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1. 发明专利

JPH07153536A METHOD FOR INSERTING AND DRAWING-OUT HOT-LINE 失效
公开(公告)号：JPH07153536A
公开(公告)日：1995-06-16
申请号：JP29981393
申请日：1993-11-30
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , HITACHI LTD
发明人： MORIYA HIROYUKI , KOBORI KATSUTOSHI , MIYAKE NOBUHIRO , KIHINOKI YASUO
IPC分类号： H01R13/64 , H01R23/68
摘要： PURPOSE:To prevent any influence a maintenance testing system even if insertion and drawing-out of a package is performed under the operating condition of a device by inserting/drawing out a connector, which is mounted on one end of a package and has plural connector pins, into/from a connector receiver port. CONSTITUTION:A connector 4 mounted on a package base board 6 side is provided with two long pins 4a and two short pins 4b inside thereof, and the long pins and the short pins are alternately arranged. The long pins 4a of the connector 4, which make contact with an unit base board 7 side firstly by the pushing action of the connector 4 in the case of pushing action of the connector 4, are used for supplying power to an IC, and the short pins 4b, which make contact with the base board 7 side later, are used for supplying signals to the IC. Since a signal line is put in connection after the power supply is connected to the IC and the operation of the IC is stabilized, no influence is given to other functioning blocks at the time of inserting a connector into a package. Consequently, operation-error of the IC during the supply of the power source is eliminated, and the efficiency of the maintenance testing system can be improved.

2. 发明专利

JPH07111531A MONITORING SYSTEM FOR ALARM INFORMATION DATA GIVEN FROM EACH MONITORED STATION 失效
公开(公告)号：JPH07111531A
公开(公告)日：1995-04-25
申请号：JP25564893
申请日：1993-10-13
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD
发明人： KIHINOKI YASUO , YOSHIDA SHINICHI , HONDA NOBUYUKI
IPC分类号： H04M3/08
摘要： PURPOSE:To analyze the contents of the alarm information data given from each monitored station by increasing the monitored stations and storing economically each monitored station in a monitoring station. CONSTITUTION:Each monitored station 101 sends various states of each switchboard 102 to a monitoring station 105 after collecting and editing those states as the alarm information data in a multiframe format form. Meanwhile the station 105 temporarily stores the received alarm information data after multiplexing for each time slot and in time division. Then these stored data are periodically read out and analyzed in terms of their contents. Then various states of each switchboard 102 can be economically monitored when the analyzing results of the data contents are displayed as the monitoring results.

3. 发明专利

JP2002247098A PPP FRAME MULTIPLEXING DEVICE, METHOD AND SUBSCRIBER SWITCHBOARD 失效
公开(公告)号：JP2002247098A
公开(公告)日：2002-08-30
申请号：JP2001042016
申请日：2001-02-19
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MITSUNAGA DAIJI , KIHINOKI YASUO , OKUMURA MAKOTO , YAMAMOTO NAOHIKO , OOKASHIWA TOMOHARU , HIRASHIMA KAZUHIKO
IPC分类号： H04J3/00 , H04L12/02 , H04L12/70 , H04L12/951 , H04L29/06 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To enhance line efficiency in the case of connecting a PPP frame multiplexing device with an IP network by using an ISDN line. SOLUTION: This subscriber switchboard is provided with a subscriber storage part (SBM) 13a to store a plurality of subscriber terminals and to perform line concentration of subscriber lines and a service processing part (ASM) 13b to store many subscriber storage parts (SBM) and to realize a service processing function. A distribution switch part 21b identifies a subscriber at a transmitting origin of information including a PPP frame transmitted from the SBM 13a, further adds subscriber identification information and multiplexes the PPP frame. An IP network IF 21f converts the multiplexed PPP frame into PPPoE and outputs it to the IP network.

