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111. 发明专利

JPS61104655A Semiconductor memory cell 失效
标题翻译：半导体存储器单元
公开(公告)号：JPS61104655A
公开(公告)日：1986-05-22
申请号：JP22573884
申请日：1984-10-29
申请人： Hitachi Ltd
发明人： HONMA NORIYUKI , NAKAMURA TORU , NAKAZATO KAZUO , MATSUMOTO MASAAKI , HAYASHIDA TETSUYA , KUBO SEIJI , SAGARA KAZUHIKO
IPC分类号： H01L29/73 , G11C11/41 , H01L21/331 , H01L21/8229 , H01L27/10 , H01L27/102 , H01L29/732
CPC分类号： H01L27/1025
摘要： PURPOSE:To obtain the small-sized memory cell reinforced in alpha-ray resistance which needs of addition of capacitors, by a method wherein a transistor is set in reverse action. CONSTITUTION:The conventional collector is used as the emitter of a transistor, and the conventional emitter as the collector. Therefore, a region n BL50 corresponds to an emitter 60 of the circuit diagram, and a region n BL51 to an emitter 61. (the emitters 60, 61 are regions n BL, which is shown by bold lines). This shows that electrons collecting to the regions n BL51, 51 collect to a bit line 62 and a word line 63, respectively; accordingly, these charges do not contribute to information breakdown. Then, with respect to the soft error caused by alpha rays, only charges generating in transistor parts (n , p, n parts) above the regions n BL can be considered, and the amount of charges generating in this part is much smaller than that in the Si p-substrate. Consequently, the title element becomes substantially strong to the soft error caused by alpha rays.
摘要翻译：目的：为了获得需要添加电容器的α射线电阻增强的小型存储单元，通过其中晶体管被设置为反向动作的方法。构成：传统的集电极用作晶体管的发射极，常规的发射极用作集电极。因此，区域n + BL50对应于电路图的发射极60，和发射极61的区域n + BL51（发射极60,61是区域n + BL，由粗线）。这表明收集到区域n + BL51,51的电子分别收集到位线62和字线63; 因此，这些费用不会对信息进行破坏。然后，对于由α射线引起的软误差，仅考虑在区域n + BL以上的晶体管部分（n +，p，n - ）部分产生的电荷，并且电荷量在该部分中的产生比Si p基板中的产生要小得多。因此，标题元素对于由α射线引起的软误差变得基本上很强。

112. 发明专利

JPS60156121A SEMICONDUCTOR CONSTANT-VOLTAGE CIRCUIT 失效
公开(公告)号：JPS60156121A
公开(公告)日：1985-08-16
申请号：JP1002784
申请日：1984-01-25
申请人： HITACHI LTD
发明人： MATSUMOTO MASAAKI
IPC分类号： G05F1/46
摘要： PURPOSE:To supply a stable voltage to a load by adding a capacitor and a resistance to the output of constant-voltage circuit, and absorbing and suppressing a potential variation. CONSTITUTION:To the output V-o of a constant-voltage circuit, capacitors C1- Cm for absorbing the variation of its output potential, and resistances RB1- RBm for stabilizing the variation by enlarging a potential difference between each load by the voltage drop, and also suppressing the variation by enlarging a time constant of the potential variation are added between a ground Vcc and each output terminal V-o1-V-om as shown in the figure. In such a way, when switching a load large current, a stable constant-voltage can be supplied to the load.

113. 发明专利

JPS6095790A SEMICONDUCTOR CURRENT SOURCE CIRCUIT 失效
公开(公告)号：JPS6095790A
公开(公告)日：1985-05-29
申请号：JP20093383
申请日：1983-10-28
申请人： HITACHI LTD
发明人： MATSUMOTO MASAAKI , HONMA NORIYUKI
IPC分类号： G11C11/414 , G11C11/34 , H03F3/34 , H03F3/347
摘要： PURPOSE:To decrease the dropping time of the potential of a signal line and to reduce the power consumption by producing a large current only when the signal line is changed to a low potential from a high potential and discharging quickly the capacity of the signal line. CONSTITUTION:When the anode of a diode D1 of a potential transmitting circuit 10 is changed to a low potential from a high potential, this change of potential is transmitted with no delay to the base of a PNP transistor TRQ3 of a pulse current source circuit 12 via a Schottky diode D2. While said potential change is transmitted to the base of an NPN TRQ2 of the cirfuit 12 via a potential delay circuit 14 after a delay time corresponding to a time constant obtained by a resistance R2 and a capacitor C1. Then the circuit 12 is turned on when the difference between bases of TRQ2 and Q3 is set at a prescribed level. Thus a large pulse current is produced via a constant current source I1, and the capacity of a signal line connected to a juncture part P is quickly discharged. This decreases the dropping time of the signal potential and also stops the flow of a large current in a steady mode. Thus the power consumption is reduced.

