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1. 发明专利

JP2002084313A ROUTER FOR COMMUNICATION NETWORK 失效
公开(公告)号：JP2002084313A
公开(公告)日：2002-03-22
申请号：JP2000269510
申请日：2000-09-06
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： OSAKI ATSUSHI , SHIOMOTO KOHEI , OMOTANI MASAAKI , SHIMIZU SHIGEKI
IPC分类号： H04L12/28 , H04L12/751 , H04L12/775 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a router where routing function for forming a new routing table is not interrupted, when a working system and a stand-by system are switched over. SOLUTION: This router 10 is provided with a pair of routing mechanism 16a and routing mechanism 16b, which constitute the working system and the stand-by system. In order to use a routing table 22 of the working system routing mechanism as the routing table 22 of the stand-by system routing mechanism, this information is transferred.

2. 发明专利

JPH11284638A COMMUNICATION SYSTEM 失效
公开(公告)号：JPH11284638A
公开(公告)日：1999-10-15
申请号：JP10336598
申请日：1998-03-31
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , FUJITSU LTD
发明人： OKUNO MIKIFUMI , KASAMURA KENJI , DOI YUKIHIRO , OMOTANI MASAAKI , ICHIMURA KAZUYUKI , YAGIHASHI AKIHIRO , KOBAYASHI TAKAFUMI , TOMONAGA HIROSHI
IPC分类号： H04L7/00 , H04L12/28 , H04Q3/00
摘要： PROBLEM TO BE SOLVED: To transmit and receive data without failure even if a local device system clock is not synchronized with an opposite-side system clock. SOLUTION: The reception data D1 and opposite-system clock C3 included in a signal S1 received from the opposite-side device are separated by a data/ clock separation part 17. The reception data D1 is temporarily stored in a reception cell elastic part 15 and read out by a local device system clock C2. The opposite-side system clock C3 is used for a synchronizing signal for transmitting the transmission data D2 stored temporarily in the transmission cell elastic part 14.

3. 发明专利

JP2000115273A DATA TRANSFER EQUIPMENT 失效
公开(公告)号：JP2000115273A
公开(公告)日：2000-04-21
申请号：JP27811198
申请日：1998-09-30
申请人： NEC CORP , NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD , OKI ELECTRIC IND CO LTD
发明人： YOKOUCHI HIDEAKI , MINAMIMURA KEIZO , GENDA KOICHI , OMOTANI MASAAKI , SUZUKI KAZUYUKI , MATSUO SATOSHI , UCHINO KENICHI
IPC分类号： G06F13/38 , G06F1/12 , H04L25/02 , H04L25/40 , H04L29/02
摘要： PROBLEM TO BE SOLVED: To reduce the number of terminals of an LSI or a printed board by making a clock signal and a synchronous signal of a control information signal common with a clock signal and a synchronous signal of a user information signal. SOLUTION: This data transfer equipment is provided with a cell data transmission processing part 20 on a master side to transmit and receive a user information signal, a cell data reception processing part 23 at the master side, a control bus transmission control part 22 on the master side to transmit and receive the control information signal and a control bus reception control part 28 at the master side. And the clock signal and the synchronizing signal of the control information signal are made common with the clock signal and the synchronizing signal of the user information signal. Namely, a cell transmission clock signal and a cell synchronizing signal are used as a clock signal for transmission of the control signal and a synchronizing signal for the control signal when the control bus signal is transmitted by the control bus transmission control part 22 on the master side. Therefore, the cell transmission clock signal and the cell synchronizing signal are supplied to the control bus transmission control part 22 at the master side as the control bus synchronizing signal 21 by the cell data transmission processing part 20 on the master side.

4. 发明专利

JP2000031971A LINE ADAPTOR 失效
公开(公告)号：JP2000031971A
公开(公告)日：2000-01-28
申请号：JP19289998
申请日：1998-07-08
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD
发明人： AMANO MITSUHARU , TOMONAGA HIROSHI , SUZUKI KAZUYUKI , MATSUO SATOSHI , OMOTANI MASAAKI , GENDA KOICHI , DOI YUKIHIRO , WATABE KAZUO , TSUCHIDA TOMOHIRO
IPC分类号： H04L1/22 , H04L12/28 , H04L12/70 , H04L12/713 , H04L12/775 , H04L12/935 , H04Q3/00
摘要： PROBLEM TO BE SOLVED: To prevent missing, duplication of cells and inversion of cell sequence in a switching state of a duplicate system in the case that the line adaptor provided to an ATM exchange, and composed of active/standby systems adds system identification information to a cell received by each system, writes the cell to a storage means, and reads the cell therefrom and outputs it. SOLUTION: The line adaptor 100 is provided with a read end detection means 110 that monitors cells arriving before switching which have been stored in storage means 102 of both the systems and detects that all the cells having arrived before switching are read when receiving an instruction externally to switch an operating state of both systems. An each-system identifier addition means 101 revises system identification information to be added to each cell, with a read stop means 120 that stops reading of cells stored in the storage means when the means 110 detects that all the cells having arrived before switching are read, and a read restart means 130 that restores reading of cells stored in each storage means when the means 120 stops reading of the cells stored in the storage means 102 of both the systems.

