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1. 发明授权

US6141392A Receive antenna selection method and diversity receiver 失效
标题翻译：接收天线选择方法和分集接收机
公开(公告)号：US6141392A
公开(公告)日：2000-10-31
申请号：US888234
申请日：1997-07-03
申请人： Atsushi Hoshikuki , Satoru Ishii
发明人： Atsushi Hoshikuki , Satoru Ishii
IPC分类号： H04B1/707 , H04B1/711 , H04B7/08 , H04L1/02
CPC分类号： H04B7/0811 , H04B7/0834
摘要： A receive antenna selection method and a diversity receive capable of preventing a deterioration in transmission efficiency in a multipath environment. A receive antenna for receiving a packet is selected during a period of time for which a preamble section of the packet is received, to thereby keep change-over between packets from being carried out during receiving of the packet. This eliminates a situation that a packet must be nullified due to generation of a bit error by change-over between receive antennas during receiving of the packet, to thereby keep transmission efficiency from being deteriorated even in a multipath environment.
摘要翻译：一种接收天线选择方法和能够防止多路径环境中的传输效率恶化的分集接收。在接收到分组的前导码部分的时间段期间选择用于接收分组的接收天线，从而在分组的接收期间保持在分组之间的切换。这消除了由于在接收分组期间在接收天线之间转换而产生位错误而使分组必须无效的情况，从而即使在多径环境中也保持传输效率不劣化的情况。

2. 发明授权

US5838717A Spectrum spread communication system 失效
标题翻译：频谱传播通信系统
公开(公告)号：US5838717A
公开(公告)日：1998-11-17
申请号：US500748
申请日：1995-07-11
申请人： Satoru Ishii , Atsushi Hoshikuki
发明人： Satoru Ishii , Atsushi Hoshikuki
IPC分类号： H04B1/69 , H04B1/692 , H04B1/7097 , H04B1/719 , H04B1/707
CPC分类号： H04B1/69
摘要： A spectrum spread communication system capable of preventing an increase in error rate irrespective of hit while keeping a communication speed from being reduced. A plurality of input data DS-modulated by a DS spread multiplier are fed to an array converter, wherein a first chip of each of the data is collected to form an FH first frame. Likewise, only second to seventh chips are collected to form FH second to seventh frames, respectively. The FH frames each are then subject to FH modulation in an FH spread multiplier and then transmitted. In a receive section, the data are returned to the original data array after FH demodulation, resulting in a burst error being a random error.
摘要翻译：一种频谱扩展通信系统，其能够防止在保持通信速度降低的同时不受命中的错误率的增加。由DS扩展乘法器DS调制的多个输入数据被馈送到阵列转换器，其中收集每个数据的第一芯片以形成FH第一帧。同样地，仅收集第二至第七芯片以分别形成FH第二至第七帧。然后每个FH帧在FH扩展乘数中进行FH调制，然后发送。在接收部分，在FH解调之后，数据返回到原始数据阵列，导致突发错误是随机误差。

3. 发明授权

US06987794B1 Receiver and received channel estimation method for the same 失效
标题翻译：接收机和接收信道估计方法相同
公开(公告)号：US06987794B1
公开(公告)日：2006-01-17
申请号：US09589170
申请日：2000-06-08
申请人： Ryuji Kohno , Satoru Ishii , Atsushi Hoshikuki
发明人： Ryuji Kohno , Satoru Ishii , Atsushi Hoshikuki
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/7156 , H04L2027/0065 , H04L2027/0081
摘要： A receiver is provided that can shorten the time during which initial synchronization is established. When the frequency of an output signal from the PLL 12 is set to the receiving channel corresponding to the transmission channel for a transmission signal, the time-constant switching circuit 17 changes the time constant of the loop filter 14 to a low rate mode. Meanwhile, the output signal frequency from the PLL is swept between the highest frequency and the lowest frequency signal of a frequency channel. Thus, a receiving channel corresponding to the transmission channel is estimated by signals received during the sweeping period so that the initial synchronization is established based on the estimation result. Receiving-channel estimation, to which adverse effects due to multi-path fading are reduced, can be reliably performed by selecting each of plural receiving antennas in time-divisional mode and synthesizing envelopes of received signals from respective antennas.
摘要翻译：提供了可以缩短建立初始同步的时间的接收机。当来自PLL12的输出信号的频率被设置为与传输信号的传输信道相对应的接收信道时，时间常数切换电路17将环路滤波器14的时间常数改变为低速率模式。同时，来自PLL的输出信号频率在频率信道的最高频率和最低频率信号之间扫描。因此，通过在扫描周期期间接收到的信号来估计对应于传输信道的接收信道，从而基于估计结果建立初始同步。通过在时分模式中选择多个接收天线中的每一个并且合成来自各个天线的接收信号的包络，可以可靠地执行通过减少由于多径衰落引起的不利影响的接收信道估计。

