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41. 发明专利

JPH0587056A GAS COMPRESSOR 失效
公开(公告)号：JPH0587056A
公开(公告)日：1993-04-06
申请号：JP24611091
申请日：1991-09-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , HOSHITANI KUNIO , NISHIDA YASUHIDE
IPC分类号： F04B45/047 , F04B45/04
摘要： PURPOSE:To provide a gas compressor which has no leak due to compression and can prevent oil mist from coming in compressed gas. CONSTITUTION:The inside of a rigid body 1 is hermetically partitioned into an operating chamber 3 and a compression chamber 4 by a diaphragm 2 provided for the wide cross section side of the rigid body 1. The inside of the operating chamber 3 is filled with operating fluid 7, and an inflow valve 5 and a outflow valve 6 for gas to flow in and out, are provided for the wall section of the compression chamber 4 faced to the diaphragm 2. A fluid pump is made up of an electromagnet 10 and of magnetic fluid 11, magnetic fluid 11 is disposed in a space enclosed by a tapered section 8b connected to the gap 8a of a magnetic pole 8. And when a coil 9 is energized, magnetic fluid 11 is sucked in the gap 8a by the intensive magnetic field of the gap 8a so as to be moved, and working fluid 7 in the gap 8a is pushed out to the operating chamber 3 side, so that the diaphragm 2 is pressed so as to be deformed. As a result, the volume of the compression chamber 4 is reduced, so that compressed gas pushes and opens the outflow valve so as to be led to the outside of the compression chamber 4.

42. 发明专利

JPH046639A OPTICAL DISK 失效
公开(公告)号：JPH046639A
公开(公告)日：1992-01-10
申请号：JP10712090
申请日：1990-04-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIDA YASUHIDE , TAKEDA RITSU , IWAZU SHIGETARO
IPC分类号： G11B7/24 , G11B7/00 , G11B7/004
摘要： PURPOSE:To improve a track density without changing the lens and laser of an optical disk memory device by providing a difference in height by as much as the wavelength of 1/4 the laser wavelength and neighbouring value for reproducing or the approximate value thereof on the recording surfaces of adjacent two tracks on both sides of one track. CONSTITUTION:The adjacent tracks TR(n-1) (n+1) are also irradiated with the laser beam LSR and the reflected light ray based thereon are generated if the diameter of the laser beam BM for irradiation is larger than the intertrack spacing of the optical disk 10. The reflected light from the (n-1) track TR of the reflected light rays from the tracks TR(n-1) (n+1) advances in phase nearly by pi/2 and the reflected ligh from the (n+1) track TR delays in phase nearly by pi/2 if the reflected light from the n track is assumed to be a center. The reflected light rays from the (n-1) track TR are, therefore, shifted eventually by nearly pi in phase. These reflected light rays are negated by each other and crosstalks are consequently decreased. The track density is improved in this way without replacing the lens and laser to be used.

43. 发明专利

JPH03160692A HOLOGRAM STORAGE DEVICE 失效
公开(公告)号：JPH03160692A
公开(公告)日：1991-07-10
申请号：JP29744989
申请日：1989-11-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HATAKEYAMA IWAO , MORINAKA AKIRA , NISHIDA YASUHIDE
IPC分类号： G03H1/00 , G11C13/04
摘要： PURPOSE:To preciesly obtain an inexpensive hologram at high speed by arbitrarily changing the angle of reference light with respect to signal light and using a light deflector and an elliptic reflector for intersecting them, orthogonal. CONSTITUTION:A light beam 42 emitted from a laser 41 enters a deflector 46 on the focus of the oval reflector 45 and it is divided into a light beam 43 which advances straight and a polarized beam 44. The light beam 44 is reflected on the surface of the oval reflector 45, passes through a volume hologram storage medium 410 placed on the other focus in spite of a polarized angle and turns into reference light. On the other hand, the straight advancing beam 43 turns into signal light through a shutter 412, a lens 47 for beam expander and a space modulator 49, is converged on the medium 410 on a lens 48 and it is spatially intersect with reference light. Then, it is interfered and the hologram is recorded. Signal light is reproduced by closing the optical shutter 412 and projecting the polarized light 44 on the medium 410 as reproduced light.

