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81. 发明专利

JP2000243640A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000243640A
公开(公告)日：2000-09-08
申请号：JP36220999
申请日：1999-12-21
申请人： HITACHI LTD
发明人： SATO TAKANORI , TAKEUCHI RYOZO
IPC分类号： H01F38/12 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine which is superior in electrical insulating property, reliability and durability. SOLUTION: In an ignition coil 10 for an internal combustion engine, the sectional shape in the axial direction of an end portion of a center core 11 is tapered from the vicinity of a central part of the center core 11 and made smaller than the sectional area of the central part, so that the insulation distance between a secondary soil 15 and the vicinity of the end portion of the center core 11, which make a large potential difference part, is increased. Thereby the discharge energy of the ignition coil is ensured, and an internal combustion engine and the ignition coil for the internal combustion engine which are satisfactory in electrical insulating property can be provided.

82. 发明专利

JP2000058314A HIGH TEMPERATURE CONDUCTIVE COIL AND INSULATING SHEET AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000058314A
公开(公告)日：2000-02-25
申请号：JP21929298
申请日：1998-08-03
申请人： HITACHI LTD
发明人： OHATA KOJI , HIGASHIMURA YUTAKA , TAKEUCHI RYOZO
IPC分类号： H01F27/28 , H01F5/06 , H02K3/32
摘要： PROBLEM TO BE SOLVED: To improve the heat dissipation of an insulating layer, while maintaining charging deterioration life characteristics of high pressure coil. SOLUTION: Scale-shaped high temperature conductive materials 4, whose aspect ratio (the mean grain diameter/thickness of a plane) is 10 or more constituted of materials with thermal conductivity higher than that of a mica 3, are contained in a coil insulating layer. The high temperature conductive materials, whose thermal conductivity is higher than that of the mica, are packed in the insulating layer so that heat dissipation can be more improved than a conventional coil. Also, the high temperature conductive materials are shaped like scales so that tree deterioration can be suppressed, and charging deterioration life characteristics which are equivalent to those of the conventional coil can be obtained.

83. 发明专利

JP2000049024A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE AND ITS MANUFACTURE 失效
公开(公告)号：JP2000049024A
公开(公告)日：2000-02-18
申请号：JP21682698
申请日：1998-07-31
申请人： HITACHI LTD
发明人： SATO TAKANORI , TAKEUCHI RYOZO
IPC分类号： C08L63/00 , H01F27/32 , H01F38/12 , H01F41/12
摘要： PROBLEM TO BE SOLVED: To obtain an ignition coil for internal combustion engine having high electric insulating ability. SOLUTION: An ignition coil for internal combustion engine is of an inner secondary coil type, in which a secondary coil bobbin 14 is positioned in a primary coil bobbin 16, and a center core 11 is put in the secondary coil bobbin 14. The surface of the center core 11 is coated with a high elasticity high- polymer insulating resin 131. The resin 131 is also filled in the clearance between the laminated cores 111 of the center core 11. Between the center core 11 and a secondary coil bobbin 14, two layers of the high elasticity high-polymer insulating resin 131 and a coil insulating resin 20 are formed.

84. 发明专利

JPH08205308A CURRENT COLLECTOR FOR CAR 失效
公开(公告)号：JPH08205308A
公开(公告)日：1996-08-09
申请号：JP1127095
申请日：1995-01-27
申请人： HITACHI LTD
发明人： HAGIWARA SHUYA , TAKEUCHI RYOZO , KAMATA YUZURU , KAKEHI YUTAKA , HARA KUNIYOSHI
IPC分类号： B61D49/00 , B60L5/00 , B60L5/22
摘要： PURPOSE: To provide a current collector for a car, which is proper to a light- weight high-speed railway rolling stock having excellent controllability and responsibility and superior arc resistance and noises from which are lowered. CONSTITUTION: A current collector 20 uses a current collecting body 22 holding a contact strip 21 being brought into contact with a stringing 1 and collecting a current and a conductive mechanism including a support insulator 30 supporting the current collecting body 22 and a cable head 50 as main structures, and is composed of a storage dome 4, etc. The current collecting body 22 is controlled vertically together with the support insulator 30 by an actuator so that the contact force of the stringing 1 and the contact strip 21 reaches a proper value at all times. An arc-resistant protecting plate 24 is arranged around the contact strip 21, and heat-resistant high-resistance arc transfer barrier plates 25a, 25b are mounted at end sections in the elongation direction of the stringing 1, thus improving controllability by lightening, then preventing the damage of the current collecting body due to the transfer of an arc between the stringing and the contact strip and a high-temperature molten scattered article with the arc.

85. 发明专利

JP2512052B2 失效
公开(公告)号：JP2512052B2
公开(公告)日：1996-07-03
申请号：JP1698588
申请日：1988-01-29
申请人： HITACHI LTD
发明人： AMAKAWA HIROYUKI , TAKEUCHI RYOZO
IPC分类号： G06F19/00 , G06T13/00 , G06T13/80 , G06F17/00

86. 发明专利

JPH0721408A ILLUMINANCE CALCULATING METHOD FOR COMPUTER GRAPHICS AND DISPLAY DEVICE 失效
公开(公告)号：JPH0721408A
公开(公告)日：1995-01-24
申请号：JP15168093
申请日：1993-06-23
申请人： HITACHI LTD
发明人： SATO YOSHITO , USAMI YOSHIAKI , TAKEUCHI RYOZO
IPC分类号： G06T15/80 , G06T15/50
摘要： PURPOSE:To reduce the projection frequency of an object projected by Z buffer processing and to quickly calculate the illumination of skylight by finding out the illumination of skylight in each cube formed by a voxcel dividing means. CONSTITUTION:A control part 100 sends object data from a data part 4 to a voxcel dividing processing part 5, which executes voxcel division of object space and sends its voxcel division result to a voxcel face illumination calculating processing part 6. The control part 100 sends data in each voxcel face from the processing part 6 to a Z buffer processing part 1. The processing part 1 calculates projection to a voxcel face and transfers its calculated result to the processing part 6. After completing said processing, the same processing is repeated only by necessary frequency based upon command processing data. A voxcel face illumination synthesizing part 7 executes voxcel face illumination synthetic processing based upon previously found voxcel face illumination and sends its processing result to a shading processing part 2 as data C and a formed picture is displayed on a display device 3.

