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11. 发明专利

JPS5680993A STATE MONITOR SYSTEM 失效
公开(公告)号：JPS5680993A
公开(公告)日：1981-07-02
申请号：JP15778279
申请日：1979-12-05
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO HARUYUKI , USAMI TAKASHI , HASEGAWA KENZOU , USUDA SHIYOUGO , HAMASATO KAZUO , OIKAWA YOSHINORI
IPC分类号： H04Q3/72
摘要： PURPOSE:To monitor the loop state of a subscriber's line by detecting the across voltage of a capacitor by sending talking current to a telephone set by commutating the current of a DC power source and by smoothing the current through a capacitor input type filter. CONSTITUTION:Current from DC power source E is sent to commutation switch SW-C and reactance circuit Z and supplied as channel current Il to telephone set TEl by way of rectification switch SW-REC and low-pass filter. The across voltage of capacitor C of filter F is applied to voltage detecting circuit D. When the voltage of capacitor C is higher than a reference voltage, telephone set TEl is judged to be in the off-hook state and when not, it is judged to be in the on-hook state to turn on light emitting diode LED5, thereby sending a monitor signal to terminal SN.

12. 发明专利

JPS5637768A CALL CURRENT SUPPLY SYSTEM 失效
公开(公告)号：JPS5637768A
公开(公告)日：1981-04-11
申请号：JP11375279
申请日：1979-09-04
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO HARUYUKI , USAMI TAKASHI , HASEGAWA KENZOU , USUDA SHIYOUGO , HAMASATO KAZUO , OIKAWA YOSHINORI
IPC分类号： H04M19/00 , H04M19/02
摘要： PURPOSE:To realize a call current supply system having a small amount of power consumption and a reduced packing space, by producing the bipolar rectangular wave through the commutation of the DC current supply with a certain frequency and then supplying this output to the load via the reactance circuit, the rectifying circuit and the LPF each. CONSTITUTION:The DC power supply E is converted into the bipolar rectangular wave of the frequency FS through the commutation switch SW-C and then rectified by the rectifying circuit REC and via the imaginary impedances IZX1 and X2 to be supplied to the telephone Tel via the line L and in the form of the DC Il after smoothing through the capacitor input and choke output type LPFs each. The IZX1 and X2 are formed by the serial connection between the capacitors C1/C2 and the inductances L1/L2. And no loss of the electric power is caused substantially since the IZ free from the resistance component is applied, and thus the power consumption is extremely small at the feeding circuit. Furthermore, the packing efficiency can be increased since the component parts are composed of the electronic parts.

13. 发明专利

JPS5897957A DIRECT CURRENT POLARITY SWITCHING CIRCUIT 失效
公开(公告)号：JPS5897957A
公开(公告)日：1983-06-10
申请号：JP19706981
申请日：1981-12-08
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： YOSHINO HARUYUKI , HASEGAWA KENZOU , INABE YASUNOBU , UEHARA HIROYASU , MUKAI KANJI , OKUHARA SHINJI
IPC分类号： H04Q3/42 , H03K17/73 , H03K17/732 , H04M19/00 , H04Q1/38
摘要： PURPOSE:To use the titled circuit for the calling device system of an exchange, by controlling turn on and off of a PNPN transistor (TR) from external. CONSTITUTION:A PNP TR9 and an NPN TR10 constitute a PNPN switch. When ''1'' is inputted to a terminal 41, TRs 38, 15 and 24 turn on to absorb a constant current from the base of the TR9. Therefore, the PNPN switch turns on. When ''0'' is inputted to the terminal 41, TRs for driving the PNPN switch turn off. The input level is inverted by a gate 39 and a TR36 turns on. Then, the constant current flows to the base of an NPN TR25, which turns on. The NPN TR10 is cut off and the PNPN switch is turned off.

14. 发明专利

JPS5873265A RING TRIP SYSTEM 失效
公开(公告)号：JPS5873265A
公开(公告)日：1983-05-02
申请号：JP17241881
申请日：1981-10-28
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： HASEGAWA KENZOU , OIKAWA YOSHINORI , ARAI TOSHIO , HASEGAWA KOUICHI , SATOU HIDEHIRO
IPC分类号： H04M3/02
摘要： PURPOSE:To attain DC supply feeding, by triggering of the detection of response of the called party, and transmitting in the earthing transmission mode, and releasing the transmission of callout signal quickly without the state of current interruption on a subscriber line after the response of a called party at the callout singal transmission. CONSTITUTION:The circuitry is constituted that callout signal transmission switches S1-S4, especially the earthing transmission switch S2, are used, the detection of response of a called party 1 is taken as a trigger to immediately obtain the earthing transmission mode, and a ringing signal (CR) is disconnected without the interruption of current to a subscriber line, through the hardware configuration. The line B battery/line A earthing mode is set off through the callout signal release command from the software to obtain a DC feeding mode (line B earthing/line A battery). Especially, a ring trip 3 detects the potential difference across a resistor R2 and monitors the response of the called party with the output of ring trip.

