公开(公告)号：WO1998001940A1

公开(公告)日：1998-01-15

申请号：PCT/JP1996001869

申请日：1996-07-05

Applicant: HITACHI, LTD. ,  MIYAZAKI, Hideki ,  SUZUKI, Katsunori ,  SUGIYAMA, Shigeru

Inventor： HITACHI, LTD.

IPC: H02M07/48

CPC classification number: H02M7/487 ,  H02M1/34 ,  H02M7/538 ,  H02M2001/346 ,  H03K17/08148 ,  H03K2217/0036 ,  Y02B70/1491

Abstract: A power converter such that overvoltage at switching time is suppressed and the loss is lowered by means of a snubber circuit for a power semiconductor device and noise malfunction of the control circuit provided near the power semiconductor device due to high frequency current is suppressed. In the power converter in which first and second self-extinguishing semiconductor devices are connected in series between the terminals of a main power source in a bridge circuit, at least two capacitive elements are connected in series between one end of the bridge and the node of the semiconductor devices and a switching element which conducts when the capacitive elements shift to a charged state from a discharged state is provided in parallel with one of the capacitive elements. The other capacitive element is connected to both ends of the bridge through a resistance means.

Abstract translation: 能够抑制开关时的过电压，通过用于功率半导体器件的缓冲电路来降低损耗的电力转换器，抑制由于高频电流而设置在功率半导体器件附近的控制电路的噪声故障。 在其中第一和第二自熄半导体器件串联连接在桥式电路中的主电源的端子之间的功率转换器中，至少两个电容元件串联连接在桥的一端和节点之间 半导体器件和当电容元件从放电状态转移到充电状态时导通的开关元件与电容元件中的一个并联设置。 另一个电容元件通过电阻装置连接到桥的两端。

公开(公告)号：WO1997050162A1

公开(公告)日：1997-12-31

申请号：PCT/JP1996001763

申请日：1996-06-26

Applicant: HITACHI, LTD. ,  MIYAZAKI, Hideki ,  SUZUKI, Katsunori

Inventor： HITACHI, LTD.

IPC: H02H07/08

CPC classification number: H02P1/30 ,  H02H7/08

Abstract: An inverter type driving apparatus for variable-speed control of a motor, and more particularly to a motor driving apparatus which restricts an overcurrent and the stop of the apparatus due to the overcurrent at the start of the motor operation and during acceleration. This motor driving apparatus, for driving an inverter connected to a D.C. power source in accordance with a desired output voltage and a desired output frequency, includes a current detection circuit for detecting a current supplied to the inverter from the D.C. power source, an overcurrent limiting circuit for limiting a current flowing through an output stage power device of the inverter to a level below the overcurrent level in accordance with a command from the current detection circuit to continue the operation of the inverter, and a control circuit for changing the amplitude of a carrier wave of PWM control in accordance with the period or frequency of the operation of the overcurrent limiting circuit. Alternatively, the driving apparatus includes a current detection circuit for detecting a current supplied from the D.C. power source to the inverter, an overcurrent limiting circuit for limiting a current flowing through an output stage power device of the inverter to a level below the overcurrent level in accordance with a command from the current detection circuit to continue the operation of the inverter, and a controlling circuit for changing an output voltage or an output frequency in accordance with the period or frequency of the operation of the overcurrent limiting circuit, wherein the overcurrent limiting circuit includes a current polarity detection circuit for detecting the polarity of the current outputted from each phase of the inverter in accordance with the output voltage and an ON signal of an arm in each phase, and a judgement circuit for specifying an arm in accordance with the command of the current polarity detection circuit of each phase and turning OFF the specified arm when the current detection circuit detects the current limit value.