4. 发明授权

US08511675B2 Sheet feeding device and image forming apparatus including the same 有权
标题翻译：送纸装置和包括该纸张供给装置的图像形成装置
公开(公告)号：US08511675B2
公开(公告)日：2013-08-20
申请号：US13310470
申请日：2011-12-02
申请人： Masayuki Yamagishi , Satoru Ishii , Kenichi Ishikura
发明人： Masayuki Yamagishi , Satoru Ishii , Kenichi Ishikura
IPC分类号： B65H1/08
CPC分类号： B65H3/0607 , B65H3/0669 , B65H3/5261 , B65H3/54 , B65H2402/441 , B65H2403/511 , B65H2403/5331 , B65H2404/1113 , G03G15/6511
摘要： A sheet feeding device includes a sheet storing portion storing sheets stacked on a stacking surface thereof; a feeding roller feeding each of the sheets by rotating while being in contact with a topmost one of the sheets; a support member having a support surface that supports downstream-side part, in a sheet feeding direction, of the sheets and, at the time of sheet feeding, being movable perpendicularly to the stacking surface while lifting the downstream-side part of the sheets with the topmost sheet kept in contact with the feeding roller; and a stopper member configured to come into contact with leading ends of some sheets to be fed by the feeding roller and to stop sheets other than the topmost sheet. The support surface of the support member slopes upward, with respect to the stacking surface, toward a downstream side in the sheet feeding direction.
摘要翻译：片材进给装置包括：纸张收纳部，其存储层叠在其堆叠表面上的纸张; 馈送辊，通过在与最上面的一个片材接触的同时旋转而馈送每个片材; 支撑构件，其具有支撑表面，其支撑片材的片材进给方向的下游侧部分，并且在片材馈送时可垂直于堆叠表面移动，同时用片材的下游侧部分提起片材的下游侧部分; 最上面的纸张保持与进给辊接触; 以及止动构件，其被配置为与由所述进给辊供给的一些片材的前端接触并且停止除了最上面的片材之外的片材。支撑构件的支撑表面相对于堆叠表面向上朝向片材进给方向的下游侧倾斜。

5. 发明授权

US07918201B2 Variable valve mechanism for engine 有权
标题翻译：发动机变阀机构
公开(公告)号：US07918201B2
公开(公告)日：2011-04-05
申请号：US12344006
申请日：2008-12-24
申请人： Akira Yoshihara , Yuichi Takahashi , Kenta Kotsuji , Yasunori Kutsuna , Akira Ohta , Satoru Ishii
发明人： Akira Yoshihara , Yuichi Takahashi , Kenta Kotsuji , Yasunori Kutsuna , Akira Ohta , Satoru Ishii
IPC分类号： F01L1/18
CPC分类号： F01L13/0036 , F01L1/053 , F01L1/185 , F01L1/267 , F01L2001/186 , F01L2105/00 , Y10T74/20882 , Y10T74/2107
摘要： A variable valve mechanism for an engine includes: a rocker shaft; a first rocker arm rotatably supported by the rocker shaft, for transmitting displacement of a first cam to a valve; a second rocker arm rotatably supported by the rocker shaft, for transmitting a displacement of a second cam to the valve; and a switching mechanism for switching a transmitting state and a non-transmitting state. The first rocker arm has a pair of first arm portions and a recess portion in which an upper end of the valve is inserted at an end portion of each of the first arm portions. The second rocker arm has a second arm portion disposed between the first arm portions. The first rocker arm is restricted from movement in an axis direction of the rocker shaft when an inner sidewall of the recess portion is in contact with the upper end of the valve. The second rocker arm is restricted from movement in the axis direction when the second arm portion is in contact with the first rocker arm.
摘要翻译：用于发动机的可变气门机构包括：摇臂轴; 由摇臂可旋转地支撑的第一摇臂，用于将第一凸轮的位移传递到阀; 可旋转地由所述摇杆轴支撑的第二摇臂，用于将第二凸轮的位移传递到所述阀; 以及用于切换发送状态和非发送状态的切换机构。第一摇臂具有一对第一臂部和凹部，在该凹部中，阀的上端插入在每个第一臂部的端部。第二摇臂具有设置在第一臂部之间的第二臂部。当凹部的内侧壁与阀的上端接触时，第一摇臂被限制在摇臂轴的轴线方向上的移动。当第二臂部与第一摇臂接触时，第二摇臂被限制在轴向移动。

