Transmitter
    62.
    发明授权
    Transmitter 失效
    发射机

    公开(公告)号:US07116947B2

    公开(公告)日:2006-10-03

    申请号:US11085459

    申请日:2005-03-22

    IPC分类号: H04B1/02 H04B1/04 H01Q11/12

    摘要: An amplitude component and a phase component of a modulated signal are inputted into a power supply terminal and an input terminal of an RF power amplifier, respectively, and a modulated wave that is produced by demodulating an original modulated signal is obtained from the RF power amplifier. A supply voltage is supplied to an emitter follower and an operational amplifier via a switch group from a DC-DC converter group whose output voltages are sequentially different. As the supply voltage, any pair of outputs of DC-DC converters by the switch group is selected according to levels of the amplitude component, and provides them to the emitter follower and the operational amplifier. The emitter follower performs a DC conversion of the provided supply voltage to provide it to the RF power amplifier.

    摘要翻译: 调制信号的幅度分量和相位分量分别输入到RF功率放大器的电源端子和输入端子,并且从RF功率放大器获得通过解调原始调制信号产生的调制波 。 电源电压经由输出电压依次不同的DC-DC转换器组经由开关组提供给发射极跟随器和运算放大器。 作为电源电压,根据振幅分量的电平选择开关组的DC-DC转换器的任何一对输出,并将其提供给射极跟随器和运算放大器。 射极跟随器对所提供的电源电压进行DC转换,以将其提供给RF功率放大器。

    Transmission circuit
    63.
    发明授权
    Transmission circuit 有权
    传输电路

    公开(公告)号:US07092683B2

    公开(公告)日:2006-08-15

    申请号:US10811827

    申请日:2004-03-30

    IPC分类号: H04B1/02 H04B1/04

    CPC分类号: H04B1/0475

    摘要: A transmission circuit includes: a modulated signal generator for outputting a modulated signal; an envelope detector for outputting an amplitude modulated voltage; an amplitude roll-off LPF for attenuating the amplitude modulated voltage by using a damping property represented by an exponential function in which an argument is exponentially proportional to a frequency; a power-supply-voltage generator for generating a power supply voltage in accordance with an amplitude value of the amplitude modulated voltage; a phase detector for outputting a phase modulated signal; a phase roll-off LPF for attenuating the phase modulated signal by using a damping property represented by an exponential function in which an argument is exponentially proportional to an offset frequency with respect to a center frequency; and an RF power amplifier.

    摘要翻译: 发送电路包括:调制信号发生器,用于输出调制信号; 用于输出幅度调制电压的包络检测器; 用于通过使用其中参数与频率成指数成比例的指数函数表示的阻尼特性来衰减幅度调制电压的幅度滚降LPF; 电源电压发生器,用于根据幅度调制电压的振幅值产生电源电压; 相位检测器,用于输出相位调制信号; 相位滚降LPF,用于通过使用由参数与偏移频率相对于中心频率指数成比例的指数函数表示的衰减特性来衰减相位调制信号; 和RF功率放大器。

    Transmitter
    65.
    发明申请
    Transmitter 失效
    发射机

    公开(公告)号:US20060068697A1

    公开(公告)日:2006-03-30

    申请号:US10522741

    申请日:2003-10-23

    IPC分类号: H04K3/00

    摘要: The present invention provides a transmitter conforming to the EER method in a wide frequency band at high efficiency. For this purpose, the amplitude component of a modulated signal is input to the power supply terminal of a high-frequency power amplifier 130, the I and Q quadrature signals thereof are input to the high-frequency input terminal of the high-frequency power amplifier 130, and the original modulated signal is obtained from the output of the high-frequency power amplifier 130. A collector voltage is supplied from DC-DC converter group 615 having output voltages being different sequentially to an emitter follower 729 via a switch group 621. One of the outputs of the DC-DC converters 616 to 620 is selected depending on the level of the amplitude component as the collector voltage and supplied to the emitter follower, whereby the difference between the emitter voltage of he emitter follower 729 and the collector voltage of the emitter follower 729 is made smaller and the efficiency of the emitter follower 729 is raised; furthermore, the power supply voltage of the high-frequency power amplifier 130 is voltage-converted by the emitter follower 729, whereby operation in a wide frequency band is made possible.

