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1. 发明专利

JPH10312225A MULTI-PROCESSOR SYSTEM 失效
公开(公告)号：JPH10312225A
公开(公告)日：1998-11-24
申请号：JP12040897
申请日：1997-05-12
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： YAMAZAKI TSUTOMU , MORITA KAZUO
IPC分类号： G06F11/20 , G06F1/20 , G06F15/16 , G06F15/177
摘要： PROBLEM TO BE SOLVED: To permit other normal CPU to succeed the processing of CPU whose cooling means faults by suppressing the processing in CPU where cooling is executed by means of the cooling means when the fault occurs in the specified cooling means. SOLUTION: Cooling fans 111 and 112 are provided for plural CPU 101 and 102 in addition to a cooling fan 110 cooling a whole system. The cooling fans 111 and the cooling fan 112 cool CPU 101 and CPU 102 whose temperatures rise by heat generated during an operation. The cooling state monitoring circuit 122 of a system control part 121 monitors the states of the cooling fans 111 and 112. When the faults occur in the cooling fans 111 and 112, the execution of the processing in CPU 101 and 102 is suppressed, a degenerate operation is executed and the operations of CPU 101 and 102 is stopped.

2. 发明专利

JPH1164352A ROTATION ANOMALY MONITORING MECHANISM 失效
公开(公告)号：JPH1164352A
公开(公告)日：1999-03-05
申请号：JP23068397
申请日：1997-08-27
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： MIYAUCHI MASASHI , MORITA KAZUO , FUJIMURA ATSUSHI
IPC分类号： G01P3/44
摘要： PROBLEM TO BE SOLVED: To permit the increase of the number of a body whose rotation is to be monitored without changing the number of anomaly detecting circuits by serially connecting and supplying time-divided rotation signals to an anomaly detecting circuit and artificially performing rotation monitoring on a single body whose rotation is to be monitored. SOLUTION: For monitoring the number of the rotation of cooling fans 1 to 4 by time-dividing, pulse signals 11 to 14 are converted into a single time- divided pulse signal 33 by a selecting part 31 and inputted to an anomaly detecting circuit 21. A determining circuit 24 determines whether a counted value 23 indicates rotation anomaly or not. In the case that it is anomalous, an error flag 25 is raised, and it is notified to an anomaly display device. In this case as well, as in the case of a single fan, a single flag is sufficient. As it is possible to perform the anomaly detection of all the fans by the single anomaly detecting circuit 21 even in the case that there are a plurality of fans in this way, there is no need for providing an anomaly detecting circuit for every fan. This eliminates the need for the modification or extension of the anomaly display device.

3. 发明专利

JPH1115580A RACK MOUNTING-TYPE COMPUTER SYSTEM 失效
公开(公告)号：JPH1115580A
公开(公告)日：1999-01-22
申请号：JP17005097
申请日：1997-06-26
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： YAMADA HIROSHI , YAMAZAKI TSUTOMU , ICHIKAWA TOSHIYUKI , MORITA KAZUO
IPC分类号： G06F1/16 , G06F1/10 , G06F1/18 , G06F3/00
摘要： PROBLEM TO BE SOLVED: To provide technique for realizing flexible extension in terms of a stage in accordance with a system scale and, besides, the improvement of highly reliable configuration corresponding to a system request and of operation property including maintenance. SOLUTION: A rack mounting-type computer system is the one where a system is constructed with a central processing part 100, an input/output control part 110 and an input/output equipment group 120 as different rack units and is provided with the center processing part 100 having a central processor 110 and input/output connecting adapters 108 and 109 for connecting a main storage device to an input/output control part 110, the input/output control part 110 having the central processing part 100 and input/output adapters 111-113 for connecting the central processing part 100 to the input/output equipment group and an interface cable having a synchronization clock loop in a cable for connecting the input/output connecting adapters 108 and 109 to the input/output adapters 111-113.

4. 发明专利

JPH09146711A INTEGRATED DISK DEVICE 失效
公开(公告)号：JPH09146711A
公开(公告)日：1997-06-06
申请号：JP30631095
申请日：1995-11-24
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： FUJIMURA ATSUSHI , MORITA KAZUO
IPC分类号： G06F3/00 , G06F1/18 , G06F1/20 , G06F3/06 , G11B33/12 , G11B19/02
摘要： PROBLEM TO BE SOLVED: To simultaneously attain the high speed operation and high density packaging of plural disk units in an integrated disk device. SOLUTION: A mother board 102 forming a high speed control bus such as an SCSI as a wiring pattern is arranged on the center of a casing and plural disk units 101 of which hot lines can be connected/disconnected are directly fitted to the front side of the mother board 102 through bus connectors. Connector units 103 for external connection having control bus connecting connectors, terminal units 104 having control bus terminating circuits, power supply units 105 to 107 for supplying power to the disk units 101, and a fan unit having a fan for cooling the inside of the casing are directly fitted to the rear side of the mother board 102 through connectors and all wiring for connecting respective units is executed by the wiring pattern on the mother board to integrate the whole device.

