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公开(公告)号：US5558571A
公开(公告)日：1996-09-24
申请号：US262334
申请日：1994-06-17
申请人： Takeshi Toyoshima , Yo Kawakami , Hiroyasu Ishikawa , Takao Abe , Satsuo Sato , Nobuhiro Noto , Tadahiro Kaneko , Takayoshi Kaneta , Juurou Kobayahsi , Osamu Kawanobe
发明人： Takeshi Toyoshima , Yo Kawakami , Hiroyasu Ishikawa , Takao Abe , Satsuo Sato , Nobuhiro Noto , Tadahiro Kaneko , Takayoshi Kaneta , Juurou Kobayahsi , Osamu Kawanobe
CPC分类号： B24B23/02 , B24B45/006
摘要： A grinder has a grinding member. The grinder includes a rotatable spindle having an engagement portion. A first flange engages the engagement portion of the spindle. The first flange and the engagement portion of the spindle define a given play therebetween in a direction of rotation. The grinding member is held between the first flange and a second flange. A lubricant solid material is provided between the first flange and the engagement portion of the spindle.
摘要翻译： 研磨机具有研磨部件。 研磨机包括具有接合部分的可旋转主轴。 第一凸缘接合主轴的接合部分。 主轴的第一凸缘和接合部分在旋转方向上限定给定的间隙。 磨削构件保持在第一凸缘和第二凸缘之间。 润滑剂固体材料设置在第一凸缘和主轴的接合部分之间。
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公开(公告)号：US07123941B2
公开(公告)日：2006-10-17
申请号：US10083508
申请日：2002-02-27
申请人： Tadayuki Fukuhara , Hiroyasu Ishikawa , Takayuki Warabino , Naoki Fuke , Keizo Sugiyama , Hideyuki Shinonaga
发明人： Tadayuki Fukuhara , Hiroyasu Ishikawa , Takayuki Warabino , Naoki Fuke , Keizo Sugiyama , Hideyuki Shinonaga
摘要： A radio LAN master station system which provides long distance communication and suffers from small interference by another system located inside and/or outside of a service area comprises a transceiver, and a plurality of directional antennas each directed to a respective section with some angular spacing, through a power distributor which couples said transceiver with said antennas. Polarization plane of any antenna is orthogonal to polarization plane of an adjacent antenna.
摘要翻译： 提供长距离通信并受到位于服务区域内部和/或外部的另一系统的小干扰的无线电LAN主站系统包括收发器和多个定向天线，每个定向天线各自指向具有一定角度间隔的相应部分， 通过将所述收发器与所述天线耦合的电力分配器。 任何天线的极化平面与相邻天线的极化平面正交。
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3.发明授权公开(公告)号：US06785248B2
公开(公告)日：2004-08-31
申请号：US09736318
申请日：2000-12-15
IPC分类号： H04Q700
摘要： In each of communication stations, among all of spread spectrum signal waves having the carrier frequencies separated from each other in units of an integer multiple of the frequency amount R, all the spread spectrum signal waves having the carrier frequencies separated from each other in units of an even-number multiple of the frequency amount R are converged into a first group; all the spread spectrum signal waves that are adjacent to the aforementioned spread spectrum signal waves and that have the carrier frequencies separated in units of an even-number multiple of the frequency amount R are converged into a second group; and the first and the second groups of spread spectrum signal waves are simultaneously transmitted according to orthogonal polarized waves to perform information transmission.