114. 发明专利

JPS59221890A SEMICONDUCTOR STORAGE CIRCUIT DEVICE 失效
公开(公告)号：JPS59221890A
公开(公告)日：1984-12-13
申请号：JP9571983
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 drive a storage device in high speed with low power consumption by connecting three sets of transistors (TRs) connected between word and hold lines in Darligton connection, flowing a current only at the selection and also quickening the charge/discharge of the word line. CONSTITUTION:In bringing a base of a TRQSn or the like to a high potential, a node SWn and a word line WDn go to a high potential and TRs QIn, QJn and QKn in Darlington connection between the line WDn and the hold line HLn via a level shift diode DIn and a resistor RIn for high time constant, etc. are turned on. Further, a current flows to the TRs only at the selection and the power consumption is reduced. Moreover, the base of the TRQIn is controlled by the diode DIn and the resistor RIn or the like, the charge/discharge of the node SWn via the TRQIn is attained in high speed, and the selection/nonselection of the line WDn is switched in high speed. Through the constitution above, the driving circuit of bipolar RAM is activated in high speed with low power consumption.

115. 发明专利

JPS58203695A Semiconductor driving circuit device 失效
标题翻译：半导体驱动电路设备
公开(公告)号：JPS58203695A
公开(公告)日：1983-11-28
申请号：JP8661882
申请日：1982-05-24
申请人： Hitachi Ltd
发明人： MATSUMOTO MASAAKI , KITSUKAWA GOROU
IPC分类号： G11C11/415 , G11C8/08
CPC分类号： G11C8/08
摘要： PURPOSE:To reduce the descending time of a subword line or word line and the consumption of electric power, and to realize high integration, by making a constitution so that operating current is supplied to the subword line or word line from a constant current source, only at selected time. CONSTITUTION:If the electric potential of both of input signals An1 and An2 becomes lower than a reference voltage V1, TRs Qa1 and Qa2 are turned off, electric potential Vn1 and also the electric potential Vn2 of a subword one Xn' and the electric potential Vn3 of a word line are turned over to be high electric potential. Since the electric potential Vn2 of the subword line selected at this moment, is higher than the electric potential of other subword lines which are in non-selected state, the current of constant current source consisting of a TR Qc and register Rc runs only through a diode Dn connected to the subword line Xn'. If one of the input signals An1 and An2 is turned over to be high electric potential to exceed the reference voltage V1, the electric potential Vn1 is turned over to be low electric potential to pull out stored electric charge of stray capacitance Cn with high speed. Since only one unit of constant current source is provided, low electric power consumption and high integration are realized.
摘要翻译：目的：为了减少字线或字线的下降时间和电力消耗，并实现高集成度，通过构成使得从恒流源向副字线或字线提供工作电流的结构，只在选定的时间。构成：如果输入信号An1和An2两者的电位变得低于参考电压V1，则关闭TRs Qa1和Qa2，将电位Vn1和子字Xn'的电位Vn2和电位Vn3 字线被翻转成高电位。由于此时所选择的副词线的电位Vn2高于未选择状态的其他子字线的电位，所以由TR Qc和寄存器Rc构成的恒流源的电流仅通过二极管Dn连接到子字线Xn'。如果输入信号An1和An2中的一个被转换为高电位以超过参考电压V1，则电位Vn1转为低电位以高速地拉出寄存电容Cn的存储电荷。由于只提供一个恒流源单元，实现了低功耗和高集成度。

116. 发明专利

JP2004234743A Magnetic head slider and magnetic disk device 有权
公开(公告)号：JP2004234743A
公开(公告)日：2004-08-19
申请号：JP2003021292
申请日：2003-01-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUCHIYAMA RYUJI , TANI KOUJI , TOKUYAMA MIKIO , KODAIRA HIDEKAZU , KURITA MASAYUKI , SHODA MITSUHIRO , JO KINKOKU , MATSUMOTO MASAAKI
IPC分类号： G11B5/60 , G11B21/21
CPC分类号： G11B5/6005
摘要： PROBLEM TO BE SOLVED: To simultaneously reduce vibration caused by the contact between a flat and smooth medium surface and a slider and fluctuation in the amount of floating caused by undulation of the medium surface and pressure change in the vicinity of the slider.
SOLUTION: Inflow pads 11 of a magnetic head slider are more protruded in the thickness direction of a slider 1 than an outflow pad 12, thereby obtaining the magnetic head slider and the magnetic disk device which are excellent to be made high in recording density, high in reliability and low in cost.
COPYRIGHT: (C)2004,JPO&NCIPI

