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51. 发明专利

JPS5512513A MAGNETIC HEAD 失效
公开(公告)号：JPS5512513A
公开(公告)日：1980-01-29
申请号：JP8323478
申请日：1978-07-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAKANISHI TAKUJI , YANAGISAWA KEIICHI , KITA TOSHIROU , KOGURE KENJI
IPC分类号： G11B5/133 , G11B5/187
摘要： PURPOSE:To avoid the missing of track ridgelines, by providing the thin film added layer of non-magnetic material at least over the both side surfaces adjacent to the ridgelines of the track surface of the magnetic head formed with ferrite material. CONSTITUTION:Around the ridgeline of the side surface adjacent to each ridgeline 13 from each ridgeline 13 between the track surface 11 and the both side surfaces 12 at least, the non-magnetic body thin film 19 consisting of metal such as Cr and non-metal such as SiO2 is attached with the thin film technology such as sputtering and evaporation. Further, the non-metal body thin film layer 19 can be attached to the both side surfaces of the both side slider surface 14 and also on the entire surface other than the track surface 11 and the slider surface 14. With this constitution, even if the ridgeline of the track surface collides with the notches on the magnetic medium surface at the contact start and stop and at seeking, missing of ridgelines can be avoided.

52. 发明专利

JPS54102111A MAGNETIC HEAD 失效
公开(公告)号：JPS54102111A
公开(公告)日：1979-08-11
申请号：JP808978
申请日：1978-01-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAKANISHI TAKUJI , KOGURE KENJI , KITA TOSHIROU
IPC分类号： G11B21/12 , G11B5/54
摘要： PURPOSE:To prevent the suction of a slider at the stopping by providing a loading spring formed with the bent part which touches ON and OFF the slider to the recording medium surface by turning the slider mounted to an arm via gimbal. CONSTITUTION:A slider 2 is mounted to an arm 4 via gimbal 1. A loading spring 3 is mounted to the gimbal 1 with its end being turnable to the gimbal 1 near the slider 2 and the neighborhood of its root being turnable to the gimbal 1 near the arm 4 by a mounting member 7. A root bent part 5 and end bent part 6 are formed. Hence, the slider 2 may be touched ON under a fixed load to a recording medium 9 by turning the root bent part 5 of the loading spring 6 and the slider 2 may be detached from the recording medium 8 by returning the root bent part 5 to the original and these make possible prevention of suction phenomena.

53. 发明专利

JPS5357016A ADJUSTMENT OF FLOATING HEAD 失效
公开(公告)号：JPS5357016A
公开(公告)日：1978-05-24
申请号：JP13123876
申请日：1976-11-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , KOGURE KENJI
IPC分类号： G11B5/60 , G11B17/32 , G11B21/21
摘要： PURPOSE:To obtain a stable floating spacing without increasing the working precision by reducing the thickness of a load spring through an electrolytic method while measuring the floating spacing of a floating head.

54. 发明专利

JPH09133748A SIMPLIFIED RADAR DEVICE 失效
公开(公告)号：JPH09133748A
公开(公告)日：1997-05-20
申请号：JP28844795
申请日：1995-11-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI HIDETO , OCHIAI YOSHIHIRO , SUZUKI SATOSHI , SONEHARA NOBORU , KUWANO HIROKI , KOGURE KENJI
IPC分类号： G01C3/06 , G01S3/32 , G01S11/02 , G01S13/10 , G01S13/46 , G01S19/14 , G01W1/00
摘要： PROBLEM TO BE SOLVED: To provide a simplified radar device, with a transmitter eliminated. SOLUTION: A radar pulse receiving part 102 aligns a radar pulse receiving antenna 11 with the direction of the transmission and receiving antenna of another radar device, on the basis of positional information transmitted from a positional information setting part 101, thereby receiving a radiated radar pulse. In addition, a radar echo receiving part 103A fixes a radar echo receiving antenna 12 in a direction opposite to the transmission and receiving antenna viewed from a receiver, on the basis of positional information transmitted from the positional information setting part 101, thereby receiving a radar echo. A radar pulse detection part 201 outputs a timing signal when the intensity of a received pulse becomes maximum. Furthermore, a cycle period extraction part 202 detects the cycle period of the received radar pulse, and a radar echo analysis part 203 calculates the distance of the radar echo, on the basis of the intensity of the radar echo, a time elapsed from the receipt of the timing signal to the receipt of the radar echo within the cycle period, and a luminous flux.

55. 发明专利

JPH02105037A DUST GENERATOR 失效
公开(公告)号：JPH02105037A
公开(公告)日：1990-04-17
申请号：JP25737188
申请日：1988-10-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： AMANO NOBUO , TAMARU NAOYUKI , KOGURE KENJI
IPC分类号： G01M99/00 , G01N1/28
摘要： PURPOSE:To keep the dust quantity in a atmosphere constant with use of a small-sized and simple device by measuring dust by a dust quantity measuring instrument through a dust suction use pipe with regard to a device used for a dust resisting test of a precision instrument, etc., and controlling a dust generator by a dust controller by using its measured value. CONSTITUTION:Dust 1 is allowed to pass through a dust suction pipe 2, and the dust quantity is measured by a dust quantity measuring instrument 3. Subsequently, a measured value of the dust quantity measured by this measuring instrument 3 is sent to a dust quantity controller 4, and when the measured value of the dust quantity is below an indicated scale which is set in advance by the controller 4, dust is generated by operating a relay 13 and turning ON the input of a dust generation use exciter 14. On the other hand, when the measured value of the dust quantity is above the indicated scale which is set in advance, the input of the dust generation use exciter 14 is turned off by operating the relay 13, and the dust quantity in an atmosphere is kept constant with use of a small-sized and simple device.

