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1. 发明专利

JPS643107B2 失效
公开(公告)号：JPS643107B2
公开(公告)日：1989-01-19
申请号：JP21659483
申请日：1983-11-17
申请人： FUJITSU LTD
发明人： WARABINE KAZUYUKI , KOIKE JUNICHI , IITAKA EIJI
IPC分类号： H04M3/58

2. 发明专利

JPH08331147A SPEED CONVERTER OF DATA TRANSMISSION NETWORK 失效
公开(公告)号：JPH08331147A
公开(公告)日：1996-12-13
申请号：JP13790795
申请日：1995-06-05
申请人： FUJITSU LTD
发明人： MANSHIYOU MASAKI , TSURUSAKI MASARU , EBARA TETSUO , NAKANO TADASHI , TAKAOKA HIDEFUMI , FUKUDA KEIJI , NIHEI MASAHIRO , IITAKA EIJI
IPC分类号： H04L29/14 , H04L7/00 , H04L12/28 , H04Q3/00
摘要： PURPOSE: To obtain a speed converter for a data transmission network, which is capable of efficiently and surely interfacing the side of an ATM user network and the side of a high speed digital network. CONSTITUTION: This device is composed of at least one of an ATM user network interface part 10 having a terminated ATM user network interface, and a high speed digital interface part 11 having a terminated high speed digital network, and further of a speed conversion part 12 having a function of performing the speed conversion of the ATM cell data from the ATM user network interface part 10 into the cell data to the high speed digital interface part 11 and a function of performing the speed conversion of the cell data from the high speed digital interface part 11 into the cell data to the ATM user network interface part 10 and having a buffer 12a inside, and a test dividing part 13 which is connected between the speed conversion part 12 and the high speed digital interface part 11 and performs the loopback in the direction of the high speed data interface part 11 and in the direction of the ATM user network interface part 10.

3. 发明专利

JPH02206950A LINE HOLDING STATE AUTOMATIC RELEASE METHOD IN TELEPHONE EXCHANGE 失效
公开(公告)号：JPH02206950A
公开(公告)日：1990-08-16
申请号：JP2813489
申请日：1989-02-07
申请人： FUJITSU LTD
发明人： IITAKA EIJI , NISHIMURA SHINOBU
IPC分类号： H04M3/58 , H04M1/72 , H04M3/16 , H04M13/00
摘要： PURPOSE:To eliminate the need for hooking operation and to avoid misoperation of connecting a telephone set having a line holding state automatic release function to an extension of a telephone exchange. CONSTITUTION:Plural extension telephone sets 21, 22,... are provided with a line holding state automatic release function, which detects it in the ease of branch connection so as to release the holding state automatically. It is detected by a loop detection circuit 31 that the holding state of the extension telephone set 21 brought into the holding state because of the connecting state to a telephone line 10 is automatically released at the extension telephone set due to the branch connection change and the external line path of the extension telephone sets 21 whose holding state is automatically released is interrupted through the detection under the control or a control circuit 8. Thus, sure transfer of communication is attained without hooking and worry over misoperation is avoided.

4. 发明专利

JPS62123891A CONNECTION SYSTEM BETWEEN KEY TELEPHONE SYSTEMS 失效
公开(公告)号：JPS62123891A
公开(公告)日：1987-06-05
申请号：JP26451085
申请日：1985-11-25
申请人： FUJITSU LTD
发明人： KOIKE JUNICHI , WARABINE KAZUYUKI , IITAKA EIJI
IPC分类号： H04Q3/58
摘要： PURPOSE:To make mutual connection between key telephone equipment quickly and at low loss and to offer various connection service by connecting between channels and controlling equipments relating to mutual connection between plural key telephone systems. CONSTITUTION:In two sets of key telephone systems 1 and 2, the extension side terminal 13 of a channel switch 11 of the key telephone system 1 and the trunk line side terminal 22 of a channel switch 21 of the key telephone system 2 are connected by a connection line between equipments, and the control circuit 16 of the key telephone system 1 and the control circuit 26' of the key telephone system 2 are connected by a control information transfer line 7. As the connection line between systems 6' connects channel switches directly without passing through a trunk line circuit, extension circuit, etc., loss becomes low, and as the control information transfer line 7 transfers various information for transfer control quickly, connection between the two key telephone systems can be quickened and various service functions can be realized.

