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21. 发明专利

JPH02224441A ROUTING SWITCH CONTROL DEVICE 失效
公开(公告)号：JPH02224441A
公开(公告)日：1990-09-06
申请号：JP4324189
申请日：1989-02-27
申请人： TOSHIBA CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： HIRANO YOSHITAKA , INABA AKIRA
IPC分类号： H04L13/08 , H04L12/54 , H04L12/58 , H04L12/931
摘要： PURPOSE:To improve execution speed by providing a circuit which abandons burst data and releases a used buffer number separately from the transmission/ reception circuit of normal burst data. CONSTITUTION:At the time of abandoning the received burst data, the contents of registers 204-1 to 204-n are transferred to a queue 215 without regarding to routing information. The buffer number and the linkage information of a subsequent burst are read out from a linkage memory 206-2 for exclusively burst abandonment, and are written in the register 219 and a linkage information bit 220. A linkage detecting part 121 switches a selector 217 to a register 219 side when the subsequent burst exists. Since the linkage memory 206-2 for exclusively abandonment operates independently of the linkage memory 206-1, it never interrupts the transmission of the burst data during abandonment operation.

22. 发明专利

JPH01157148A INPUT TRAFFIC CONTROL SYSTEM 失效
公开(公告)号：JPH01157148A
公开(公告)日：1989-06-20
申请号：JP31561987
申请日：1987-12-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIRANO YOSHITAKA , WATABE NAOYA , HINO SHIGEKI , ONISHI KOICHI
IPC分类号： H04L12/813 , H04L12/823 , H04L12/947
摘要： PURPOSE:To improve the transfer efficiency of a network by setting a signal representing whether or not a value in a header part exceeds a normal value on an input traffic control part. CONSTITUTION:At the time of connecting a call, the normal value which becomes the reference of input traffic is set at a normal value holding part 11. An input traffic measuring part 10 measures the input quantity of a packet arriving from a subscriber 14 for the call in communication. A control part 12 compares a measure value with the value in the holding part 11 set at the time of connecting the call, and when the value exceeds the normal value, a normal value excess signal is sent to a delivery processing part 13. The processing part 13 changes a class display field in a packet header to 1 when the normal value excess signal is sent, and displays the fact that the packet is the one whose value exceeds the normal value. And as far as a relay network can perform transfer, the transfer of the packet whose value exceeds the normal value is performed.

23. 发明专利

JPH01144836A PACKET BUFFER CIRCUIT 失效
公开(公告)号：JPH01144836A
公开(公告)日：1989-06-07
申请号：JP30155587
申请日：1987-12-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATABE NAOYA , HIRANO YOSHITAKA , HINO SHIGEKI
摘要： PURPOSE:To transmit only important packets during the communication by abandoning a specific packet which is the object of limitation at the point of time of inputting or outputting in the event of congestion in a packet buffer. CONSTITUTION:An input packet gate part 23, when not instructed to skip, transmits all the packets to the packet buffer part 42 via a connection line 21. On the other hand, when receiving a packet slip instruction signal, the part 23 abandons a packet which is about to pass at the time of said inputting, and does not execute the packet transmission to the buffer part 42, i.e., a special packet is abandoned at the time of inputting to the packet buffer. As a result, only the important packets during communication can be transmitted.

24. 发明专利

JPS6422141A TRANSMISSION CONTROL SYSTEM 失效
公开(公告)号：JPS6422141A
公开(公告)日：1989-01-25
申请号：JP17835587
申请日：1987-07-17
申请人： NIPPON TELEGRAPH & TELEPHONE , TOSHIBA CORP
发明人： SAKAKIBARA SO , KATAOKA HIDEKI , TAKAHASHI TATSURO , HIRANO YOSHITAKA , KIKUCHI SHIRO , ISHIKAWA MOTOYUKI , INABA AKIRA , ANDO ARATA
摘要： PURPOSE:To prevent the inversion of a writing address and a reading address from being generated by supervising the writing condition and reading condition of a buffer memory and controlling the transfer speed of an input/output in accordance with the accumulating condition of a packet. CONSTITUTION:At a supervising circuit 201, the reading page and address of output interface circuits 1111-111N to read and transfer the packet while it is presently written in a buffer memory 108 are compared with the writing page and address by comparators 203 and 204. When both pages are coincident and the writing address precedes the reading address, the writing is prohibited. Further, the writing page and address of input interface circuits 1101-110N where the data of the packet during the present reading come in are compared with the reading page and address with comparators 213 and 214, and when both pages are coincident and the reading address precedes, the reading is prohibited.

25. 发明专利

JPS62114356A TRANSFER SYSTEM FOR DIVIDED INTERRUPTION PACKET 失效
公开(公告)号：JPS62114356A
公开(公告)日：1987-05-26
申请号：JP25432385
申请日：1985-11-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIRANO YOSHITAKA , WATABE NAOYA , KOBAYASHI MASAYUKI
摘要： PURPOSE:To shorten the transmission delay of packets having a high degree of urgency by dividing a transmitted packet and interrupting it to transmit a packet having a higher priority level when transmission of the packet having a higher priority level is requested. CONSTITUTION:Each packet is provided with an interruption display field INT and points 1-3, where interruption is permitted, in respective division units (b) of an information field. Packets from a transmission line 40 are subjected to flag detection and zero deletion by a processing part 41, and the priority levels of n packets are decided by a processing part 42 to send queues classified by priority. A control part 45 sends a transmission permitting signal to the queue having the highest priority level, and a corresponding packets are sent to a processing part 44, and the number of transmission bits is sent to an interruption processing part 46. If transmission from the queue having a higher priority level is requested while the packet is transmitted, the control part 45 issues an interruption request to the processing part 46. Then, the processing part 44 stops transmission of the packet and makes an already transmitted part independent at a division unit point and adds the number of the interruption permission point to the remainder bits as a header to add them to the beginning of the source queue and transmits them after the end of interrupt.