56. 发明专利

JPH01245450A COMPOSITE HEAD, MEMORY AND MEMORY MEDIUM 失效
公开(公告)号：JPH01245450A
公开(公告)日：1989-09-29
申请号：JP7125388
申请日：1988-03-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： UKITA HIROO , KOSHIMOTO YASUHIRO , MIZUKAMI MAKOTO , TAKANAMI SHUICHI , TOSHIMA TOMOYUKI , SATO TOSHITAKE , KOGURE KENJI
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
摘要： PURPOSE:To obtain a memory having both the property of high speed and that of large capacity by loading an optical head composed of a semiconductor laser and a light detector and a magnetic head composed of a magnetic circuit having a winding on a slider to float and travel on a memory medium. CONSTITUTION:An optical head 8 composed of a semiconductor laser 10 and a light detector 11 and a magnetic head 9 composed of the magnetic circuit having a winding 19 are loaded. Namely, information is recorded and/or reproduced with the two types of heads 8 and 9 which have different operational principles and have no mutual intervention of signals. Further, the track position signal of a recording medium is detected by the optical head 8 in a composite head 1, magnetic recording and/or reproducing for the recording medium are/is executed by the magnetic head 9, track recording density is improved by the small beam of the optical head 8, and high-density recording is executed by the magnetic head 9. Thus, the property of the high speed and that of the large capacity of the memory can be attained simultaneously.

57. 发明专利

JPH01134775A FLEXIBLE DISK DEVICE 失效
公开(公告)号：JPH01134775A
公开(公告)日：1989-05-26
申请号：JP29068287
申请日：1987-11-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HOSAKA HIROSHI , TAMARU NAOYUKI , HARA SHINJI , KOGURE KENJI
IPC分类号： G11B23/033
摘要： PURPOSE:To give a constant pressure unconcerned with the warpage of a cartridge to a flexible disk and to obtain stable recording and reproducing characteristics by incorporating one part of a thrust bearing in a device main body. CONSTITUTION:A thrust bearing 21a is formed to the inner surface of an upper board 21 of a cartridge 2, and further, a thrust bearing 61 is formed also to the inner surface of a thrust board 6 fitted to an oscillating shaft 9. Thus, an air pressure due to the thrust bearing 21a in the cartridge 2 is changed, but the thrust bearing 61 pressure of the thrust board 6 is always maintained constant. Namely, it is because the height of the thrust board 6 is hardly changed and, simultaneously, the pressure is separated from the pressure on the cartridge 2 in the view of an aerodynamics by a void 13 between the cartridge 2 and thrust board 6, and thus, the recording and reproducing characteristics are stabilized.

58. 发明专利

JPS62184685A MAGNETIC DISC DEVICE 失效
公开(公告)号：JPS62184685A
公开(公告)日：1987-08-13
申请号：JP2584686
申请日：1986-02-10
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD
发明人： KOGURE KENJI , OGUCHI SHIGEMITSU , SATO TOSHITAKE , TAKANAMI SHUICHI , YOSHIZAWA TADASHI , SATO TAKAKORE
IPC分类号： G11B25/04 , G11B33/14
摘要： PURPOSE:To easily replace a gas adsorbing agent without deteriorating the reliability by containing the gas adsorbing agent to the atmosphere side in a flow path leading to a breathing hole and a breathing filter provided to an enclosed structure. CONSTITUTION:A containing box 107 incorporating the gas adsorbing agent 106 such as activated carbon is provided to the outside of the breathing hole 100, a high performance filter 101 and a pre-filter 102, and a flow path leading to the breathing hole 100 and the high performance filter 101 is constituted of a vent hole 108 formed to the box 107 to enter the adsorbing agent 106 into the flow path. The adsorbing agent 106 can be replaced while a cover 2 of the magnetic disk device is coupled to the base 1. Even if the containing box 107 is removed, since the high performance filter 101 acts onto the breathing hole 100, the replacement of the gas adsorbing agent 106 is executed not in a cleaned environment such as a complete clean room and it is executed easily even at a location where the magnetic disc device is placed.

59. 发明专利

JPS6228505B2 失效
公开(公告)号：JPS6228505B2
公开(公告)日：1987-06-20
申请号：JP5996580
申请日：1980-05-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MITSUYA YASUNAGA , KOGURE KENJI , OGUCHI SHIGEMITSU
IPC分类号： G11B21/02 , G11B5/54

60. 发明专利

JPS6258151A GAS PURITY MEASURING DEVICE 失效
公开(公告)号：JPS6258151A
公开(公告)日：1987-03-13
申请号：JP19729085
申请日：1985-09-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YASUDA KYOSUKE , HOSHITANI KUNIO , FUKUI SHIGEHISA , KOGURE KENJI
IPC分类号： G01N27/04 , G01N27/18
摘要： PURPOSE:To reduce a measuring error due to circumferential temp. and to attain to enhance sensitivity, by changing the voltage of a bridge circuit and making the voltage applied to a zero point compensating thermistor constant. CONSTITUTION:The voltage Va at the node between a detection thermistor 1 and a zero point compensating thermistor 2 is fed back to a power source 10. The power source 10 controls the voltage Vs at both terminals of a bridge circuit so as to make the voltage Va constant. This voltage control is performed by detecting the voltage at the node between the thermistors 1, 2 to compare the same with freely adjustable reference voltage and controlling output voltage so as to bring the difference between both voltages to zero. That is, a variable resistor is controlled so that VOUT comes to zero in such a state that both thermistors 1, 2 are placed in air. Next, the thermistor 1 is placed, for example, in a 100% helium atmosphere to perform control so that VOUT comes to predetermined voltage. By this method, a measuring error due to circumferential temp. is reduced and sensitivity can be enhanced.

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