利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

51 条记录 (耗时 0.034 秒)

    AM-FM combined stereo receiver
    21.
    发明授权
    AM-FM combined stereo receiver 失效
    AM-FM组合立体声接收机

    公开(公告)号：US5109542A

    公开(公告)日：1992-04-28

    申请号：US652342

    申请日：1991-02-06

    申请人： Lawrence M. Ecklund

    发明人： Lawrence M. Ecklund

    IPC分类号： H03D1/22 ,  H03D3/06 ,  H03D5/00 ,  H04B1/16 ,  H04H1/00 ,  H04H20/49 ,  H04S1/00

    CPC分类号： H04H20/49 ,  H03D5/00 ,  H04B1/1646

    摘要： An improved AM-FM combined stereo receiver is provided having a single processor for removing, in the FM mode, arctangent distortion, and in the AM mode, to process the phase term from arctangent ##EQU1## to determine ##EQU2## Further, the radio includes a single discriminator circuit, wherein, in the FM mode, the discriminator tank circuit is used to convert frequency deviation to baseband audio, and in the AM mode, the discriminator tank circuit is used as the frequency-determining element for the voltage controlled oscillator (VCO), the VCO being used to translate the intermediate frequency (IF) signal to baseband.

    摘要翻译： 提供了一种改进的AM-FM组合立体声接收机，其具有用于在FM模式中去除反正切失真的单个处理器，并且在AM模式下，从反正切处理相位项以确定。此外，无线电 包括单鉴别器电路，其中在FM模式中，鉴频器电路用于将频偏转换为基带音频，在AM模式下，鉴频器电路用作压控振荡器的频率确定元件 （VCO），VCO用于将中频（IF）信号转换为基带。

    Circuit for controlling operator indicators in an AM stereo receiver
    22.
    发明授权
    Circuit for controlling operator indicators in an AM stereo receiver 失效
    用于控制AM立体声接收机中操作员指示灯的电路

    公开(公告)号：US4944011A

    公开(公告)日：1990-07-24

    申请号：US87839

    申请日：1987-08-21

    申请人： Lawrence M. Ecklund

    发明人： Lawrence M. Ecklund

    IPC分类号： H04H1/00 ,  H04H20/49

    CPC分类号： H04H20/49

    摘要： Disclosed is a circuit for controlling the activation of a stereo indicator and a tune indicator in an AM stereo receiver. In the preferred embodiment, a pilot tone detector is employed to determine if the input signal is a stereo signal and an AGC is used to detect a preselected improvement in the amplitude of the received signal. A capacitor is charged in response to the stereo or the amplitude condition. When the charge level of the capacitor reaches a first predetermined level, a tune indicator driver is enable to allow a tune detect circuit to drive the indicator. This prevents the tune indication from activating before the receiver is stabilized. When the charge level of the capacitor reaches a second predetermined level, a stereo indicator driver gradually activates the stereo indicator. This prevents sudden power drains from adversely affecting the circuit.

    摘要翻译： 公开了一种用于控制AM立体声接收机中的立体声指示器和乐曲指示器的激活的电路。 在优选实施例中，使用导频音检测器来确定输入信号是立体声信号，并且使用AGC来检测接收信号的幅度的预选改进。 响应于立体声或振幅条件，电容器被充电。 当电容器的充电电平达到第一预定电平时，调谐指示器驱动器能够允许调谐检测电路驱动指示器。 这在接收机稳定之前防止调音指示激活。 当电容器的电荷电平达到第二预定电平时，立体声指示器驱动器逐渐激活立体声指示器。 这可以防止突然的电源漏极对电路产生不利影响。

    Broadcast signal detected indication system
    23.
    发明授权
    Broadcast signal detected indication system 失效
    广播信号检测指示系统

    公开(公告)号：US4712241A

    公开(公告)日：1987-12-08

    申请号：US902860

    申请日：1986-09-02

    申请人： Lawrence M. Ecklund

    发明人： Lawrence M. Ecklund

    IPC分类号： H03J5/00 ,  H03J7/18 ,  H04H20/88 ,  H04H5/00

    CPC分类号： H03J7/18

    摘要： In a radio having an in phase multiplier (A) for providing an in phase detected signal, a detection unit for receiving this signal and for determining whether this signal includes any negative polarity components which would indicate that a viable broadcast signal does not exist on the incoming frequency of interest. This detection unit can include a comparator (11) for comparing the incoming signal against a selected reference value. The invention can also include a signal quality evaluation unit (58) for providing either a digital or analog quality signal that can also effect the output and be used by appropriate processing circuitry to further refine the channel selection process.