Abstract translation: 一种用于电动机的变速控制的逆变器型驱动装置，更具体地说涉及一种电动机驱动装置，该电动机驱动装置在马达运转开始时和加速期间由于过电流而限制过电流和停止装置。 该电动机驱动装置，用于根据期望的输出电压和期望的输出频率驱动连接到直流电源的逆变器，包括用于从直流电源检测提供给逆变器的电流的电流检测电路，过电流限制 电路，用于根据来自电流检测电路的指令将逆变器的输出级功率器件的电流限制在低于过电流电平的电平，以继续逆变器的操作;以及控制电路，用于改变 根据过电流限制电路的工作周期或频率进行PWM控制的载波。 或者，驱动装置包括用于检测从直流电源提供给逆变器的电流的电流检测电路，用于将流过逆变器的输出级功率器件的电流限制在低于过电流水平的电平的过电流限制电路 根据来自当前检测电路的命令继续逆变器的操作;以及控制电路，用于根据过电流限制电路的操作的周期或频率改变输出电压或输出频率，其中过电流限制 电路包括电流极性检测电路，用于根据每相中的臂的输出电压和ON信号来检测从逆变器的每相输出的电流的极性，以及判断电路，用于根据 指令每相的电流极性检测电路，并关闭规格 当电流检测电路检测到电流极限值时，

公开(公告)号：WO1996031844A1

公开(公告)日：1996-10-10

申请号：PCT/JP1995000659

申请日：1995-04-05

Applicant: HITACHI, LTD. ,  KOGA, Kazuyoshi ,  FUJITA, Ryoo ,  KATSURA, Kooyoo ,  SUZUKI, Katsunori ,  KUWANA, Toshiyuki

Inventor： HITACHI, LTD.

IPC: G06T15/50

CPC classification number: G06T15/503 ,  G06T11/00

Abstract: A graphics system in which processing speed can be improved by merely increasing the number of drawing mechanisms when an image containing a transparent object is generated. The graphics system comprises synthesizing means that includes a plurality of drawing mechanisms each comprising a geometric processor, a rendering processor and a frame memory for holding color, depth and weight information in a bit map form of a screen. The synthesizing means first compares the depth information from the color, depth and weight information of the same pixel position (the same address) read out from the frame memory of each drawing mechanism, multiplies the weight information by the color information from the figure on the front side, and generates a new pixel information, in this way, transparent objects can be merged.

Abstract translation: 一种图形系统，其中当生成包含透明对象的图像时，仅通过增加绘图机构的数量可以提高处理速度。 图形系统包括合成装置，其包括多个绘图机构，每个绘图机构包括几何处理器，渲染处理器和用于以屏幕的位图形式保持颜色，深度和重量信息的帧存储器。 合成装置首先比较从每个绘图机构的帧存储器读出的相同像素位置（相同地址）的颜色，深度和重量信息的深度信息，将加权信息乘以来自图中的图形的颜色信息 并且生成新的像素信息，以这种方式可以合并透明对象。

公开(公告)号：WO1999031877A1

公开(公告)日：1999-06-24

申请号：PCT/JP1997004588

申请日：1997-12-12

Applicant: HITACHI, LTD. ,  YAMASAKI, Masami ,  TAKEDA, Haruo

Inventor： HITACHI, LTD.

IPC: H04N05/74

CPC classification number: H04N9/3147 ,  H04N9/12

Abstract: A multi-projection image display device using a plurality of image projectors to form one picture on a screen, in which images projected from the projectors are smoothly connected with one another, so that seams of the images do not appear conspicuously. The image display device has projectors (0121, 0122, 0123, 0124) and a screen (0140) laid out in such a manner that maximum image projection ranges (0151, 0152, 0153, 0154) of the respective projectors ovelap the adjacent ranges. An image signal control unit (0110) for processing an image signal supplied from an external image input (0180) has, therein, a member for cutting out a partial image area dealt with by each projector, an image converting member for performing geometric transformation and local color correction of the partial image, and an arithmetic control member for controlling the image converting member on the basis of image information inputted from a screen state monitor camera (0130). With this structure, smoothing of the seams between the images may be realized simply by image signal processing, and precise adjustment of the optical system of the projectors becomes unnecessary.