6. 发明授权

US07616066B2 Oscillation device and controlling method therefor 失效
标题翻译：振荡装置及其控制方法
公开(公告)号：US07616066B2
公开(公告)日：2009-11-10
申请号：US11485464
申请日：2006-07-13
申请人： Satoru Ishii , Yasutaka Koike
发明人： Satoru Ishii , Yasutaka Koike
IPC分类号： H03L7/08
CPC分类号： H03L7/14
摘要： An oscillation device includes a reference oscillation unit for generating an oscillating signal of a specific frequency; a voltage-controlled oscillation unit for generating a output oscillation signal whose frequency is dependent on a control voltage; a phase comparing unit for detecting a phase difference based on the oscillating signal and the output oscillation signal; a digital value storage unit for storing therein a phase difference signal corresponding to the phase difference as a digital value; a sample holding unit for intermittently renewing and maintaining a hold signal in accordance with the digital value; and a control unit. The control unit controls the reference oscillation unit, the phase comparing unit and the digital value storage unit to be started or stopped, and also switches the control voltage to the phase difference signal or to the hold signal.
摘要翻译：振荡装置包括用于产生特定频率的振荡信号的参考振荡单元; 用于产生其频率取决于控制电压的输出振荡信号的压控振荡单元; 相位比较单元，用于基于振荡信号和输出振荡信号检测相位差; 数字值存储单元，用于在其中存储与相位差相对应的相位差信号作为数字值; 采样保持单元，用于根据数字值间歇地更新和维持保持信号; 和控制单元。控制单元控制参考振荡单元，相位比较单元和要开始或停止的数字值存储单元，并且还将控制电压切换到相位差信号或保持信号。

7. 发明申请

US20090245332A1 Correlator And Ultrawideband Radio Receiving Apparatus Incorporating The Same 审中-公开
标题翻译：相关器和超宽带无线电接收装置
公开(公告)号：US20090245332A1
公开(公告)日：2009-10-01
申请号：US12400592
申请日：2009-03-09
申请人： Satoru Ishii , Yasutaka Koike , Ryuji Kohno
发明人： Satoru Ishii , Yasutaka Koike , Ryuji Kohno
IPC分类号： H04B1/707 , H03D1/00
CPC分类号： H04B1/69 , H04B1/7093 , H04B1/71637
摘要： A correlator (i.e., a despreading filter) and an ultrawideband radio receiving apparatus that incorporates the correlator are provided. In one embodiment, a correlator multiplies a plurality of output signals output by a plurality of delay elements that are series-connected by a predetermined coefficient of either +1 or −1 and then sums the plurality of output signals, the delay element including a delay line and an amplifier; the delay line being configured by serially connecting a plurality of delay-line elements, each of the delay-line elements being a low pass filter that has an inductor and a capacitor; the amplifier being connected to an output of a last-stage delay-line element of the series-connected delay-line elements so as to perform impedance matching with respect to the delay line; an output of the amplifier being connected to a subsequent circuit so as to perform impedance matching with respect to the subsequent circuit, such that a loss of the delay line is compensated for and an output voltage of the delay element is made equal to an input voltage of the delay element.
摘要翻译：提供了相关器（即，解扩滤波器）和包含相关器的超宽带无线电接收装置。在一个实施例中，相关器将由多个延迟元件输出的多个输出信号相乘，所述多个延迟元件串联连接预定系数为+1或-1，然后对多个输出信号求和，该延迟元件包括延迟线和放大器; 延迟线通过串联连接多个延迟线元件来配置，每个延迟线元件是具有电感器和电容器的低通滤波器; 所述放大器连接到所述串联延迟线元件的最后级延迟线元件的输出端，以对所述延迟线执行阻抗匹配; 放大器的输出连接到后续电路，以对后续电路执行阻抗匹配，从而补偿延迟线的损耗，使延迟元件的输出电压等于输入电压的延迟元件。