    摘要翻译： 在具有用于提供同相检测信号的同相乘法器（A）的无线电装置中，用于接收该信号并用于确定该信号是否包括任何负极性分量的检测单元，该负极性分量将指示可行的广播信号不存在于 感兴趣的进入频率。 该检测单元可以包括用于将输入信号与所选择的参考值进行比较的比较器（11）。 本发明还可以包括用于提供也可以影响输出的数字或模拟质量信号的信号质量评估单元（58），并由适当的处理电路使用以进一步优化信道选择过程。

    DEVICE AND METHOD FOR PHASE COMPENSATION
    24.
    发明申请
    DEVICE AND METHOD FOR PHASE COMPENSATION 有权
    用于相位补偿的装置和方法

    公开(公告)号：US20110156781A1

    公开(公告)日：2011-06-30

    申请号：US12650649

    申请日：2009-12-31

    申请人： Lawrence M. Ecklund ,  Robert E. Stengel

    发明人： Lawrence M. Ecklund ,  Robert E. Stengel

    IPC分类号： H03L7/08

    CPC分类号： H03L7/1974

    摘要： A frequency generation unit is provided that permits a receiver to tune from channel to channel without cycle skipping and in which compensation for phase offset introduced during tuning is provided. The frequency generation unit includes a fractional-N synthesizer, a voltage controlled oscillator (VCO), and a direct digital synthesizer (DDS). The fractional-N synthesizer generates frequencies from the VCO as well as a temperature controlled crystal oscillator. Outputs from the fractional-N synthesizer are supplied both the VCO and the DDS to control the VCO and DDS. The combination of the voltage controlled oscillator and fractional-N synthesizer is perpetually locked. The fractional-N synthesizer is maintained in a locked condition. The VCO output is provided to the DDS. An output from the DDS or from the fractional-N synthesizer forms the output signal of the frequency generation unit.

    摘要翻译： 提供了频率产生单元，其允许接收器在没有周期跳过的情况下从信道调谐到信道，并且在提供在调谐期间引入的相位偏移补偿。 频率产生单元包括分数N合成器，压控振荡器（VCO）和直接数字合成器（DDS）。 分数N合成器从VCO产生频率以及温度控制的晶体振荡器。 来自分数N合成器的输出都由VCO和DDS提供，以控制VCO和DDS。 压控振荡器和分数N合成器的组合永久锁定。 分数N合成器保持在锁定状态。 VCO输出提供给DDS。 来自DDS或分数N合成器的输出形成频率产生单元的输出信号。

    METHOD AND APPARATUS FOR ERROR RECOVERY IN COGINITIVE RADIO SYSTEMS
    27.
    发明申请
    METHOD AND APPARATUS FOR ERROR RECOVERY IN COGINITIVE RADIO SYSTEMS 审中-公开
    用于认知无线电系统中错误恢复的方法和装置

    公开(公告)号：US20080153419A1

    公开(公告)日：2008-06-26

    申请号：US11614230

    申请日：2006-12-21

    申请人： Nicholas E. Buris ,  Lawrence M. Ecklund ,  Louis J. Vannatta ,  Alvin J. Von Ruff

    发明人： Nicholas E. Buris ,  Lawrence M. Ecklund ,  Louis J. Vannatta ,  Alvin J. Von Ruff

    IPC分类号： H04B7/24

    CPC分类号： H04W16/14 ,  H04W24/04 ,  H04W88/02

    摘要： A method and apparatus for recovering from cognitive radio errors are disclosed. The method may include receiving stamp data relating to a cognitive radio from the cognitive radio's database, the stamp data including time, location and sensor information, comparing the received stamp data with information stored in a master database, determining, based on the comparison, whether the cognitive radio's database is corrupt, wherein if the cognitive radio's database is corrupt, downloading a copy of the master database to the cognitive radio.

