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1. 发明专利

JPH05250005A 失效
公开(公告)号：JPH05250005A
公开(公告)日：1993-09-28
申请号：JP5058292
申请日：1992-03-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OTANI KOJI , KAKIZAKI TAKAO , KOGURE KENJI
IPC分类号： G05B13/02 , G05B19/18 , G05D17/02
摘要： PURPOSE:To execute torque compensation control of a robot with high precision by calculating an exact compensating torque without increasing calculation time. CONSTITUTION:First of all, control to follow up an applied target orbit is performed to the robot by using a normal control method (step 101) and action data composed of the angle of each joint under the control, angular velocity, angular acceleration and driving torque or the like are measured (step 102). Next, the parameter value of a dynamic model for calculating the compensating torque is identified by using these measured action data (step 103). Then, the compensating torque is calculated by using this identified dynamic parameter value (step 104). Thus, the compensating torque for torque-compensating the, robot having non-linear moving characteristics with high precision can be calculated with high precision.

2. 发明专利

JPH02201734A OPTICAL DISK RECORDING METHOD 失效
公开(公告)号：JPH02201734A
公开(公告)日：1990-08-09
申请号：JP2182289
申请日：1989-01-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IIJIMA TETSUO , KOGURE KENJI
IPC分类号： B41M5/26 , G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/30
摘要： PURPOSE:To expand an erasing power margin, and to record a signal at a high quality on a recording film by irradiating an optical disk by means of laser power >=1.5 times of the laser power, which is obtained when the optical disk is irradiated with a light beam and an amorphous phase emerges. CONSTITUTION:The laser power is assumed as P0 which makes amorphous phase emerge when the optical disk is irradiated with the laser power directly and continuously, the optical disk is irradiated with the power P1>=1.5XP0. In such a way, erasing can be made to correspond to the intermediate state between a crystal state and an amorphous state. Thus an erasing characteristic can be improved, the erasing power margin is expanded, and a phase changing medium can be recorded and erased at a high quality and at high efficiency.

3. 发明专利

JPH02156105A FINE CAP MEASURING APPARATUS 失效
公开(公告)号：JPH02156105A
公开(公告)日：1990-06-15
申请号：JP30887488
申请日：1988-12-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , OKUBO TOSHIBUMI , NISHIDA YASUHIDE , KISHIGAMI JUNICHI , TOSHIMA TOMOYUKI , SATO TOSHITAKE , KOGURE KENJI , KAKIZAKI TAKAO
IPC分类号： G01B11/14 , G11B21/21
摘要： PURPOSE:To enable measurement of an absolute distance of a fine gap at a high accuracy continuously in a wide range by emitting at least two lights with different wavelength to one optical system for detecting interfering light repeatedly in sequence. CONSTITUTION:Laser diodes 4A and 4B oscillate in emit light at different wavelengths. The lights pass through a beam synthesizer 7 and a beam splitter 8 and are focused at one point of a head 2 arranged under a glass disc 1 from an objective lens 12. Light reflected on the surfaces of the disc 1 and the head 2 are changed in optical path with a polarization prism 9 through the lens 12 and a collimator lens 11 to be detected with a photo detector 6. Then, a fine gap formed on the surface of the head 2 and the surface of the disc 1 can be measured from an intensity detected with the photo detector 6, a reflection factor of the surface of the glass disc 1, that of the surface of the head 2 and a wavelength of light by a specified expression. Thus, a simultaneous measurement accomplished by the same optical system depending on at least two wavelengths thereby enabling continuous measurement at a high accuracy in a wide range.

4. 发明专利

JPH01190272A DISPLACEMENT MAGNIFYING MECHANISM FOR SOLID STATE ACTUATOR 失效
公开(公告)号：JPH01190272A
公开(公告)日：1989-07-31
申请号：JP1362088
申请日：1988-01-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIZAWA TAKASHI , KOGURE KENJI
IPC分类号： H02N2/00
摘要： PURPOSE:To enhance the rigidity of mechanism and to improve its high-speed responsiveness, by adding up the displacement of a plurality of a solid state actuators for output. CONSTITUTION:A displacement magnifying mechanism C is composed of a base 10, three hollow cylindrical actuators 11-13 different in diameter and axially displaceable, cylindrical connective members 14-15 having flanges at the upper part on the outside and at the lower part on the inside, and an output member 16 to connect the parts to be positioned to the base 10. The actuator 11 is connected in turns between the base 10 and the flange on the upper part on the outside of the external connective member 14, while the actuator 12 is connected between the flange on the lower part on the inside of the connective member 14 and the flange on the upper part on the outside of the internal connective member 15, and so on sucessively connected. Thus, when the voltage is applied to each actuator 11-13, the displacement is so added up that the output member 16 expands three times as much as the single actuator of the same height and the displacement can be magnified.

