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1. 发明专利

JPH03117054A PACKET EXCHANGE DEVICE 失效
公开(公告)号：JPH03117054A
公开(公告)日：1991-05-17
申请号：JP25180589
申请日：1989-09-29
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04L12/70 , H04L12/951
摘要： PURPOSE:To connect an ATM exchange to an existent line exchange by connecting the ATM exchange, analog telephone set and line exchange by a terminal adapter for analog telephone set and an adapter for line exchange. CONSTITUTION:An ATM exchange 31 to exchange and connect packet signals according to the label information, a terminal adapter 34 for analog telephone set provided with first state code means 39 to house an analog telephone set 32, to write a state code corresponding to this intrinsic state of the analog telephone set 32 and to supply the code to the ATM exchange 31, and first state identification control means 38 to identify the state code to be supplied from the ATM exchange 31, and to control the state of the analog telephone set 32 corresponding to the state are provided. Further, an adapter 41 for line exchange is provided with second state identification control means 46 to be connected with a subscriber circuit 44 of a line exchange 33 and to control the state of the subscriber circuit 44, and second state code means 47. Thus, without changing the analog telephone set 32 and the other line exchange 33, the ATM exchange 31 can be introduced.

2. 发明专利

JPH02174338A PACKET PROCESSING VOICE TRANSMISSION CIRCUIT 失效
公开(公告)号：JPH02174338A
公开(公告)日：1990-07-05
申请号：JP32774688
申请日：1988-12-27
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04B14/04 , H04B1/66 , H04L12/00 , H04Q11/04
摘要： PURPOSE:To transmit other data for a time when a voice signal level disabled to be listened to by human ears is generated by deciding whether or not a digital voice signal subjected to packet processing is to be listened to and outputting the digital voice signal when the signal can be listened. CONSTITUTION:A voice signal output enable circuit 17 monitors the output of a voice level deciding means 14 at every period of 125mus outputs logic 0 when the output of logic 1 of the voice level deciding means 14 is less than (m) times or below consecutively and outputs logic 1 when the output of logic 1 exceeds (m) times consecutively. Then an output gate circuit 18 uses the output of a voice output permission circuit 17 to output the output of a packet processing voice circuit 13 to an output transmission line when the output is logic 1 and to prohibit the output of the packet processing voice circuit 13 to the output transmission line when logic 0. Thus, only the voice signal level capable of discrimination actually by human ears is processed as a packet and communicated, then it is possible to send other communication through the transmission line while the voice signal level incapable of listening by human ears takes place.

3. 发明专利

JPH02174337A VOICE SIGNAL PACKET PROCESSING CIRCUIT 失效
公开(公告)号：JPH02174337A
公开(公告)日：1990-07-05
申请号：JP32774588
申请日：1988-12-27
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04B14/04 , H04L12/00 , H04M3/00 , H04Q11/04
摘要： PURPOSE:To attain a voice signal and a data signal with the same packet exchange system by using an A/D converter circuit and converting an analog voice signal into a digital voice signal, designating the packet to an optical packet length at a readout period decided with a readout clock generating circuit and processing the signal into a packet and outputting the packet to a transmission line. CONSTITUTION:A memory circuit 14, a write address counter circuit 13, a readout timing generating circuit 15 and an output control circuit 17 are added to a conventional A/D converter circuit. Thus, the length of the packet is designated to an optional value. Moreover, the voice signal packet processing is used for the telephone exchange with the line exchange system to apply the packet exchange system applied to the conventional data communication also for the communication of the voice signal. Thus, the same communication means is applied for the voice signal communication and the data signal communication.

