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1. 发明授权

US5825577A Magnetic disk device for detecting a floating state of a magnetic head 失效
标题翻译：用于检测磁头浮动状态的磁盘装置
公开(公告)号：US5825577A
公开(公告)日：1998-10-20
申请号：US778125
申请日：1997-01-02
申请人： Masami Miyatake , Nobuyuki Okamoto , Susumu Ebihara
发明人： Masami Miyatake , Nobuyuki Okamoto , Susumu Ebihara
IPC分类号： G11B21/21 , G11B5/60 , G11B19/04
CPC分类号： G11B5/60
摘要： Gain information in a read amplifier, which is recorded when data to be measured is reproduced, is stored in an AGC control memory circuit in advance. By reproducing the data using the gain information, reproduced data varied according to the amount of flotation of a magnetic head and the position of the magnetic head alone can be obtained. A variation in voltage amplitude of the reproduced data is detected by an envelope signal generating circuit and a variation in phase difference between a reading cycle in which the reproduced data is read and a reference cycle is detected by a phase difference signal generating circuit. A calculator calculates a float interval of the magnetic head and a variation in the position thereof based on these detected variations. As a result, a decision can be made as to whether the float interval of the magnetic head and the variation in the position thereof exceed an allowable range. When it is judged that they have exceeded the allowable range, a warning is issued to a user so that the magnetic head and a magnetic disk can be prevented from breakage in advance.
摘要翻译：预先在AGC控制存储器电路中存储在被再现数据时记录的读取放大器中的增益信息。通过使用增益信息再现数据，可以获得根据磁头的浮选量和单独的磁头的位置而变化的再现数据。再现数据的电压幅度的变化由包络信号发生电路检测，读取周期中的读出周期与相位差信号发生电路检测到基准周期之间的相位差的变化。计算器基于这些检测到的变化来计算磁头的浮动间隔和其位置的变化。结果，可以做出关于磁头的浮动间隔和其位置的变化是否超出允许范围的决定。当判断为超过允许范围时，向用户发出警告，从而能够预先防止磁头和磁盘的破损。

2. 发明授权

US4841289A Interface circuit for adapting a multi-scan monitor to receive color display data from various types of computers 失效
标题翻译：接口电路，用于调整多扫描监视器以接收来自各种类型的计算机的彩色显示数据
公开(公告)号：US4841289A
公开(公告)日：1989-06-20
申请号：US047679
申请日：1987-05-06
申请人： Koji Kambayashi , Nobuyuki Okamoto , Kenichiro Kawanami
发明人： Koji Kambayashi , Nobuyuki Okamoto , Kenichiro Kawanami
IPC分类号： G09G5/18 , G09G1/00 , G09G1/16 , G09G1/28 , G09G5/04
CPC分类号： G09G1/167 , G09G1/285
摘要： A monitor interface circuit for adapting a color display monitor to a selected one of various types of computers which generate different types of color display data receives the display data and one of several horizontal scanning frequency signals from the computer and mixes the display data as a function of the one horizontal scanning frequency to thereby generate a proper display signal for the monitor.
摘要翻译：用于将彩色显示监视器适配成生成不同类型的彩色显示数据的各种类型的计算机中的所选择的监视器接口电路从计算机接收显示数据和若干水平扫描频率信号中的一个，并将显示数据作为一个功能的一个水平扫描频率，从而为监视器生成适当的显示信号。

