Control system for an inverter apparatus
    34.
    发明授权
    Control system for an inverter apparatus 失效
    逆变器装置的控制系统

    公开(公告)号:US4866592A

    公开(公告)日:1989-09-12

    申请号:US175495

    申请日:1988-03-30

    IPC分类号: H02M7/5387

    摘要: A control system for a transistor inverter comprising a circuit for detecting the load current or the output voltage from the inverter to produce a detection output; a circuit for outputting a control instruction for adjusting the load current; a leading angle forming circuit for combining the detection output with the control instruction to form a control signal corresponding to a leading angle at which the inverter output voltage is controlled with a leading phase relative to the load current; and a circuit receiving the control signal from the leading angle forming circuit and for forming a switching control signal, which is supplied to the switching devices in the inverter. The load current is not controlled directly by controlling the frequency of the inverter, but by changing the phase difference .gamma. between the load current and the inverter output voltage.

    摘要翻译: 一种用于晶体管反相器的控制系统,包括用于检测来自逆变器的负载电流或输出电压以产生检测输出的电路; 用于输出用于调整负载电流的控制指令的电路; 一个引导角形成电路,用于将检测输出与控制指令组合,以形成对应于相对于负载电流以超前相位控制逆变器输出电压的前导角的控制信号; 以及电路,从前导角形成电路接收控制信号,并形成提供给逆变器中的开关装置的开关控制信号。 负载电流不是通过控制变频器的频率直接控制,而是通过改变负载电流和逆变器输出电压之间的相位差γ来控制。

    Transmitting apparatus and method
    36.
    发明授权
    Transmitting apparatus and method 有权
    传输装置和方法

    公开(公告)号:US08102934B2

    公开(公告)日:2012-01-24

    申请号:US12109601

    申请日:2008-04-25

    申请人: Masaaki Fujii

    发明人: Masaaki Fujii

    IPC分类号: H04B7/02

    CPC分类号: H04B7/0417

    摘要: A transmitting apparatus includes a subset matrix setting unit to set a subset matrix corresponding to a channel matrix with respect to each of a plurality of antennas of at least one of a plurality of user terminals, using channel matrices fed back from the plurality of user terminals; a beamforming matrix calculator to perform a predetermined operation using the set subset matrix so as to calculate a beamforming matrix composed of weight vectors respectively corresponding to the plurality of antennas of each of the plurality of user terminals; a beamforming processor to perform a beamforming process on data to be transmitted according to the calculated beamforming matrix so as to generate a transmission signal; and antennas to transmit the transmission signal to the plurality of user terminals. The transmitting apparatus obtains a diversity effect while removing interference between user terminals with a small quantity of computations.

    摘要翻译: 发送装置包括子集矩阵设置单元,使用从多个用户终端反馈的信道矩阵来设置相对于多个用户终端中的至少一个的多个天线中的每一个的信道矩阵的子集矩阵 ; 波束成形矩阵计算器,用于使用所设置的子集矩阵来执行预定的操作,以便计算由分别对应于所述多个用户终端中的每一个的所述多个天线的权重向量组成的波束成形矩阵; 波束形成处理器,用于根据所计算的波束形成矩阵对要发送的数据执行波束成形处理,以便产生发送信号; 以及将发送信号发送到多个用户终端的天线。 发送装置在少量计算的同时消除用户终端之间的干扰而获得分集效果。

    Wireless transceiver and wireless transmitting/receiving method and program thereof
    37.
    发明申请
    Wireless transceiver and wireless transmitting/receiving method and program thereof 失效
    无线收发器及其无线发送/接收方法及程序

    公开(公告)号:US20060251149A1

    公开(公告)日:2006-11-09

    申请号:US10544349

    申请日:2004-02-18

    申请人: Masaaki Fujii

    发明人: Masaaki Fujii

    IPC分类号: H04B1/00

    摘要: The present invention is provided with a wireless transceiver and wireless transmitting/receiving method and program thereof capable of improving the robustness against Doppler frequency by containing transmit diversity signals in one spreading region. In the present invention, the transmitter encodes the transmit signals using a space-time matrix and transmits the encoded space-time signals after being spread with different spreading codes, and the receiver de-spreads the received spread signals, in unit of time slot, with the spreading codes corresponding to the respective time slots and then decodes the de-spread signals using the space-time matrix.

