Sound intermediate frequency demodulator and sound intermediate frequency detecting method thereof
    2.
    发明授权
    Sound intermediate frequency demodulator and sound intermediate frequency detecting method thereof 有权
    声音中频解调器及其声频中频检测方法

    公开(公告)号:US08184212B2

    公开(公告)日:2012-05-22

    申请号:US12510270

    申请日:2009-07-28

    IPC分类号: H04N5/60 H04N7/00

    CPC分类号: H04N5/60 H04N5/605

    摘要: A sound-IF demodulator including a first demodulating unit and a second demodulating unit and a sound-IF detecting method thereof are provided. A sound de-matrix unit is adapted to generate a driving signal by de-matrixing outputs of the sound-IF demodulator. The first demodulating unit generates a first demodulated signal to the sound de-matrix unit by demodulating the first carrier signal. The second demodulating unit detects the signal quality of the sound signal and generates a second demodulated signal to the sound de-matrix unit and/or the first demodulating unit by demodulating the second carrier signal. When the second demodulating unit is idle, the second demodulating unit is programmed to select a corresponding standard among a plurality of predetermined standards for the sound signal according to the signal quality of the sound signal, so that the sound-IF demodulator is programmed to demodulate the sound signal in the corresponding standard.

    摘要翻译: 提供了包括第一解调单元和第二解调单元以及声音IF检测方法的声音中频解调器。 声音解矩阵单元适于通过对声 - IF解调器的输出进行去矩阵化来产生驱动信号。 第一解调单元通过对第一载波信号进行解调来生成对声音去矩阵单元的第一解调信号。 第二解调单元检测声音信号的信号质量,并通过对第二载波信号进行解调来产生第二解调信号给声音去矩阵单元和/或第一解调单元。 当第二解调单元空闲时,第二解调单元被编程为根据声音信号的信号质量在声音信号的多个预定标准中选择相应的标准,使得声IF解调器被编程为解调 声音信号在相应的标准。

    SOUND INTERMEDIATE FREQUENCY DEMODULATOR AND SOUND INTERMEDIATE FREQUENCY DETECTING METHOD THEREOF
    3.
    发明申请
    SOUND INTERMEDIATE FREQUENCY DEMODULATOR AND SOUND INTERMEDIATE FREQUENCY DETECTING METHOD THEREOF 有权
    声频中频解调器及其中音频检测方法

    公开(公告)号:US20110025926A1

    公开(公告)日:2011-02-03

    申请号:US12510270

    申请日:2009-07-28

    IPC分类号: H04N5/60

    CPC分类号: H04N5/60 H04N5/605

    摘要: A sound-IF demodulator including a first demodulating unit and a second demodulating unit and a sound-IF detecting method thereof are provided. A sound de-matrix unit is adapted to generate a driving signal by de-matrixing outputs of the sound-IF demodulator. The first demodulating unit generates a first demodulated signal to the sound de-matrix unit by demodulating the first carrier signal. The second demodulating unit detects the signal quality of the sound signal and generates a second demodulated signal to the sound de-matrix unit and/or the first demodulating unit by demodulating the second carrier signal. When the second demodulating unit is idle, the second demodulating unit is programmed to select a corresponding standard among a plurality of predetermined standards for the sound signal according to the signal quality of the sound signal, so that the sound-IF demodulator is programmed to demodulate the sound signal in the corresponding standard.

    摘要翻译: 提供了包括第一解调单元和第二解调单元以及声音IF检测方法的声音中频解调器。 声音解矩阵单元适于通过对声 - IF解调器的输出进行去矩阵化来产生驱动信号。 第一解调单元通过对第一载波信号进行解调来生成对声音去矩阵单元的第一解调信号。 第二解调单元检测声音信号的信号质量,并通过对第二载波信号进行解调来产生第二解调信号给声音去矩阵单元和/或第一解调单元。 当第二解调单元空闲时,第二解调单元被编程为根据声音信号的信号质量在声音信号的多个预定标准中选择相应的标准,使得声IF解调器被编程为解调 声音信号在相应的标准。