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    • 71. 发明申请
    • Method and system for a radio data system (RDS) demodulator for a single chip integrated bluetooth and frequency modulation (FM) transceiver and baseband processor
    • 用于单芯片集成蓝牙和调频(FM)收发器和基带处理器的无线电数据系统(RDS)解调器的方法和系统
    • US20060270449A1
    • 2006-11-30
    • US11287075
    • 2005-11-22
    • Hea KimBrima Ibrahim
    • Hea KimBrima Ibrahim
    • H04M1/00
    • H04H40/18H04B1/034H04B1/207Y02D70/14
    • Aspects of a method and system for a radio data service (RDS) demodulator for a single chip integrated Bluetooth and frequency modulation (FM) transceiver and baseband processor are presented. Aspects of the system may include circuitry on a single chip that enables demodulation of an RDS signal, filtering of the RDS signal, and detection of binary bits in the filtered RDS signal. The filtered RDS signal may be generated by filtering the RDS signal based on a raised cosine filter, or a doublet filter. In general, the RDS signal may also be filtered by a filter that is a first, or greater derivative of a Gaussian filter in either the time or frequency domain. Aspects of the method may include demodulating the RDS signal, filtering the RDS signal, and detecting binary bits in the filtered RDS signal.
    • 提出了用于单芯片集成蓝牙和频率调制(FM)收发器和基带处理器的无线电数据服务(RDS)解调器的方法和系统的方面。 该系统的方面可以包括能够解调RDS信号,对RDS信号进行滤波以及检测经滤波的RDS信号中的二进制位的单个芯片上的电路。 可以通过基于升余弦滤波器或双滤波器对RDS信号进行滤波来生成经滤波的RDS信号。 通常,RDS信号也可以由滤波器滤波,滤波器是时域或频域中的高斯滤波器的第一或更大的导数。 该方法的方面可以包括解调RDS信号,滤波RDS信号,以及检测经滤波的RDS信号中的二进制位。
    • 72. 发明申请
    • Method and system for FM interference detection and mitigation
    • FM干扰检测和减轻的方法和系统
    • US20060269021A1
    • 2006-11-30
    • US11286950
    • 2005-11-22
    • Brima IbrahimPaul Lettieri
    • Brima IbrahimPaul Lettieri
    • H03D1/04
    • H04B1/1027Y02D70/14
    • Methods and systems for processing signals are provided and may include removing a DC component from a signal envelope comprising a combined signal within a range of allocated FM channels to generate a modified signal envelope. Fluctuation in power in the signal envelope may be detected based on a ratio of a magnitude of the signal envelope and a magnitude of the modified signal envelope. The removing may further include low-pass filtering the signal envelope to generate a low-pass filtered signal envelope. A square values of the low-pass filtered signal envelope may be determined to generate a squared signal envelope. The squared signal envelope may be high-pass filtered to generate a high-pass filtered signal envelope. The fluctuation in power in the signal envelope may be detected based on a ratio of a magnitude of the high-pass filtered signal envelope and a magnitude of the low-pass filtered signal envelope.
    • 提供用于处理信号的方法和系统,并且可以包括从包括分配的FM信道的范围内的组合信号的信号包络去除DC分量以产生修改的信号包络。 可以基于信号包络的大小与修改的信号包络的大小的比值来检测信号包络中的功率波动。 去除可以进一步包括对信号包络进行低通滤波以产生低通滤波信号包络。 可以确定低通滤波信号包络的平方值以产生平方信号包络。 平方信号包络可以被高通滤波以产生高通滤波信号包络。 可以基于高通滤波信号包络的幅度与低通滤波信号包络的幅度的比值来检测信号包络中功率的波动。
    • 77. 发明授权
    • Method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines bluetooth and IEEE 802.11 b/g WLAN technologies
    • 用于组合蓝牙和IEEE 802.11 b / g WLAN技术的片上系统(SOC)设备的天线和无线电前端拓扑的方法和系统
    • US09059782B2
    • 2015-06-16
    • US11387340
    • 2006-03-23
    • Prasanna DesaiBrima Ibrahim
    • Prasanna DesaiBrima Ibrahim
    • H04B7/00H04B1/403H04W88/06
    • H04W72/1215H04B1/406H04W4/80H04W84/12H04W88/06
    • Certain embodiments of the invention may be found in a method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines Bluetooth and IEEE 802.11 b/g WLAN technologies. A single chip radio device that supports WLAN and Bluetooth technologies receives a WLAN signal in a WLAN processing circuitry of the radio front-end and in a Bluetooth processing circuitry of the radio front-end. Signals generated by the WLAN processing circuitry and the Bluetooth processing circuitry from the received WLAN signal may be combined in a diversity combiner that utilizes selection diversity gain combining or maximal ratio combining (MRC). When a generated signal is below a threshold value, the signal may be dropped from the combining operation. A single antenna usage model may be utilized with the single chip radio device front-end topology to support WLAN and Bluetooth communications.
    • 本发明的某些实施例可以在组合蓝牙和IEEE 802.11b / g WLAN技术的用于片上系统(SOC)设备的天线和无线电前端拓扑的方法和系统中找到。 支持WLAN和蓝牙技术的单芯片无线电设备在无线电前端的WLAN处理电路和无线电前端的蓝牙处理电路中接收WLAN信号。 由WLAN处理电路和蓝牙处理电路从接收到的WLAN信号生成的信号可以组合在利用选择分集增益组合或最大比组合(MRC)的分集组合器中。 当生成的信号低于阈值时,可以从组合操作中丢弃该信号。 单个天线使用模型可以与单芯片无线电设备前端拓扑结合使用以支持WLAN和蓝牙通信。