Abstract translation: 一种多投影图像显示装置，其使用多个图像投影仪在屏幕上形成一个图像，其中从投影仪投影的图像彼此平滑地连接，使得图像的接缝不显着。 图像显示装置具有投影仪（0121，0122，0123，0124）和以相应投影仪的最大图像投影范围（0151,022,033,0154）相邻范围的方式布置的屏幕（0140）。 一种用于处理从外部图像输入（0180）提供的图像信号的图像信号控制单元（0110），其中具有用于切割由每个投影仪处理的部分图像区域的部件，用于执行几何变换的图像转换部件， 部分图像的局部颜色校正，以及用于基于从屏幕状态监视摄像机（0130）输入的图像信息来控制图像转换部件的运算控制部件。 利用这种结构，可以简单地通过图像信号处理来实现图像之间的接缝的平滑化，并且不需要投影仪的光学系统的精确调整。

公开(公告)号：WO1999031656A1

公开(公告)日：1999-06-24

申请号：PCT/JP1997004586

申请日：1997-12-12

Applicant: HITACHI, LTD. ,  DAVID, Djulianto Djayaprawira ,  ISHIKAWA, Akira ,  KOJIMA, Shuuichi ,  MATSUDA, Yoshibumi ,  YAHISA, Yotsuo ,  SUZUKI, Hiroyuki

Inventor： HITACHI, LTD.

IPC: G11B05/66

CPC classification number: G11B5/012

Abstract: The ratio BrOR of the residual magnetic flux density in a circumferential direction to the residual magnetic flux density in a radial direction is 0.95 - 1.05 and the ratio HcOR of the coercive force in a circumferential direction to the coercive force in a radial direction is 1.05 - 1.2 in the substrate surface of a magnetic recording medium. Therefore, a high output resolution, a low medium noise and a high track recording density are simultaneously achieved in recording at a high line recording density. When a magnetic storage apparatus is constituted by using a high S/N magnetic recording medium like this, a magnetic disc apparatus which has a high surface recording density, is low in cost and small in size, and a large capacity and a high reliability can be provided.

Abstract translation: 圆周方向的剩余磁通密度与径向残留磁通密度的比率BrOR为0.95〜1.05，圆周方向的矫顽力的比率HcOR与径向的矫顽力的比值为1.05〜 1.2在磁记录介质的基板表面中。 因此，在高线路记录密度的记录中同时实现高输出分辨率，低中等噪声和高记录密度。 当通过使用这样的高S / N磁记录介质构成磁存储装置时，具有高表面记录密度的磁盘装置成本低，尺寸小，容量大，可靠性高 提供。

公开(公告)号：WO1999031608A1

公开(公告)日：1999-06-24

申请号：PCT/JP1997004620

申请日：1997-12-16

Applicant: HITACHI, LTD. ,  SHIMIZU, Isao ,  SATOU, Masayuki

Inventor： HITACHI, LTD.

IPC: G06F17/50

CPC classification number: G06F17/5022

Abstract: A method for developing a system board using a semiconductor integrated circuit device, wherein the development of a system board is made before the development of the circuit device used for the system board is actually acquired by verifying (S31 and S32) whether or not the system board meets the target specifications of the system board by carrying out simulation using a device model in which the functions of the circuit device are modeled by using a function describing language in such a way that the target specifications of the circuit device can be met and the description of the state of the external interface of the circuit device defined conformable to the target specifications. Since the device model in which the functions of the circuit device are described meets the target specifications of the circuit device, the device model is simulated together with the description of the interface state, whether or not the circuit part related to the description of the state of the interface, namely, the interface with the circuit device is appropriate can be verified from the results of the simulation, and the design of the system board can be carried out before the completion of the development of the circuit device or the device is acquired.