15. 发明专利

JPS5696592A DIRECT CURRENT POLARITY INVERSION PULSE TRANSMISSION SYSTEM 失效
公开(公告)号：JPS5696592A
公开(公告)日：1981-08-04
申请号：JP17154579
申请日：1979-12-29
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO HARUYUKI , USAMI TAKASHI , HASEGAWA KENZOU , USUDA SHIYOUGO , HAMASATO KAZUO , OIKAWA YOSHINORI
IPC分类号： H04M15/00 , H04Q3/00 , H04Q3/42
摘要： PURPOSE:To enable to transmit current polarity inversion pulse and to make small and light the constitution of power supply circuit, by controlling the call current and direction fed to a telephone set through electronic means without electromagnetic relays. CONSTITUTION:The output of a DC power supply E is commutated in a given frequency with a polarity inversion switch SW-C, and a bipolar rectangular wave output with this polarity inversion is fed to a rectifying circuit REC via a reactance circuit Z with a given impedance, the output rectified at the circuit REC is smoothed at a low pass filter F to be fed as call current to a telephone set Tel. The filter G in this circuit consists of transistors TRs 1-4, resistors r1-r4, solidstate inductance including capacitors C1-C4, and capacitor Ci. Phototransistors PT1-PT2 are connected to the post stage of the solidstate inductance so that the call current can be delivered forward or reverse or stopped with external control, allowing to transmit the current polarity inversion pulse.

16. 发明专利

JPS59161172A Call current supplying circuit 失效
标题翻译：呼叫电流供电电路
公开(公告)号：JPS59161172A
公开(公告)日：1984-09-11
申请号：JP3553683
申请日：1983-03-04
申请人： Fujitsu Ltd , Hitachi Ltd , Nec Corp , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： UEKI ISAMU , MORIZAKI SHIGEKI , KIMURA TADAKATSU , TAWARA TOSHIYUKI , KITANO JIYUNJIROU , HASEGAWA KENZOU
IPC分类号： H04M19/00
CPC分类号： H04M19/005
摘要： PURPOSE:To supply stably a call current even in case of an area in which a call current is small, and to make a device small-sized by a conversion to an IC, by turning on and off a feedback loop for comparing a constant-current and a detecting current, by a control signal. CONSTITUTION:A pair of detecting circuits 16, 17 convert each voltage between connecting terminals 12, 13 to a subscriber's circuit and a DC power source 22 to a current by resistances 23, 24 and current mirror circuits 25, 26 and the converted current is supplied to an adding circuit 18, further an output current of the adding circuit 18 and a current of a constant-current source 19 are supplied to a feedback circuit 20 having a feedback loop, and this feedback loop is turned on and off by a control signal from a controlling circuit 29. When the feedback loop is turned off, a constant resistance feed by which a feed resistance of DC feeding circuits 14, 15 becomes constant is obtained, and in case the feedback loop is turned on, in an area in which a call current is small, a constant voltage feed by which voltage between the terminals 12, 13 becomes constant is obtained.
摘要翻译：目的：即使在呼叫电流小的区域的情况下也能稳定地提供呼叫电流，并且通过转换到IC来使设备小型化，通过接通和关闭用于比较恒定电流的反馈回路，电流和检测电流，由控制信号。构成：一对检测电路16,17将电阻23,24和电流镜电路25,26之间的连接端子12,13之间的每个电压转换成用户电路和直流电源22，并提供转换的电流对于加法电路18，另外将加法电路18的输出电流和恒流源19的电流提供给具有反馈回路的反馈电路20，并且该反馈回路由控制信号导通和关断当控制电路29断开时，获得DC供电电路14,15的馈电电阻变为恒定的恒定电阻馈电，并且在反馈回路接通的情况下，在其中通话电流小，可以获得端子12,13之间的电压恒定的恒定电压馈送。

