公开(公告)号：US09048920B2

公开(公告)日：2015-06-02

申请号：US14389259

申请日：2012-03-30

申请人： Chow Loong Cheah ,  Kar Boon Oung ,  V. C. Prakash V K Chacko

发明人： Chow Loong Cheah ,  Kar Boon Oung ,  V. C. Prakash V K Chacko

IPC分类号： H04B1/10 ,  H04B1/12

CPC分类号： H04B1/123 ,  H03D7/165 ,  H03D7/18 ,  H04B1/10 ,  H04B1/30 ,  H04B2001/305

摘要： An apparatus and method for reducing FM audio artifacts in a receiver are provided. A direct conversion radio frequency (RF) receiver converts an analog FM signal into a phase shifted digital low IF signal. A digital controller coupled to the analog FM receiver provides adaptive frequency translation for different channel spacing and provides adaptive low IF configuration through the different channel spacing, thereby suppressing audio artifacts.

摘要翻译： 提供了用于减少接收机中的FM音频伪像的装置和方法。 直接转换射频（RF）接收机将模拟FM信号转换为相移数字低IF信号。 耦合到模拟FM接收机的数字控制器为不同的信道间隔提供自适应频率转换，并通过不同的信道间隔提供自适应低IF配置，从而抑制音频伪像。

公开(公告)号：US07474711B2

公开(公告)日：2009-01-06

申请号：US11123291

申请日：2005-05-06

申请人： Charles R. Ruelke ,  Kar Boon Oung ,  Ting Fook Tang ,  Richard S. Young

发明人： Charles R. Ruelke ,  Kar Boon Oung ,  Ting Fook Tang ,  Richard S. Young

IPC分类号： H03D3/22 ,  H04L25/10 ,  H04L27/00 ,  H04L27/22

CPC分类号： H04L25/20

摘要： A method for correcting I/Q imbalance in a received signal is disclosed. The method includes the steps of grouping (202) the received signal into a predetermined number of clusters, and determining (204) at least one coefficient value by feeding the predetermined number of clusters into a nested loop. The method further includes computing (206) a compensation value based on the at least one coefficient value, and correcting (208) the I/Q imbalance in the received signal by using the compensation value.

摘要翻译： 公开了一种用于校正接收信号中的I / Q不平衡的方法。 该方法包括以下步骤：将接收到的信号分组（202）到预定数量的聚类中，并且通过将预定数量的聚类馈送到嵌套循环来确定（204）至少一个系数值。 该方法还包括基于至少一个系数值来计算（206）补偿值，并通过使用补偿值来校正（208）接收信号中的I / Q不平衡。

公开(公告)号：US08837748B2

公开(公告)日：2014-09-16

申请号：US13306136

申请日：2011-11-29

申请人： V. C. Prakash VK Chacko ,  Thean Hai Ooi ,  Kar Boon Oung ,  Cheah Heng Tan ,  Huoy Thyng Yow

发明人： V. C. Prakash VK Chacko ,  Thean Hai Ooi ,  Kar Boon Oung ,  Cheah Heng Tan ,  Huoy Thyng Yow

IPC分类号： H04B15/00

CPC分类号： H04R3/02 ,  H04R2499/11

摘要： A method and apparatus for receiving and playing a signal in a radio receiver to suppress microphonic feedback are provided by alternately pitch shifting a received audio signal. The pitch of the received audio signal is alternately shifted up and then down, repeatedly over successive intervals of the audio signal, to produce a pitch swing signal which is then played over a speaker. The alternating pitch shifting prevents the buildup of regenerative feedback normally caused by acoustic vibrations coupling into the radio receiver.

摘要翻译： 通过对所接收的音频信号进行交替间距移位来提供用于在无线电接收机中接收和播放信号以抑制麦克风反馈的方法和装置。 所接收到的音频信号的音调在音频信号的连续间隔上重复地上下颠倒，以产生音调摆动信号，然后在扬声器上播放。 交替的间距移位防止通常由耦合到无线电接收机中的声学振动引起的再生反馈的累积。