44. 发明专利

JPH02156180A MAGNETIZATION OBSERVING APPARATUS 失效
公开(公告)号：JPH02156180A
公开(公告)日：1990-06-15
申请号：JP30988988
申请日：1988-12-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , KISHIGAMI JUNICHI , NISHIDA YASUHIDE , FUKUZAWA KENJI
IPC分类号： G01R33/032 , G01R33/12 , G02B27/28
摘要： PURPOSE:To make it possible to obtain an image information through an image sensing element on an image forming plane for reflected light passing through an objective lens by projecting linearly polarized light from one corner of the objective lens. CONSTITUTION:Light from a light source 1 is linearly polarized through a polarizer 10. The light converges into a beam through a condenser lens 2. Then, the beam is inputted into one corner of an objective lens 11 through a half-fixed reflecting mirror 3 in a mirror tube 4. The incident light through the lens 11 irradiates the surface of a specimen 41 and the reflected light returns into the mirror tube 4 again through the lens 11. The polarized plane of the returned light is slightly changed by the effect of the magnetization of the specimen 41. Therefore, an analyzer 5 is shifted by an angle corresponding to the rotation of the polarized plane from a cross Nicol state. Thus only the rotated component of the polarized plane can be taken out. The image is observed on an image sensing element 31 through an eyepiece lens 21 or an image forming lens 23. An image sensing tube or a solid-state element is arranged for the element. The image information can be obtained as an electric signal by using a high sensitivity image detecting element.

45. 发明专利

JPH0233178A OPTICAL STORAGE DEVICE 失效
公开(公告)号：JPH0233178A
公开(公告)日：1990-02-02
申请号：JP18168788
申请日：1988-07-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIDA YASUHIDE , KOSHIMOTO YASUHIRO , NONAKA KOTARO , YAGI IKUTAKE
IPC分类号： G03H1/04 , G11B7/125
摘要： PURPOSE:To check crosstalk without providing a non-recording area by splitting a reference light beam into plural beams whose required angles are different, selecting the beam by a light shutter and radiating it with object light so that hologram can be recorded. CONSTITUTION:The collimated beam of laser from a laser element 31 is splitted into two beams by a beam splitter 33, one of which passes a beam splitter 34, a beam expander 37, a space light modulator 38 and a collimator lens 39 to become the object light 47. The other splitted beam passes the light shutter 36 and the lens 39 to become a 1st reference light beam. Another beam splitted by the splitter 34 passes a shutter 44 to become a 2nd reference light beam 46 in the same way. As for these light beams 45 and 46, the angles made by the line of a center axis projected to a recording medium with the center axis of a track on the recording medium are different values. One of the beams is selected by a control circuit 49 and the shutters 36 and 37 and the hologram can be recorded by using the different reference light beams every adjacent tracks. As a result, the crosstalk between the tracks can be checked without providing the non-recording area.

46. 发明专利

JPH01271788A STORAGE DEVICE 失效
公开(公告)号：JPH01271788A
公开(公告)日：1989-10-30
申请号：JP10022188
申请日：1988-04-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIDA YASUHIDE , KOSHIMOTO YASUHIRO , ISHII KATSUNORI , KATO TADASHI
IPC分类号： G02F1/01 , G03H1/16 , G11C13/04
摘要： PURPOSE:To improve the storage density by using a spatial optical modulator which has opening/closing element arrayed in two dimensions without any disconnection and placing opening/closing elements adjoining to a specific opening/ closing element in a transmission state when the specific opening/closing element is set in the transmission state. CONSTITUTION:Only four of, for example, nine opening/closing elements 14-1, 14-3, 14-7, and 14-9 are put in operation while 'transmission' and 'nontransmission' are allowed to correspond to pieces of digital information '1' and '0'. Thus, when the four opening/closing elements are operated in 'transmission' mode, three opening/closing elements of other five opening/closing elements which adjoin to each opening/closing element vertically, horizontally, and slantingly are also put in operation at the same time. Thus, the spatial optical modulator 4 which has opening/closing elements 14 arrayed in two dimensions without any break is used and when specific opening/closing elements 14 are put in the transmission state, its adjacent opening/closing elements 14 are also put in the transmission state at the same time to improve the storage density.

