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    • 13. 发明授权
    • Mitigating OFDM receiver interference caused by intermittent signal transmission
    • 减少由间歇信号传输引起的OFDM接收机干扰
    • US07899106B2
    • 2011-03-01
    • US11468822
    • 2006-08-31
    • William O. Camp, Jr.
    • William O. Camp, Jr.
    • H04B1/00
    • H04L27/2647H04L5/0048
    • Degradation of the OFDM signal carrying DVB-H content, caused by GSM burst transmission, is overcome without the need for hardware to constrain the GSM transmission spectrum by the modulating of the OFDM signal and utilizing the interleaving and Forward Error Correction (FEC) defined in the DVB-H standard to correct the errors caused by GSM transmission interference. A pattern in time and frequency of the scattered pilots in the OFDM signal is detected during a period of no burst transmission. During burst transmissions from the transmitter, scattered pilots are inserted into the received OFDM signal according to the pattern. An FFT demodulator utilizes the inserted scattered pilots to perform frame synchronization when the OFDM signal is degraded by interference from the burst transmission. The demodulated signal is de-interleaved, and bit errors due to the burst transmission interference are corrected by FEC decoders.
    • 克服由GSM突发传输引起的承载DVB-H内容的OFDM信号的降级,而不需要硬件通过OFDM信号的调制来约束GSM传输频谱,并且利用以下定义的交织和前向纠错(FEC) DVB-H标准来纠正由GSM传输干扰引起的错误。 在无突发传输期间,检测OFDM信号中散射导频的时间和频率模式。 在来自发射机的突发传输期间,根据模式将散射导频插入接收的OFDM信号。 当OFDM信号被来自突发传输的干扰降低时,FFT解调器利用插入的散射导频执行帧同步。 解调信号被解交织,并且由FEC解码器校正由于突发传输干扰引起的位错误。
    • 14. 发明授权
    • System, methods, devices and computer program products for controlling electronic appliances within a local area
    • 系统,方法,设备和计算机程序产品,用于控制局域内的电子设备
    • US07843333B2
    • 2010-11-30
    • US11679961
    • 2007-02-28
    • Anders AngelhagWilliam O. Camp, Jr.
    • Anders AngelhagWilliam O. Camp, Jr.
    • G08B1/08
    • G08C17/02G01S5/14G08C2201/41G08C2201/51G08C2201/91G08C2201/93
    • A system, methods, devices and computer program products for controlling the operation of at least one electronic appliance, e.g. a TV, a music system, a lighting system, a kitchen appliance or an alarm system, located within a local area. The system has a mobile terminal located within the local area, the mobile terminal being configured to transmit a short-range radio signal to one or more short-range devices located within the local area. Each short-range device of the plurality of short-range devices located within the local area is configured to receive a short-range radio signal from the mobile terminal, perform a signal measurement of signal delay, signal strength, or both signal delay and signal strength of said short-range radio signal received from the mobile terminal, and transmit information about said measurement to an electronic apparatus. The electronic apparatus is configured to subsequently receive this information about the signal measurements from the plurality of short-range devices. In response thereto, the electronic apparatus is operable to determine the location of the mobile terminal, and control the operation of the at least one electronic appliance in dependence of the determined location of the mobile terminal.
    • 用于控制至少一个电子设备的操作的系统,方法,设备和计算机程序产品,例如。 一个位于当地的电视,音乐系统,照明系统,厨房用具或报警系统。 该系统具有位于本地区域内的移动终端,移动终端被配置为向位于本地区域内的一个或多个短距离设备发送短距离无线电信号。 位于局部区域内的多个短距离设备的每个短距离设备被配置为从移动终端接收短距离无线电信号,执行信号延迟,信号强度或信号延迟和信号两者的信号测量 从移动终端接收的所述短距离无线电信号的强度,并将关于所述测量的信息发送到电子设备。 电子设备被配置为随后从多个短距离设备接收关于信号测量的信息。 响应于此,电子设备可操作以确定移动终端的位置,并且根据确定的移动终端的位置来控制至少一个电子设备的操作。