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41. 发明专利

JPH02285582A BLOCH LINE MEMORY DEVICE AND INFORMATION ERASING METHOD 失效
公开(公告)号：JPH02285582A
公开(公告)日：1990-11-22
申请号：JP10592489
申请日：1989-04-27
申请人： HITACHI LTD
发明人： MARUYAMA YOJI , FUJIMOTO KAZUHISA , SUZUKI MAKOTO
IPC分类号： G11C11/14
摘要： PURPOSE:To shorten the time required for erasing information by moving a Block line to a groove pattern or a non-magnetic area such as an in-plane magnetizing layer or an instable area in a state that a stripe magnetic domain is coupled to such an area. CONSTITUTION:A stripe magnetic domain 1 is closed near a groove pattern 6 for erasing, which is formed by digging a groove in a ferromagnetic substance film 16. Afterwards, when a ferromagnetic field is impressed between one part of the closed stripe domain 1 and one part of the groove pattern 6 for erasing in a direction equal to the magnetizing direction of the stripe magnetic domain 1, the stripe magnetic domain 1 is enlarged towards the groove pattern 6 for erasing and coupled with the groove pattern soon. In such a way, one part of Bloch magnetic domain walls is set in a state to be coupled with the area, where a Block line is made instable at least, or with the nonmagnetic area and the Bloch line is moved to this area. Thus, since it is not necessary to successively execute it concerning all the Bloch lines that the Bloch line is transferred, cut off afterwards and erased like conventional operation, the time required for erasing the information can be widely shortened.

42. 发明专利

JPH02187986A MAGNETIC BUBBLE MEMORY ELEMENT 失效
公开(公告)号：JPH02187986A
公开(公告)日：1990-07-24
申请号：JP499189
申请日：1989-01-13
申请人： HITACHI LTD
发明人： TAKESHITA MASATOSHI , TOYOOKA TAKASHI , SATO TOSHIHIRO , SUZUKI MAKOTO
IPC分类号： G11C11/14
摘要： PURPOSE:To contrive the extension of a service life of a stretch conductor by forming a constructed part in a closed end part of a magnetic bubble stretch use hairpin conductor which intersects with an ion implantation transfer path. CONSTITUTION:A soft magnetic material detecting wire 4 is formed in a hairpin shape so as not to intersect solidly with a hairpin conductor 3, and so as to enhance dielectric strength between the detecting wire 4 and the conductor 3. As for the conductor 3, a constricted part is formed in an area 8 turned back in the vicinity of an ion implantation path 1, and a gap of the conductor is narrowed. By the shape in which pattern width of the conductor 3 is 3.5mum, gap width of the area 8 is 1mum, and gap width of other part than the constricted part is 5mum, a stretch pulse current of about 80-100mA is enough with regard to a magnetic bubble whose diameter is 0.8mum, and amplitude of a stretch pulse current can be decreased to about 0.6-fold, therefore, a service life of the hairpin conductor can be extended.

43. 发明专利

JPH02172091A MAGNETIC BUBBLE MEMORY ELEMENT 失效
公开(公告)号：JPH02172091A
公开(公告)日：1990-07-03
申请号：JP32361388
申请日：1988-12-23
申请人： HITACHI LTD
发明人： SATO TOSHIHIRO , TOYOOKA TAKASHI , TAKESHITA MASATOSHI , SUZUKI MAKOTO , HIROSHIMA MINORU , YANAI MASAHIRO , NISHIYAMA SEIICHI , SAITO KATSUTOSHI
IPC分类号： G11C11/14 , G11C19/08
摘要： PURPOSE:To attain readout just after writing by applying swap operation comprising erasure of bubble on a minor loop and stretch of bubble on a major line in a dual gate. CONSTITUTION:A recessed part 15 is provided to a minor loop corner 4. A rewrite object bubble at an aligner rate location 8 on the corner 4 is erased. In this case, a write bubble 14 exists in the recessed part on the major line 3. When the bubble 14 is transferred in the gap of a hair pin conductor pattern 5 at the ion implantation projection 16 on the transfer line of the line 3, a stretch pulse is applied to the pattern 5 to stretch the bubble up to the recessed part 15. Since the recessed part 15 is formed with ion implantation border 1a-1b, stronger bubble attraction than that of the projection 16 exists. Thus, when a stretch pulse 13 is lost, the bubble 14 is attracted to the recessed part 15 by the attracting force of the recessed part 15 and the write is finished. As a result, the data is normally read out.

