IMPROVEMENT TO THE PRECISION/SPEED COMPROMISE OF A SYNCHRONIZATION SIGNAL RECEPTION DEVICE
    1.
    发明公开
    IMPROVEMENT TO THE PRECISION/SPEED COMPROMISE OF A SYNCHRONIZATION SIGNAL RECEPTION DEVICE 有权
    改善精度的/ GESCHWINDINGKEITSBALANCE同步信号接收装置

    公开(公告)号:EP2153664A1

    公开(公告)日:2010-02-17

    申请号:EP08760667.9

    申请日:2008-06-06

    申请人: Thomson Licensing

    IPC分类号: H04N7/62

    摘要: The present invention relates to a reception device able to receive packets in a communication network comprising at least two stations. The device comprises means for: - receiving packets containing samples PCRr of the network which originate from data sampled every period Tsmp, where Tsmp emanates from a time base synchronized on all the stations of the said network; - regenerating a counting ramp CSR_PCR1 with the aid of a loop PLL1 receiving the samples PCRr and furthermore delivering local samples PCR_IOC1 every period Tsmp and a clock CLK_OUt1; the phase-locked loop PLL1 comprises: - a samples comparator CMP1 comparing the samples PCRr and the local samples and delivering an error signal ERR; - a corrector COR1 receiving the signal ERR and delivering a corrected error signal ERC, the corrector COR1 having a static gain equal to 1; - a digital oscillator VCO1 receiving the corrected error signal ERC and delivering the clock CLK_OUt1, which has a frequency dependent on the signal ERC and is proportional to a gain G. According to the invention, the phase-locked loop PLL1 comprises, furthermore, a gain adjustment device DAG1 which determines a gain value G as a function of the error signal ERR.