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1. 发明专利

JPH06111552A ELECTRONIC EQUIPMENT AND ITS DUSTPROOF COVER 失效
公开(公告)号：JPH06111552A
公开(公告)日：1994-04-22
申请号：JP25929892
申请日：1992-09-29
申请人： HITACHI LTD , HITACHI PROCESS COMPUTER ENG
发明人： NISHIOKA TAKAHIRO , WATANABE HIROSHI , YAMAGUCHI SHOJI , SUENAGA MASASHI , KIMURA YOSHITERU , KINASHI TERUMI , MINEMURA TOMOKAZU , SHIGA TAKAYOSHI
IPC分类号： G11B33/02 , G11B33/14 , H05K5/02 , H05K7/20
摘要： PURPOSE:To prevent dust from intruding from a gap not hermetically sealed into a cabinet by providing both a gap without the function of the air intake/exhaust port of the cabinet of electronic equipment and a cover formed in shape to cover the air exhaust port. CONSTITUTION:The electronic equipment is comprised of an exothermic part 18, the cabinet 16 which houses the exothermic part 18, a fan 15 which cools the exoergic part 18, and an air filter 14 which filters cooling air. The air intake 12 which intakes the cooling air and the air exhaust port 13 which exhausts it are provided to the cabinet 16. The fan 15 is provided in the vicinity of the air exhaust port 13, and a wind direction 15c when an operation is performed is set in a direction advancing from the air intake 12 to the air exhaust port 13. The gap 10 exists in the cabinet 16 in addition to the air intake 12 and the air exhaust port 13. The cover 17 provided with an aperture part 19 which covers the air outlet 13 and the gap 10 is provided in the cabinet 16. When the operation is performed, pressure loss by the passage resistance of the air is generated between the inside of the cover 17 and the external air, and air pressure in the cover 17 is higher than that of the external air. Therefore, no air flows from the outside to the inside of the cover. Also, the dust in the air that flows in from the air intake 12 can be eliminated by the filter 14.

2. 发明专利

JPH08148868A COOLING MECHANISM OF DATA PROCESSOR 失效
公开(公告)号：JPH08148868A
公开(公告)日：1996-06-07
申请号：JP28170894
申请日：1994-11-16
申请人： HITACHI LTD
发明人： MINEMURA TOMOKAZU , YOKOYAMA AKIYOSHI , KINASHI TERUMI
IPC分类号： G06F1/20 , H05K7/20
摘要： PURPOSE: To reduce the noise from a cooling fan without decreasing the cooling capacity by a method wherein a noise insulating member is arranged on an operator side on the front surface of a cooling system at the lower part of the system abutting against the floor surface so that a muffling device may be composed of the soundproof wall of a noise insulating material and the floor surface. CONSTITUTION: Within the data processor arranged on a floor surface 6, a cooling suction hole 11, a high temperature generating part 8 and a cooling fan 2 are arranged on almost horizontal surface. Next, the cooling fan 2 is driven for sucking outside low temperature air to be circulated while becoming high temperature by taking in the heat generated by a high temperature generating part 8 to be exhausted through an exhaust hole 7. At this time, the exhausted air passes through an exhaust path 10 comprising the bottom surface 9 and the floor surface 6. In such a constitution, the noise insulating member 3 is provided on the operator side on the front surface thereby enabling the disagreeable high temperature exhaust flow running to the operator to be avoided also the noise made by the cooling fan 2 and air flow to be reduced.

3. 发明专利

JPH04195410A CONTROLLER FOR CONNECTION/DISCONNECTION OF APPARATUS 失效
公开(公告)号：JPH04195410A
公开(公告)日：1992-07-15
申请号：JP32632890
申请日：1990-11-28
申请人： HITACHI LTD
发明人： YUNO KAZUHARU , MINEMURA TOMOKAZU , NISHIDA TAKEHIKO , SUEOKA MAMORU
IPC分类号： G06F1/26 , G06F3/00 , H04L12/40 , H04M19/00
摘要： PURPOSE:To reduce the power consumption and to improve the operation convenience by providing a variable impedance buffer which is set to a high impedance at the time of connection on disconnection of an apparatus to or from a communication line and is set to a low impedance with the apparatus connected to the communication line. CONSTITUTION:When a power settlement report signal 6 from an I/O device 61 is detected, a control circuit in a connection/disconnection controller 65 connects the signal line of the I/O device 61 to a signal line 60, which is connected to a host computer 1 or another I/O device 71, by a control signal line 63. When a power-off notice signal 5 from the I/O device 61 is detected, the control circuit 62 disconnects the signal line 64 of the I/O device 61 from the signal line 60, which is connected to the host computer 1 or another I/O device 71, by the control signal line 63. Thus, a system consisting apparatus is automatically disconnected from and reconnected to the signal line without bad influence on the other system constituting apparatuses.