4. 发明专利

JPS6481489A VARIABLE FEEDING MODE SUBSCRIBER CIRCUIT 失效
公开(公告)号：JPS6481489A
公开(公告)日：1989-03-27
申请号：JP23950687
申请日：1987-09-22
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04Q3/42
摘要： PURPOSE:To increase the number of subscriber circuits to be mounted by switching the feeding mode into the constant current feeding mode of a low current value so as to prevent the temperature raise in an enclosure. CONSTITUTION:A constant resistor control circuit 210 and a constant current source 211 are selected by switching elements 212, 213 by an output of an n/m deciding circuit. The output current of a current sum circuit 214 controls an operational amplifier controlling the base current of a transistor of power supplying circuits 215, 216 suppling talking current to subscriber lines A, B. By such a constitution, the talking current supply circuit 21 supplies both the operating modes of the constant voltage constant resistor power supplying mode and the constant current supplying mode. Thus, the circuit can also cope with the increased number of subscriber circuits.

5. 发明专利

JPH08323893A MAIL PRODUCING DEVICE 失效
公开(公告)号：JPH08323893A
公开(公告)日：1996-12-10
申请号：JP9467595
申请日：1995-04-20
申请人： ANRITSU CORP , NEC CORP
发明人： MIURA KOSUKE , TAKAHARA HIROKI , AKIBA KENICHI , ASAKURA JUNJI
IPC分类号： B65B43/14 , B31B19/02 , B31B19/26 , B31B19/60
摘要： PURPOSE: To reduce an installation space and facilitate arrangement without selecting the place of installation. CONSTITUTION: An envelope transfer passage 16, slanted with an ascending slope from a front surface la toward a rear surface 1b, is formed in a casing 1. A printing paper transfer passage 74, extended into up-and-down direction of the casing 1, is formed so as to be joined above the envelope, transfer passage 16. A take-in port, taking a printing paper thereinto, is formed below a printing paper transfer passage 74. A post card transfer passage 80 is formed along a partitioning plate so as to be joined with the take-in port 82, employed in common, at a discharging port 24 below the envelope transfer passage 16. In the upper part of the partitioning plate in the casing 1, these transfer passages 16, 74, an envelope rerealing-out mechanism 8, an envelope transfer mechanism 30, a flap closing mechanism 35, a paper transfer mechanism 65, a printing matter transfer mechanism 90, fore and aft v-groove mechanism 91, up-and-down V-groove mechanism 105, and an address printing unit 115 are arranged. In the lower half of the casing 1 from the boundary of the partitioning plate, a receiving unit 120, a control circuit unit 121 and a printing unit 122 are arranged.

6. 发明专利

JPH03117049A PACKET EXCHANGE SYSTEM 失效
公开(公告)号：JPH03117049A
公开(公告)日：1991-05-17
申请号：JP25180289
申请日：1989-09-29
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04L12/24 , H04L12/26 , H04L12/28 , H04L12/70
摘要： PURPOSE:To confirm the normality of a connecting route by providing a means in a packet exchange on a call originating side so as to insert the same call identification information as a packet signal for user information and a packet signal for network use information equipped with information for distinguishment to a transmission line, and a means taking the signals out to a packet exchange on a call incoming side. CONSTITUTION:A call originating side packet exchange 31 equipped with a physical address adding means 37, call originating side exchange connecting means 33 and network use information packet signal inserting means 43, a call incoming side packet exchange 32 equipped with a call incoming side exchange connecting means 52 and a network use information packet signal taking-out means 54 are provided. The packet signal for network use information equipped with the same call identification information as the packet signal for user information and the information showing not to be the packet signal for user information is transmitted together with the packet signal for user information and this is taken out in the call incoming side packet exchange 32. Thus, it can be confirmed that the packet signal is normally transmitted.