    摘要翻译： 公开了一种用于从认知无线电错误中恢复的方法和装置。 该方法可以包括从认知无线电的数据库接收与认知无线电有关的标记数据，包括时间，位置和传感器信息的标记数据，将接收到的标记数据与存储在主数据库中的信息进行比较，基于该比较确定是否 认知无线电的数据库已损坏，如果认知无线电的数据库已损坏，则将主数据库的副本下载到认知无线电。

    Dual indicator circuit for tuning and stereo signals
    28.
    发明授权
    Dual indicator circuit for tuning and stereo signals 失效
    用于调谐和立体声信号的双指示电路

    公开(公告)号：US4602379A

    公开(公告)日：1986-07-22

    申请号：US605711

    申请日：1984-04-30

    申请人： Lawrence M. Ecklund

    发明人： Lawrence M. Ecklund

    IPC分类号： H04B1/16 ,  H03J3/14 ,  H04H20/88 ,  H04H5/00

    CPC分类号： H04H20/88 ,  H03J3/14

    摘要： In a stereophonic broadcasting receiver, a single indicator with two levels of illumination serves to provide indication of both accurate tuning and the presence of stereophonic signals. One signal or a combination of signals related to the tuning circuits of the receiver cause the indicator to be illuminated to a perceptible level. When, by use of a pilot tone detector, it is certain that stereophonic signals are being received, additional current is caused to flow through the indicator, raising the illumination to the maximum allowable level. The circuit has particular application to manually tuned receivers.

    摘要翻译： 在立体声广播接收机中，具有两级照明的单个指示器用于提供精确调谐和立体声信号的存在的指示。 一个信号或与接收机的调谐电路相关的信号的组合导致指示器被照亮到可感知的水平。 当通过使用导频音检测器确定正在接收立体声信号时，使附加电流流过指示器，将照明提高到最大允许电平。 该电路特别适用于手动调谐接收器。

    Signal interference protection circuit for AM stereo receiver
    29.
    发明授权
    Signal interference protection circuit for AM stereo receiver 失效
    AM立体声接收机的信号干扰保护电路

    公开(公告)号：US4489431A

    公开(公告)日：1984-12-18

    申请号：US386374

    申请日：1982-06-08

    申请人： Lawrence M. Ecklund

    发明人： Lawrence M. Ecklund

    IPC分类号： H04H1/00 ,  H04H40/36 ,  H04H20/49 ,  H04H20/88 ,  H04H40/45 ,  H04M5/00 ,  H04H5/00

    CPC分类号： H04H20/49

    摘要： In the field of AM stereo detection, co-channel or adjacent channel interference may cause some distortion and side-to-side movement of a stereo signal source as well as false "stereo detect" signals in AM stereo receivers having phase locked loop (PLL) systems. The invention provides a filter receiving the incoming signal and passing only the frequencies resulting from said interference; a sensor measures the output of the filters and if this signal is above a given level, the monophonic mode is enabled, i.e., the pilot detector, the stereo presence indicator and the stereo mode switch are disenabled for a timed interval. A higher given level of interference is required for stereo disenablement when stereo transmission with pilot tone is already being received.

    摘要翻译： 在AM立体声检测领域，同信道或相邻信道干扰可能导致立体声信号源的一些失真和侧向移动以及具有锁相环的AM立体声接收机中的假立体声检测信号 ）系统。 本发明提供了一种接收输入信号并仅传递由所述干扰产生的频率的滤波器; 传感器测量滤波器的输出，并且如果该信号高于给定电平，则单声道模式被使能，即导频检测器，立体声存在指示器和立体声模式开关在定时间隔内被禁用。 当已经收到具有导频音的立体声传输时，需要较高的给定的干扰水平来进行立体声消除。