Abstract translation: 一种用于使用半导体集成电路器件开发系统板的方法，其中系统板的开发是在通过验证（S31和S32）是否实际获取用于系统板的电路器件的开发之前进行的（S31和S32） 通过使用使用功能描述语言来对电路装置的功能进行建模的装置模型进行仿真来实现系统板的目标规格，使得可以满足电路装置的目标规格和 描述符合目标规格的电路设备外部接口的状态。 由于描述了电路装置的功能的装置模型符合电路装置的目标规格，因此将与接口状态的描述一起模拟装置模型，无论电路部分是否与状态描述相关 的接口，即与电路设备的接口是合适的，可以从仿真结果中验证，并且系统板的设计可以在完成电路设备或设备的开发之前进行 。

公开(公告)号：WO1999027646A1

公开(公告)日：1999-06-03

申请号：PCT/JP1997004248

申请日：1997-11-21

Applicant: HITACHI, LTD. ,  SAKAMOTO, Kozo ,  KATSUEDA, Mineo ,  YOSHIDA, Isao ,  HOTTA, Masao

Inventor： HITACHI, LTD.

IPC: H03F03/60

CPC classification number: H01L24/05 ,  H01L23/66 ,  H01L24/06 ,  H01L24/48 ,  H01L24/49 ,  H01L24/73 ,  H01L2223/6611 ,  H01L2223/6644 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05 ,  H01L2224/05554 ,  H01L2224/32225 ,  H01L2224/48095 ,  H01L2224/48101 ,  H01L2224/48227 ,  H01L2224/4847 ,  H01L2224/48472 ,  H01L2224/49113 ,  H01L2224/49175 ,  H01L2224/73265 ,  H01L2924/00014 ,  H01L2924/01058 ,  H01L2924/01074 ,  H01L2924/14 ,  H01L2924/15153 ,  H01L2924/1517 ,  H01L2924/3011 ,  H03F3/601 ,  H01L2924/00 ,  H01L2924/00012 ,  H01L2224/85399 ,  H01L2224/05599

Abstract: A high-frequency power amplifier circuit device, with the frequency of the operating band between 500 MHz and approximately 10 GHz and power level of not lower than 0.5 W, has a problem to be settled that no increase in power level can be expected in proportion to the increase in the gate width of a power transistor. In addition to the solution of the above problem, an optimal high-frequency power amplifier circuit device and a high-frequency transmission system using the device are constituted to reduce the space in the matching circuit, to improve the linearity and to prevent oscillation in a power transistor (10) and an input/output matching circuit in such a way that the grounds (2) and (4) of an input-side strip line (61) and output-side strip line (62) are separated from each other and the grounds (2) and (4) are respectively connected to an input-side ground electrode (24a) and output-side ground electrode (23a) provided on a semiconductor chip carrying the power transistor (10). Consequently, the effective source impedance component which has been the cause of the deterioration of high-frequency power amplifier circuit in mutual conductance can be reduced.

Abstract translation: 具有500MHz至约10GHz之间的工作频带的频率和不低于0.5W的功率电平的高频功率放大器电路装置有一个问题需要解决，不能预期功率级别的增加可以按比例 到功率晶体管的栅极宽度的增加。 除了上述问题的解决之外，还构成了使用该装置的最佳高频功率放大器电路装置和高频传输系统，以减小匹配电路中的空间，从而提高线性度和防止振荡 功率晶体管（10）和输入/输出匹配电路，使得输入侧带状线（61）和输出侧带状线（62）的接地（2）和（4）彼此分离 并且接地（2）和（4）分别连接到设置在承载功率晶体管（10）的半导体芯片上的输入侧接地电极（24a）和输出侧接地电极（23a）。 因此，可以降低高频功率放大器电路在互导中的恶化的有效源阻抗分量。

公开(公告)号：WO1999021789A1

公开(公告)日：1999-05-06

申请号：PCT/JP1997003875

申请日：1997-10-24

Applicant: HITACHI, LTD. ,  SAKAI, Mitsuru ,  MATSUURA, Atsushi ,  ONODERA, Minoru ,  IIDA, Takaaki ,  SHIBATA, Tadashi ,  TAKEDA, Kazutoshi

Inventor： HITACHI, LTD.