17. 发明专利

JPS60180307A PROGRAMMABLE WAVEFORM GENERATING CIRCUIT 失效
公开(公告)号：JPS60180307A
公开(公告)日：1985-09-14
申请号：JP3674584
申请日：1984-02-28
申请人： FUJITSU LTD
发明人： HASEGAWA KENZOU
IPC分类号： H03B28/00 , H03K4/00 , H03K4/501
摘要： PURPOSE:To measure simply a waveform response of an electronic circuit by connecting selectively and programmably plural power supplies, resistive elements and capacitive elements with switches to generate an optional waveform through the charge/discharge of the capacitive elements. CONSTITUTION:The circuit consists of plural constant voltage sources V1-Vn, capacitors C1-Cn, resistors R1-Rn, switches SV1-SVn, SC1-SCn, SR1-SRn, an operation control circuit CONT and a memory M. When only the SVn, SCn, and SRn are closed, a loop comprising the Vn, Rn and Cn is formed, and an terminal voltage of the Cn at (t) sec after the loop circuit is formed, that is, an output voltage Vout is changed optionally by changing the Vn, Rn and Cn. A complicated waveform is an assembly of voltage changes at each unit time DELTAT, parameters T, DELTAT, E1...En deciding the output waveform are stored in the memory M, the CONT calulates the selection of the Vn, Rn and Cn at each unit time and the switches SVn, SCn and SRn are selected based on the result of calculation and turned on for the DELTAT, then the complicated waveform is realized.

18. 发明专利

JPS57193161A OPTICAL TELEPHONE SET 失效
公开(公告)号：JPS57193161A
公开(公告)日：1982-11-27
申请号：JP7764481
申请日：1981-05-22
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , HASEGAWA KENZOU
IPC分类号： H04B10/00 , H04B10/25 , H04M1/00
摘要： PURPOSE:To realize an economical optical telephone set, by connecting an optical telephone set to an exchanger with one optical fiber cable and using the telephone set in time division for transmission and reception in synchronizing with an optical signal transmitted from the exchanger. CONSTITUTION:A signal format of an optical signal OPD transmitted in an optical fiber cable OF consists of frames F repeated in the period of 125 microseconds and the frames F are divided into a reception time section RF and a transmission time section SF. An exchanger transmits a reception signal RD to an optical telephone set OT' are converting the signal into the optical signal OPD. The OT' receives the optical signal OPD from a slit SL provided to the cable OF and transmits the reception signal RD with a reception selecting signal RS. On the other hand, a tranmission code SP of the SF is formed with a voice inputted to a handset M and transmitted after being converted into the signal OPD. Thus, the optical telephone set OT' uses the cable OF in time division for communication.

19. 发明专利

JPS55150620A ELECTRIC POWER SUPPLY SYSTEM 失效
公开(公告)号：JPS55150620A
公开(公告)日：1980-11-22
申请号：JP5829379
申请日：1979-05-12
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , NAITOU WATARU , HASEGAWA KENZOU
IPC分类号： H02J1/00 , H03K17/687 , H04Q1/28
摘要： PURPOSE:To reduce power consumption in the operation holding time of a load circuit, by controlling charging and discharging of the capacitor, which is connected between the electronic switching element below and the earth, by the electronic switching element connected between a load circuit, where semiconductor elements are main components, and the power source. CONSTITUTION:When load circuit LDC operates for a prescribed time to become the holding state, control signal R is applied to terminal R to stop immediately the oscillation operation of oscillating circuit OSC through connection line INH. Since signal R is applied to transistor Q1 also through capacitor C2 to make transistor Q1 conductive, electric charge of capacitor C0 is discharged immediately through diode D3 transistor Q1 resistance R2, and transistor Q0 becomes the cut-off state because of no pulse output from circuit OSC, and this state continues until control signal S for operation start is applied to terminal S. During this period, electric power supply to circuit LDC is cut off, so that power consumption can be reduced.

20. 发明专利

JPS55124385A ONNLINE OPERATION TEST SYSTEM 失效
公开(公告)号：JPS55124385A
公开(公告)日：1980-09-25
申请号：JP3129179
申请日：1979-03-17
申请人： FUJITSU LTD
发明人： NAITOU WATARU , YOSHINO HARUYUKI , HASEGAWA KENZOU
IPC分类号： G06F11/22 , H04M3/08
摘要： PURPOSE:To secure the definite indication for the fault occurrence area by counting the signals of the fixed length included within the fixed time based on the output of the fall edge detection circuit plus the output of several interval timers. CONSTITUTION:For the test to detect the faulty area of the system under the on- line operation, rise edge detection circuit 6 detects the rise time of the signal extracted out of the system under the on-line operation. Thus the different time to be started are counted by timing circuits 8-1-8-n. On the other hand, fall edge detection circuit 7 detects the fall time of the signal extracted and then gives counting 10-1-10-n to the signals of the fixed length included within the fixed time via the output of circuit 7 plus circuits 8-1-8-n. In this way, the on-line transmission state is decided immediately through the comparison with the original signal, and then the faulty area can be indicated definitely.

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