4. 发明专利

JP2005168111A Switching power supply 审中-公开
标题翻译：切换电源
公开(公告)号：JP2005168111A
公开(公告)日：2005-06-23
申请号：JP2003400960
申请日：2003-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINEMURA TOMOKAZU
IPC分类号： H02M3/28
摘要： PROBLEM TO BE SOLVED: To provide a switching power supply wherein a dry up phenomenon can be suppressed in a smoothing capacitor of a power supply that is stopped and started on the secondary side like power supplies in compliance with the ATX standard.
SOLUTION: When a secondary-side power supply is stopped, switching of a switching transistor 120 is stopped by a PWM control circuit 121, and further a boosting circuit 115 is stopped. When the voltage of the secondary-side power supply is detected and determined to has fallen below a preset voltage, control is carried out by an operating coil 123 so that the following is implemented: a first relay contact 125 connected between the boosting circuit 115 and the smoothing capacitor 116 is opened; and a second relay contact 118 connected in parallel with the smoothing capacitor 116 together with a discharge resistance 117 is closed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种开关电源，其中在次级侧的电源的平滑电容器中可以抑制干燥现象，如符合ATX标准的电源。解决方案：当次级侧电源停止时，开关晶体管120的切换由PWM控制电路121停止，并且进一步升压电路115停止。当检测到并确定次级侧电源的电压已经下降到低于预设电压时，通过操作线圈123进行控制，从而实现以下功能：第一继电器触点125连接在升压电路115和平滑电容器116打开; 并且与放电电阻117一起与平滑电容器116并联连接的第二继电器触点118闭合。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2001350456A DISPLAY DEVICE 失效
公开(公告)号：JP2001350456A
公开(公告)日：2001-12-21
申请号：JP2000171991
申请日：2000-06-05
申请人： HITACHI LTD
发明人： MINEMURA TOMOKAZU , NISHIKAWA ATSUHIKO
IPC分类号： H04N17/02 , G09G5/00 , G09G5/06 , G09G5/10 , G09G5/34 , H04N9/69
摘要： PROBLEM TO BE SOLVED: To provide a method for easily detecting a gamma characteristic of a display device. SOLUTION: A graphic 1210 consisting of a graphic 1211 and a graphic 1212 is arranged in columns and rows, and a color in which the graphic 1211 is painted out is displayed in one direction with the luminance being changed, and the graphic 1212 is also painted out in the same color and displayed on a screen in the direction perpendicular to the graphic 1211 with the luminance being changed. This display picture is scrolled over plural pieces of displays. When the display device has a small gradient in the gamma characteristic, the boundary between the graphic 1211 and the graphic 1212 becomes obscure, therefore, it is possible to display the gamma characteristic of the display device by a distribution form of a pseudo contour shape of the above display graphics.

6. 发明专利

JPH04264942A INFORMATION PROCESSOR 失效
公开(公告)号：JPH04264942A
公开(公告)日：1992-09-21
申请号：JP2597891
申请日：1991-02-20
申请人： HITACHI LTD
发明人： ONIKI KAZUNORI , MINEMURA TOMOKAZU , SUEOKA MAMORU
IPC分类号： G06F12/14 , G06F21/02 , G06F21/24 , G06K7/00
摘要： PURPOSE:To reduce administrative man-hour such as the re-assignment of a device number due to the fault of a storage means in a manufacturing process in a device required to have the device number instrinsic to the device in the way of hardware from the viewpoint of software security. CONSTITUTION:The title information processing system is characterized as follows. In the device provided with a programmable (burnable off) EPROM 160 as a constituent element in a figure 1, only a device number storage area 180 is incorporated in the programmable EPROM 160 under an unburnt-off state. Then, the device number is written after incorporating the EPROM 160 to the device by providing writing means 120, 130 to execute write-in to the EPROM 160 and a switch 150 to supply voltage required for the write-in and select a writable state. Thus, the administration of the device number having been taken in every process in the past becomes the administration of one time before shipment, and the man-hour can be drastically reduced.