摘要翻译： 在每个通信站中，在以频率量R的整数倍为单位的载波频率彼此分离的全部扩频信号波中，具有彼此分离的载波频率的所有扩频信号波单位为 频率量R的偶数倍收敛到第一组中; 与上述扩频信号波相邻并且具有以频率量R的偶数倍为单位的载波频率分离的所有扩频信号波被收敛成第二组; 并且根据正交偏振波同时发送第一组和第二组扩频信号波，以执行信息传输。
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公开(公告)号：US5774462A
公开(公告)日：1998-06-30
申请号：US907777
申请日：1997-08-11
申请人： Hiroyasu Ishikawa , Hideo Kobayashi
发明人： Hiroyasu Ishikawa , Hideo Kobayashi
CPC分类号： H04J3/0608 , G06F7/02 , H04L7/042 , G06F2207/025
摘要： In a time division multiplex (TDM) signal in which a symbol is sent one by one periodically, a unique word in the TDM signal is recognized quickly in a receiving station. A receive station has essentially N number of correlators each having a specific unique word pattern. A unique word pattern in each correlator is obtained by shifting by predetermined symbols cyclically from a reference unique word pattern. Each correlator provides a correlation value between a received TDM signal which includes a unique word and a unique word pattern defined in the correlator. Among outputs of N number of correlation values, which exceed a predetermined threshold value, the correlator which provides the maximum correlation value is selected, and the receive timing of the unique word is determined by the correlator thus selected.
摘要翻译： 在周期性地逐个发送符号的时分复用（TDM）信号中，TDM信号中的唯一字在接收站中被快速识别。 接收站具有基本上N个相关器，每个具有特定唯一的字模式。 通过从参考唯一字模式循环移位预定符号，可获得每个相关器中的唯一字模式。 每个相关器在包括唯一字的接收TDM信号和在相关器中定义的唯一字模式之间提供相关值。 在N个相关值的超过预定阈值的输出中，选择提供最大相关值的相关器，并且由所选择的相关器确定唯一字的接收定时。
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5.发明授权Selection diversity system using decision feedback equalizer in digital mobile telecommunication systems 失效在数字移动电信系统中使用决策反馈均衡器的选择分集系统
公开(公告)号：US5455844A
公开(公告)日：1995-10-03
申请号：US181197
申请日：1994-01-13
申请人： Hiroyasu Ishikawa , Hideo Kobayashi
发明人： Hiroyasu Ishikawa , Hideo Kobayashi
摘要： A selection diversity system using a decision feedback equalizer which has excellent tracking ability performance and equalization ability performance for frequency selective fading and a diversity effect against Rayleight fading. In a selection diversity system using a decision feedback equalizer, a decision data symbol of the equalizer output of a branch in which an average estimation error over a plurality of symbols is minimum is selected and combined, and the selected decision data symbol is used to recalculate the estimation error of every decision feedback equalizer and the tap gain coefficient of the decision feedback equalizer is updated using the recalculated estimation error, thereby overcoming the step out by the integration of the estimation error and the random selection error which is caused by the selective combined diversity system.
摘要翻译： 一种使用判决反馈均衡器的选择分集系统，其对于频率选择性衰落具有优异的跟踪能力性能和均衡能力性能以及对瑞利衰落的分集效应。 在使用判决反馈均衡器的选择分集系统中，选择并组合多个符号中的平均估计误差最小的分支的均衡器输出的判定数据符号，并且使用所选择的判定数据符号重新计算 使用重新计算的估计误差来更新每个判决反馈均衡器的估计误差和判定反馈均衡器的抽头增益系数，从而克服由选择性组合引起的估计误差和随机选择误差的积分 多样性系统。
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公开(公告)号：US6154506A
公开(公告)日：2000-11-28
申请号：US070931
申请日：1998-05-01
CPC分类号： H04L7/0334 , H04L7/0331
摘要： A timing recovery and tracking method and apparatus with respect to data signal in a digital communication system is provided. The method includes a step of setting a time window for making a decision based upon a predetermined threshold level, the time window having a time period corresponding to a transmission data rate in the digital communication system, a step of detecting a time duration positioned within the time window, a level of a received signal being higher than the predetermined threshold level during the time duration, a step of assuming a substantially middle point of the time duration as an optimum decision point of the received signal, and a step of updating the time window so that the updated time window has its center at a position of the assumed optimum decision point.
