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1. 发明专利

JP2007043863A Electronic equipment 有权
标题翻译：电子设备
公开(公告)号：JP2007043863A
公开(公告)日：2007-02-15
申请号：JP2005227559
申请日：2005-08-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANAI JIRO , ARAKAWA OSAMU
IPC分类号： H02M3/155 , G06F1/26 , G06F11/24
摘要： PROBLEM TO BE SOLVED: To provide electronic equipment, wherein the enhanced efficiency due to voltage-varying function is maintained by software and further a test other than a voltage test can be conducted, even if a voltage varying program is inoperative. SOLUTION: The electronic equipment is so constructed as to supply the voltage of direct-current power supply to an internal electronic device from a built-in voltage source. The equipment supplies voltage to an internal electronic device, in accordance with a bit inside an I/O register for switching between fixed voltage supply for supplying predetermined fixed voltage and variable voltage supply, where multiple voltages can be supplied and a bit for controlling the combined resistance value. Voltage is supplied when it is unnecessary to vary voltage or when the power is turned on, a default fixed voltage is supplied to an electronic device; and when voltage is varied, the combined resistance is changed, in accordance with the set value of the corresponding bit. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种电子设备，其中通过软件保持由于电压变化功能而提高的效率，并且进一步可以进行电压测试以外的测试，即使电压变化程序不起作用。
解决方案：电子设备的结构是从内置电压源向内部电子设备提供直流电源电压。该设备根据I / O寄存器内的位将电压提供给内部电子设备，用于在提供预定的固定电压的固定电压源和可变电源之间进行切换，其中可提供多个电压，以及用于控制组合的位电阻值。当不需要改变电压时或者当电源接通时提供电压，向电子设备提供默认固定电压; 并且当电压变化时，组合电阻根据相应位的设定值而改变。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JPH113146A POWER SUPPLY SYSTEM 失效
公开(公告)号：JPH113146A
公开(公告)日：1999-01-06
申请号：JP15636997
申请日：1997-06-13
申请人： HITACHI LTD
发明人： KOMIYA MITSUO , KANAI JIRO
IPC分类号： G06F1/26
摘要： PROBLEM TO BE SOLVED: To minimize increment in the output capacity of power supply and to attain redundancy without increasing the number of power supplies by branching a power supply output to two outputs, connecting one of the outputs in parallel with the other through a diode and then connecting one output to a load sequence. SOLUTION: An output from a power supply 1 is branched to two outputs, one is directly connected to a load sequence 10 and the other is connected to a diode 8. An output 6 from a power supply 2 is branched to two outputs, one is directly connected to a load sequence 12 and the other is connected to a diode 9. The outputs of the diodes 8, 9 are connected in parallel and connected to a load sequence 11. Electronic parts loading units 20 to 23 and fans 30 to 33, 40, 50 to 53 are loaded in cooling air routes 60 to 63 and the device is redundantly constituted so as to cool the units 20 to 23 even when any one of the FANs 30 to 33 is stopped. Even when a fault is generated in the power supply 1 and the output 5 is stopped for instance, power is normally supplied to the load sequence 11 and the FAN 40 is normally driven.

3. 发明专利

JP2001068886A ELECTRONIC DEVICE COOLING EQUIPMENT 失效
公开(公告)号：JP2001068886A
公开(公告)日：2001-03-16
申请号：JP24102699
申请日：1999-08-27
申请人： HITACHI LTD
发明人： KANAI JIRO , OGURO TAKAHIRO , KOMIYA MITSUO , YOSHIOKA TAKASHI , TAKAHASHI TATSUYA
IPC分类号： H05K7/20 , F25D13/00 , F25D17/02
摘要： PROBLEM TO BE SOLVED: To prevent a cooling liquid from rising sharply in temperature by a method wherein an electronic device cooling equipment is equipped with cooling units, and the ratio of the number of ON units to the number of OFF units is controlled. SOLUTION: Two or more cooling units, for instance, three cooling units, a cooling unit 9A composed of a compressor 6 and others inside a refrigeration cycle 5 and cooling units 9B and 9C of the same structure with the cooling unit 9A, are provided inside an electronic device cooling equipment 1. Controllers 7A, 7B, and 7C and temperature detectors 8A, 8B, and 8C which control the cooling units 9A, 9B, and 9C are each connected to the cooling units 9A, 9B, and 9C. The compressors 6 are successively turned OFF one by one depending on the heat from an electronic device load, the ratio of the number of ON compressors 6 to the number of OFF compressors 6 is controlled, and the compressors are stopped from being turned OFF when a cooling power gets smaller than the heat from an electronic device. By this setup, a cooling liquid rises in temperature corresponding to a change in the heat, and a cooling liquid can be prevented from rising sharply in temperature.

4. 发明专利

JP2000069667A VOLTAGE CONTROL SYSTEM AND ELECTRONIC DEVICE 失效
公开(公告)号：JP2000069667A
公开(公告)日：2000-03-03
申请号：JP31776698
申请日：1998-11-09
申请人： HITACHI LTD
发明人： KAKITA HIROSHI , KAWAJI MOTONORI , OBA TAKAO , KANAI JIRO , TOYA SHINICHIRO , HIDAKA HIROYUKI , KOKAYU YOSHIHIRO
IPC分类号： G06F1/18 , H02J1/00
摘要： PROBLEM TO BE SOLVED: To provide a voltage control system and an electronic device which does not require redesigning of a substrate itself, even when the power supply voltage is changed due to the replacement of a main electronic component. SOLUTION: A main electronic component 200A and a sub-electronic component 300 are mounted on a substrate 100. The substrate 100 is provided with a first power supply layer 12 and a second power supply layer 14 connected to the power supplies 32, 34 and an exclusive power supply layer 16 which is freed from the power supply. The main electronic component 200A receives voltages from the power supply layers 12, 14, while the sub-electronic part 300 receives voltages via the main electronic component 200A and an exclusive power supply layer 16.

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