47. 发明专利

JPH01204249A MAGNETO-OPTICAL RECORDING HEAD 失效
公开(公告)号：JPH01204249A
公开(公告)日：1989-08-16
申请号：JP2573088
申请日：1988-02-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , UKITA HIROO , NISHIDA YASUHIDE , YAMAMOTO MANABU
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
摘要： PURPOSE:To attain high speed thermomagnetic recording by using a flat coil as a magnet to impress a magnetic field in the film thickness direction of a medium and using this flat coil also as a Fresnel ring band to condense parallel rays on one point. CONSTITUTION:A magneto-optical recording head is composed of an objective lens part 1 which unites an objective lens 6 and a focus tracking coil and a substrate part 2, etc., to load a light source, a photo-detecting element and a spectral optical system. The objective lens 6 is composed of a transparent substrate 11, a lens supporting part 12 and a flat coil 21 to be constituted of a superconducting material. The flat coil 21 has special arrangement and structure to be used also as the optical system and the coil 21 is composed of the plural ring bands to be arranged in a concentric circle shape. Then, the respective ring bands are set so that a radius and a line width can be in the shape of the Fresnel ring band. Thus, since an optical lens system and a magnet system are merged, light projection and magnetic field impression are executed from a same direction and the generating position of the maximum magnetic field and the focus of the light can be made coincident. Then, the head can be used suitably for high speed seek and high speed recording.

48. 发明专利

JPH01204220A RECORDING AND REPRODUCING SYSTEM 失效
公开(公告)号：JPH01204220A
公开(公告)日：1989-08-16
申请号：JP2713988
申请日：1988-02-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIDA YASUHIDE , KOSHIMOTO YASUHIRO , YAMAMOTO MANABU
IPC分类号： G11B7/00 , G11B7/0065 , G11B7/135
摘要： PURPOSE:To attain high speed recording and reproducing by causing the longitudinal direction of a storage medium to be perpendicular to the scanning direction of an optical storage medium in a rectangular shaped one-dimensional hologram, having a large aspect ratio, and including plural digital information. CONSTITUTION:A digital signal to be stored is inputted to a supersonic optical deflecting system 24 by an input signal processing circuit 31 and an ultrasonic wave is generated from an exciting point 41 and propagated in a 36 direction. Namely, a compression wave (the ultrasonic wave) exists only at a place 37 in the ultrasonic optical deflecting system 24. Accordingly, when a laser light 38 is incoming from a beam splitter 23, the light is deflected and a hologram 35 positions the longitudinal direction to the radius direction of a disk substrate 28. Then, the hologram is recorded to an optical storing medium 29 on the disk substrate 28. Thus, since the information can be collected, recorded and reproduced in a short time, the recording and reproducing of the digital information can be executed at an extremely high speed.

49. 发明专利

JPS5913094B2 JPS5913094B2 - 失效
公开(公告)号：JPS5913094B2
公开(公告)日：1984-03-27
申请号：JP16687281
申请日：1981-10-19
申请人： Nippon Telegraph & Telephone
发明人： ONO KYOSUKE , NISHIDA YASUHIDE
IPC分类号： G11B15/61 , G11B15/60
CPC分类号： G11B15/60

50. 发明专利

JPH1142579A POSITIONING POSITION OFFSET CORRECTING METHOD AND DEVICE THEREOF 失效
公开(公告)号：JPH1142579A
公开(公告)日：1999-02-16
申请号：JP20489597
申请日：1997-07-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAMARU NAOYUKI , YAMAGUCHI JOJI , KANEKO KAZUMASA , NISHIDA YASUHIDE , IZUMIDA CHIKASHI
IPC分类号： B25J9/10 , G05B19/18 , G05B19/404 , G05D3/12
摘要： PROBLEM TO BE SOLVED: To provide a high accurate positioning position offset correcting method and device reducing a positioning error generated by a temperature change and aged deterioration. SOLUTION: In this positioning device U' constituted by a mechanism part δof a part clamping hand 10 synthetically moved through an X-shaft/Y-shaft mechanism part α, β driven by X-shaft/Y-shaft motors 2, 5, this device U' has a reference positioning pin 15 being served as the reference in the case of measuring a position offset amount, inserted in one or more standard positions of a board 13 set by designating a group of an insertion hole 14 in a plurality of positioning target positions a photoelectric switch built-in plug 31 burying a tip end of a photoelectric switch detecting an end face of the reference positioning pin 15 in a tip end to be clamped by the part clamping hand 10, a cable winding up mechanism 33 winding up a signal cable 34 of this photoelectric switch, and an interface circuit 32 for inputting an on/off condition of this photoelectric switch to an electric computer 23.

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