摘要翻译： 提供了一种关于数字通信系统中的数据信号的定时恢复和跟踪方法和装置。 该方法包括以下步骤：基于预定阈值水平设置用于进行判定的时间窗口，该时间窗口具有与数字通信系统中的传输数据速率对应的时间段，检测位于该数据通信系统内的时间段的步骤 在所述持续时间期间接收信号的电平高于所述预定阈值电平的步骤，将所述持续时间的大致中点作为所述接收信号的最佳判定点的步骤，以及更新所述时间窗口的步骤 窗口，使得更新的时间窗口的中心位于假定的最佳决策点的位置。
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7.发明授权Dual-motor-driven drilling machine and method of controlling currents flowing in motors 失效双马达驱动钻机及控制马达流动电流的方法
公开(公告)号：US5558476A
公开(公告)日：1996-09-24
申请号：US478776
申请日：1995-06-07
IPC分类号： B23Q15/08 , B23B45/14 , B23B47/02 , B25H1/00 , G05B19/416 , B23B35/00 , B23Q15/12 , B23Q15/20
CPC分类号： B25H1/0064 , G05B19/4166 , G05B2219/37285 , G05B2219/37391 , G05B2219/37585 , G05B2219/43145 , G05B2219/45127 , G05B2219/49101 , G05B2219/49304 , G05B2219/49306 , G05B2219/50107 , Y10T408/03 , Y10T408/08 , Y10T408/165 , Y10T408/172
摘要： An automatic drilling machine has an electric drilling unit on which a cylindrical cutter is rotatably mounted. The drilling machine includes a drill motor for rotating the cutter and a feed motor for linearly moving the cutter for the purpose of drilling into materials such as concrete. The current flowing through the drill motor before a drilling load is imposed thereon is detected for a microprocessor to determine the type of the cutter being used. The drill motor is driven at a rotation speed suitable for the cutter being used and the feed motor is driven at a speed such that the rotation speed of the drill motor thus set is maintained unchanged. Particularly, the drill motor is driven at a reduced rotation speed from the start of drilling until a predetermined drilling depth is reached to reduce chatter vibration which may otherwise be generated if the drill motor is driven at a regular constant speed from the beginning of drilling until the end.
摘要翻译： 自动钻孔机具有可旋转地安装圆柱形切割器的电钻孔单元。 钻机包括用于旋转切割器的钻头马达和用于线性移动切割器以用于钻入诸如混凝土的材料的进给马达。 检测在施加钻孔负载之前流过钻机电机的电流，以便微处理器确定正在使用的切割器的类型。 钻机马达以适合于使用的切割器的旋转速度被驱动，并且进给马达以这样设定的钻机的转速保持不变的速度被驱动。 特别地，钻机马达从钻井开始以降低的转速驱动，直到达到预定的钻削深度，以减少颤动振动，否则可能产生如果从开始开始以规则的恒定速度驱动钻机马达， 结束。
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公开(公告)号：US5345245A
公开(公告)日：1994-09-06
申请号：US82006
申请日：1993-06-24
CPC分类号： G01S19/07
摘要： Differential data signal transmission technique, providing a differential data signal transmission technique inclusive of the correcting factor that requires no transmitter/receiver other than the GPS receiver, comprises the use of a differential ranging system where spread spectrum signals (SS signal) are multiplied at the same frequency, transmission rate, and modulation method used by the GPS satellites, but with different codes from those used by the GPS satellites, the SS signals used to transmit correcting factor from an earth station on the ground to a mobile station on the ground carrying a GPS receiver via a geostationary orbit satellite or a low earth orbit satellite.
