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    RADIO FREQUENCY (RF) FRONT END HAVING MULTIPLE LOW NOISE AMPLIFIER MODULES
    43.
    发明申请
    RADIO FREQUENCY (RF) FRONT END HAVING MULTIPLE LOW NOISE AMPLIFIER MODULES 有权
    具有多个低噪声放大器模块的无线电频率（RF）前端

    公开(公告)号：US20150333941A1

    公开(公告)日：2015-11-19

    申请号：US14671939

    申请日：2015-03-27

    申请人： QUALCOMM Incorporated

    发明人： Dongling Pan ,  Aleksandar Miodrag Tasic ,  Rajagopalan Rangarajan ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Yiwu Tang

    IPC分类号： H04L27/06 ,  H04B7/26 ,  H04B1/10

    CPC分类号： H04L27/063 ,  H04B1/005 ,  H04B1/10 ,  H04B7/26

    摘要： A radio frequency (RF) front end having multiple low noise amplifiers modules is disclosed. In an exemplary embodiment, an apparatus includes at least one first stage amplifier configured to amplify received carrier signals to generate at least one first stage carrier group. Each first stage carrier group includes a respective portion of the carrier signals. The apparatus also includes second stage amplifiers configured to amplify the first stage carrier groups. Each second stage amplifier configured to amplify a respective first stage carrier group to generate two second stage output signals that may be output to different demodulation stages where each demodulation stage demodulates a selected carrier signal.

    摘要翻译： 公开了具有多个低噪声放大器模块的射频（RF）前端。 在示例性实施例中，装置包括至少一个第一级放大器，其配置成放大接收的载波信号以产生至少一个第一级载波组。 每个第一级载波组包括载波信号的相应部分。 该装置还包括配置成放大第一级载波组的第二级放大器。 每个第二级放大器被配置为放大相应的第一级载波组以产生两个第二级输出信号，其可以被输出到不同的解调级，其中每个解调级解调所选择的载波信号。

    System for digital television broadcasting using modified 2/3 trellis coding
    44.
    发明授权
    System for digital television broadcasting using modified 2/3 trellis coding 有权
    使用修改的2/3网格编码的数字电视广播系统

    公开(公告)号：US08005166B2

    公开(公告)日：2011-08-23

    申请号：US11978462

    申请日：2007-10-29

    申请人： Allen LeRoy Limberg

    发明人： Allen LeRoy Limberg

    IPC分类号： H04L27/00

    CPC分类号： H04L27/04 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/6538 ,  H04H20/65 ,  H04H40/27 ,  H04H60/11 ,  H04L27/063

    摘要： 8VSB-compatible DTV broadcasting that employs outer coding of a sort in which interleaved data and outer coding parity are inner coded by the ⅔ trellis code encoder is improved. This is done by recoding each successive pair of bits in the interleaved data and outer coding parity in accordance with an “anti-Gray” code before being inner coded by the ⅔ trellis code encoder. Accordingly, in the DTV receiver an adjacent-bin error during data slicing may generate a double-bit error in a pair of bits as ⅔ trellis decoded, but this is reduced to a single-bit error after the pair of bits is recoded in accordance with a Gray coding procedure. In one example of such recoding, 10 and 11 bit-pairs of the interleaved data and outer coding parity are recoded to 11 and 10 bit-pairs respectively, but the 00 and 01 bit-pairs are not recoded.

    摘要翻译： 采用8VSB兼容的数字电视广播，其使用外部编码，其中交织数据和外部编码奇偶校验由⅔格码编码器进行内部编码。 这是通过在由格网格码编码器进行内部编码之前根据“反灰色”代码重新编码交织数据中的每个连续的比特对和外部编码奇偶校验来完成的。 因此，在DTV接收机中，数据分片期间的相邻二进制位错误可能会在⅔格状解码时产生一对比特中的双位错误，但是在按照一致的位重新编码该比特位之后，这会减少到单位错误 用Gray编码程序。 在这种重新编码的一个示例中，交织数据和外部编码奇偶校验的10和11位对分别被重新编码为11位和10位，但00和01位对不被重新编码。

    Demodulation method and apparatus
    46.
    发明授权
    Demodulation method and apparatus 有权
    解调方法和装置

    公开(公告)号：US07482862B2

    公开(公告)日：2009-01-27

    申请号：US11729843

    申请日：2007-03-30

    申请人： Tarik Aouine ,  Frederic Coutant ,  Michel Gaeta

    发明人： Tarik Aouine ,  Frederic Coutant ,  Michel Gaeta

    IPC分类号： H03D1/00 ,  H03D3/00 ,  H04L27/14

    CPC分类号： H04L27/2334 ,  H04L27/0008 ,  H04L27/063 ,  H04L27/08 ,  H04L27/2331

    摘要： A demodulation circuit and method are provided. The demodulation circuit includes a transformation circuit which is configured to transform the received signal into a modified signal representation in which both amplitude-varying information and frequency-varying information are converted to a uniform representation; and a processing circuit which is configured to process the modified signal representation to demodulate the received signal based on the uniform representation. The method includes transforming the signal into a modified signal representation in which both amplitude-varying information and frequency-varying information are converted to a uniform representation; and processing the modified signal representation to demodulate the signal based on the uniform representation.

