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51. 发明专利

JPH10334477A DISK INFORMATION REPRODUCING DEVICE 失效
公开(公告)号：JPH10334477A
公开(公告)日：1998-12-18
申请号：JP14645397
申请日：1997-06-04
申请人： HITACHI LTD
发明人： SATO HIDEAKI , OGAWA TAKASHI
IPC分类号： G11B21/08 , G11B7/085
摘要： PROBLEM TO BE SOLVED: To provide a disk information reproducing device capable of generating the envelope signal of a high frequency signal at the crossing of a track by a pickup with high accuracy and accurately measuring a crossing number of tracks by a track counting method. SOLUTION: This disk information reproducing device has a track crossing signal generating circuit 6 for generating a track crossing signal (TCR) being changed in synchronism with the track crossing period of a pickup 3 when the pickup 3 has been moved in the radial direction of a disk 1. The track crossing signal generating circuit 6 has a signal density multiplying means 13 for multiplying the signal density of a high frequency signal and generates the track crossing signal (TCR) based on the envelope signal (EVP) of a high density high-frequency signal (DRF) generated by the means 13 and a tracking error signal (TER).

52. 发明专利

JPH06268548A CASE PROVIDED WITH WATER-PROOF FUNCTION AND PORTABLE TELEPHONE SET 失效
公开(公告)号：JPH06268548A
公开(公告)日：1994-09-22
申请号：JP5431593
申请日：1993-03-15
申请人： HITACHI LTD , HITACHI COMMUNICATION SYSTEM
发明人： OTAKE TOSHIKAZU , SAKAGUCHI KENICHI , SATO HIDEAKI , KAMIMURA OSAMU
IPC分类号： H04B1/034 , H04B1/08 , H04B1/38 , H05K5/02 , H05K5/06
摘要： PURPOSE:To attain miniaturization without deteriorating assembly ease performance and sealing performance. CONSTITUTION:A case for a portable telephone set is constituted of an upper case 10 and a lower case 20. The outside of the upper case 10 and the lower case 20 is made of flexible resins 11, 21, and the inner side is made of rigid resins 12, 22. A recessed part 54 is formed to the rigid resin 22 at the end face of the lower case 20. The flexible resin forming the outer side of the upper case is formed up to its end face and inserted to the recessed part 54 of the lower case 20 as a projection 53. The flexible resin 11 forming the projection 53 acts like a seal member.

53. 发明专利

JPH0642597B2 失效
公开(公告)号：JPH0642597B2
公开(公告)日：1994-06-01
申请号：JP20143186
申请日：1986-08-29
申请人： HITACHI LTD
发明人： SATO HIDEAKI , MORIKAWA SHUSUKE , MATSUMOTO SATOSHI
IPC分类号： H05K7/02

54. 发明专利

JPH06132712A PORTABLE TELEPHONE SET PROVIDED WITH DRAWING MECHANISM FOR ANTENNA 失效
公开(公告)号：JPH06132712A
公开(公告)日：1994-05-13
申请号：JP28293092
申请日：1992-10-21
申请人： HITACHI LTD , HITACHI COMMUNICATION SYSTEM
发明人： SATO HIDEAKI , ITAKURA SAKAE , KAMIMURA OSAMU , OTAKE TOSHIKAZU , SAKAGUCHI KENICHI
IPC分类号： H01Q1/08 , H01Q1/10 , H01Q1/24
摘要： PURPOSE:To provide the portable telephone set of a folding system, which is provided with a function that automatically executes an antenna drawing operation at the time of a call by means of a spring driving system by interlocking it with the opening operation of a case. CONSTITUTION:A spring storage case unit 5 where the external end part of a spiral spring 6 is fixed at the base of an antenna 2 is installed at an upper opening/closing case 10, and the internal end part 6a of the spiral spring 6 is fixed to a fixing boss 10a. Thus, the antenna 2 is pressed into the upper opening/closing case 10 and therefore the spring storage case unit 5 rotates, the spiral spring 6 is wound and repulsion force is given. At the same time, a rod stopper 13 operates and the rotary operation of the spring storage case unit 5 is restricted. A lock lever 12 is the stopper when a lower opening/closing case 17 is closed. Thus, the lock lever 12 and the rod stopper 13 interlock by pushing a lock button 11. Then, the antenna 2 is drawn to an external part as soon as the case is opened.

55. 发明专利

JPH0632395B2 失效
公开(公告)号：JPH0632395B2
公开(公告)日：1994-04-27
申请号：JP12787186
申请日：1986-06-04
申请人： HITACHI LTD
发明人： MATSUMOTO SATOSHI , SATO HIDEAKI
IPC分类号： H05K7/00 , H05K5/03

56. 发明专利

JPH05206937A INTERFACE HOLDING SYSTEM 失效
公开(公告)号：JPH05206937A
公开(公告)日：1993-08-13
申请号：JP1402192
申请日：1992-01-29
申请人： HITACHI LTD
发明人： MATSUBARA OSAMU , SUDO SHIGEYUKI , KOSUGE WATARU , ITO FUMITAKA , SATO HIDEAKI
IPC分类号： H04B7/26
摘要： PURPOSE:To obtain an interface holding system in a radio portable unit or a slave unit where a call is not required to be terminated even if a battery is exchanged while an operator is in the middle of a call state. CONSTITUTION:A holding registration means 134 is provided for the portable unit. The means sets holding time in the timer 124 of a base, station when a line is to be held for exchanging the battery. At that time, CH information is saved in the CH state saving memory 135 of the portable unit, and a different power source backs up a system. The base station holds the line during that time by setting the timer, and the message of a holding message 125 and melody are transmitted to a call opposite party. The holding registration means 134 can keep securing channels to the interfaces of the base station and the portable unit, and the call can be executed immediately after holding is released.

