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1. 发明专利

JPH11220511A DATA TRANSMISSION RECEPTION SYSTEM FOR OPTICAL BUS CIRCUIT DEVICE 失效
公开(公告)号：JPH11220511A
公开(公告)日：1999-08-10
申请号：JP2065798
申请日：1998-02-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ITO KEIICHIRO , MIKAZUKI TETSUO , SHIMADA JUNICHI
IPC分类号： H04L29/08 , H04L7/00
摘要： PROBLEM TO BE SOLVED: To provide a data transmission reception system which will not induce a transfer rate of a bus circuit. SOLUTION: In this data transmission reception system where a large number of exclusive circuits, each having different functions send/receive prescribed information via a common use circuit consisting of an optical transmission circuit network 4, each exclusive circuit 1 consists of a transmission reception circuit section 11 and a function circuit section 12. Then transmission/reception maintaining synchronization of both side bytes is attained by setting up byte synchronization for both of all transmission signals and reception signals, before any of the exclusive circuits 1 starts data transmission reception or it is boosted, maintaining bit synchronization at all times after that, so that but synchronization of the transmission clock signal and the reception clock signal are maintained at all times.

2. 发明专利

JP2525223B2 失效
公开(公告)号：JP2525223B2
公开(公告)日：1996-08-14
申请号：JP10156188
申请日：1988-04-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KISHIGAMI JUNICHI , KOSHIMOTO YASUHIRO , ITO KEIICHIRO
IPC分类号： G11B5/31

3. 发明专利

JPH06204733A SMALL SIZED ANTENNA 失效
公开(公告)号：JPH06204733A
公开(公告)日：1994-07-22
申请号：JP1586593
申请日：1993-01-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI TAKAFUMI , ITO KEIICHIRO , MICHIGAMI OSAMU , ISHII OSAMU
IPC分类号： H01Q9/26 , H01Q13/08
摘要： PURPOSE:To eliminate the need for a matching circuit with a feeder, to make the antenna small and highly efficient by exciting a radiating element without contacting of a coupling line. CONSTITUTION:A radiation element 1 and a coupling line 2 are arranged without contacting. The coupling line 2 has the same characteristic impedance as that of a feeder 3. Furthermore, the length L of the radiation element 1 in the direction of an electric field of a major polarized wave is shorter than the length of a linear half wavelength dipole element used in the resonance state, and the element 1 is self-resonated at an operating center frequency and excited through electromagnetic coupling with the coupling line 2. Through the constitution of the small sized as above, since the operating frequency depends only on the shape of the radiation element 1, the coupling line 2 of the same shape is used even for an antenna for a different band. Thus, it is not required to make the design of the coupling line 2 in matching with each characteristic of different radiation elements. Thus, the size is made small and the antenna is made highly efficient.

4. 发明专利

JPH05190917A HEAT INSULATING VESSEL FOR HIGH FREQUENCY COMMUNICATION APPARATUS 失效
公开(公告)号：JPH05190917A
公开(公告)日：1993-07-30
申请号：JP6525792
申请日：1992-03-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMACHI YOSHIHIRO , ITO KEIICHIRO , MICHIGAMI OSAMU , ISHII OSAMU , KOSHIMOTO YASUHIRO
IPC分类号： B65D81/38 , B65D85/38 , B65D85/86 , H01L39/04 , H04B15/00
摘要： PURPOSE:To obtain a heat insulating vessel wherein electromagnetic wave transmission is possible and heat insulation efficiency to radiation heat transfer is improved, when superconductor is applied to high frequency communication parts. CONSTITUTION:A heat insulating vessel for a high frequency communication apparatus which vessel accommodates superconducting material parts is constituted as a double structure having an inner vessel 1 and an outer vessel 3 made of material which transmits electromagnetic wave. Between the inner vessel 1 and the outer vessel 3, heat insulating material 9 is interposed. Said material is composed of the following; a glass substrate bonded to the surface of the inner vessel 1, and a dielectric multilayered film which is formed on the glass substrate by alternately laminating TiO2 thin film layers having a high refractive index and MgF2 thin film layers having a low refractive index, or As2O3 thin film layers having a high refractive index and BaF2 thin film layers having a low refractive index.

5. 发明专利

JPH0590650A SUPERCONDUCTIVE MATERIAL FOR HIGH-POWER HIGH-FREQUENCY 失效
公开(公告)号：JPH0590650A
公开(公告)日：1993-04-09
申请号：JP24872891
申请日：1991-09-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMACHI YOSHIHIRO , ITO KEIICHIRO , MICHIGAMI OSAMU
IPC分类号： H01B12/02 , H01L39/00 , H01L39/02 , H01Q11/08
摘要： PURPOSE:To increase the structural strength of a part when applying an oxide superconductor fragile in the sense of material strength to a part for high frequency. CONSTITUTION:As a three-dimensional structure part consisting of a superconductive material, a Y-Ba-Cu-O (YBCO) sintered body 1 molded in cylindrical shape is used, and as an insulator near in thermal expansion coefficient to this, fiber reinforced plastic (FRP) is used. An FRP mold 2 is made by molding the YBCO sintered body 1 with this FRP and the structural strength of the part is improved by the mechanical strength of the FRP mold 2 while preventing the part breakage by the thermal expansion coefficient.

