专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS5864857A TOTAL HEAT GENERATION VALUE RESTRICTING DEVICE 失效
公开(公告)号：JPS5864857A
公开(公告)日：1983-04-18
申请号：JP16345681
申请日：1981-10-15
申请人： OKI ELECTRIC IND CO LTD , NIPPON KENTETSU CO LTD , NIPPON ELECTRIC CO , HITACHI LTD , FUJITSU LTD
发明人： SHIRAISHI OSAMU , KOINUMA TAKEO , HASEGAWA KOUICHI , IRIBE SHINICHI , SATOU HIROAKI
IPC分类号： H04M3/22 , H04M3/36 , H04M19/00 , H04Q3/00
摘要： PURPOSE:To ensure the stable operation for subscriber circuits in the same unit, through the suppression of heat generation value, by suppressing the number of simultaneous calls a prescribed number or more for a plurality of subscribers in the unit. CONSTITUTION:A plurality of subscriber circuits are loaded in one unit and a subscriber terminal 7 is connected to a power supply 26 via a telephone cable 6, equivalent power feeding resistors 23, 24 and a channel controlling circuit 25. The circuit 25 controls a channel current with a signal from a subscriber circuit controlling circuit 29 receiving the subscriber state signal of a subscriber state monitoring circuit 28. In this case, the controlling circuit 29 discriminates a subscriber state signal and gives a channel current stop signal to the control circuit 25 of subscriber circuits which are not busy, when the simultaneous calls of the subscribers in the same unit is a prescribed criterion or over. Thus, the circuit 25 inhibits the calling of the subscribers except tentative call.

2. 发明专利

JPS5893391A POWER ON RESET SYSTEM FOR ELECTRONIC CIRCUIT PACKAGE 失效
公开(公告)号：JPS5893391A
公开(公告)日：1983-06-03
申请号：JP19249981
申请日：1981-11-30
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： SHIBATA TOMOHIKO , KOINUMA TAKEO , HANDA TOORU , SATOU HIDEHIRO , YOSHINO HARUYUKI
IPC分类号： H05K1/11 , H03K3/02 , H03K17/22 , H05K1/02

3. 发明专利

JPS58101557A OVERCURRENT PROTECTION CIRCUIT 失效
公开(公告)号：JPS58101557A
公开(公告)日：1983-06-16
申请号：JP20015581
申请日：1981-12-14
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： KOUNO TETSUYA , KOINUMA TAKEO , YAMAGUCHI TAKASHI , IMAI MASAMICHI , YOSHINO HARUYUKI
IPC分类号： H04M19/00
摘要： PURPOSE:To protect a subscriber circuit from overcurrent due to a failure in a subscriber line, by providing a temperature detection element near a feeding transistor (TR) of a electronic type subscriber circuit. CONSTITUTION:A subscriber telephone set (not shown) is fed from a power supply VBB via feeding TRs6, 13 controlled with current limiting resistors 8, 16 and a call current driving circuit 11. A temperature detection element 1 such as PTC thermister is provided near the TRs 6, 13. If a feeding current (i) is excessive due to a failure such as grounding of a subscriber line, the temperature of the TRs6, 13 is risen, the resistance value of the element 1 is increased, and the potential of a connecting point 17 between the said element 1 and a resistor 3 is increased. A comparator 2 controls the call current driving circuit 11 to limit the call current so as not to make the current (i) excessive.

4. 发明专利

JPS58151109A HIGH IMPEDANCE TERMINATING SYSTEM FOR SUBSCRIBER CIRCUIT 失效
公开(公告)号：JPS58151109A
公开(公告)日：1983-09-08
申请号：JP3346882
申请日：1982-03-03
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： OONO MASAHIKO , KOINUMA TAKEO , NARITA HARUTOMO , SAKURAI YOSHITO , TAKADA KENZOU
IPC分类号： H04B3/02 , H03H11/28 , H04M19/00
摘要： PURPOSE:To connect a circuit to any terminal, by setting an input impedance of a subscriber circuit viewed from a subscriber line sufficiently higher and connecting an arbitrary impedance element to the subscriber line in parallel with said subscriber circuit. CONSTITUTION:Figure shows an example of a feeding circuit of a high input impedance subscriber circuit. High resistors 10, 11, 16, 17 provide a DC bias to the base of two transistors (TR) 12, 13 and set said TRs 12, 13 to a suitable active region. In this constitution, a DC resistor viewing this circuit between the subscriber line terminals 1 and 2 is a constant value. The bases of the two TRs 12, 13 are connected to a capacitor 18 to by-pass the AC component, allowing to set the input impedance of the circuit high viewed from the line terminals 1 and 2.

