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1. 发明申请

WO1998001940A1 POWER CONVERTER 审中-公开
标题翻译：电源转换器
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
申请人： HITACHI, LTD. , MIYAZAKI, Hideki , SUZUKI, Katsunori , SUGIYAMA, Shigeru
发明人： HITACHI, LTD.
IPC分类号： H02M07/48
CPC分类号： H02M7/487 , H02M1/34 , H02M7/538 , H02M2001/346 , H03K17/08148 , H03K2217/0036 , Y02B70/1491
摘要： 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.
摘要翻译：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。

2. 发明申请

WO1997050162A1 MOTOR DRIVING APPARATUS 审中-公开
标题翻译：电机驱动装置
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
申请人： HITACHI, LTD. , MIYAZAKI, Hideki , SUZUKI, Katsunori
发明人： HITACHI, LTD.
IPC分类号： H02H07/08
CPC分类号： H02P1/30 , H02H7/08
摘要： 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.
摘要翻译：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，

3. 发明申请

WO1996031844A1 GRAPHICS SYSTEM 审中-公开
标题翻译：图形系统
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
申请人： HITACHI, LTD. , KOGA, Kazuyoshi , FUJITA, Ryoo , KATSURA, Kooyoo , SUZUKI, Katsunori , KUWANA, Toshiyuki
发明人： HITACHI, LTD.
IPC分类号： G06T15/50
CPC分类号： G06T15/503 , G06T11/00
摘要： 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.
摘要翻译：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。

4. 发明申请

WO2013160935A1 COMPUTER SYSTEM, STORAGE APPARATUS AND DATA TRANSFER METHOD 审中-公开
标题翻译：计算机系统，存储设备和数据传输方法
公开(公告)号：WO2013160935A1
公开(公告)日：2013-10-31
申请号：PCT/JP2012/002800
申请日：2012-04-24
申请人： HITACHI, LTD. , SUZUKI, Katsunori , NASU, Hiroshi , SHINOHARA, Daisuke
发明人： SUZUKI, Katsunori , NASU, Hiroshi , SHINOHARA, Daisuke
IPC分类号： G06F3/06
CPC分类号： G06F11/1448 , G06F3/0608 , G06F3/0613 , G06F3/0619 , G06F3/065 , G06F3/0665
摘要： Speed of processing of transferring data stored in a storage apparatus to an external apparatus is increased. A storage apparatus according to the present invention: creates a non-decompression volume set to refer to a compression pool that compresses and stores data; decompresses and provides the data stored in the compression pool to a host computer; and provides the compressed data as is to other external apparatuses via the non-decompression volume.
摘要翻译：将存储在存储装置中的数据传送到外部装置的处理速度增加。根据本发明的存储装置：创建非压缩卷集，以指代压缩和存储数据的压缩池; 解压缩并将存储在压缩池中的数据提供给主机; 并且经由非解压缩卷将压缩数据按原样提供给其他外部设备。

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