7. 发明专利

JPH03209580A METHOD AND DEVICE FOR DRAWING GRAPHIC 失效
公开(公告)号：JPH03209580A
公开(公告)日：1991-09-12
申请号：JP477290
申请日：1990-01-12
申请人： HITACHI LTD
发明人： GOTO MASAHIRO , NIINO SEIICHI , MINEMURA TOMOKAZU
IPC分类号： G06T11/20 , G06T15/00
摘要： PURPOSE:To shorten the graphic drawing time by evolving the dots directly to a bit map memory when the size of a dot-evolved graphic is smaller than the standard value for decision. CONSTITUTION:A graphic data memory 1 stores the shape of a graphic shown on a display 5 as the graphic data. The size of the graphic shown in the dot number is calculated when the graphic is evolved into a bit map memory 3 as the dot information before the graphic to be displayed is evolved into a dot information storage means (memory 3). Then the calculated size is compared with the reference value for decision. When the former is smaller than the latter, the graphic is written into the memory 3 as a single dot without undergoing the dot evolution using the raster algorithm. Thus the graphic drawing time is shortened.

8. 发明专利

JPH04195269A GRAPHIC DISPLAY DEVICE AND ITS DISPLAY METHOD 失效
公开(公告)号：JPH04195269A
公开(公告)日：1992-07-15
申请号：JP31983090
申请日：1990-11-22
申请人： HITACHI LTD
发明人： MINEMURA TOMOKAZU , SENDA SHUICHI , SUEOKA MAMORU
IPC分类号： G06T11/00
摘要： PURPOSE:To accelerate display speed by dividing a quadrangular area, deciding the presence/absence of intersection with a display area in each divided quadrangular area, and performing clipping processing on only circular graphics in intersecting divided quadrangular areas. CONSTITUTION:A CDP 12 recognizes the area by a coordinate value, and coordinate data is attached on the display area 1 and the quadrangular area 3. The coordinate data is accumulated in a segment buffer 16 by a CPU 10, and the CDP 12 refers to the data. In such a case, it is checked whether or not the quadrangular area 3 is not entirely included in the area 1. When all the quadrangular areas 3 are included in the area 1, no clipping processing is performed on divided circular graphics (1/4 of circle) in the area 3, and all of them are displayed. Since other areas 3 are intersected with the area 1, the clipping processing are performed on them. Thereby, processing time for the graphic including a three-dimensional graphic can be shortened.

9. 发明专利

JPH01209488A DISPLAYING DEVICE WITH TWO-AND THREE-DIMENSIONAL FUNCTIONS 失效
公开(公告)号：JPH01209488A
公开(公告)日：1989-08-23
申请号：JP3276788
申请日：1988-02-17
申请人： HITACHI LTD
发明人： MINEMURA TOMOKAZU , SENDA SHUICHI , NAMATAME TADAO
IPC分类号： G09G5/36 , G06T11/80 , G06T15/40 , G09G1/00 , G09G5/00
摘要： PURPOSE:To immediately recognize a picked objective graphic by storing graphic registration information (picked information) in graphic management information, as well as the pick processing of two-dimensional displayed figures in all or the part of a Z buffer. CONSTITUTION:The title device is provided with a means storing two-dimensional graphics as the result of the processing of a processor 4 in a frame memory 6 when the two-dimensional graphic is displayed, a means storing the graphic registration information of the graphic management information as two-dimensional graphic picked information in all or a part of the Z buffer 7 accompanied by above-mentioned storage corresponding to the address of the images of the frame memory 6 and a means making access to the Z buffer 7, reading the corresponding picked information in a pick area and making it to be the object of the pick processing at the time of pick specifying. Therefore, when two-dimensional display is performed in a three-dimensional display device and the picking processing is performed, the picked objective graphic can be retrieved only by reading the graphic management information stored in the Z buffer 7. Thus, responsiveness can be improved.

10. 发明专利

JPS6294893A GRAPHIC DISPLAY UNIT 失效
公开(公告)号：JPS6294893A
公开(公告)日：1987-05-01
申请号：JP23328385
申请日：1985-10-21
申请人： HITACHI LTD
发明人： MINEMURA TOMOKAZU , HARA HIDEYUKI
IPC分类号： G09G5/36 , G09G1/16 , G09G1/28 , G09G5/02

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