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1. 发明授权

US4748659A Calling signal transmission apparatus 失效
标题翻译：呼叫信号传输装置
公开(公告)号：US4748659A
公开(公告)日：1988-05-31
申请号：US904495
申请日：1986-09-08
申请人： Kiyoshi Kasahara , Kenichi Ogawa , Kenji Takato , Shoji Nojiri , Yoshimi Iijima , Yasuo Miyazaki , Mitsutoshi Ayano , Kiyoshi Shibuya , Atsuo Serikawa
发明人： Kiyoshi Kasahara , Kenichi Ogawa , Kenji Takato , Shoji Nojiri , Yoshimi Iijima , Yasuo Miyazaki , Mitsutoshi Ayano , Kiyoshi Shibuya , Atsuo Serikawa
IPC分类号： H04M19/02
CPC分类号： H04M19/026
摘要： 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.
摘要翻译：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。

2. 发明授权

US4113990A Signal sending control system 失效
标题翻译：信号发送控制系统
公开(公告)号：US4113990A
公开(公告)日：1978-09-12
申请号：US788971
申请日：1977-04-19
申请人： Shoji Nojiri , Hisao Kanzaki , Nobuyuki Yasoshima , Yasuo Satake , Kenichi Ogawa
发明人： Shoji Nojiri , Hisao Kanzaki , Nobuyuki Yasoshima , Yasuo Satake , Kenichi Ogawa
IPC分类号： H04M3/02 , H04M19/02 , H04M3/04
CPC分类号： H04M19/02
摘要： A signal sending control system for use in a telephone system includes a ringing signal sending circuit having a signal source for generating a continuous ringing signal, interrupting means for controlling the sending of the ringing signal over each subscriber line, one switch for each subscriber line for selectively and switchably connecting the respective subscriber line to a speech network of the system and to the ringing signal sending circuit, a common controller for providing control information as to the duration of the ringing signal, and a control circuit for individually controlling the switching circuit of each subscriber line in accordance with the control information and for controlling the transmission duration of the ringing signal.

3. 发明授权

US4656625A Switching system having capability for telecommunication conferences 失效
标题翻译：具有电信会议能力的交换系统
公开(公告)号：US4656625A
公开(公告)日：1987-04-07
申请号：US738643
申请日：1985-05-28
申请人： Shoji Nojiri , Kenichi Ogawa , Koso Murakami
发明人： Shoji Nojiri , Kenichi Ogawa , Koso Murakami
IPC分类号： H04M3/56 , H04Q11/04 , H04J3/02 , H04M3/00
CPC分类号： H04M3/561
摘要： A switching system having a capability for telecommunication conferences, including therein, at least, a speech path memory, a mixing circuit, and a feedback circuit. The speech path memory is operative to store therein voice data signals provided from subscribers holding a conference. The mixing circuit is operative to mix two voice data signals. The feedback circuit is operative to feed the thus mixed voice data signals back to the speech path memory to accumulate therein each set of the mixed voice data signals for the subscriber's subscriber except each own voice data signal, whereby the subscribers receive respective accumulated voice data signals.
摘要翻译：具有电信会议能力的交换系统，其中至少包括语音路径存储器，混合电路和反馈电路。语音路径存储器用于存储由持有会议的用户提供的语音数据信号。混合电路可操作以混合两个语音数据信号。反馈电路用于将这样混合的语音数据信号反馈给语音路径存储器，以在每个用户用户的每一组混合语音数据信号中积累每个自己的语音数据信号，由此用户接收相应的累积语音数据信号。

4. 发明授权

US4512015A Digital time-division switch 失效
标题翻译：数字时分开关
公开(公告)号：US4512015A
公开(公告)日：1985-04-16
申请号：US453574
申请日：1982-12-27
申请人： Yoshiharu Kano , Makoto Fujisawa , Shoji Nojiri , Yoshikazu Tanaka
发明人： Yoshiharu Kano , Makoto Fujisawa , Shoji Nojiri , Yoshikazu Tanaka
IPC分类号： H04M19/02 , H04Q11/04 , H04J3/12
CPC分类号： H04Q11/04
摘要： A digital time-divison switch comprising a multiplexer which multiplexes digitalized voice signals, supervisory signals transmitted from line circuit portions, and so forth, and which inserts these signals into predetermined time slots. The digital switch also includes a signal-extracting circuit which extracts the supervisory signals from the time slots assigned for control signals and which transmits the extracted supervisory signals to a common control unit through the supervisory signal receiver, a switching network which switches data time slots, a signal inserting circuit for transmitting control signals to the line circuit portions, and a distributor circuit for distributing the voice signals and so on to each line circuit. The switch further includes a second signal-inserting circuit disposed between the signal-extracting circuit and the switching network, the second signal-inserting circuit inserting one-way signals transmitted from a switching network portion to the line circuit portions into the time slots assigned for control signals, in the other words into time slots into which supervisory signals extracted by the signal-extracting circuit are previously inserted.
摘要翻译：一种数字时分切换开关，包括多路复用器，其复用数字化语音信号，从线路电路部分发送的监控信号等，并将这些信号插入到预定时隙中。数字开关还包括信号提取电路，其从分配给控制信号的时隙中提取监控信号，并且通过监控信号接收器将提取的监控信号发送到公共控制单元，切换数据时隙的交换网络，用于向线路电路部分发送控制信号的信号插入电路和用于将语音信号等分配到每个线路电路的分配器电路。该开关还包括设置在信号提取电路和交换网络之间的第二信号插入电路，第二信号插入电路将从交换网络部分发送的单向信号插入线路电路部分到分配给控制信号，换句话说就是预先插入由信号提取电路提取的监控信号的时隙。

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