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    • 1. 发明授权
    • Calling signal transmission apparatus
    • 呼叫信号传输装置
    • US4748659A
    • 1988-05-31
    • US904495
    • 1986-09-08
    • Kiyoshi KasaharaKenichi OgawaKenji TakatoShoji NojiriYoshimi IijimaYasuo MiyazakiMitsutoshi AyanoKiyoshi ShibuyaAtsuo Serikawa
    • Kiyoshi KasaharaKenichi OgawaKenji TakatoShoji NojiriYoshimi IijimaYasuo MiyazakiMitsutoshi AyanoKiyoshi ShibuyaAtsuo Serikawa
    • H04M19/02
    • H04M19/026
    • In a calling signal transmitting apparatus, a ring trip equipment, including a ring trip detecting circuit for detecting a ring trip signal in response to an off-hook operation of the telephone set during a signal state of an intermittent ringing signal and a loop detecting circuit for detecting a loop signal in response to an off-hook operation of the telephone set during a nonsignal state of the intermittent ringing signal. Also included are a logical OR gate circuit, for providing, as a status signal, a logical sum of the ring trip signal and the loop signal, and a supervising circuit for supervising the status signal. When an incoming call is being received by the telephone set, when the supervising circuit detects an off-hook state in the status signal, the supervising circuit stops the transmission of a ringing signal to the telephone set, and carries out a second supervising operation for supervising the status signal, and, if an on-hook state is detected during the second supervising operation, said supervising circuit again transfers the ringing signal to the telephone set.
    • 在呼叫信号发送装置中,环路跳闸设备包括环路跳闸检测电路,用于在间歇振铃信号的信号状态期间响应于电话机的摘机操作来检测环路跳闸信号,以及环路检测电路 用于在间歇振铃信号的非信号状态期间响应于电话机的摘机操作来检测回路信号。 还包括逻辑或门电路,用于提供环路跳闸信号和环路信号的逻辑和作为状态信号,以及用于监视状态信号的监控电路。 当电话机接收到来电时,当监控电路在状态信号中检测到摘机状态时,监控电路停止向电话机发送振铃信号,并执行第二监视操作 监视状态信号,并且如果在第二监视操作期间检测到挂机状态,则所述监控电路再次将振铃信号传送到电话机。
    • 6. 发明授权
    • Optical transmission equipment and method for controlling thereof
    • 光传输设备及其控制方法
    • US08515287B2
    • 2013-08-20
    • US12136155
    • 2008-06-10
    • Kenichi OgawaKazuhiro WatanabeHiroyuki Nakano
    • Kenichi OgawaKazuhiro WatanabeHiroyuki Nakano
    • H04J14/02H04B10/00H04B10/12H04B10/06
    • H04B10/25133H04B2210/252
    • The optical transmission equipment includes: a demultiplexer for demultiplexing a transmitted wavelength-multiplexed optical signal to first and second optical signals; a first variable dispersion compensation unit; a second variable dispersion compensation unit; a first error detector; a second error detector; and a dispersion compensation control unit for controlling dispersion compensation amounts of the first and second variable dispersion compensation units based on the detection result of the first or second error detector. Upon detection of a signal error in the first optical signal, the first variable dispersion compensation unit is controlled to change from a first compensation amount to a third compensation amount, and the second variable dispersion compensation unit is controlled to change from a second compensation amount to a fourth compensation amount.
    • 光传输设备包括:解复用器,用于将传输的波分复用光信号解复用到第一和第二光信号; 第一可变色散补偿单元; 第二可变色散补偿单元; 第一个误差检测器; 第二误差检测器; 以及色散补偿控制单元,用于基于第一或第二误差检测器的检测结果来控制第一和第二可变色散补偿单元的色散补偿量。 在检测到第一光信号中的信号误差时,控制第一可变色散补偿单元从第一补偿量变为第三补偿量,并且控制第二可变色散补偿单元从第二补偿量变为 第四补偿金额。