5. 发明专利

JPS58103288A PROTECTING SYSTEM OF SCAN INFORMATION 失效
公开(公告)号：JPS58103288A
公开(公告)日：1983-06-20
申请号：JP20216281
申请日：1981-12-15
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： YOSHINO HARUYUKI , KOINUMA TAKEO , SHIRAISHI OSAMU , OONO MASAHIKO , IRIBE SHINICHI
IPC分类号： H04Q3/72
摘要： PURPOSE:To avoid an uncertain state of the scan information, by detecting the cut-off state of a power supply in case it is cut off and setting forcibly the scan information to an OFF state of a call current. CONSTITUTION:The 1st and 2nd power supplies are applied to the supply lines 2 and 3 respectively and then to a cut-off detecting circuit containing a diode 8, a resistance 9 and 10. The line 2 is connected to a supply stopping circuit 4 for call current; while the line 3 is connected to an initializing circuit and a control circuit 5. The outputs of the cut-off detecting circuit and a circuit 6 are fed to the circuit 5 via an OR gate 7. Thus the cut-off state is detected by the cut-off detecting circuit when the supply of the call current is cut off. Then an OR7 is secured between the output of the cut-off detecting circuit and the output signal of the circuit 6, and the registers within the circuit 5 are cleared. As a result, the scan information is held at an OFF state of the call current.

6. 发明专利

JPS5870693A CONSTITUTING SYSTEM FOR RECEIVER FOR COIN DISCRIMINATING SIGNAL 失效
公开(公告)号：JPS5870693A
公开(公告)日：1983-04-27
申请号：JP16792981
申请日：1981-10-22
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , HITACHI LTD , FUJITSU LTD
发明人： NANBA SHINJI , KOINUMA TAKEO , OONO MASAHIKO , OOTSUKI KENICHI , YOSHINO HARUYUKI
IPC分类号： H04M15/00 , H04M17/02
摘要： PURPOSE:To attain small size, light weight and economy of a receiver for coin discriminating signal, by providing the receiver for coin discrimination for 4-wire side, through the use of a hybrid transformer. CONSTITUTION:When a coin discrimination signal from a public telephone set 1 is transmitted to a subscriber circuit via a subscriber line, the circuit executes two-four wire conversion and balanced/unbalanced conversion of the signal in a hybrid transformer 21 and the result is given to a receiver 23. When the signal is received at the receiver 23, the signal is terminated at a termination circuit 22, a detection circuit 4 performs coin discrimination for required control. The coin discrimination signal terminated is suppressed through the operation of a block circuit 5 and no signal is given to the succeeding stages. Audio signals are terminated in high impedance at the termination circuit 22 and transmitted to succeeding stages without being suppressed at the block circuit 5.

7. 发明专利

JPS61113348A Subscriber circuit 失效
标题翻译：订户电路
公开(公告)号：JPS61113348A
公开(公告)日：1986-05-31
申请号：JP23445884
申请日：1984-11-07
申请人： Fujitsu Ltd , Hitachi Ltd , Nec Corp , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： SHINKAWA HIROSHI , KOINUMA TAKEO , MURAKAMI SUEO , ONO MASAHIKO , IRIBE SHINICHI
IPC分类号： H04M19/00 , H04M3/02 , H04M3/06 , H04Q3/42
摘要： PURPOSE: To ensure non-ringing calling by disconnecting a capacitor from a feedback path and connecting it to the feedback path after polarity inversion while a switch is being interrupted in a digital exchange.
CONSTITUTION: In closing a switch 22 for non-ringing call to a telemeter terminal device 24, a load current IL is fed from a feeding circuit 15. Then in zeroing a voltage V
ab to stop the supply of the load current IL, since the capacitor 14 is connected to the feedback circuit via a diode 26 and a resistor 5, the load current IL is not controlled. Further, in inputting a non-ringing call signal NRS to a current mirror 11 while being superimposed on the control current I1 for polarity inversion, no discharge current except a current I3 is inputted to a current mirror 10, the prescribed control current I1 is outputted and the non-ringing signal is received immediately.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过在数字交换机中断交换机的极性反转之后，断开电容器与反馈路径的连接，并将其连接到反馈路径，确保无振铃呼叫。构成：在关闭用于非电话呼叫到遥测仪终端装置24的开关22时，从馈电电路15馈送负载电流IL。然后，在使电压Vab置零以停止负载电流IL的供应，因为电容器 14通过二极管26和电阻器5连接到反馈电路，不控制负载电流IL。此外，在将非振铃呼叫信号NRS与用于极性反转的控制电流I1重叠的同时向电流镜11输入时，除电流I 3以外的放电电流不被输入到电流镜10，输出规定的控制电流I1 并且立即接收非振铃信号。