3. 发明授权

US5757340A Amplifier with a second active element being cascode connected to a first active element and having a control electrode connected to a constant voltage 失效
标题翻译：具有第二有源元件的放大器是共源共栅连接到第一有源元件并且具有连接到恒定电压的控制电极
公开(公告)号：US5757340A
公开(公告)日：1998-05-26
申请号：US580518
申请日：1995-12-28
申请人： Nobuyuki Okamoto , Haruhisa Iida
发明人： Nobuyuki Okamoto , Haruhisa Iida
IPC分类号： H03F3/183 , H03F1/22 , H03F3/19 , H03F3/30 , H04N5/14 , H04N9/64 , G09G5/00 , H03F1/08 , H04N5/217
CPC分类号： H04N5/148 , H03F1/22 , H03F3/19 , H03F3/3067 , H04N9/648
摘要： An amplifier circuit in a display device for a monitor unit in a computer system or the like, includes first active element whose control electrode is supplied with a signal from an input terminal; a second active element cascade-connected to the first active element; a third active element so connected to the second active element that a junction thereof is connected to an output terminal; an impedance element disposed between the input terminal and the third active element and capable of changing the impedance in accordance with the frequency of the input signal; a first resistance element connected between the junction of the second and third active elements and the control electrode of the first active element; and a second resistance element connected between the input terminal and the control electrode of the first active element and serving to determine the signal amplification factor in cooperation with the first resistance element. Since the second active element is cascade-connected to the first active element, no manipulation is necessary for adjusting the component elements, and generation of any smear or sag resulting from variation of the feedback capacitance can be suppressed at low cost.
摘要翻译：在计算机系统等中用于监视器单元的显示装置中的放大器电路包括其控制电极被提供有来自输入端子的信号的第一有源元件; 级联连接到第一有源元件的第二有源元件; 第三有源元件，其连接到第二有源元件，其连接点连接到输出端子; 阻抗元件，设置在所述输入端子和所述第三有源元件之间，并且能够根据所述输入信号的频率改变所述阻抗; 连接在第二和第三有源元件的接点与第一有源元件的控制电极之间的第一电阻元件; 以及连接在第一有源元件的输入端子和控制电极之间的第二电阻元件，用于与第一电阻元件配合确定信号放大系数。由于第二有源元件级联连接到第一有源元件，因此不需要操纵来调整元件，并且可以以低成本抑制由反馈电容的变化引起的任何污迹或下垂的产生。

4. 发明授权

US5214509A Display device testing circuit using false video signal generator 失效
标题翻译：使用虚拟视频信号发生器显示设备测试电路
公开(公告)号：US5214509A
公开(公告)日：1993-05-25
申请号：US821042
申请日：1992-01-16
申请人： Nobuyuki Okamoto
发明人： Nobuyuki Okamoto
IPC分类号： G09G5/00 , G01R35/00 , G09G5/04 , G09G5/18 , H04N17/04
CPC分类号： G01R35/00 , H04N17/04
摘要： A display device testing circuit includes a false video signal generator for producing a false video signal from a blanking pulse of the display device in a state where no video signal is connected to an input terminal of the display device, so that such false video signal is supplied to the video amplifier. A false clamp pulse generating circuit produces a false clamp pulse from the blanking pulse and supplies the false clamp pulse to a pedestal clamper in the video amplifier, thereby realizing a simplified test of the video amplifier at low cost.