5. 发明专利

JP2003198608A PACKET TRANSFER SYSTEM, AND RETRIEVING METHOD AND UPDATING METHOD OF POLICY TABLE 审中-公开
公开(公告)号：JP2003198608A
公开(公告)日：2003-07-11
申请号：JP2001391563
申请日：2001-12-25
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： RYU KOICHI , MAKIMOTO AKIO , TAKAHASHI MASAMI , ANZAI TAKESHI , UGA MASANORI , OMOTANI MASAAKI , SHIOMOTO KOHEI
IPC分类号： H04L12/701 , H04L12/46 , H04L12/741 , H04L12/771 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide packet transfer system which can prevent deterioration of throughput by performing updating work of a policy table without making a period when policy retrieval is impossible. SOLUTION: The policy table 1 is constituted of a stored address 11 of each policy, a priority level number 12, an identifier 13 for storing an identifier to be compared with an identifier extracted from a packet, an action 14 which is executed when the two identifiers coincide with each other, and a next policy pointer 15 for showing a policy which is next subjected to comparison trial. The table 1 is used for retrieval of a policy of an address shown by the pointer 15, after a policy is not hit. When a policy is added, an additional policy is written in an empty address of the table 1, and the next policy address of a policy is rewritten which policy is retrieved just before the additional policy. When a policy is eliminated, the next policy address of a policy is rewritten which policy is retrieved just before the eliminated policy. An empty address in the table 1 is managed by a table 3. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003244199A BAND MANAGEMENT SCHEME AND BAND MANAGEMENT METHOD 审中-公开
公开(公告)号：JP2003244199A
公开(公告)日：2003-08-29
申请号：JP2002038631
申请日：2002-02-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OISHI TAKAHIRO , OMOTANI MASAAKI , SHIOMOTO KOHEI
IPC分类号： H04L12/801 , H04L12/707 , H04L12/711 , H04L12/733 , H04L12/911 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To assure a band in a network transferring connectionless IP datagram, even if a transfer route is changed during failures. SOLUTION: When a new band assurance is requested, acceptance determination is performed beforehand, taking topology change caused by failures in links or nodes in a network into consideration. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003209563A PACKET TRANSFERRING DEVICE, NETWORK, PROGRAM, AND RECORDING MEDIUM 审中-公开
公开(公告)号：JP2003209563A
公开(公告)日：2003-07-25
申请号：JP2002004832
申请日：2002-01-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： UGA MASANORI , OMOTANI MASAAKI , YAMANAKA NAOAKI , SHIOMOTO KOHEI , KATAYAMA MASARU
IPC分类号： H04L12/721 , H04L12/70 , H04L12/701 , H04L12/745 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To fast retrieve a policy table without increasing memory capacity. SOLUTION: Trees corresponding to a plurality of pieces of field information included in the header information of a packet are provided respectively. The information length of the field information to be an object to be compared with the header information stored in a node is set longer, as an advance is made from the start point of a tree toward its end point. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2003244226A BAND MANAGEMENT SYSTEM AND METHOD 审中-公开
公开(公告)号：JP2003244226A
公开(公告)日：2003-08-29
申请号：JP2002038641
申请日：2002-02-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OISHI TAKAHIRO , OMOTANI MASAAKI , SHIOMOTO KOHEI
IPC分类号： H04L12/911 , H04L12/707 , H04L12/711 , H04L12/733 , H04L12/801 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To secure a band even when a transfer path is changed when any failure occurs in a network for transferring a connection-less IP datagram. SOLUTION: In order to guarantee a band even after in-network topology is changed after the reservation of the band, the band is reserved along a link when the topology is changed for each edge node, or the band of each link is reserved for each possible failure. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2001345824A TAG-CONVERTING DEVICE 失效
公开(公告)号：JP2001345824A
公开(公告)日：2001-12-14
申请号：JP2000168367
申请日：2000-06-06
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI KAZUYUKI , MATSUO SATOSHI , OMOTANI MASAAKI , SENMARU TAKESHI
IPC分类号： H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide a tag converting device, with which the loss of cells does not occur, when switching from an active system to a reserve system. SOLUTION: A first packet synthesizing means 1 and a second packet synthesizing means 2 generate first and second packets by synthesizing inputted cells. When switching of the active system and the reserve system is requested, a selection information generating means 3 generates selection information showing which of first and second packets is to be selected. A first packet disassembling means 4 and a second packet disassembling means 5 generate the first and second cells by disassembling the first and second packets. A first cell storage means 6 and a second cell storage means 7 store the first and second cells separately for each class of these cells. A first cell read means 8 and a second cell read means 9 successively read out the first and second cells stored in the first and second cell storage means for each class, and when the selection information is generated by the selection information generating means 3, the timing for reading out the cells is controlled according to the control of a timing control means 10.

10. 发明专利

JPH11355304A CELL BUFFER AND ATM NODE 失效
公开(公告)号：JPH11355304A
公开(公告)日：1999-12-24
申请号：JP16374398
申请日：1998-06-11
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUOKA NAOKI , TOMONAGA HIROSHI , KAWARAI KENICHI , KATO TSUGIO , AMANO MITSUHARU , OMOTANI MASAAKI , GENDA KOICHI , DOI YUKIHIRO
IPC分类号： H04Q3/00 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To decrease the throughput that is necessary for the scheduling by distributing in time series and in the forward direction the information corresponding to the reading time point of a stored cell for each corresponding QoS(quality of service) in a set reading cycle and within an allowance range of deviation of the reading cycle. SOLUTION: A conflict control part 60 decides whether a binary information storing area is included in all storage areas of timing tables 53-1 to 53-N corresponding to each time that is updated in a cycle equal to the length of a cell. If only one binary information storing area exists, the part 60 gives a transmission request to the memory corresponding to the timing table having the information storing area among memories 110-1 to 110-N. At the same time, the part 60 performs the descending processing or service classes to the subsequent adjacent areas corresponding in time series to each other in regard to the binary information of logical value '1' which are individually stored in other areas. The memory that received a transmission request among buffer memories 111 reads out the first stored cell and sends it. A scheduling operation that decides the cell reading time is surely and effectively carried out with decrease of the throughput.

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