5. 发明专利

JPS6355304B2 失效
公开(公告)号：JPS6355304B2
公开(公告)日：1988-11-01
申请号：JP7824783
申请日：1983-05-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAKIZAKI TAKAO , KOGURE KENJI , MITSUYA YASUNAGA
IPC分类号： H02K33/18 , F15B15/12 , G11B21/02

6. 发明专利

JPS62219370A SPINDLE LOCK MECHANISM FOR MAGNETIC DISK DEVICE 失效
公开(公告)号：JPS62219370A
公开(公告)日：1987-09-26
申请号：JP6264486
申请日：1986-03-20
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ARIGA TAKAHARU , MIZOSHITA YOSHIBUMI , YAMADA TOMOYOSHI , OGUCHI SHIGEMITSU , KOGURE KENJI
IPC分类号： G11B19/20 , G11B19/04 , G11B19/22
摘要： PURPOSE:To improve the reliability of a lock function by constituting a spindle shaft which is loaded with a disk medium and rotated, so that its center part is locked by a lock mechanism equipped on a fixed shaft positioned in its rotation center part. CONSTITUTION:In a fixed shaft 15 for supporting a spindle shaft 12 loaded with a disk medium 10, so as to be freely turnable from the inside, a lock piston 16 for pressing the spindle shaft 12 from the inside, and a lock shaft 18 for projecting the lock piston 16 to the outside from the circumferential surface of the fixed shaft are provided. By an operation for making the lock shaft 18 ascend, a pair of lock pistons 16 are projected to the outside, respectively, through a ball 17 and press the inside surface of a lock shaft 18. Accordingly, the spindle shaft 12 is locked from the inside.

7. 发明专利

JPS6258484A HELIUM SEALING TYPE MAGNETIC DISK DEVICE 失效
公开(公告)号：JPS6258484A
公开(公告)日：1987-03-14
申请号：JP19729185
申请日：1985-09-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YASUDA KYOSUKE , HOSHITANI KUNIO , KOGURE KENJI
IPC分类号： G11B33/14 , G11B33/12
摘要： PURPOSE:To detect mixing of air to helium with high accuracy by having a temperature resistance changing element in a magnetic disk container, and providing an external output terminal to connect to it. CONSTITUTION:In a container 2 of a helium sealing type magnetic disk device 1, a temperature resistance changing element 5 is arranged, and both edges of the temperature resistance changing element 5 are pulled out to the container 2 through an external output terminal 6 fitted at the airtight condition. The temperature resistance changing element 5 is sufficient when it is in the sealed helium atmosphere, and therefore, the element may be arranged at any place in the container 2, the small element is easily available and can be assembled without changing the standard of the present magnetic disk device. For both temperature resistance changing elements, when the same electric current is supplied, the difference occurs at the terminal voltage in the helium and in the air. Consequently, by calibrating the difference voltage beforehand corresponding to the mixing ratio of the air to the helium, the mixing ratio of the air can be measured with a sufficient accuracy.

8. 发明专利

JPS5815870B2 失效
公开(公告)号：JPS5815870B2
公开(公告)日：1983-03-28
申请号：JP6157079
申请日：1979-05-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANEKO SATSUZO , KOGURE KENJI
IPC分类号： G11B17/32 , G11B17/34

9. 发明专利

JPS5644123A FLOATING HEAD SLIDER 失效
公开(公告)号：JPS5644123A
公开(公告)日：1981-04-23
申请号：JP11874979
申请日：1979-09-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KITA TOSHIROU , KOGURE KENJI , NAKANISHI TAKUJI
IPC分类号： G11B5/84 , G11B5/82
摘要： PURPOSE:To remove a projection on a magnetic recording medium surface with efficiency by independently forming an air bearing surface that floats a head and a convex part that shaves off the projection of the magnetic recording medium. CONSTITUTION:Floating head slider 5 is provided with taper surface 5a at the inflow side, air bearing surface 5b that gives a float and concave part 5c with a rectangular surface made level with air bearing surface 5b. Then, the front edge of concave part 5c has pointed ridgeline part 6. In such a constitution, projection 3 of magnetic recording medium 2 is shaved off in a short time by striking ridgeline part 6 of floating head slider 5. Therefore, the projection of the magnetic recording medium surface can effectively be removed.

10. 发明专利

JPS5423508A MAGNETIC DISC MEDIUM 失效
公开(公告)号：JPS5423508A
公开(公告)日：1979-02-22
申请号：JP8836877
申请日：1977-07-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATOU TOSHITAKE , TOSHIMA TOMOYUKI , NAKANISHI TAKUJI , TAGO AKIO , KOGURE KENJI
IPC分类号： G11B5/82
摘要： PURPOSE:To improve the attraction phenomena of contact start-stop type floating magnetic head and magnetic media by decreasing the face accuracy of contact start-stop zones.

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