7. 发明专利

JPH0364141A OUTGOING LINE BUFFER PRIORITY CONTROL SYSTEM FOR PACKET SWITCHBOARD 失效
公开(公告)号：JPH0364141A
公开(公告)日：1991-03-19
申请号：JP20061289
申请日：1989-08-01
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04L12/865 , H04L12/931
摘要： PURPOSE:To attain priority control as a hardware switch with a small memory quantity by providing the buffer memory of a fixed length packet signal corresponding to the outgoing line of the hardware switch. CONSTITUTION:The packet signal 1 of a fixed length has a call identification number and priority display as label information. A hardware switch 2 having nXn incoming lines from (IN-11)-(1n) to (IN-n1)-(nn) is of multi-stage switch constitution constituting unit switches having nXm (n

8. 发明专利

JPH02198245A SELF ROUTING CHANNEL FAULT DETECTION CIRCUIT 失效
公开(公告)号：JPH02198245A
公开(公告)日：1990-08-06
申请号：JP1622689
申请日：1989-01-27
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04Q1/24 , H04L12/24 , H04L12/26 , H04L12/28 , H04Q3/00
摘要： PURPOSE:To attain small scale of the circuit through the use of circuits used in common by arranging a selector circuit corresponding to each incoming transmission line in the exchange system using a self routing channel and using the other circuits in common. CONSTITUTION:In the case of detecting the presence of a fault through the diagnosis of a channel, test drive information 14 is sent to a self-routing channel fault detection,circuit externally. A 1st AND circuit 15 receives the information 14 and an output 13 of an idle packet detection circuit 12 and brings the output 18 to an H level only when an idle packet is detected. A counter circuit 19 counts up number of idle packets when the information 14 is sent as a result. Count information 23 outputted from the circuit 19 acts like header information designating an outgoing line of a self-routing channel 33. Test pattern information 25 outputted from a test pattern generating circuit 24 is used for an area of channel information of a fixed length packet.

9. 发明专利

JPS6337746A CIRCUIT FOR TELEPHONE SET WITH REDIALING FUNCTION 失效
公开(公告)号：JPS6337746A
公开(公告)日：1988-02-18
申请号：JP18010586
申请日：1986-08-01
申请人： NEC CORP
发明人： ASAKURA JUNJI
IPC分类号： H04M1/27 , H04M1/2745
摘要： PURPOSE:To automate redialing operation during the busy state of the opposite subscriber by restarting a counter circuit with the output of a busy-back tone detecting circuit and resending a dial signal to the opposite subscriber whose telephone number is stored in a memory. CONSTITUTION:One address of the memory-1 is specified according to the OR condition between the address selecting circuit 2 of the readable/writable memory-1 and the counter circuit 3 which generates an output pulse at every constant period, and the telephone number stored therein is outputted to an output terminal. Then, a dial signal sending circuit 5 sends out the dial signal corresponding to the telephone number of the opposite subscriber to two subscriber lines A and B according to the output of the memory-1. Then, the busy-back tone detecting circuit 6 detects a busy-back tone transferred from a telephone exchange when the opposite subscriber to be connected is busy, and reactuates the counter circuit 3 with the output, thereby performing redialing operation a constant time later.

10. 发明专利

JPH0364143A CALL CONNECTION SYSTEM FOR PACKET SWITCHBOARD 失效
公开(公告)号：JPH0364143A
公开(公告)日：1991-03-19
申请号：JP20061189
申请日：1989-08-01
申请人： NEC CORP
发明人： ASAKURA JUNJI , TAKEUCHI WATARU
IPC分类号： H04L12/939 , H04L12/947
摘要： PURPOSE:To attain call reception control independently of the state of connection of other call classes whichever fixed length packet signals of call classes A and B exist in mixture by devising a system such that a switch A applies exchange connection to the fixed length packet signal of a call of a call class A and a switch A applies exchange connection to the fixed length packet signal of a call of a call class B. CONSTITUTION:A call class information area is provided in the label of a fixed length packet signal 1 and a sharing switch 21 connecting fixed length packet information depending on call class information is provided to share the fixed length packet signal 1 to a switch A 22 connecting a call class A and a switch B23 connecting a call class B. The switch A22 connects only the fixed length packet signal of a packet call whose call class is A and the switch B23 connects only a fixed length packet signal of a packet call whose call class is B. In which way the fixed length packet signals whose call classes A and B exist in mixture, the call reception control is attained regardless of the state of the connection of other call classes in the call reception control of respective calls.

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