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81. 发明专利

JPS61104661A Semiconductor device 失效
标题翻译：半导体器件
公开(公告)号：JPS61104661A
公开(公告)日：1986-05-22
申请号：JP22573784
申请日：1984-10-29
申请人： Hitachi Ltd
发明人： NAKAMURA TORU , NAKAZATO KAZUO , HONMA NORIYUKI , HAYASHIDA TETSUYA , KUBO SEIJI , SAGARA KAZUHIKO , MATSUMOTO MASAAKI
IPC分类号： H01L29/10 , H01L29/47 , H01L29/861 , H01L29/872
CPC分类号： H01L29/10 , H01L29/872
摘要： PURPOSE:To enable a Schottky barrier diode (SBD) to stably act independently of the local potential of a substrate by a method wherein a thin p-type layer is provided on an n-type buried layer, and the substrate and the SBD are electrically decomposed with these layers. CONSTITUTION:A fixed voltage is impressed on the n-type buried layer 2-2 via metallic electrode 2-6, and a fixed voltage on the p-type buried layer 2-7 via metallic electrode 2-9. The SBD gets current forward that flows from A to C. Such a connection makes the SBD completely independent of the potential of the substrate 2-1. In other words, even when noise signals generated in the substrate are transmitted to the SBD direction of the surface, the signals are absorbed to the buried layers 2-2 and 2-7, and the potential of the buried layer does not vary; therefore, effects on the SBD are eliminated. As a result, it is made possible to produce the SBD which is not affected by noise signals from the substrate.
摘要翻译：目的：为了使肖特基势垒二极管（SBD）通过其中在n型掩埋层上提供薄p型层的方法来稳定地作用于衬底的局部电位，并且衬底和SBD是电用这些层分解。构成：通过金属电极2-6在n型掩埋层2-2上施加固定电压，通过金属电极2-9在p型掩埋层2-7上施加固定电压。 SBD从A到C流向前进。这样的连接使SBD完全独立于基板2-1的电位。换句话说，即使在衬底中产生的噪声信号被发送到表面的SBD方向，信号也被吸收到掩埋层2-2和2-7，并且掩埋层的电位不变化; 因此，消除了对SBD的影响。结果，可以产生不受来自基板的噪声信号影响的SBD。

82. 发明专利

JPS6134788A Sense circuit 失效
标题翻译：感应电路
公开(公告)号：JPS6134788A
公开(公告)日：1986-02-19
申请号：JP15524584
申请日：1984-07-27
申请人： Hitachi Ltd
发明人： MATSUMOTO MASAAKI , KANETANI KAZUO , YAMAGUCHI KUNIHIKO , HONMA NORIYUKI , NANBU HIROAKI
IPC分类号： G11C11/416 , G11C11/34 , H03F3/45
摘要： PURPOSE: To prevent ringing of an output electric potential waveform and to execute a stable action by adding capacity between bases of emitter linking transistors generating a sense output.
CONSTITUTION: Each electric current which flows at both sense lines by means of a prestage circuit 6 is converted to the voltage with electric current voltage conversion circuits 4 and 5, impressed to bases of emitt coupling transistors Q
5 and Q
6 and the sense voltage is outputted. Between the bases of these Q
5 and Q
6 , a condenser C3 is added, the time constant of a base current is large and the influence due to ringing of an electric current waveform from the circuit 6 is restricted. As a result, ringing of the output potential waveform of a sense circuit can be prevented, and a stable action can be executed.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了防止输出电位波形的振铃，并通过在产生感测输出的发射器连接晶体管的基极之间增加电容来执行稳定的动作。构成：通过预备电路6在两条感测线上流动的每个电流被转换成具有电流电压转换电路4和5的电压，施加到发射耦合晶体管Q5和Q6的基极，并且输出感测电压。在这些Q5和Q6的基极之间，加上电容器C3，基极电流的时间常数大，并且受到来自电路6的电流波形的振铃的影响受到限制。结果，可以防止感测电路的输出电位波形的振铃，并且可以执行稳定的动作。

83. 发明专利

JPS59221889A SEMICONDUCTOR CIRCUIT DEVICE 失效
公开(公告)号：JPS59221889A
公开(公告)日：1984-12-13
申请号：JP9571683
申请日：1983-06-01
申请人： HITACHI LTD
发明人： MATSUMOTO MASAAKI
IPC分类号： G11C11/414 , G11C11/34
摘要： PURPOSE:To reduce the power consumption of a bipolar RAM driving circuit by forming each word line driving circuit with NPN, PNP transistors (TRs) and flowing a large current only to the PNP TR of a selected driving circuit. CONSTITUTION:When at least one of input voltages V1m, V2m of a word line Xm driving circuit goes to a high potential, at least one of PNP TRs T1m, T2m is turned on, a constant current I1m is applied to the base and the PNP TR TPm is turned off. Further, a current flows to a resistor R1m from an external power supply VRC, the TR T3m is turned off and a word line Xm goes to a low potential. On the other hand, when the voltages V1m, V2m are at a low potential, a current from the power supply VRC flows to the resistor R1m and the selected word line Xm is driven by a large amplitude. The power consumption of the driving circuit of the bipolar RAM is reduced by the constitution flowing a large current only at this selection.