5. 发明专利

JPS60109364A INDIRECT CONNECTION SYSTEM OF EXCHANGE 失效
公开(公告)号：JPS60109364A
公开(公告)日：1985-06-14
申请号：JP21659483
申请日：1983-11-17
申请人： FUJITSU LTD
发明人： WARABINE KAZUYUKI , KOIKE JIYUNICHI , IITAKA EIJI
IPC分类号： H04M3/58
摘要： PURPOSE:To transfer a call to an outside line to an extension stored to another exchange connected by an exclusive line, by switching connection between the 1st and 2nd exchanges when the 2nd extension stored in the 2nd exchange gives an answer. CONSTITUTION:An extension A holds an incoming call given from a main wire L1 and then sends the call to an extension C via an exclusive line trunks LDT1, an exclusive line L3 and an exclusive line trunk LDT2. When the extension C answers a call, a changeover switch r2 within the trunk LTD2 is switched for connection as if a call were given to an exclusive line L2 from the extension C. At the side of an exchange EX1, a changeover switch r1 within the trunk LDT1 is switched after the answer of the C is confirmed by a central controller CC1'. At the same time, a channel between an extension store terminal (a) and an outside line store terminal (c) is opened. Then the connection is given to a channel between the terminal (a) and an extension store terminal (b), and the connection is switched as if a call arrived to the exclusive line L1 from the extension A.

6. 发明专利

JPH11112523A CIRCUIT EMULATION COMMUNICATION METHOD, ITS TRANSMISSION DEVICE AND RECEPTION DEVICE 失效
公开(公告)号：JPH11112523A
公开(公告)日：1999-04-23
申请号：JP27585697
申请日：1997-10-08
申请人： FUJITSU LTD
发明人： IITAKA EIJI
IPC分类号： H04L29/14 , H04L12/46 , H04L12/70 , H04L12/951 , H04Q11/04 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To effectively use a user data transmission band without executing charging for the notice of a line fault by analyzing user data, stopping an ATM cell making processing when a non-communication pattern is detected and generating the non-communication pattern when an ATM cell is not received through an ATM network and transmitting it to a non.ATM communication equipment or a non-ATM network. SOLUTION: All the data bits of the transmission fame of DS1, which is received, are analyzed in a data analysis part 2. When they are matched with the non-communication pattern, they are abolished by containing frame bits. The cell of the non-communication pattern is not made into the cell in a cellularizing part 3 and it is not transmitted from a cell transmission part 4. Relating to an opposite ATM communication equipment through the ATM network 12, the cell received in a cell reception part 5 is restored into the transmission frame of DS1 in a decellularizing part 6. When the transmission frame is abolished in the ATM communication equipment of a transmission side as the non-communication pattern, the transmission frame of DS1 cannot be restored in the decellularizing part 6.

7. 发明专利

JPS6377251A CALLING AMPLIFYING DEVICE 失效
公开(公告)号：JPS6377251A
公开(公告)日：1988-04-07
申请号：JP22088586
申请日：1986-09-20
申请人： FUJITSU LTD , HASEGAWA DENKI SEISAKUSHO
发明人： IITAKA EIJI , KOIKE JUNICHI , SUGIMOTO NORIYA
IPC分类号： H04M1/60 , H04M3/40
摘要： PURPOSE:To easily attain the amplification of a bidirectional calling signal by providing a circuit passing only a DC component, an AC amplifier and a changeover circuit switching the AC amplifier to be bypassed so as to connect it to a telephone line directly. CONSTITUTION:In turning off a switch 25, the output of an inverter 24 goes to an L level, a transistor (TR) 23 is turned on, since no current is conducted to a relay 22, contacts 141-144 ar in the state as shown in figure, and a telephone line and a telephone terminal are connected via a bypass circuit 15. In turning on the switch 25, the output of the inverter 24 goes to an H level, a TR 23 is turned on, a current is conducted to the relay 22 by a voltage +V, the contacts 141-144 are connected switchingly, and the telephone line and the telephone terminal equipment are connected via AC amplifiers 11, 12. Then the DC components such as a DC loop signal, a dial pulse signal and a call signal or the like are conducted through a choke coil 3, and are sent as they are, and the bidirectional calling signal is amplified and outputted respectively.