    摘要翻译: 本发明提供了一种无线收发机及其无线发送/接收方法和程序,其能够通过在一个扩展区域中包含发送分集信号来提高针对多普勒频率的鲁棒性。 在本发明中,发射机使用空时矩阵对发射信号进行编码,并且在用不同的扩展码扩频之后发送编码的空时信号,并且接收机以时隙为单位解扩接收的扩展信号, 其中扩展码对应于各个时隙,然后使用时空矩阵解码解扩信号。

    Battery pack employing charge control device
    38.
    发明授权
    Battery pack employing charge control device 有权
    电池组采用充电控制装置

    公开(公告)号:US06979978B2

    公开(公告)日:2005-12-27

    申请号:US11071201

    申请日:2005-03-04

    申请人: Masaaki Fujii

    发明人: Masaaki Fujii

    摘要: A charge control device has a full charge detection circuit for checking whether a secondary cell is in a fully charged state or not based on the charge voltage and/or the charge current of the secondary cell, a control circuit for controlling the feeding of electric power to the secondary cell according to the output of the full charge detection circuit, a storage circuit for storing control information, and a setting circuit for setting the level of the charge voltage and/or the charge current at which the full charge detection circuit recognizes the fully charged state according to the control information read from the storage circuit. The control information is fed into the storage circuit from outside. With this configuration, it is possible to accurately control the charging of a secondary cell by canceling the influence of stress occurring when an IC is packaged or mounted on a circuit board and other factors.

    摘要翻译: 充电控制装置具有完全充电检测电路,用于根据二次电池的充电电压和/或充电电流来检查二次电池是否处于完全充电状态,用于控制电力供给的控制电路 根据完全充电检测电路的输出,存储控制信息的存储电路和用于设定充满电压和/或充电电流的电平的设定电路,该充电电压和/或满充电检测电路识别的充电电流 根据从存储电路读取的控制信息的充满电状态。 控制信息从外部馈送到存储电路。 利用这种结构,可以通过消除IC封装或安装在电路板上所产生的应力的影响以及其它因素来精确地控制二次电池的充电。

    Transceiver apparatus and transceiving method
    39.
    发明申请
    Transceiver apparatus and transceiving method 失效
    收发装置和收发方式

    公开(公告)号:US20050163238A1

    公开(公告)日:2005-07-28

    申请号:US11049381

    申请日:2005-02-02

    申请人: Masaaki Fujii

    发明人: Masaaki Fujii

    摘要: In a transmitting method for transmitting a transmit signal sequence by a number of subcarriers, a plurality of subcarriers F1, F2, . . . FNSCH exclusively for a synchronization channel are provided, a signal sequence of synchronization channel SCH is transmitted by the plurality of exclusive subcarriers, and a common pilot CPICH or dedicated signal DPCH is transmitted on the other subcarriers. In this case, the signal sequence of the synchronization channel is subjected to differential encoding processing and the differentially encoded signal sequence is transmitted by the exclusive subcarriers.

    摘要翻译: 在用于通过多个子载波发送发送信号序列的发送方法中,多个子载波F 1,F 2 2,..., 。 。 提供专用于同步信道的信道序列,由多个专用子载波发送同步信道SCH的信号序列,并且在其他子载波上发送公共导频CPICH或专用信号DPCH。 在这种情况下,对同步信道的信号序列进行差分编码处理,并且通过专用子载波来发送差分编码的信号序列。

    Charge control device and battery pack employing it

    公开(公告)号:US20050140339A1

    公开(公告)日:2005-06-30

    申请号:US11071201

    申请日:2005-03-04

    申请人: Masaaki Fujii

    发明人: Masaaki Fujii

    摘要: A charge control device has a full charge detection circuit for checking whether a secondary cell is in a fully charged state or not based on the charge voltage and/or the charge current of the secondary cell, a control circuit for controlling the feeding of electric power to the secondary cell according to the output of the full charge detection circuit, a storage circuit for storing control information, and a setting circuit for setting the level of the charge voltage and/or the charge current at which the full charge detection circuit recognizes the fully charged state according to the control information read from the storage circuit. The control information is fed into the storage circuit from outside. With this configuration, it is possible to accurately control the charging of a secondary cell by canceling the influence of stress occurring when an IC is packaged or mounted on a circuit board and other factors.