84. 发明专利

JP2003263709A MAGNETIC HEAD SLIDER, ITS SUPPORT AND MAGNETIC DISK DRIVE 审中-公开
公开(公告)号：JP2003263709A
公开(公告)日：2003-09-19
申请号：JP2002066388
申请日：2002-03-12
申请人： HITACHI LTD
发明人： TSUCHIYAMA RYUJI , KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , HASHIMOTO SEIJI , JO KINKOKU
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To realize floating characteristics to maintain a low floating amount of little fluctuation with respect to the waviness of a medium surface in a magnetic head slider mounted on a magnetic disk drive. SOLUTION: In the magnetic head slider on which a magnetic head for recording/reproducing disk information is mounted, if a depth from a contact surface between an inlet pad 11 and an outlet pad 12 brought into contact with a medium surface when a disk is stopped to the air inlet side step surface of the inlet pad 11 is δs1, a depth to the air inlet side step surface of the outlet pad 12 is δs2, and a step depth to the surface of a side rail 13 is δs3, then δs1≤δs2 COPYRIGHT: (C)2003,JPO

85. 发明专利

JP2003123422A MAGNETIC DISK UNIT AND MAGNETIC HEAD SLIDER 审中-公开
公开(公告)号：JP2003123422A
公开(公告)日：2003-04-25
申请号：JP2001314721
申请日：2001-10-12
申请人： HITACHI LTD
发明人： KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , TANAKA HIDEAKI , MATSUDA AKIRA , SAEGUSA SHOZO
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To not only reduce the variance in rolling direction of a magnetic head slider but also improve the capacity for approaching a magnetic disk. SOLUTION: The magnetic head slider is constituted of a magnetic head mounting face which is brought most close to the magnetic disk in operation and on which a magnetic head 9 is mounted, a slider rail face 6 which is formed up to the vicinity of an air outflow end 3 while covering a face to an air inflow side 2 of the magnetic head 9 and faces on both sides in the vicinity of the air outflow end 3, a step bearing face 7 formed on at least the air inflow end 3 side of the slider rail face 6, and a negative pressure groove 8 formed surrounding the step bearing face 7, and the magnetic head mounting face is formed on an aluminum protection film of the magnetic head 9.

86. 发明专利

JP2003085715A Magnetic head slider and magnetic disk device using the same 有权
标题翻译：磁头滑块及使用该磁头的磁性装置
公开(公告)号：JP2003085715A
公开(公告)日：2003-03-20
申请号：JP2001277427
申请日：2001-09-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOYAMA NAOKI , TAKEUCHI YOSHINORI , WATANABE KOICHI , MATSUMOTO MASAAKI , KODAIRA HIDEKAZU , IMANAKA RITSU , SHIRAKI KIYONORI , TANABE HIDEO , OTSU TAKAYOSHI
IPC分类号： G11B5/31 , G11B5/39 , G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head slider having an element structure that can avoide deterioration in reliability or electric characteristics of an electromagnetic conversion element when an air bearing surface in the vicinity of an element is eliminated, and to provide a magnetic disk device using the same.
SOLUTION: In the air bearing surface of the magnetic head slider, in order to reduce a floating amount by narrowing a rail width in the vicinity of an element part, an element part such as a magnetic shield included in a part to be eliminated during rail formation is retreated, and only a part necessary as an element is protruded. Thus, without deteriorating reliability or electric characteristics, the rail width is narrowed.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种具有元件结构的磁头滑动器，当元件附近的空气轴承表面被消除时，该元件结构可以使电磁转换元件的可靠性或电特性劣化，并且提供一种磁盘装置使用相同解决方案：在磁头滑动器的空气轴承表面中，为了通过使元件部分附近的轨道宽度变窄来减少浮动量，包括在轨道内待消除的部分中的磁屏蔽的元件部件形成后退，仅作为元件所必需的部分突出。因此，在不降低可靠性或电特性的情况下，导轨宽度变窄。

