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    • 21. 发明授权
    • Signal processing apparatus capable of processing received signals of
different bit rates
    • 能够处理不同比特率的接收信号的信号处理装置
    • US6097735A
    • 2000-08-01
    • US919675
    • 1997-08-28
    • Nobuyuki Nemoto
    • Nobuyuki Nemoto
    • H04J3/00H04J3/06H04L25/02H04J3/22
    • H04L25/0262H04J3/0608
    • In a signal processing circuit capable of handling different signal rates, an STS-3 signal input as 78 M.times.2 parallel signals is converted by a serial-to-parallel converter into 19 M.times.8 parallel signals, thus making the number of signal lines equal to that of an STS-12 signal input as 78 M.times.8 parallel signals. Depending on whether the mode is STS-12 mode or STS-3 mode, a first selector selects the 78 M.times.8 parallel signals of STS-12 or the 19 M.times.8 parallel signals of STS-3, and supplies the selected signals to a signal processor. Depending on whether the mode is STS-12 mode or STS-3 mode, a second selector selects a 78-M clock or a 19-M clock and supplies the selected clock to the signal processor.
    • 在能够处理不同信号速率的信号处理电路中,输入为78 Mx2并行信号的STS-3信号由串并转换器转换为19 M×8并行信号,从而使信号线的数量等于 STS-12信号输入为78 Mx8并行信号。 根据模式是STS-12模式还是STS-3模式,第一选择器选择STS-12的78 Mx8并行信号或STS-3的19 Mx8并行信号,并将所选信号提供给信号处理器。 根据模式是STS-12模式还是STS-3模式,第二选择器选择78-M时钟或19-M时钟,并将所选时钟提供给信号处理器。