5. 发明专利

JPH1097354A UNINTERRUPTIBLE POWER SOURCE CONNECTING METHOD 失效
公开(公告)号：JPH1097354A
公开(公告)日：1998-04-14
申请号：JP25269896
申请日：1996-09-25
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： KOYANAGI OSAMU , FUJIMURA ATSUSHI , MORITA KAZUO
IPC分类号： G06F1/26 , G06F1/30 , H02J7/34 , H02J9/00
摘要： PROBLEM TO BE SOLVED: To guarantee the saving time for application, etc., by starting a saving process for the execution state of the application, etc., on receiving a power failure detection output signal from a 1st UPS(uninterruptible power unit) in case of a power failure, and then starting a forcible shutdown process on receiv ing a power failure detection output signal from a final UPS unless the power supply recovers. SOLUTION: When the AC power source of a UPS 101 is turned OFF, UPSs 101 to 103 start backup processes by a battery 108. Once, however, the UPS 101 starts the backup process, the UPSs 102 and 103 are supplied with electric power, so the backup process is quit. A system control part 105 recognizes the power failure and saves the execution states of application programs, etc. Then when a power failure state is entered again a backup time later and the final UPS starts the backup process, the saving process for the power failure is not completed, so the device 104 forcibly performs the shutdown process.

6. 发明专利

JPH09167036A ELECTRIC POWER SUPPLY CONTROL UNIT 失效
公开(公告)号：JPH09167036A
公开(公告)日：1997-06-24
申请号：JP33010495
申请日：1995-12-19
申请人： HITACHI LTD , HITACHI INFORMATION TECHNOLOGY
发明人： TANOHARA OSAMU , MORITA KAZUO
IPC分类号： G06F1/26 , H02J1/00
摘要： PROBLEM TO BE SOLVED: To enable a user to select a electric power supply control system by actuating or stopping plural devices mounted in a rack together at a time. SOLUTION: An electric power supply control unit 1 is provided with switches SW1-SW3, which divide a power supply line into three systems, supply electric power to three devices through a power supply line 10 of one system, and connects or disconnects each power supply line 10 to or from the commercial power source, by the power supply lines. An ON/OFF switch part 4 of the power control unit 1 turns ON and OFF the switches SW1-SW3 with an ON/ OFF command from a switch control part 5 to connect or disconnect the power supply lines 10 connected to the switches SW1-SW3 to or from the commercial power source. Here, rush current suppressing circuits 6 are provided by the power supply lines 10 and suppress rush currents generated when the switches SW1-SW3 are turned on.

7. 发明专利

JPH0527327B2 失效
公开(公告)号：JPH0527327B2
公开(公告)日：1993-04-20
申请号：JP21296183
申请日：1983-11-11
申请人： HITACHI LTD
发明人： FURUNO SADAAKI , MORITA KAZUO
IPC分类号： H02J3/00

8. 发明专利

JPS5886617A POWER-ON STARTING SYSTEM 失效
公开(公告)号：JPS5886617A
公开(公告)日：1983-05-24
申请号：JP18388081
申请日：1981-11-18
申请人： HITACHI LTD
发明人： MORITA KAZUO
IPC分类号： H02J1/00 , G06F1/26 , G06F1/00
摘要： PURPOSE:To secure the safety of electronic equipment without automatically sending a start command even if the transistor (TR) of a power-on switch is faulty owing to a short circuit, by making it a starting command condition that the TR is turned on temporarily and then turned off. CONSTITUTION:In an active state, the contact k(2-1) of a relay K2 is made. In this state, when a power-on switch 1 is turned on, contacts k(1-1) and k(1-2) of a relay K1 are made. Then, the relay K2 does not work, and the contact k(2-1) is broken; and the relay contact k(1-2) of an AND circuit 6 is made, the relay contact k(2-1) is broken, and a relay ON1 does not work. Then, when the switch 1 is turned off, the relay K2 is energized again to make the relay contact k(2-1). The relay k(1-2), on the other hand, is in a self-holding state and contacts k(1-2) and k(2-1) are made to send a start command to a control part 7, placing the relay ON1 in a self-holding state.

9. 发明专利

JPS53140555A DIFFERENTIAL VOLTAGE DETECTION CONTROL SYSTEM 失效
公开(公告)号：JPS53140555A
公开(公告)日：1978-12-07
申请号：JP5427277
申请日：1977-05-13
申请人： HITACHI LTD
发明人： MORITA KAZUO
IPC分类号： H02J1/00 , G05F1/00 , G05F1/10
摘要： PURPOSE:To execute sequence control and to compensate load circuit, by performing starting/interrupting of sequence automatically, eliminating inhibit mechanism and power interruption assuring mechanism under noncontrolled conditon.

10. 发明专利

JPS5295074A CONTACT CLEANING METHOD 失效
公开(公告)号：JPS5295074A
公开(公告)日：1977-08-10
申请号：JP1158476
申请日：1976-02-04
申请人： HITACHI LTD
发明人： MORITA KAZUO
IPC分类号： H01H1/60 , H01H9/54

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