8. 发明专利

JPS59161198A Terminal control system 失效
标题翻译：终端控制系统
公开(公告)号：JPS59161198A
公开(公告)日：1984-09-11
申请号：JP3458083
申请日：1983-03-04
申请人： Hitachi Ltd , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： IRIBE SHINICHI , KOINUMA TAKEO , NANBA SHINJI
IPC分类号： H04Q3/42 , H04Q1/38
CPC分类号： H04Q1/38
摘要： PURPOSE:To send out a current inverting signal to a no-ringing terminal by a simple circuit, and to prevent a bell from ringing by discharging all charges accumulated in a capacity of a telephone set to a dummy loop, and subsequently, inverting a current direction and executing the charging. CONSTITUTION:When the contact 301 of a dummy loop forming relay is closed, an impression voltage to a telephone set 102 drops. Subsequently, a cutting relay of a current supplying relay 106 is operated, and its contacts 305, 306 are opened to discharge a capacity of the telephone set 102 completely by a dummy loop resistance 302 and high resistance elements 303, 304. Subsequently, the current is inverted by the contacts 104, 105 of a current inverting relay, and simultaneously, the contact 301 is opened, and the capacity of the telephone set 102 is charged through the elements 303, 304.
摘要翻译：目的：通过简单的电路将电流反相信号发送到无振铃端子，并且通过将在电话机的容量中累积的所有电荷放电到虚拟环路来防止振铃，并且随后将电流反转方向并执行充电。构成：当虚拟环形继电器的触点301闭合时，电话机102的压印电压下降。随后，电流供应继电器106的切断继电器被操作，并且其触点305,306被打开以通过虚拟回路电阻302和高电阻元件303,304完全释放电话机102的容量。随后，电流由电流反相继电器的触点104,105反转，同时触点301断开，电话机102的容量通过元件303,304充电。

9. 发明专利

JPS6240860A METERING PULSE SENDING SYSTEM 失效
公开(公告)号：JPS6240860A
公开(公告)日：1987-02-21
申请号：JP18156985
申请日：1985-08-19
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： EGAWA YUICHI , SHIMODA KAZUO , KOINUMA TAKEO , ISHIZAWA AKIRA
IPC分类号： H04M19/00 , H04M15/00
摘要： PURPOSE:To eliminate the necessity of a large LC filter and to miniaturize a mounting area, by controlling the gradual increase and decrease of a talking current flowing to a subscriber line while maintaining the operation of each constant-resistance feeder circuit. CONSTITUTION:Constant-resistance feeder circuits 1 and 2 are caused to make normal operations by means of constant currents supplied from constant-current circuits 6 and 7 to their feedback loops and gradual increase and decrease in the electric currents of the feedback loops are controlled by current control circuits 4 and 5. Therefore, no large LC filter is required, since gradual increase and decrease in the talking current at a subscriber line can be controlled by means of the current control circuits 4 and 5 and constant-current circuits 6 and 7.

10. 发明专利

JPS5864817A GYRATOR 失效
公开(公告)号：JPS5864817A
公开(公告)日：1983-04-18
申请号：JP16345881
申请日：1981-10-15
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOMAZAKI TOMOKAZU , NANBA SHINJI , KOINUMA TAKEO
IPC分类号： H03H11/42 , H03H11/50
摘要： PURPOSE:To set the capacitance of a capacitor small and to increase the Q of an equivalent inductance, by using a resistor and a capacitor for each admittance of a gyrator circuit as specified. CONSTITUTION:Y4-Y8 are admittances of each element, 1-3 are nodes of this circuit, and V2, V3 are voltages at nodes 2 and 3 respectively. The relation between input terminals Vin and V2 of input terminals 1a, 1b and an output Vout of an operational amplifier 4 is expressed in equations 1 and 2. Thus, an input impedance Zin is expressed in equation 3. Where Y5Y7=Y6Y8 is satisfied, equation 3 is simplified into equation 4. Taking Y4=SC, Y5=1/R5 and Y8=1(that is, resistors R5, R8 are used for Y5, Y8 respectively and a capacitor C is used for Y4) in equation 4, a series circuit of R and L is obtained as given by equation 5. In equation 5, the resisters R5, R8 are included in the imaginary part and the capacitance value of the capacitor C can be set arbitrarily independently of the Q of the equivalent inductance to some extent. Thus, said Q can be increased.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式