8. 发明申请

US20070013449A1 Oscillation device and controlling method therefor 失效
标题翻译：振荡装置及其控制方法
公开(公告)号：US20070013449A1
公开(公告)日：2007-01-18
申请号：US11485464
申请日：2006-07-13
申请人： Satoru Ishii , Yasutaka Koike
发明人： Satoru Ishii , Yasutaka Koike
IPC分类号： H03L7/00
CPC分类号： H03L7/14
摘要： An oscillation device includes a reference oscillation unit for generating an oscillating signal of a specific frequency; a voltage-controlled oscillation unit for generating a output oscillation signal whose frequency is dependent on a control voltage; a phase comparing unit for detecting a phase difference based on the oscillating signal and the output oscillation signal; a digital value storage unit for storing therein a phase difference signal corresponding to the phase difference as a digital value; a sample holding unit for intermittently renewing and maintaining a hold signal in accordance with the digital value; and a control unit. The control unit controls the reference oscillation unit, the phase comparing unit and the digital value storage unit to be started or stopped, and also switches the control voltage to the phase difference signal or to the hold signal.
摘要翻译：振荡装置包括用于产生特定频率的振荡信号的参考振荡单元; 用于产生其频率取决于控制电压的输出振荡信号的压控振荡单元; 相位比较单元，用于基于振荡信号和输出振荡信号检测相位差; 数字值存储单元，用于在其中存储与相位差相对应的相位差信号作为数字值; 采样保持单元，用于根据数字值间歇地更新和维持保持信号; 和控制单元。控制单元控制参考振荡单元，相位比较单元和要开始或停止的数字值存储单元，并且还将控制电压切换到相位差信号或保持信号。

9. 发明授权

US06778589B1 Symbol synchronous device and frequency hopping receiver 失效
标题翻译：符号同步装置和跳频接收机
公开(公告)号：US06778589B1
公开(公告)日：2004-08-17
申请号：US09414494
申请日：1999-10-08
申请人： Satoru Ishii
发明人： Satoru Ishii
IPC分类号： H04B169
CPC分类号： H04B1/7156 , H04B2001/71563
摘要： A symbol synchronous device is provided that can maintain symbol synchronization in short time in response to synchronous signals. The symbol synchronous device receives a synchronous signal at a signal point with a different phase degree, the synchronous signal in which the phase rotational direction is reversed to said carrier, and then produces a decision timing in synchronous with a symbol of said digital-modulated signal. The differential output unit 9 and the decision unit 10 detect the reverse timing based on the phase angle &dgr; of a digital-modulated signal with respect to the reference frequency signal. The phase angle is produced by the phase angle calculation unit 8. The XOR integration digital PLL 11 produces clock signals in synchronous with the reverse timing to provide the decision timing.
摘要翻译：提供符号同步装置，可以响应于同步信号在短时间内保持符号同步。符号同步装置在具有不同相位度的信号点接收同步信号，其中相位旋转方向与所述载波相反的同步信号，然后产生与所述数字调制信号的符号同步的判定定时。差分输出单元9和判定单元10基于数字调制信号相对于参考频率信号的相位角增量检测反向定时。相位角由相位角计算单元8产生.XOR积分数字PLL11产生与反向定时同步的时钟信号以提供判定定时。

10. 发明授权

US06775532B2 Communication apparatus with an RF transmission section operated by second and third clock signals 失效
标题翻译：双向无线通信设备
公开(公告)号：US06775532B2
公开(公告)日：2004-08-10
申请号：US09793502
申请日：2001-02-27
申请人： Satoru Ishii
发明人： Satoru Ishii
IPC分类号： H04Q720
CPC分类号： H04W52/029 , Y02D70/00
摘要： A communication apparatus capable of realizing a reduction in power consumption thereof. At least a wireless unit control command analysis/processing section which is operable at a low-speed clock is constituted by a logic circuit. The wireless unit control command analysis/processing section is fed with a low-speed clock as an operation clock therefor. This leads to a reduction in power consumption of the wireless unit control command analysis/processing section.
摘要翻译：一种能够实现其功耗降低的通信装置。至少在低速时钟可操作的无线单元控制命令分析/处理部分由逻辑电路构成。无线单元控制指令分析/处理部供给低速时钟作为其操作时钟。这导致无线单元控制命令分析/处理部分的功耗的降低。

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