57. 发明专利

JPH0581971A GAS INSULATED DISCONNECTOR 失效
公开(公告)号：JPH0581971A
公开(公告)日：1993-04-02
申请号：JP26816991
申请日：1991-09-21
申请人： HITACHI LTD
发明人： SATO HIDEAKI , YAMAOKA YUKINORI , YAMAGIWA TOKIO
IPC分类号： H01H33/42 , H02B13/02
摘要： PURPOSE:To provide a gas insulated disconnector in which potential distribution is improved to improve dielectric pressure resistance. CONSTITUTION:Bus conductors 1u, 1v, 1w of three phase are provided in a common vessel 5 so that each conductor is situated on each apexes of an isosceles triangle, and the sliding member of a mechanism part for transmitting opening and closing operating force to needles 2u, 2v, 2w in a ground potential is provided on the base side of the isosceles triangle. On the bus conductor side of the sliding member 3, insulating materials 4u, 4v, 4w are provided in almost equal positions from the sliding member 3, respectively, and the needles 2u, 2v, 2w of the respective phases operated concentrically to the bus conductors 1u, 1v, 1w are connected to the sliding member 3 through the insulating materials 4u, 4v, 4w.

58. 发明专利

JPH04352073A GRAPHIC PROCESSING SYSTEM 失效
公开(公告)号：JPH04352073A
公开(公告)日：1992-12-07
申请号：JP12612891
申请日：1991-05-29
申请人： HITACHI LTD
发明人： HAYASHI YUKIMI , SATO HIDEAKI , IIZUKA YOJI , NONAKA MASAHIKO , NOMOTO MAMORU
IPC分类号： G06F17/50 , G06T1/00
摘要： PURPOSE:To obtain a graphic processing system for executing graphic checking processing and graphic retrieving processing excellent in data exchange between unspecified different systems. CONSTITUTION:The graphic processing system is provided with a CAD/IGES conversion part 10 for converting a graphic (CAD data 5a) into a data format (IGES format) to be used for data exchange, a graphic simplifying part 11 for converting the graphic converted into the IGES format into a simple graphic consisting of a rectangle or a circle, a diameter/diagonal length extracting part 12 for extracting the diameter of the converted circle or the diagonal length of the converted rectangle, a collating part 13 for collating the extracted diamter or diagonal length with the contents of a dictionary 5b storing inherent information corresponding to each graphic, a retrieved result output part 14 for outputting the inherent information concerned and the graphic is checked only by the IGES format data. The graphic is also retrieved only from the IGES format data.

59. 发明专利

JPH0334396A COOLING STRUCTURE OF ELECTRONIC COMPONENT 失效
公开(公告)号：JPH0334396A
公开(公告)日：1991-02-14
申请号：JP13129890
申请日：1990-05-23
申请人： HITACHI LTD
发明人： MATSUMOTO SATOSHI , SATO HIDEAKI
IPC分类号： H05K7/20
摘要： PURPOSE:To improve an electronic component in cooling efficiency by a method wherein a convection guide plate which naturally cools the electronic component and a fan which forcibly cools the part of the equipment component of high heat release value and is provided onto the convection guide plate are provided. CONSTITUTION:To cool a printed wiring board 2 in each shelf 1, a guide wiring board 2 whose two ends are tilted upward are provided to a gap formed between the shelves 1 to guide cooling air so as to make it flow along the upside of the guide wiring board 2 toward the base of the shelf 1. To forcibly cool the printed wiring board 2 which locally releases a large quantity of heat, a fan 6 is installed on a convection guide plate 4 facing toward the position of the printed wiring board 2 which releases a large quantity of heat. A wire material 7a from a power source and a wire material 7b from the fan 6 are connected to each other through a connector 8 fitted to the above bent part 5, whereby the fan 6 is improved in workability and easily mounted or dismounted.

60. 发明专利

JPH02161797A CONVECTION INDUCTION PLATE STRUCTURE 失效
公开(公告)号：JPH02161797A
公开(公告)日：1990-06-21
申请号：JP29231489
申请日：1989-11-13
申请人： HITACHI LTD
发明人： MATSUMOTO SATOSHI , SATO HIDEAKI
IPC分类号： H05K7/20
摘要： PURPOSE:To prevent parts or tools which are dropped by mistake from entering without preventing heat dissipation of a unit by blocking a gap for heat dissipation of a convection induction plate and the unit and then drilling a hole of a proper size for dissipating heat. CONSTITUTION:Air enters from an entrance 4a, cools a circuit parts of a package 2 mounted to a unit 1, and then exits to the outside from an exit 4b. A blocking plate 5 is mounted at a height which is nearly the same as a gap H of the unit 1 which is placed at up and down positions at the air exit 4b of a convection induction plate 3. Then, a hole for dissipating heat 7 of a size for preventing falling objects such as a screw from entering is provided at a blocking plate. Thus, parts or tools which are dropped by mistake will not enter and heat dissipation of the unit functions properly.

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