.

    摘要翻译: 通过确定锁相环的压控振荡器的增益偏移开始校准锁相环的方法。 然后通过基于增益偏移来调节锁相环的电荷泵的电流来继续处理。