6. 发明专利

JPH059020A SUPERCONDUCTING PARTS FOR HIGH-FREQUENCY 失效
公开(公告)号：JPH059020A
公开(公告)日：1993-01-19
申请号：JP9468991
申请日：1991-04-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , ITO KEIICHIRO , NAGAI YASUHIRO , KIMACHI YOSHIHIRO
IPC分类号： C01G1/00 , C01G3/00 , C04B41/81 , H01L39/00 , H01Q1/40
摘要： PURPOSE:To suppress deterioration with the lapse of time by coating the surface of a superconductor material with a chemically stable insulator. CONSTITUTION:A superconductor material made of an oxide having a super- conducting state at low temp. is immersed in a soln. contg. a fluorocarbon type org. substance and an inorg. oxide selected from glass, alumina, magnesia and tantalum oxide, the solvent is removed and the surface of the superconductor material is coated with a chemically stable insulator.

7. 发明专利

JPH04373202A OXIDE SUPERCONDUCTING MICROWAVE DEVICE 失效
公开(公告)号：JPH04373202A
公开(公告)日：1992-12-25
申请号：JP17589891
申请日：1991-06-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGAI YASUHIRO , ISHII OSAMU , ITO KEIICHIRO , SUZUKI TAKAFUMI
IPC分类号： H01P1/203 , H01P3/08 , H01P7/08
摘要： PURPOSE:To realize the oxide superconducting microwave device with high performance and high reliability in which the frequency adjustment or the performance adjustment at mount is facilitated. CONSTITUTION:A thin fluororesin thin film 18 is filled in a gap 16 between an upper board including an upper ground lane 12 and an intermediate board 13 including a center conductor 11 to assemble the strip line structure of the oxide superconducting microwave device. Thus, an undesired gap for close adhesion is eliminated by smoothing a mechanical contact face between the upper board 14 and the intermediate board 13. Since the gap 16 is filled by using the fluororesin thin film 18 having a larger dielectric constant than that of air, a change in the effective dielectric constant around the center conductor 11 is suppressed.

8. 发明专利

JPH04216203A COMPACT ANTENNA WITH MATCHING CIRCUIT 失效
公开(公告)号：JPH04216203A
公开(公告)日：1992-08-06
申请号：JP41111690
申请日：1990-12-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ITO KEIICHIRO , ISHII OSAMU , KOSHIMOTO YASUHIRO
IPC分类号： H01Q9/26
摘要： PURPOSE:To obtain a compact antenna having high efficiency and a wide band by adding an imbalanced transmission line to a resonance type element, which is shorter in comparison with a wavelength, and a 1/4 wavelength matching circuit. CONSTITUTION:As a feeder line, an imbalanced transmission line 3 is directly connected to the side, where no radiator 1 is connected, of a balanced 1/4 wavelength matching circuit 2. This is for obtaining a balance function at the matching circuit 2 itself and transforming transmission from the balanced system of the radiator 1 to the imbalanced system of the feeder line 3 by utilizing a fact that the terminal part not connecting the radiator 1 of the 1/4 wavelength matching circuit 2 becomes the joint of current distribution and the crest of voltage distribution. Therefore, it is not necessary to externally attach a balance, miniaturization and production can be facilitated, and the loss can be reduced.

9. 发明专利

JPH0395474A MAGNETIC FIELD SENSOR 失效
公开(公告)号：JPH0395474A
公开(公告)日：1991-04-19
申请号：JP23313489
申请日：1989-09-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , NAGAI YASUHIRO , ITO KEIICHIRO
IPC分类号： G01R33/02
摘要： PURPOSE:To measure a low frequency magnetic field with a high S/N ratio by periodically applying a current of critical current density or more to the superconductive plate provided in a magnetic shield and selectively amplifying the frequency coinciding with the current frequency of a magnetoelectric converter. CONSTITUTION:A fixed shield 2 and variable shields 3, 4 are provided so as to cover a magnetoelectric converter 1 and the temp. of the shields 3, 4 is set to temp. slightly lower than superconductivity developing temp. and the current flowing to the shields 3, 4 from an AC current source 12 increases and, when the current value of the current exceeds a critical current value, superconductive characteristics break and susceptibility becomes zero and magnetic flux enters a magnetic field sensor. When the current value becomes the critical current value or less, superconductivity is again developed and the magnetic flux is discharged from the magnetic field sensor and the output from the converter 1 becomes one corresponding to a zero magnetic field. Since a low frequency magnetic field is subjected to AM modulation by the frequency of the current source 12, for example, when a magnetic field signal of DC - several Hz is modulated by a 10kHz AC current like a heart magnetic field and detected, said signal can be detected as a signal having a band of 10kHz + or - several Hz.

10. 发明专利

JP2003248416A METHOD AND DEVICE FOR RECORDING AND REPRODUCING HOLOGRAM 审中-公开
公开(公告)号：JP2003248416A
公开(公告)日：2003-09-05
申请号：JP2002231631
申请日：2002-08-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SENDA MASAKATSU , YOSHIKAWA HIROSHI , ITO KEIICHIRO , ANDO YASUKO , TANABE TAKANARI
IPC分类号： G02B5/18 , G03H1/26
摘要： PROBLEM TO BE SOLVED: To easily control the incident angle of a reference light to be made incident from the outside of a hologram medium with high accuracy both in recording and reproducing in the case where an angle multiple recording is performed. SOLUTION: The light emitted from a light source 50 is transmitted through optical branching devices 511 and 512 and is made an object light 60 by obtaining the information to be recorded by a space optical modulator 52, and the object light is made incident on the hologram medium 58 through an imaging device 541. On the other hand, the light which is transmitted through the optical branching devices 511 and is reflected 90° by the optical branching devices 512 is reflected by a reflector 552 and is made incident as the reference light 59 on a specific core layer of the hologram medium 58 by a beam-condenser 56. Also, the light reflected 90° by the optical branching devices 511 is reflected by a reflector 553 and is made incident as the reference light 59 on the hologram medium 58. Which of the reference is used is controlled by opening and closing of light shielding devices 622 and 623. COPYRIGHT: (C)2003,JPO

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