8. 发明专利

JPS60223284A PREVENTING CIRCUIT FOR LEAKAGE OF AUDIBLE SOUND 失效
公开(公告)号：JPS60223284A
公开(公告)日：1985-11-07
申请号：JP6216484
申请日：1984-03-31
申请人： FUJITSU LTD , HASEGAWA DENKI SEISAKUSHO
发明人： IITAKA EIJI , KUBO MASAHIDE , TAKANO HISAHITO
IPC分类号： H04Q3/58 , H04M1/72 , H04M9/00 , H04M9/08 , H04M19/04
摘要： PURPOSE:To transmit the audible sounds through a speaker and also to prevent leakage of these sounds to a subscriber at the remote side, by connecting a circuit having a low input Z and a high output Z between call lines and a speaker amplifier and connecting the output of an audible sound generating circuit between the amplifier and said circuit connected between the call lines and the amplifier. CONSTITUTION:A transistor circuit 15 having a low input impedance and a high output impedance is connected between call lines L1 and L2 and an amplifier 6 which drives a speaker 7. Then an output terminal of an audible sound generating circuit 18 is connected between the circuit 15 and the amplifier 6. Therefore an audible sound given from the circuit 8 has a low impedance at the side of the amplifier 6 and a high impedance at the side of the circuit 15. Thus the sound is transmitted only to the amplifier 6, and the leakage of the audible sounds can be avoided by the circuit 15 to a subscriber at the remote side.

9. 发明专利

JPS59110258A Connecting method of cassette type keyboard 失效
标题翻译： CASSETTE类型键盘的连接方法
公开(公告)号：JPS59110258A
公开(公告)日：1984-06-26
申请号：JP22069082
申请日：1982-12-16
申请人： Fujitsu Ltd
发明人： KASUGA TATSUO , IITAKA EIJI , YAMAUCHI MASAAKI , SUZUKI KATSUO
IPC分类号： G06F3/02 , H04M1/27 , H04M1/2745 , H04M1/275
CPC分类号： H04M1/275
摘要： PURPOSE:To reduce an automatic dialing device in size and to facilitate operation by making an optical coupling connection between an automatic dialing operation part and the automatic dialing device. CONSTITUTION:A light emitting element 11 is situated on the bottom surface of recessed part 5 of a housing 2 to convert electric signals of operation keys 7 and dial keys 6 into optical signals. Keyboards 91-93 when inserting into the recessed part 5 are equipped with a photodetecting element 12 opposite to the element 11, and photodetects and converts the optical signal of the element 11 into an electric signal. A light emitting element 14 is situated on the reverse surfaces of the keyboards 91-93 to convert the electric signal of a telephone number transmitted by the operation of an automatic dialing transmission key 10 into an optical signal, which is projected on a photodetecting element 13 at the facing recessed part 5 and converted into an electric signal. Thus, the automatic dialing device body 1 is connected to the keyboards 91-93 by the transmission and reception of the optical signal between light emitting elements and photodetecting elements in pairs, so there is no defective contacting, the device 1 is reduced in size, and the keyboards 91-93 are handled easily.
摘要翻译：目的：通过自动拨号操作部分和自动拨号设备之间的光耦合连接，减小自动拨号设备的大小，方便操作。构成：发光元件11位于壳体2的凹部5的底面上，将操作键7和拨号键6的电信号变换为光信号。插入凹部5时的键盘91-93配备有与元件11相对的光电检测元件12，并且将元件11的光信号光电转换成电信号。发光元件14位于键盘91-93的相反表面上，以将通过自动拨号传输键10的操作发送的电话号码的电信号转换成投射在光电检测元件13上的光信号在相对的凹部5处，并转换为电信号。因此，自动拨号装置主体1通过在发光元件和受光元件之间成对发送和接收光信号而连接到键盘91-93，因此没有接触不良，装置1的尺寸减小，键盘91-93易于处理。

10. 发明专利

JPH03270547A AUTOMATIC ANSWERING TELEPHONE SET 失效
公开(公告)号：JPH03270547A
公开(公告)日：1991-12-02
申请号：JP7122990
申请日：1990-03-20
申请人： FUJITSU LTD
发明人： HIROSE NORIMASA , IITAKA EIJI , NISHIMURA SHINOBU
IPC分类号： H04N1/32 , H04M1/64 , H04M11/00
摘要： PURPOSE:To attain automatic changeover even for an incoming call from a facsimile equipment having no transmission function of a CNG signal by implementing the connection changeover of a receiver side facsimile equipment automatically in response to an identification signal (CNG signal) detected via a channel formed by automatic reply of an automatic answering telephone set. CONSTITUTION:A channel is formed when an automatic answering telephone set replies a detected incoming call automatically. When a FAX automatic changeover switch 34 is set to the automatic changeover, a control section 32 controls an OGM recording and reproducing circuit 29 such that the circuit 29 waits for 6sec and sends an OGM signal to the channel. Since the time 6sec is a complete silence state different from the interblock period provided to the OGM signal, the sender side facsimile equipment surely detects a CNG signal. That is, the subsequent changeover to the facsimile equipment is ensured.

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