IPC: B66B13/30

CPC classification number: B66B13/08 ,  E05D15/0626 ,  E05Y2900/104

Abstract: A door device for elevators, in which a door is hung by a door hanger and driven in a horizontal direction, is constructed such that two adjacent different planes connect the door and the door hanger to each other in order to provide a simple construction of the door device for elevators, in which a connection between the door and the door hanger is not easily bent.

Abstract translation: 门被挂在门架上并沿水平方向驱动的电梯的门装置被构造成使得两个相邻的不同的平面将门与门挂架相互连接，以便提供简单的结构 电梯的门装置，其中门和门吊架之间的连接不容易弯曲。

公开(公告)号：WO1999017302A1

公开(公告)日：1999-04-08

申请号：PCT/JP1997003502

申请日：1997-10-01

Applicant: HITACHI, LTD. ,  UETAKE, Naohito ,  WADA, Yoichi

Inventor： HITACHI, LTD.

IPC: G21D01/00

CPC classification number: G21C17/0225 ,  G21Y2002/103 ,  G21Y2004/20

Abstract: Water quality control method used when hydrogen is injected into reactor water of a BWR plant. Even if low concentration hydrogen is injected, SCC of the core internals can be suppressed and, further, local corrosion can be avoided. A metal oxide which reacts as an oxidation catalyst of hydrogen is applied to the surfaces of the core internals of a boiling water reactor beforehand and then hydrogen is injected into the reactor water with which the core internals are in contact.

Abstract translation: 将氢气注入BWR工厂的反应堆水中时使用的水质控制方法。 即使注入低浓度的氢，也可以抑制芯内部的SCC，进一步避免局部腐蚀。 将作为氢氧化催化剂反应的金属氧化物预先施加到沸水反应堆的核心内部表面，然后将氢气注入核心内部与之接触的反应器水中。

公开(公告)号：WO1999016193A1

公开(公告)日：1999-04-01

申请号：PCT/JP1997003337

申请日：1997-09-19

Applicant: HITACHI, LTD. ,  KIMURA, Yoshinobu ,  MIYAO, Masanobu ,  NAKAGAWA, Kiyokazu ,  SUGII, Nobuyuki ,  MARUIZUMI, Takuya

Inventor： HITACHI, LTD.

IPC: H04B10/12

CPC classification number: H04B10/564 ,  G02B6/3636 ,  G02B6/3652 ,  G02B6/4202 ,  H01S5/0262 ,  H01S5/0264 ,  H01S5/0425 ,  H01S5/1228 ,  H04B10/291 ,  H04B10/504

Abstract: Optical signal communication equipment and optical communication system which can be suitably used even when the transmitting speed and capacity of information transmitted by using optical signals are increased. On the optical signal transmitting side, signal light is generated by causing induced emission in an active medium by supplying exciting light to the medium in accordance with transmitting signals. The exciting light is supplied to the active medium in such a way that naturally emitted light is made incident to a semiconductor layer and the component of the light having a specific wavelength is Bragg-reflected by modulating the refractive index of the semiconductor layer by impressing the voltage pulse correspdoning to the transmitting information upon the semiconductor layer, and then, the reflected light is supplied to the medium as the exciting light. Since the Bragg reflection and associated induced emission show excellent responsiveness to voltage signals having pulses widths of 1x10 second on shorter, an optical communication system which can transmit optical signals at a transmitting speed of up to 100 Gb/s can be realized.

Abstract translation: 即使当使用光信号发送的信息的发送速度和容量增加时，也可适当使用的光信号通信设备和光通信系统。 在光信号发送侧，根据发送信号，通过向有源介质引起感应发射，向介质供给激励光，从而产生信号光。 将激发光以这样的方式提供给有源介质，使得自然发射的光入射到半导体层，并且具有特定波长的光的分量通过调制半导体层的折射率而被布拉格反射， 电压脉冲对应于半导体层上的发送信息，然后将反射光作为激发光提供给介质。 由于布拉格反射和相关联的感应发射对较短的具有1×10 -9秒的脉冲宽度的电压信号具有优异的响应性，因此可以实现以高达100Gb / s的发送速度传输光信号的光通信系统 。