5. 发明授权

US5333019A Method of adjusting white balance of CRT display, apparatus for same, and television receiver 失效
标题翻译： CRT显示器的白平衡调整方法，电视机的设备
公开(公告)号：US5333019A
公开(公告)日：1994-07-26
申请号：US53228
申请日：1993-04-28
申请人： Nobuyuki Okamoto
发明人： Nobuyuki Okamoto
IPC分类号： H04N5/18 , H04N9/73 , H04N9/64
CPC分类号： H04N5/18 , H04N9/73
摘要： A method and apparatus for adjustment of the white balance of a CRT display system enabling white balance adjustment to be performed in a short time and a television receiver using the same. The white balance adjustment apparatus has a level adjustment circuit, an attenuation resistor, a video signal output circuit, a coupling capacitor, and a synchronous-signal-tip level clamp circuit and is connected to the cathode electrode. The level adjustment circuit has a variable amplifier which amplifies only the video signal component V, a synchronous signal separation circuit, a variable amplifier for causing attenuation of the horizontal synchronous signal H-SYNC, a signal addition circuit, and an AND gate. In the white balance adjustment mode, the ratio of levels of the video signal and synchronous signal is changed from the usual 0.714:0.218 to, for example, 0.714:0.005. By this, even when the drive voltage is adjusted in the synchronous-signal-tip level clamp circuit after the adjustment of the background in the level adjustment circuit, there is less change of the horizontal synchronous signal and there are, therefore, less number of tracking operations needed between the adjustment of the background and the adjustment of the drive voltage.
摘要翻译：一种用于调整能够在短时间内进行白平衡调整的CRT显示系统的白平衡的方法和装置，以及使用该CRT显示系统的电视接收机。白平衡调整装置具有电平调整电路，衰减电阻器，视频信号输出电路，耦合电容器和同步信号尖端电平钳位电路，并连接到阴极电极。电平调整电路具有只放大视频信号分量V的可变放大器，同步信号分离电路，用于使水平同步信号H-SYNC衰减的可变放大器，信号加法电路和与门。在白平衡调整模式中，视频信号和同步信号的电平比例从通常的0.714：0.218变为例如0.714：0.005。由此，即使在电平调整电路中的背景调整之后，在同步信号尖端电平钳位电路中调节驱动电压时，水平同步信号的变化较小，因此，在调整背景和调节驱动电压之间需要跟踪操作。

6. 发明授权

US4660110A Magnetic disk storage device with shroud enclosing disk assembly 失效
标题翻译：磁盘存储设备，带护罩包围盘组件
公开(公告)号：US4660110A
公开(公告)日：1987-04-21
申请号：US548515
申请日：1983-11-03
申请人： Muneo Iida , Jyosei Simizu , Masami Suzuki , Nobuyuki Okamoto , Toshinori Kazama , Masanobu Honda , Jiro Mochida , Seiji Tada , Masayuki Fujii
发明人： Muneo Iida , Jyosei Simizu , Masami Suzuki , Nobuyuki Okamoto , Toshinori Kazama , Masanobu Honda , Jiro Mochida , Seiji Tada , Masayuki Fujii
IPC分类号： G11B17/038 , G11B25/04 , G11B33/14 , G11B5/012
CPC分类号： G11B33/1446 , G11B17/038 , G11B25/043
摘要： A magnetic disk storage device capable of avoiding the occurrence of vibration of magnetic disks and off-track of magnetic heads with respect to the magnetic disks, including an inner shroud enclosing a disk assembly composed of a multiplicity of magnetic disks stacked in superposed relation with spacers being interposed therebetween and formed at its outer peripheral wall with first ports for inserting access arms therethrough and at its top above a spindle supporting the disk assembly with a second port, a cylindrical filter for removing dust from air flowing through the second port of the inner shroud into the interior thereof, and a dust cover enclosing the inner shroud, actuators and filter. The provision of the inner shroud is conductive to prevention of development of turbulent air flow in the vicinity of the magnetic disks. The inner shroud is further formed at its outer peripheral wall with a multiplicity of small apertures for releasing heat generated in the inner shroud to outside, to thereby avoid thermal off-track of the magnetic heads.
摘要翻译：一种磁盘存储装置，其能够避免相对于磁盘发生磁盘的振动和磁头的偏离磁道，包括封闭由与多个间隔堆叠叠置的多个磁盘组成的磁盘组件的内罩并且在其外周壁处形成有用于插入进入臂的第一端口，并且其顶部位于支撑具有第二端口的盘组件的主轴上;圆柱形过滤器，用于从流过内部的第二端口的空气中去除灰尘护罩进入其内部，以及包围内护罩，致动器和过滤器的防尘盖。内护罩的设置是导电的，以防止磁盘附近的湍流气流的发展。内护罩在其外周壁处进一步形成有多个小孔，用于将内护罩中产生的热释放到外部，从而避免了磁头的热偏离。

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