    摘要翻译： 提供了解调电路和方法。 解调电路包括变换电路，其被配置为将接收到的信号变换为修改的信号表示，其中将幅度变化信息和频率变化信息都转换为均匀表示; 以及处理电路，被配置为处理所述修改的信号表示以基于所述均匀表示来解调所接收的信号。 该方法包括将信号变换成修改的信号表示，其中幅度变化信息和频率变化信息均被转换为均匀表示; 以及处理所述修改的信号表示以基于所述均匀表示来解调所述信号。

    Mobile radio receiver device
    48.
    发明授权
    Mobile radio receiver device 有权
    移动无线电接收设备

    公开(公告)号：US07356324B2

    公开(公告)日：2008-04-08

    申请号：US11020747

    申请日：2004-12-23

    申请人： Markus Hammes ,  Stefan Van Waasen

    发明人： Markus Hammes ,  Stefan Van Waasen

    IPC分类号： H04B1/26

    CPC分类号： H04B1/28 ,  H03D3/007 ,  H03D7/166 ,  H04B1/302 ,  H04B1/403 ,  H04L27/063 ,  H04L27/2332 ,  H04L27/3854

    摘要： The invention is directed to a receiver arrangement, for example, in a mobile radio, which allows the use of slowly locking phase locked loops for a point-to-point connection between two transceivers, even in the case of a heterodyne receiver structure. The need to change channels between a transmission slot and a reception slot is avoided by virtue of a changeover device being provided for the purpose of interchanging the in-phase and quadrature components at the input side on a down-conversion frequency mixer. This advantageously allows either the upper sideband or the lower sideband of a useful signal to be down-converted without the need to change channel.

    摘要翻译： 本发明涉及例如在移动无线电中的接收器装置，其允许在两个收发器之间的点对点连接中使用缓慢锁定的锁相环，即使在外差接收器结构的情况下也是如此。 通过提供转换装置来避免在传输时隙和接收时隙之间改变信道的需要，以便在下变频混频器上在输入侧交换同相和正交分量。 这有利地允许下行转换有用信号的上边带或下边带，而不需要改变信道。

    Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner
    49.
    发明授权
    Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner 有权
    用于检测由多径传播引起的波纹和控制接收天线和调谐器的装置和方法

    公开(公告)号：US07215939B2

    公开(公告)日：2007-05-08

    申请号：US10484899

    申请日：2001-08-02

    申请人： Max Ward Muterspaugh

    发明人： Max Ward Muterspaugh

    IPC分类号： H04B1/10 ,  H04B1/04 ,  H04B1/16

    CPC分类号： H04B1/1081 ,  H01Q1/125 ,  H01Q1/1257 ,  H01Q3/04 ,  H04B1/18 ,  H04B7/005 ,  H04B7/0802 ,  H04B7/10 ,  H04L1/20 ,  H04L27/01 ,  H04L27/063 ,  H04N5/211 ,  H04N5/44 ,  H04N5/50

    摘要： Improved signal reception is provided in a digital television signal received by identifying and mitigating multipath signal effects prior to demodulation and equalization. According to an exemplary embodiment, a digital television signal is received having multipath signal effects which cause a plurality of ripples in the received signal. The amplitude of at least one of the ripples and the frequency separation between at least two of the ripples are detected. At least one of an antenna and a tuner is controlled in dependence upon the detection. Signal demodulation and equalization operations may be performed after at least one of the antenna and the tuner is controlled.

    摘要翻译： 通过在解调和均衡之前识别和减轻多路径信号效应，在接收的数字电视信号中提供改进的信号接收。 根据示例性实施例，接收具有导致接收信号中的多个波纹的多径信号效应的数字电视信号。 检测至少两个波纹之间的至少一个波纹和频率间隔的振幅。 根据检测来控制天线和调谐器中的至少一个。 可以在控制天线和调谐器中的至少一个之后执行信号解调和均衡操作。

    Video receiver with reduced power mode
    50.
    发明申请
    Video receiver with reduced power mode 有权
    具有降低功耗模式的视频接收器

    公开(公告)号：US20050243220A1

    公开(公告)日：2005-11-03

    申请号：US11120377

    申请日：2005-05-02

    申请人： Weijie Yun ,  Samuel Sheng

    发明人： Weijie Yun ,  Samuel Sheng

    IPC分类号： H03D3/00 ,  H03D7/16 ,  H04L25/06 ,  H04L27/06 ,  H04N5/44 ,  H04N5/455 ,  H04N5/50 ,  H04N5/63

    CPC分类号： H03D3/008 ,  H03D7/165 ,  H03D2200/0047 ,  H04L25/061 ,  H04L27/063 ,  H04N5/44 ,  H04N5/455 ,  H04N5/50 ,  H04N5/63

    摘要： An integrated circuit device having a television signal tuner, video decoder and power control circuit. The television signal tuner selects one of a plurality of television channels, and the video decoder converts a television signal conveyed in the selected television channel into a video display signal. The power control circuit alternately enables and disables the television tuner to enable reception of a first portion of video information conveyed in the television signal and to disable reception of a second portion of the video information.

    摘要翻译： 一种具有电视信号调谐器，视频解码器和功率控制电路的集成电路装置。 电视信号调谐器选择多个电视频道中的一个，并且视频解码器将在所选择的电视频道中传送的电视信号转换为视频显示信号。 功率控制电路交替地启用和禁用电视调谐器以能够接收在电视信号中传送的视频信息的第一部分，并且禁止接收视频信息的第二部分。