    摘要翻译: 本发明提供了一种符合EER方法的发射机,在宽频带内具有高效率。 为此,调制信号的幅度分量被输入到高频功率放大器130的电源端子,其I和Q正交信号被输入到高频功率放大器的高频输入端 130,并且从高频功率放大器130的输出获得原始调制信号。 从具有输出电压的DC-DC转换器组615经由开关组621向发射极跟随器729提供集电极电压。 DC-DC转换器616至620的输出之一根据作为集电极电压的振幅分量的电平来选择,并提供给射极跟随器,由此发射极跟随器729的发射极电压与集电极电压 使发射极跟随器729的功率越小,发射极跟随器729的效率越高; 此外,高频功率放大器130的电源电压由射极跟随器729进行电压转换,从而可以在宽频带中进行操作。

    Process for searching for files when drive configurations of processing apparatuses are changed
    67.
    发明授权
    Process for searching for files when drive configurations of processing apparatuses are changed 有权
    当改变处理设备的驱动器配置时搜索文件的处理

    公开(公告)号:US07007012B2

    公开(公告)日:2006-02-28

    申请号:US09974383

    申请日:2001-10-10

    IPC分类号: G06F17/30

    摘要: A music piece managing unit judges whether or not a music piece file name corresponding to a music piece ID received from a playing processing unit exists in a corresponding music piece file storing unit, and in the event that judgment is made that the file name does not exist, a drive letter in the obtained file name is changed to the drive letter of a currently-connected drive, thereby generating a new file name. The music piece managing unit then judges whether or not the newly-generated file name exists in the corresponding music piece file storing unit, and in the event that judgment is made that the file name exists, the file name of the music piece is updated to the newly-generated file name. Thus, music piece files can be readily searched for, even in the event that the configuration of the drives has been changed.

    摘要翻译: 乐曲管理单元判断与播放处理单元接收到的乐曲ID相对应的乐曲文件名是否存在于相应乐曲文件存储单元中,并且在判断文件名不是 存在,获取的文件名中的驱动器号被更改为当前连接的驱动器的驱动器盘符,从而生成新的文件名。 然后,乐曲管理单元判断新生成的文件名是否存在于相应的乐曲文件存储单元中,并且在判断出文件名存在的情况下,音乐片段的文件名被更新为 新生成的文件名。 因此,即使在驱动器的配置已经改变的情况下,也可以容易地搜索音乐片文件。

    Transmitter and transceiver
    70.
    发明申请
    Transmitter and transceiver 失效
    发射器和收发器

    公开(公告)号:US20050202789A1

    公开(公告)日:2005-09-15

    申请号:US11073860

    申请日:2005-03-08

    摘要: g(x) Storing means stores a correction function y=g(x) corresponding to the distortion of a high frequency power amplifier as a function of a voltage x provided to a power supply terminal of the high frequency power amplifier. Operating means receives the correction function g(x) and a complex vector modulation signal z provided from modulation signal generating means, then causes an inverse function g−1 to operate on the absolute value and the phase of the complex vector modulation signal z having undergone polar coordinate conversion, and thereby outputs z′=g−1(z). This data is provided to the high frequency power amplifier. Further, triangular wave storing means is provided for storing a triangular wave having the same amplitude as that of the modulation signal. Either the triangular wave signal outputted from the triangular wave storing means or the modulation signal z′ is selectively provided to the high frequency power amplifier.

    摘要翻译: g(x)存储装置存储与高频功率放大器的失真相对应的校正函数y = g(x)作为提供给高频功率放大器的电源端子的电压x的函数。 操作装置接收从调制信号发生装置提供的校正函数g(x)和复矢量调制信号z,然后使反函数g -1至...对绝对值和 经过极坐标转换的复矢量调制信号z,从而输出z'= g -1(z)。 该数据被提供给高频功率放大器。 此外,三角波存储装置用于存储具有与调制信号相同幅度的三角波。 从三角波存储装置输出的三角波信号或调制信号z'被选择性地提供给高频功率放大器。