44. 发明专利

JPH0279752A ASSEMBLING METHOD AT SITE OF ROTOR FOR LARGE-SIZED ROTARY ELECTRIC MACHINE, HOUSING OF GENERATING STATION AND PIT 失效
公开(公告)号：JPH0279752A
公开(公告)日：1990-03-20
申请号：JP22870888
申请日：1988-09-14
申请人： HITACHI LTD
发明人： SHIRATA SHINSAKU , YASAKA YASUHIRO , NAGURA OSAMU , TSUJI EIJI , AKAGAWA HIROTAKA , SUZUKI MAKOTO
IPC分类号： E02B9/00 , H02K15/00 , H02K15/02 , H02K15/06
摘要： PURPOSE:To conduct the title assembling method efficiently and safely at low cost by dividing and performing assembly work executed while holding a rotor under an erected state and assembly work executed while sustaining the rotor under a horizontal state. CONSTITUTION:When a rotor 10 is assembled, a yoke 14 is laminated on the outer circumference of a spider 13 first under the state A in which the spider 13 having a center as a shaft is erected in a pit 1 by utilizing a crane 50. Cores 15 are laminated on the outer circumference of the yoke 14. The rotor 10 to which said operation is completed is brought down under the state B in which the rotor 10 is laid down in the pit 1 by operating the crane 50. A winding is inserted to the slot sections of the cores 15 under the state, and the terminal sections of the winding are connected. Binding stretching operation in which binding wires composed of steel wires, etc., are wound tightly on the outer circumferential sections of the winding terminal sections 17 is conducted. Brazing operation for unifying the binding wires is performed.

45. 发明专利

JPH01292699A BLOCH LINE MEMORY ELEMENT 失效
公开(公告)号：JPH01292699A
公开(公告)日：1989-11-24
申请号：JP12172988
申请日：1988-05-20
申请人： HITACHI LTD
发明人： IKEDA HITOSHI , MARUYAMA YOJI , FUJIMOTO KAZUHISA , SUZUKI MAKOTO
IPC分类号： G11C11/14
摘要： PURPOSE:To form a very fine pattern by irradiating a high coercive force film selectively with a convergent corpuscular beam capable of beam deflection, and forming different magnetized structure periodically. CONSTITUTION:A groove 3 is formed on a magnetic garnet film 1, and a minor loop as the storage area of a BL (Bloch line) pair is formed by a stripe magnetic domain 2 surrounding the groove 3. The BL pair 4 existing in the magnetic wall of a magnetic domain end part becomes the information unit of this memory. The BL pair 4 performs transfer lying along the magnetic wall by the vibration of a bias magnetic field. Next, after the groove 3 is filled up with polyimide resin and is leveled, it is covered with Co-Pt 5. Afterward, after the Co-Pt is cut into a magnetic film pattern, it is set in a vacuum chamber, and is stabilized by heat, and is irradiated with the convergent ion beam 7 of Ga ion as running along the pattern in a very small period. Thus, the very fine pattern with little residual distortion and little deterioration of a magnetic characteristic can be formed.

46. 发明专利

JPH01241086A MAGNETIC BUBBLE ELEMENT 失效
公开(公告)号：JPH01241086A
公开(公告)日：1989-09-26
申请号：JP6739688
申请日：1988-03-23
申请人： HITACHI LTD
发明人： SATO TOSHIHIRO , TOYOOKA TAKASHI , TAKESHITA MASATOSHI , SUZUKI MAKOTO
IPC分类号： G11C11/14
摘要： PURPOSE:To obtain stable detected signals in a wide bias magnetic field range by providing an isolated ion-implanted area at part of the elongated area where the bubble of a detector is extended. CONSTITUTION:An ion-implanted area 7 is provided at the end section of the hairpin type conductor 1 of a detector. The bubble of the detector is started to elongate by means of stretch pulses 4 and reaches the ion-implanted area 7. Thereafter, the bubble can easily maintain an elongated state between an ion-implanted transfer path 2 and the area 7 while pulses 5 are impressed. Moreover, since the ion-implanted area 7 is isolated, the end section of a stripe- like magnetic domain does not move until annihilator pulses 6 are impressed. Therefore, the magnetic domain is stably elongated until the annihilator pulses 6 are impressed and the leakage magnetic field from the magnetic domain is supplied to a detecting line 3. As a result, stable detected signals can be obtained by means of the magneto resistance effect of the detecting line.

47. 发明专利

JPH01231418A INPUT BUFFER CIRCUIT 失效
公开(公告)号：JPH01231418A
公开(公告)日：1989-09-14
申请号：JP5614588
申请日：1988-03-11
申请人： HITACHI LTD
发明人： HIGUCHI HISAYUKI , SUZUKI MAKOTO , TACHIBANA MASARU
IPC分类号： H03K3/356 , H03K5/02 , H03K19/00 , H03K19/0185
摘要： PURPOSE:To attain high speed processing and to reduce the power consumption by using an inverter circuit so as to apply waveform shaping to an input signal, giving the resulting signal to a gate of a MOSFET of a flip-flop circuit comprising P-channel and N-channel MOSFETs and to a source of the same channel MOSFET opposite thereto and operating the MOSFETs. CONSTITUTION:An input signal is waveform-shaped by inverter circuits 12, 27 and given to a gate of a MOSFET 17 of a flip-flop circuit C and to a source of a MOSFET 18 of the same channel as the MOSFET 17 opposite to the MOSFET 17, an affirmative and a negative signal with respect to the input signal are generated at the nearly same delay time by operating both the MOSFETs 17, 18 complimentarily with respect to the input signal. Since the flip-flop circuit C is used in this way, a current flows only in a transient way only when the input signal 1 is switched, no steady-state current exists and the amplified affirmative and negative signals with respect to the input signal are extracted from an intermediate terminal 7 of the flip-flop circuit 7. Thus, the power consumption is reduced and high speed processing is attained.