117. 发明专利

JP2002203305A MAGNETIC HEAD SLIDER, ITS SUPPORT AND MAGNETIC HEAD DEVICE 失效
公开(公告)号：JP2002203305A
公开(公告)日：2002-07-19
申请号：JP2000401316
申请日：2000-12-28
申请人： HITACHI LTD
发明人： TSUCHIYAMA RYUJI , MATSUMOTO MASAAKI , HASHIMOTO SEIJI , JO KINKOKU
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To reduce a difference in floating amounts between floating profiles by providing the characteristic of no changes in floating amounts with respect to both of a peripheral speed change and a yaw angle change caused by the difference of a magnetic disk radial direction in a magnetic head slider. SOLUTION: A 2-stage stepped surface is provided through a step on the contact surface 112 of the flow-in pad 11 or the flow-out pad 12 of a magnetic head slider 1. When the depth of the stepped surface 114 of a first stage with respect to the contact surface 112 is δs, the depth of the stepped surface 116 of a second state is δr, the length of the slider 1 in an air flow-in direction is L, and a distance between the air flow flow-in end of the slider and a dimple position is xp, then 0.047

118. 发明专利

JPH11203809A SUSPENSION FOR MAGNETIC HEAD AND MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JPH11203809A
公开(公告)日：1999-07-30
申请号：JP538198
申请日：1998-01-14
申请人： HITACHI LTD
发明人： SUGAWARA SHUICHI , MATSUMOTO MASAAKI , WAKATSUKI KOSAKU , HAGITANI SHINOBU , SHIMIZU TOSHIHIKO
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a suspension for a magnetic head and a magnetic storage device realizing the reduction of gimbal rigidity, the securement of gimbal strength and the improvement of vibration property. SOLUTION: In a suspension 9 for a magnetic head consisting of a mounting part 1 to a carriage arm, a 1st spring part 3 and a 2nd spring part 5 for generating the load and a gimbal part 6 for supporting a load beam part 4 and a magnetic head slider 7 recording or reproducing a signal against a magnetic recording medium, the 2nd spring part 5 is made to a contracted structure connecting the load beam part 4 and the gimbal part 6.

119. 发明专利

JPH10302238A MAGNETIC HEAD SLIDER AND ITS MANUFACTURE 失效
公开(公告)号：JPH10302238A
公开(公告)日：1998-11-13
申请号：JP10443597
申请日：1997-04-22
申请人： HITACHI LTD
发明人： SONOBE HIDEKI , MIZUSHIMA AKIKO , KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , FURUSAWA KENJI
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head slider which enables reduction in an adhesive force of magnetic slider for a magnetic recording medium and prevention of thermal asperity(T.A.) trouble, and also provide a method of manufacturing the same and a magnetic disk apparatus. SOLUTION: At least three projections 7 are provided to sandwich a load point 18 on a slider rail surface 3 near the air incoming end 9 and air outgoing end 10 of a magnetic head slider 1, height of projection is set to 20 to 70 nm and total surface area of projection in contact with the magnetic recording medium surface is set to 0.005 to 0.15 mm , these projections come in contact with the magnetic recording medium surface at the time when the magnetic recording medium rotation is stopped, and the slider rail surface does not come in contact with it but is isolated from the magnetic recording medium. Therefore, a magnetic disk apparatus can easily be realized in which an adhesive force for the magnetic recording medium can be reduced, T.A. trouble can be prevented effectively in the magnetic head slider comprising particularly an MR head, and high density recording by a smooth magnetic recording medium can be realized.

120. 发明专利

JPH10293983A SLIDER AND MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH10293983A
公开(公告)日：1998-11-04
申请号：JP10000597
申请日：1997-04-17
申请人： HITACHI LTD
发明人： KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , HASHIMOTO SEIJI , ENDO MASAYOSHI , ATSUMI MASAHIRO , AMATATSU ATSUSHI , FURUSAWA KENJI , MIZUSHIMA AKIKO , SONOBE HIDEKI , HIGUCHI SHINSUKE , TANI KOUJI
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To reduce an attracting force generated between a slider stopped on a magnetic disk and the magnetic disk by forming a projection in a rail surface for generating a floating force and a polygonal groove in the surface of the projection opposite to the magnetic disk. SOLUTION: A groove part 8 is formed for generating a negative pressure force by separating rail parts from each other, projections 9 and 10 are formed in the vicinity of tapered parts on side rails 4 and 5 and a projection 11 is formed in an air flow-in end side on a center rail. Plural hexagonal grooves 12 are formed in surfaces opposite to these projections and, by further forming grooves in the projecting surfaces, compared with the case of forming simple projections on the rail surfaces, contact areas between the projections and the magnetic disk at the time of device stop are reduced. Also, lubricating agents coated on the magnetic disk are efficiently supplied to the grooves formed in the opposite surfaces of the projections, and thus the wearing of each of the projections is reduced.

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