4. 发明专利

JPH08251681A ADDRESS CONVERSION SYSTEM FOR FRAME MULTIPLEXING DEVICE 失效
公开(公告)号：JPH08251681A
公开(公告)日：1996-09-27
申请号：JP4998395
申请日：1995-03-09
申请人： HITACHI LTD
发明人： YASUDA AKIO , KIHINOKI YASUO
IPC分类号： H04J3/08 , H04M3/00 , H04Q11/04
摘要： PURPOSE: To reduce the memory capacity of an address conversion table and to improve the processing capacity of an address conversion system for a frame multiplexing device. CONSTITUTION: In the case of executing the address conversion processing of a frame inputted to the frame multiplexing device 101 by an address conversion part 114 under control by a control part 111, the address conversion can be executed by the minimum use of a CH/DLCI (channel number/data link connection identifier) conversion table 124 because an address conversion table part 102 is provided with a DLCI value numbering table 123. Since the device 101 is arranged on the prestage of a network, the contents of the table 102 itself can sharply be reduced and the processing capacity of the device 101 can also be improved.

5. 发明专利

JPH08163625A RADIO CALLING SYSTEM 失效
公开(公告)号：JPH08163625A
公开(公告)日：1996-06-21
申请号：JP29924494
申请日：1994-12-02
申请人： HITACHI LTD
发明人： KOJIMA KIMIFUMI , HIROSHIMA SOTARO , SUZUKI TOSHIRO , KIHINOKI YASUO , YASUDA AKIO
IPC分类号： H04L1/00 , H04L1/24 , H04M11/02 , H04W88/18 , H04Q7/16
摘要： PURPOSE: To detect an error in transmission between a central station and a transmitting station and to start taking measures against it through simple constitution. CONSTITUTION: The central station 1 transmits a message to which an error correction code for correcting a transmission error of the message is added to a receiver 4 by radio by using respective transmitting stations 2. The receiver 4 corrects the transmission error generated in the message which is received by radio by using the error correction code added to the message. A transmitting station 2 which repeats the message, on the other hand, detects whether or not the message received from the central station has the transmission error by using the error correction code added to the message and performs specific trouble measure processing when the frequency of the detected transmission error exceeds a specific frequency.

6. 发明专利

JPH10200944A MOBILE TERMINAL LOCATION RETRIEVAL METHOD, ITS SYSTEM, METHOD FOR CONFIRMING LOCATION OF SPECIFIC PARTY AND SIMPLE MOBILE TERMINAL EQUIPMENT 失效
公开(公告)号：JPH10200944A
公开(公告)日：1998-07-31
申请号：JP22297
申请日：1997-01-06
申请人： HITACHI LTD
发明人： SHIRAI SAYURI , YASUDA AKIO , KIHINOKI YASUO , KOJIMA KIMIFUMI
IPC分类号： G01S5/02 , H04W4/02 , H04W64/00 , H04Q7/34
摘要： PROBLEM TO BE SOLVED: To specify a location of a mobile terminal equipment within a very limited range by eliminating the need for calling the mobile terminal equipment and reducing the line occupancy time. SOLUTION: For example, when a prescribed position retrieval request including a telephone number of a mobile terminal equipment 104 is given from a terminal equipment 101 to a service control node 100, a prescribed area is roughly confirmed by position registration information of the terminal equipment 104 by the node 100, the terminal equipment 104 is verified on a PHS network by a verification request from each base station 102 in the area to the terminal equipment 104, and an interface number with the base station 102 near the terminal equipment 104 obtained in this case is converted into area name data by the node 100 and the data are sent to a request source terminal equipment 101.

7. 发明专利

JPH08163623A RADIO CALLING SYSTEM 失效
公开(公告)号：JPH08163623A
公开(公告)日：1996-06-21
申请号：JP29924294
申请日：1994-12-02
申请人： HITACHI LTD
发明人： KUROKI YOSHINORI , SUZUKI TOSHIRO , KOIDE AYUMI , KOJIMA KIMIFUMI , KIHINOKI YASUO
IPC分类号： G01S5/14 , G01S1/00 , G01S19/14 , H04H20/67 , H04W84/02 , H04W92/00 , H04Q7/16 , H04Q7/36
摘要： PURPOSE: To easily synchronize all transmitting stations with excellent precision by making each transmitting station send a message received from a central station to a receiver on the basis of current clocked time. CONSTITUTION: This system is equipped with a GPS timer which clocks the time on the basis of current time sent from a GPS satellite to a central station 1 and transmitting station 2. The encoding part 12 of the central station 1 adds the actual time as information specifying the time when a message received from a public telephone network 5 is sent from the transmitting station 2 to the received message on the basis of the current clocked time that the GPS timer of the station clocks, and distributes the message to respective transmitting stations 2. A synchronization part 21 of each transmitting station 2 sends the message from its transmitter 22 to the receiver 4 at the time specified with the actual time added to the message on the basis of the current clocked time clocked by its GPS timer.