48. 发明专利

JPH01217789A MAGNETIC BUBBLE GENERATOR 失效
公开(公告)号：JPH01217789A
公开(公告)日：1989-08-31
申请号：JP3938888
申请日：1988-02-24
申请人： HITACHI LTD
发明人： TAKESHITA MASATOSHI , SATO TOSHIHIRO , TOYOOKA TAKASHI , SUZUKI MAKOTO
IPC分类号： G11C11/14 , G11C19/08
摘要： PURPOSE:To prevent a malfunction in which a generated bubble is extended and divided into two by using a generator having an ion implantation transfer path and the hair pin conductor pattern of two layers. CONSTITUTION:The leading edge of the gap between the two mutually insulated upper and lower layer hair pin conductor patterns 5, 6 is disposed in the vicinity of the cusp 4 of the ion driving transfer path 1. In such a way, when the hair pin conductor patterns 5, 6 of the two layers are used, the amplitude of a magnetic field pulse is larger than when one layer is used to generate a bubble with a small magnetic field pulse. The bubble is generated at a position where the absolute value of the magnetic field pulse is the largest and the generation is limited only in the vicinity of a part in which the gaps of the hair pin conductor patterns of the two layers are overlapped and the length of extending the bubble is reduced. Thereby, at the time of contracting the extended bubble, the malfunction where a part thereof is divided to simultaneously generate more than two bubbles is prevented.

49. 发明专利

JPH01140485A MAGNETIC BUBBLE MEMORY ELEMENT 失效
公开(公告)号：JPH01140485A
公开(公告)日：1989-06-01
申请号：JP29755187
申请日：1987-11-27
申请人： HITACHI LTD
发明人： TAKESHITA MASATOSHI , TOYOOKA TAKASHI , SATO TOSHIHIRO , KODAMA NAOKI , UMEZAKI HIROSHI , SUZUKI MAKOTO
IPC分类号： G11C11/14
摘要： PURPOSE:To attain the long life of a hair pin type stretch conductor pattern by using the conductor pattern of a second layer as the hair pin type stretch conductor pattern of a detector. CONSTITUTION:After a second insulating layer 5 under the hair pin type stretch conductor pattern area is removed, the hair pin type conductor pattern 7 is formed by the second layer conductor pattern 6. In such a way, as the hair pin type stretch conductor pattern 7 for a current stretch type magnetic bubble detector, the second layer conductor pattern 6 thick in the film thickness, thereby, a resistance to an electromigration can be increased. The second insulating layer 5 under the hair pin type stretch conductor pattern area is removed, thereby, the hair pin type stretch conductor pattern 7 formed by the second layer conductor pattern 6 can be formed on the same plane as a first layer conductor pattern 4. Thereby, the long life of the air pin type strength conductor pattern is attained.

50. 发明专利

JPH01128626A ADAPTIVE TYPE RANDOM ACCESS SATELLITE COMMUNICATION SYSTEM 失效
公开(公告)号：JPH01128626A
公开(公告)日：1989-05-22
申请号：JP28533187
申请日：1987-11-13
申请人： HITACHI LTD
发明人： SUZUKI MAKOTO
IPC分类号： H04B7/155
摘要： PURPOSE:To always attain the communication of satisfactory efficiency even to the fluctuation of the wide range of traffic by selecting an aloha system with slor or a pure aloha system according to the size of a using rate with a center earth station, using a descending line and executing an instruction to all terminals. CONSTITUTION:Transmitting data from a terminal 5 are once accumulated in a buffer memory 27 and after that, read by the timing signal of a transmitting timing circuit 26. Then, the data are passed through a modulator 28, a transmitter 29 and an antenna 20 and outputted as the ascending line signal of a frequency f2. The transmitting timing circuit 26 generates a transmitting timing signal based on a random system control signal in control information from a center earth station 1 to be separated by a separating circuit 23. Namely, when the pure aloha system is selected, transmission is started each time the transmitting data are generated regardless of a slot timing. When the aloha system with slot is selected, the transmission is started with synchronizing to the start of the slot timing. Thus, a random access system to adapt to the traffic can be selected and used.

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