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1. 发明专利

JP2001238279A CHANNEL APPARATUS AND INTERFACE UNIT 失效
公开(公告)号：JP2001238279A
公开(公告)日：2001-08-31
申请号：JP2000048891
申请日：2000-02-21
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD , OKI ELECTRIC IND CO LTD , NEC CORP
发明人： OBAYASHI JUNYA , MORIWAKI NORIHIKO , DOI YUKIHIRO , GENDA KOICHI , KOBAYASHI TAKAFUMI , MATSUO SATOSHI , TSUCHIDA TOMOHIRO , NOGUCHI HIROSHI , SATO DAISUKE
IPC分类号： H04Q3/42 , H04Q1/02 , H04Q11/04
摘要： PROBLEM TO BE SOLVED: To provide a channel apparatus that can easily change a redundancy form of a line adaptor section with a high mount density. SOLUTION: In the cannel apparatus where switch sections are made redundant, each interface unit comprises 1st and 2nd group line adaptor sections, at least a couple of switch interfaces where line adaptor sections are multiplexed to be coupled with an active system or standby switch section, and a back wiring board(BWB) that forms connection wiring between each line adaptor section and each switch interface. The BWB has a wiring pattern for the case that the 1st group line adaptor section is used for the active system and the 2nd group line adaptor section is used for the standby system and has a wiring pattern for the case that all the line adaptor sections are used for the active system and each the 2nd group line adaptor section is provided with an input selection means that validates a part of the connection wirings on the BWB in response to the application form and invalidates the rest.

2. 发明专利

JP2003186701A SOFTWARE RELIABILITY GROWTH MODEL SELECTION METHOD, SOFTWARE RELIABILITY GROWTH MODEL SELECTION PROGRAM AND COMPUTER READABLE RECORDING MEDIUM TO RECORD MODEL SELECTION PROGRAM, AND SOFTWARE THEREFOR 审中-公开
公开(公告)号：JP2003186701A
公开(公告)日：2003-07-04
申请号：JP2001390074
申请日：2001-12-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE
IPC分类号： G06F11/28 , G06F9/44
摘要： PROBLEM TO BE SOLVED: To provide a software reliability growth model selection method which makes it possible to select the software reliability growth model out of a plurality of software reliability growth models which fits most to actually measured data at a stage immediately after a test is started, a computer readable recording medium to record the software reliability growth model selection program and the model selection program, and a selection device for the software reliability growth model. SOLUTION: What has an exact solution and the minimal value for an indication which is a relatively projected error between a projected value and the actually measured data with a difference equation where the software reliability growth model matches up to both the equation and the exact solution at an extreme limit of zero difference interval being used is selected as the software reliability growth model which fits most to the actually measured data. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003140929A METHOD AND PROGRAM FOR PREDICTING SOFTWARE RELIABILITY, COMPUTER READABLE RECORDING MEDIUM RECORDING THE PROGRAM, AND DEVICE FOR PREDICTING SOFTWARE RELIABILITY 审中-公开
公开(公告)号：JP2003140929A
公开(公告)日：2003-05-16
申请号：JP2001338120
申请日：2001-11-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE
IPC分类号： G06F11/34 , G06F11/36
摘要： PROBLEM TO BE SOLVED: To provide method and program for predicting software reliability, a computer readable recording medium recording the predicting program, and a software reliability predicting device allowing accurate planning of a test process by estimating an upper limit of an estimated value of the number of potential bugs existing in software just after starting the test and thus estimating the test period somewhat long. SOLUTION: In regression analysis for estimating a parameter of a software reliability growth model, a parameter is estimated using software reliability growth model and equation in a continuous limit and a differential equation that has a matched exact solution and is equivalent to projection conversion and using a property related to an obtainable compound ratio value of the projection conversion.

4. 发明专利

JP2002118556A TRAFFIC MEASURING METHOD AND APPARATUS 失效
公开(公告)号：JP2002118556A
公开(公告)日：2002-04-19
申请号：JP2000306360
申请日：2000-10-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE , SHIODA SHIGEO
IPC分类号： H04L29/14 , H04L12/24 , H04L12/26
摘要： PROBLEM TO BE SOLVED: To provide a traffic measuring method and an apparatus thereof which is capable of measuring the operating conditions of physical or logic links in a network, with taking account of a burst traffic condition. SOLUTION: The traffic quantity flowing in a link is measured at very short time intervals (t) using an external measuring instrument or module separate from network apparatus. Only when the measurement result exceeds a predetermined threshold, or about only data of a specified number of significant digits the measurement result is stored and outputted every totaling time T (>t).

5. 发明专利

JP2000122860A METHOD AND DEVICE FOR ESTIMATING SOFTWARE RELIABILITY 失效
公开(公告)号：JP2000122860A
公开(公告)日：2000-04-28
申请号：JP28979998
申请日：1998-10-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE
IPC分类号： G06F11/28 , G06F9/06 , G06F11/34 , G06F11/36
摘要： PROBLEM TO BE SOLVED: To provide a software reliability estimating method which accurately estimates the parameter of a software reliability growth model at a stage where the number of bug detection events is a small number and just after a test is started and accurately estimates software reliability and to provide its device. SOLUTION: A storage device 5 stores bug occurrence date and time when bugs occur in software when the software inputted from an input device 4 is tested and the number of bug occurrence events, a bug number accumulating part 6 performs accumulation, a regression analyzing part 7 has an exact solution, uses a coinciding difference equation together with the software reliability growth model, an equation and the exact solution at the limit of a difference interval zero and estimates the parameter for the software reliability growth model by regression analysis from the bug occurrence date and hour when the software is tested and the input data of the number of the bug occurrences.