87. 发明专利

JPH06348815A METHOD FOR SETTING THREE-DIMENSIONAL MODEL OF BUILDING ASPECT IN CG SYSTEM 失效
公开(公告)号：JPH06348815A
公开(公告)日：1994-12-22
申请号：JP13484093
申请日：1993-06-04
申请人： HITACHI LTD
发明人： USAMI YOSHIAKI , TAKEUCHI RYOZO
IPC分类号： G06F17/50 , G06F15/62 , G06F15/60
摘要： PURPOSE:To provide a method to easily set the three-dimensional model of a building to generate the image of an aspect of the area where the buildings stand close together, such as a city area or a factory area, by a three- dimensional computer graphic. CONSTITUTION:A first photograph which photographs the building 3 from an upper side and a second photograph which photographs the side plane of the building 3 are prepared. Firstly, the position data of the building 3 and the external size of roof data are inputted by using the first photograph, and height data decided in advance is attached on them, thereby, a temporal three- dimensional model is set. Secondly, a CG image 11 is generated and displayed by the same camera parameter as that of the second photograph after applying rendering to the temporal three-dimensional model. The height data is decided by correcting the height data of the temporal three-dimensional model so as to conform the CG image to a horizontal photograph.

88. 发明专利

JPH06325152A METHOD AND DEVICE FOR ARRANGING GRAPHIC BY THREE-DIMENSIONAL COMPUTER GRAPHICS 失效
公开(公告)号：JPH06325152A
公开(公告)日：1994-11-25
申请号：JP10901493
申请日：1993-05-11
申请人： HITACHI LTD
发明人： UNUMA MUNETOSHI , TAKEUCHI RYOZO
IPC分类号： G06F15/62
摘要： PURPOSE:To easily arrange many graphics in a determined area of a graphic by arranging a graphic in a closed area at a position based upon the probability density in the closed area. CONSTITUTION:An input device 120 inputs the graphics to be arranged in the closed area, and coordinate values and density in the closed area, a circumscribed rectangle generating device 121 generates the circumscribed rectangle from the closed area, and a random number generating device 122 generates two-dimensional random numbers in the circumscribed rectangle. An inside/ outside decision device 128 for the closed area decides whether the generated random numbers are inside or outside the closed area and inputs data in the area to a graphic arranging device 126. Further, a depth information storage device 125 stores distances to the graphics projected on a screen, pixel by pixel. Then the graphic arranging device 126 arranges the graphics in three dimensions by referring to height information corresponding to two-dimensional position information for arranging the graphics in the depth information storage device 125, thereby displaying the respective graphics as three-dimensional computer graphics by using a display device 127.

89. 发明专利

JPH06251126A IMAGE SYNTHESIZING METHOD 失效
公开(公告)号：JPH06251126A
公开(公告)日：1994-09-09
申请号：JP3685093
申请日：1993-02-25
申请人： HITACHI LTD
发明人： USAMI YOSHIAKI , TAKEUCHI RYOZO
IPC分类号： G06F3/153 , G06T15/00 , G06T17/05 , G06T19/00 , G06F15/62 , G06F15/72
摘要： PURPOSE:To easily integrate a texture of a side photograph into a texture of an aerial photograph by allowing positions of the aerial photograph and the side photograph to correspond to each other in a matching processing of a camera parameter, and executing a matching processing of the textures at the time of incorporating the side photograph into the aerial photograph. CONSTITUTION:It is assumed that mesh data 2 and ridge line data 3 are derived in advance by aerial surveying based on an aerial photograph. Also, it is assumed that an aerial texture 10 is data in which color information is arrayed, such an aerial texture 10 is subjected to mapping as a texture on a topographical shape, and a topographical model is generated beforehand. In such a state, first of all, in a matching processing of camera parameters of a photographing direction, a photographing position, etc., positions of the aerial photograph and the side photograph are allowed to correspond to each other. Subsequently, in a matching processing of the texture, an optimal position at the time of integrating the side photograph into the texture 10 of the aerial photograph is derived, and an integration processing is executed.

90. 发明专利

JPH06110999A CONTROL METHOD FOR MOBILE OBJECT 失效
公开(公告)号：JPH06110999A
公开(公告)日：1994-04-22
申请号：JP26108092
申请日：1992-09-30
申请人： HITACHI LTD
发明人： UNUMA MUNETOSHI , TAKEUCHI RYOZO
IPC分类号： G06T13/00 , G06T13/20 , G06T13/80 , G06F15/62
摘要： PURPOSE:To provide a method for expressing the movement of an object by a simple instruction relating to a video expression method. CONSTITUTION:At the time of moving the object to a destination, virtual force is generated 11 in a destination direction, the virtual force is forced on the mobile object 14 and the mobile object 14 is moved by the direction control 12 of the object and the movement 13 of the object. Since the movement of the object can be expressed just by instructing the destination of the object, the movement of the object can be expressed by the simple instruction.

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