87. 发明专利

JP2002157851A MAGNETIC DISK UNIT 失效
公开(公告)号：JP2002157851A
公开(公告)日：2002-05-31
申请号：JP2000352544
申请日：2000-11-15
申请人： HITACHI LTD
发明人： KURITA MASAYUKI , MATSUMOTO MASAAKI , JO KINKOKU , KODAIRA HIDEKAZU , OTANI YUICHI , TANAKA HIDEAKI , MIYAKE YOSHIHIKO , HARADA TAKESHI
IPC分类号： G11B21/21 , G11B5/55 , G11B5/60 , G11B21/12
摘要： PROBLEM TO BE SOLVED: To solve the problem that it is difficult to directly mount a current inductive type recording element and a magnetoresistance type reproduction element in a conventional active head slider because the built-in of wiring for recording/reproducing and wiring for actuator control is required in a small moving part in order to move a recording and reproducing element by using a minute actuator. SOLUTION: The minute actuator does not move the recording and reproducing element, but moves a floating pad. Moreover, the floating pad is disposed ahead of the recording and reproducing element. Thereby sufficient size for a recording and reproducing element part can be ensured, and current recording and reproducing elements and a wiring structure can be applied. Individual adjustment of floating heights brings increase of recording density. Moreover, high reliability is obtained by separating the recording and reproducing elements from a disk during loading/unloading or the like.

88. 发明专利

JP2001202732A MAGNETIC DISK UNIT 失效
公开(公告)号：JP2001202732A
公开(公告)日：2001-07-27
申请号：JP2000013889
申请日：2000-01-18
申请人： HITACHI LTD
发明人： TOKISUE HIROMITSU , TSUCHIYAMA RYUJI , MATSUMOTO MASAAKI , MIYAKE YOSHIHIKO , HASHIMOTO SEIJI
IPC分类号： G11B5/82 , G11B5/52 , G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To realize the floating quantity of 10 nm or lower by setting the reduction of a floating quantity equal to 2 nm or lower, and even to zero at a height of 3,000 m. SOLUTION: In the slider of a magnetic disk unit, by moving the application point of a positive pressure to an inlet end side, and that of a negative pressure to an outlet end side so as to increase the effect of the negative pressure to the outlet end, an effect to increase floating quantity is generated during pressure reduction. A slider is also provided for increasing the floating quantity during pressure reduction. According to claim, the application point of an equivalent pressing force is set at a position more inlet side than the application point of a positive pressure, and a distance between the application point of the positive pressure and the application point of the equivalent pressing force is set larger than 0.1 times slider total length.

89. 发明专利

JP2000353370A MAGNETIC HEAD SLIDER CAPABLE OF CONTROLLING FLOATING AMOUNT BY PRESSURE CONTROL GROOVE FORMED IN NEGATIVE PRESSURE GROOVE, AND MAGNETIC DISK DEVICE HAVING THE SAME LOADED 失效
公开(公告)号：JP2000353370A
公开(公告)日：2000-12-19
申请号：JP16271299
申请日：1999-06-09
申请人： HITACHI LTD
发明人： HASHIMOTO SEIJI , MATSUMOTO MASAAKI , ENDO MASAYOSHI , ATSUMI MASAHIRO
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To control the floating amount of a magnetic head slider by a pressure control groove formed in the negative pressure groove of the magnetic head slider. SOLUTION: A slider 1 is provided with rail surfaces 6, 7 and 11, step bearings 5, 8 and 9 deeper than the rail surfaces, a floating surface 3 composed of a negative pressure groove 12 deeper than each of the step bearings, an air inflow end 2, and an air outflow end 4. The slider is further provided with a front pad 13 formed by the rail surface and the step bearing in the air inflow end side, a rear pad formed from the rail surface and the step bearing in the air outflow end side and separated from the front pad by the negative pressure groove 12, a magnetic transducer 19 provided near the air outflow end of the rail surface of the rear pad, and a pressure control groove 30 formed in the negative pressure groove in the air inflow side of the rear pad so as to be deeper than the negative pressure groove. The pressure control groove forms a region surrounded with a straight line or a curve formed in the negative pressure groove, to reduce the amount of floating near the air outflow end.

90. 发明专利

JP2000298966A SUSPENSION FOR MAGNETIC HEAD 失效
公开(公告)号：JP2000298966A
公开(公告)日：2000-10-24
申请号：JP10620099
申请日：1999-04-14
申请人： HITACHI LTD
发明人： TAKAHASHI HARUHIDE , KOJIMA YASUO , SHIMIZU TAKEMASA , HIROSE SHINICHI , MATSUMOTO MASAAKI , HAMAGUCHI TETSUYA , ISHII TOMOKAZU
IPC分类号： G11B21/21 , G11B21/12 , G11B21/22
摘要： PROBLEM TO BE SOLVED: To surely realize loading/unloading by a suspension for magnetic head corresponding to a narrow disk space and to improve the reliability by reducing contact between a head and a disk at the time of unloading. SOLUTION: A lift tab 1 is formed in the front end part of a load beam 4, and hook 2 is formed by a flexure 3, and the contact position between the hook 2 and the load beam 4 is set to a position

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