8. 发明专利

JPH08163624A RADIO CALLING SYSTEM 失效
公开(公告)号：JPH08163624A
公开(公告)日：1996-06-21
申请号：JP29924394
申请日：1994-12-02
申请人： HITACHI LTD
发明人： KUROKI YOSHINORI , SUZUKI TOSHIRO , KOIDE AYUMI , KOJIMA KIMIFUMI , KIHINOKI YASUO
IPC分类号： G01S19/14 , H04W24/04 , H04W56/00 , H04W92/12 , H04W92/20 , H04Q7/16 , G01S5/14 , H04Q7/36
摘要： PURPOSE: To easily synchronize all transmitting stations with excellent precision by sending a received message from a transmitter exactly as specified with the time added to the message. CONSTITUTION: Each transmitting station 2 clocks its current time by adding the delay time required from the transmission of a reference station selected among transmitting stations 2 to the reception of this station to the time received from the reference station. To find the delay time required from the transmission of the reference station to the reception of this station. the reference time clocked at the reference station based on the information on time received from a satellite by radio is sent by radio to the respective transmitting stations 2, each of which clocks current time to be referred to based on the information on time received from the satellite by radio and finds the delay time required from the transmission of the reference station to the reception of the transmitting station 2 from the difference between the reference time sent from the reference time and the time to be referred to at the point of time when the reference time is received.

9. 发明专利

JPH0669849A MOBILE OBJECT COMMUNICATION SYSTEM PROVIDED WITH TESTING FUNCTION AND TESTING METHOD 失效
公开(公告)号：JPH0669849A
公开(公告)日：1994-03-11
申请号：JP22044692
申请日：1992-08-19
申请人： HITACHI LTD
发明人： KIHINOKI YASUO , FUKUSHIMA YUTAKA
IPC分类号： H04B7/26 , H04B17/00
摘要： PURPOSE:To provide a test control method for confirming the normality of radio zone switching processing by simulating the movement of a mobile station over the radio zones of plural base stations. CONSTITUTION:Test terminals 103 and 104 enabling the change of transmission outputs are controlled from the side of an operation system 109 through a test control link and after a base station A101 and the test terminal A103 spread a radio link, the transmission output of the test terminal 103 is lowered. At the same time, the test terminal B104 starts transmission with the same carrier and time slot and the movement of a mobile station 110 from a radio zone 1 05 of the base station A to a radio zone 106 of a base station B is simulated. Thus, the normality of radio zone switching processing at the base station A101, base station B102 and line control equipment 107 can be confirmed without actually moving the test terminals.

10. 发明专利

JPH03194613A ELECTRONIC CIRCUIT BOARD 失效
公开(公告)号：JPH03194613A
公开(公告)日：1991-08-26
申请号：JP33270189
申请日：1989-12-25
申请人： HITACHI LTD
发明人： KIHINOKI YASUO
IPC分类号： G06F1/18 , G06F3/00 , H05K1/11
摘要： PURPOSE:To attain insertion with a simple operation on the way of online in a device by providing a bus driver control circuit which makes the output of a bus driver connected to a common bus into a high impedance state for a prescribed time to prevent from giving adverse effect to the board on another bus after turning-on of a power supply is detected. CONSTITUTION:Power supply terminals 4a are arranged at the upper part, intermediate part and lower part of a connector 1 in an electronic circuit board 7, and a bus signal line is arranged in the intermediate part of the terminals 4a. The power supply terminals 4a are arranged so that they are securely connected to the board ealier than the bus signal line even if the board 7 is obliquely inserted. Then, the bus driver control circuit 5 which sets the output of the bus driver to be in a high impedance state so that the board on the other bus is not adversely influenced for a prescribed constant from when power is supplied is added. Consequently, the board 7 is easily attached and detached without the malfunction of the device while the device is online-operated and without complicated operation and procedure. Thus, operability and maintenance improve.

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