6. 发明专利

JPH11243398A METHOD FOR SETTING ATM VIRTUAL PASS CAPACITY AND ITS DEVICE 失效
公开(公告)号：JPH11243398A
公开(公告)日：1999-09-07
申请号：JP4519198
申请日：1998-02-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE , SHIODA SHIGEO
IPC分类号： H04Q3/00 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To efficiently operate ATM resources by calculating an ATM virtual pass capacity that satisfies a cell loss target rate by using the attenuation rate of an auxiliary distribution of the number of cells that arrive per unit time which are calculated based on the frequency of the number of 1st and 2nd arriving cells exceeding a threshold. SOLUTION: A number of cells counting part 1 counts the umber of arrival cells to cell transmission wait buffers 121,... in each preliminarily set cycle T based on the counting results of soft counters 131,... and registers them on a table 2. An excessive times counting part 4 registers the times to exceed the product of the number of arrival cells per unit time which is preliminarily set in a threshold registering part 3 and the cycle T in each cycle and registers them on a table 5. A frequency calculating part 6 calculates the frequency of excessive times. A set capacity calculating part 7 calculates an ATM virtual pass capacity that satisfies a cell loss target rate by using the attenuation ratio of an auxiliary distribution of the number of cells that arrive per unit time based on the frequency calculated by the part 6 and the arrival cell numbers calculated by the part 1.

7. 发明专利

JP2003242433A COMMUNICATION QUALITY DESIRED VALUE DETERMINING METHOD, ITS DEVICE, ITS PROGRAM AND MEDIUM FOR RECORDING ITS PROGRAM 审中-公开
公开(公告)号：JP2003242433A
公开(公告)日：2003-08-29
申请号：JP2002037952
申请日：2002-02-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： UCHIDA MASATO , SATO DAISUKE , ABE TAKERO
IPC分类号： G06F19/00 , G06Q10/04 , G06Q50/00 , G06Q50/30 , G06Q50/32 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To determine a highly reliable communication quality desired value by solving a lack of reliability caused by using data on similar communication service. SOLUTION: An evaluation value to an optional communication quality level of the attention paying communication service is determined by using the specified content of SLA in the attention paying communication service (Step 1). An estimate of an income of a network enterprise corresponding to the communication quality level obtained from the attention paying communication service is determined (Step 2). An evaluation value to the communication quality level and an overall evaluation value of the estimate of the income of the network enterprise are determined from these results (Step 3). The communication quality level for optimizing the overall evaluation value is determined, and is set as the communication quality desired value (Step 4). COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2002118557A METHOD AND APPARATUS FOR MANAGING OPERATING BAND OF LINK AND METHOD AND APPARATUS FOR ESTIMATING BAND EXPANSION TIMING 失效
公开(公告)号：JP2002118557A
公开(公告)日：2002-04-19
申请号：JP2000306361
申请日：2000-10-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE , SHIODA SHIGEO
IPC分类号： H04L29/14 , H04L12/24 , H04L12/26
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus which accurately take hold of the operating conditions of physical or logic links in a network, especially with taking account of a burst traffic condition, and manage the operating bands of the links, based thereon, and a method and an apparatus for estimating the band expansion timing. SOLUTION: A traffic measurement is executed to measure the operating conditions of links at very short time intervals within a range of a practical memory capacity, using an external measuring instrument or module separate from network apparatus such as exchanges, routers, etc. A managing apparatus totals measurement results to extract trend components of the number of times exceeding a threshold for each link.

9. 发明专利

JP2002064489A METHOD FOR STORING TRAFFIC DATA, RECORDING MEDIUM WITH ITS PROGRAM RECORDED THEREIN AND DEVICE FOR STORING TRAFFIC DATA 失效
公开(公告)号：JP2002064489A
公开(公告)日：2002-02-28
申请号：JP2000246641
申请日：2000-08-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE
IPC分类号： H04L12/70 , H04L12/24 , H04L12/26 , H04L29/14 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To store traffic data having a volume as large as possible in a limited memory while minimizing the number of sorting times. SOLUTION: Traffic data flowing through a network is totalized for each combination of predetermined data (traffic type) characterizing the traffic and stored in a limited memory. In such a method for storing traffic data in a limited memory, traffic data arriving within a fixed micro time is stored for each traffic type, number of packets or bytes (rate) arriving within the fixed time is counted, and a memory for actually storing the data is divided into first and second memory areas. Partition of the first and second memory areas is sorted by the number of bytes/number of packets and the data is stored in the second area or discarded therefrom using that rate.

10. 发明专利

JP2002222179A INSTRUMENT AND METHOD FOR MEASURING RATE FUNCTION, PROGRAM, AND RECORDING MEDIUM 失效
公开(公告)号：JP2002222179A
公开(公告)日：2002-08-09
申请号：JP2001017509
申请日：2001-01-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO DAISUKE , SHIODA SHIGEO
IPC分类号： G06F17/18
摘要： PROBLEM TO BE SOLVED: To directly measure a rate function from an objective system. SOLUTION: A realization value of a probability variable At having a parameter t is measured from the stochastic system of the analyzing object by a measuring means 10 in a processing part 1, a complementary probability distribution P At>=γt} of the probability variable At where a probability level At/t provided by dividing the probability variable At by the parameter t comes to an optional value γ or more is estimated by a probability distribution estimating means 11 based on a measured result therein, and the rate function I(γ) showing a distribution state of the complementary probability distribution P At>=γt} provided therein is calculation-output by a rate function calculating means 12.

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