摘要翻译： 差分数据信号传输技术提供包括不需要GPS接收机以外的发射机/接收机的校正因子的差分数据信号传输技术，包括使用差分测距系统，其中扩频信号（SS信号）在 GPS卫星使用的相同的频率，传输速率和调制方式，但是使用与GPS卫星使用的代码不同的代码，SS信号用于将地面站上的地面站的校正因子传送到地面上的移动台 通过地球同步轨道卫星或低地球轨道卫星的GPS接收机。
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9.发明申请Method for manufacturing nitride film including high-resistivity GaN layer and epitaxial substrate manufactured by the method 有权用于制造包括通过该方法制造的高电阻率GaN层和外延衬底的氮化物膜的方法公开(公告)号：US20050009221A1
公开(公告)日：2005-01-13
申请号：US10873767
申请日：2004-06-22
CPC分类号： C30B29/40 , C30B25/02 , H01L21/0242 , H01L21/02458 , H01L21/02502 , H01L21/0254 , H01L21/0262
摘要： A method for manufacturing a nitride film including a high-resistivity GaN layer includes a step of allowing a Group-III source gas containing an organic metal compound, a Group-V source gas containing ammonia, a carrier gas for the Group-III source gas, and a carrier gas for the Group-V source gas to flow over a predetermined monocrystalline wafer maintained at 1,000° C. or more and also includes a step of epitaxially growing a nitride film, including a GaN layer, on the monocrystalline wafer by a vapor phase reaction of the source gases. At least one of the carrier gases contains nitrogen while the wafer temperature is being increased before the reaction is carried out. At least one of the carrier gases contains hydrogen and nitrogen and has a total hydrogen and nitrogen content of 90 percent by volume or more in at least one part of the epitaxially growing step.
摘要翻译： 制造包括高电阻率GaN层的氮化物膜的方法包括以下步骤：允许含有有机金属化合物的III族源气体，含有氨的V族气体，用于III族源气体的载气 ，并且用于V族源气体的载气在保持在1000℃或更高的预定单晶晶片上流动，并且还包括在单晶晶片上外延生长包括GaN层的氮化物膜的步骤 源气体的气相反应。 在反应进行之前，至少一种载气含有氮，同时晶片温度升高。 至少一种载气含有氢和氮，并且在外延生长步骤的至少一部分中，总氢和氮的总含量为90体积％以上。
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公开(公告)号：US6104746A
公开(公告)日：2000-08-15
申请号：US925319
申请日：1997-09-08
CPC分类号： H04L27/2602 , H04B1/707 , H04B2201/70703
摘要： A combined channel or a composite channel is to be transformed into a plurality of element channels. The composite channel may be either shared by a plurality of communication stations on time division multiplex basis, or used by a single communication station. In a transmit side, a serial data information which is called a composite channel is transformed to parallel form associated with a plurality of element channels, each of which is spread by using a single common PN code. Each spread element channels are frequency converted to radio frequency so that the center carrier frequency is offset from that of adjacent element channel by an integer multiple of information transmission rate of each element channel, and frequency band occupied by spread element channels overlap with one another. Each element channels thus spread and frequency converted are combined on frequency axis, and transmitted to a receive side. Thus, all the element channels are synchronized with one another because of the use of a single common PN code, and receive level of signal of each element channel is uniform, irrespective of a number of communication stations, and therefore, high quality communication with no interference is obtained in a relatively narrow frequency band.
摘要翻译： 组合信道或复合信道将被转换成多个元素信道。 复合信道可以由多个通信站以时分复用为基础共享，或由单个通信站使用。 在发送侧，称为复合信道的串行数据信息被变换成与多个元素信道相关联的并行形式，每个元素信道通过使用单个公共PN码进行扩展。 每个扩展元素信道被频率转换为射频，使得中心载波频率与相邻元素信道的中心载波频率偏移每个元素信道的信息传输速率的整数倍，并且扩频元件信道占据的频带彼此重叠。 如此扩频和频率转换的每个元素信道在频率轴上组合，并传输到接收侧。 因此，由于使用单个公共PN码，所有元件信道彼此同步，并且每个元件信道的接收信号水平是均匀的，而与通信站数量无关，因此，高质量的通信没有 在相对窄的频带获得干扰。
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