26. 发明专利

JP2001156796A SIGNAL LINK CONNECTION METHOD BETWEEN SWITCH NODES 失效
公开(公告)号：JP2001156796A
公开(公告)日：2001-06-08
申请号：JP33744899
申请日：1999-11-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUDA TAKAO , YASUDA SHINJI , HIRANO YOSHITAKA
IPC分类号： H04M7/06 , H04L12/28 , H04L12/70 , H04L12/713 , H04L12/775
摘要： PROBLEM TO BE SOLVED: To provide a signal link connection method between switch nodes by which a network band required for signal link connection between communication controllers can be reduced. SOLUTION: The two sets of the identical communication controllers are placed in the switch node, the one controller is used as an active controller and the other is used as standby controller, and the active controller is used to make signal line connection with a communication controller of other switch node.

27. 发明专利

JPH09135269A RECEPTION PACKET INFORMATION MANAGEMENT SYSTEM 失效
公开(公告)号：JPH09135269A
公开(公告)日：1997-05-20
申请号：JP28961795
申请日：1995-11-08
申请人： NIPPON TELEGRAPH & TELEPHONE , NEC CORP
发明人： MITO MICHIHARU , HIRANO YOSHITAKA , MASUDA TAKAFUMI
IPC分类号： H04L13/08 , H04L12/70 , H04L12/801 , H04L12/911 , H04L29/10 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To make efficient management of received packets by storing the received packets to chain-connection buffer memories, reading their trailer and informing presence of information part in a final buffer to a host layer. SOLUTION: A buffer management section 41 receives a packet from a line 9 and stores it to a chain-connection buffer memory 1 and the number of buffers and their addresses are informed. simultaneously a reception packet length counter 8 informs a length of a reception packet to a protocol processing section 3. An address storing a trailer is calculated and a trailer read section 2 reads the trailer. Then the packet type and length are obtained, subjected to protocol processing and the address and the number of buffers are given to a report generating section 6. Furthermore, a data presence discrimination section 5 discriminates the presence of a final buffer information part and the report is given to a host interface section 7. Thus, the presence of a final buffer information part is reported and the reception packets are managed efficiently.

28. 发明专利

JPH09116559A ERROR RECOVERY DEVICE 失效
公开(公告)号：JPH09116559A
公开(公告)日：1997-05-02
申请号：JP27404295
申请日：1995-10-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAWASHIMA MASAHISA , HIRANO YOSHITAKA
IPC分类号： H04L1/00 , H04L1/16 , H04L12/18 , H04L12/28 , H04Q3/00
摘要： PROBLEM TO BE SOLVED: To reduce number of packets to be sent again for error recovery even when a message is sent by providing a means or the like that generates and send an error correction parity packet from an original information packet including original information generated in a terminal equipment to the terminal equipment (route). SOLUTION: The route has a parity generating section 3 generating and sending a parity packet from an original information packet including original information generated in the route, a header describing section 5 describing an original information packet number to a header area of a packet, a maximum value calculation section 7 sending parity packets of a maximum number of a requested parity number included in a parity request notice received from a leaf, a re-transmission packet decision section 8 deciding a re-transmission packet list. Then the route generates a parity packet from the original information packet and sends it to a reception terminal equipment (leaf), the leaf decodes the original information packet and the end of reception is informed to the route.

29. 发明专利

JP2560270B2 失效
公开(公告)号：JP2560270B2
公开(公告)日：1996-12-04
申请号：JP12078991
申请日：1991-05-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MYAYASU KENJI , SHIOMOTO KOHEI , HIRANO YOSHITAKA
IPC分类号： H04L12/28

30. 发明专利

JPH08288961A DEVICE AND METHOD FOR DECIDING STORED INFORMATION TRANSFER RATE 失效
公开(公告)号：JPH08288961A
公开(公告)日：1996-11-01
申请号：JP9044795
申请日：1995-04-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAWASHIMA MASAHISA , HIRANO YOSHITAKA
IPC分类号： H04L29/08 , H04L12/28 , H04L12/54 , H04L12/58 , H04L12/911 , H04L12/951
摘要： PURPOSE: To realize the fixed rate information transfer system in which occurrence of rejected reception of the service is reduced more than that of a conventional system when information to be transferred has already been stored. CONSTITUTION: An information transfer network 12 (reception control section) decides an information transfer rate at the start of information transfer. A transmission terminal equipment 11 applies total amount of information to be stored when making a channel request and applies a required rate as a minimum transfer rate when the transfer of information is required at a rate over the required rate. In the case of deciding the information transfer rate, the information transfer network 12 calculates an end schedule time of information transfer started already to obtain a timewise fluctuation of an idle band of a transmission line and to calculate a service reception reject ratio for a time just after the transfer start till the lapse of a prescribed time thereby deciding the information transfer rate so as to minimize the service reception reject rate.

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