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    • 3. 发明申请
    • TOUCH PANEL CONTROLLER AND ELECTRONIC APPARATUS EMPLOYING SAME
    • 触控面板控制器和使用其的电子设备
    • US20140104236A1
    • 2014-04-17
    • US14124583
    • 2012-01-23
    • Mutsumi HamaguchiMasayuki MiyamotoKunihiko Iizuka
    • Mutsumi HamaguchiMasayuki MiyamotoKunihiko Iizuka
    • G06F3/044
    • G06F3/044G06F3/0416
    • A touch panel controller (1), which can accurately detect changes in capacitance values of respective first and second electrostatic capacitors which are touched, includes: a driving section (4) for driving drive lines (DL1 through DL4) on the basis of a code sequence so as to drive (i) electrostatic capacitors (C31 through C34) provided between the respective drive lines (DL1 through DL4) and a sense line (SL3) and (ii) electrostatic capacitors (C41 through C44) provided between the respective drive lines (DL1 through DL4) and a sense line (SL4) so that (i) a first linear sum of first capacitance values of the respective electrostatic capacitors (C31 through C34) is outputted from the sense line (SL3) and (ii) a second linear sum of second capacitance values of the respective electrostatic capacitors (C41 through C44) is outputted from the sense line (SL4); a differential amplifier (5) for amplifying a difference between the first linear sum and the second linear sum; and a saturation prevention control section (8) for correcting a line dependency between the first capacitance values and the second capacitance values.
    • 可以精确地检测被触摸的各个第一和第二静电电容器的电容值的变化的触控板控制器(1)包括:用于根据代码驱动驱动线(DL1至DL4)的驱动部分(4) 驱动(i)设置在各驱动线(DL1〜DL4)和感测线(SL3)之间的静电电容器(C31〜C34)和(ii)设置在各驱动线之间的静电电容器(C41〜C44) (DL1至DL4)和感测线(SL4),使得(i)从感测线(SL3)输出各静电电容器(C31至C34)的第一电容值的第一线性和,并且(ii)第二 从感测线(SL4)输出各静电电容器(C41〜C44)的第二电容值的线性和; 用于放大第一线性和和第二线性和之间的差的差分放大器(5) 以及用于校正第一电容值和第二电容值之间的线相依性的饱和度防止控制部分(8)。
    • 6. 发明申请
    • FRONT-END CIRCUIT, TUNER, AND TELEVISION BROADCASTING RECEIVER
    • 前端电路,调谐器和电视广播接收器
    • US20110051013A1
    • 2011-03-03
    • US12822819
    • 2010-06-24
    • Mutsumi HamaguchiTsuyoshi Itaya
    • Mutsumi HamaguchiTsuyoshi Itaya
    • H04N5/50H02M5/00
    • H04N5/50H03J1/0083H04N21/42607H04N21/4263H04N21/4382
    • A front-end circuit according to the present invention includes a VCO which oscillates a local signal, a mixer which converts an RF signal Frf into a baseband signal, a DC offset cancel circuit which detects a DC offset contained in the baseband signal and then eliminates the DC offset, and a local frequency control circuit which controls a frequency of the local signal. In a case where the RF signal is an analog television signal, the local frequency control circuit controls the frequency of the local signal so that a frequency of the baseband signal differs from each frequency spectrum of a luminance signal contained in a video signal which is generated by demodulating the baseband signal. This makes it possible to provide the front-end circuit which can prevent video distortion caused when a frequency spectrum is eliminated from the luminance signal.
    • 根据本发明的前端电路包括振荡本地信号的VCO,将RF信号Frf转换成基带信号的混频器,检测基带信号中包含的DC偏移然后消除的DC偏移消除电路 DC偏移,以及控制本地信号频率的本地频率控制电路。 在RF信号是模拟电视信号的情况下,本地频率控制电路控制本地信号的频率,使得基带信号的频率与包含在生成的视频信号中的亮度信号的每个频谱不同 通过解调基带信号。 这使得可以提供可以防止当从亮度信号中消除频谱时引起的视频失真的前端电路。
    • 8. 发明授权
    • Gray code counter
    • 格雷码计数器
    • US06950138B2
    • 2005-09-27
    • US10058386
    • 2002-01-30
    • Mutsumi Hamaguchi
    • Mutsumi Hamaguchi
    • H03K21/40H03K23/00H03K23/66H03M7/16H04N3/14
    • H03K23/005H04N5/335
    • Conventionally, it is difficult to design the logic of a Gray code counter that can be used in interlaced counting. Even though interlaced counting is possible with a Gray code counter, the number of simultaneously changing bits increases greatly depending on the number of counts skipped at a time. To overcome these problems, a Gray code counter according to the present invention has a consecutively counting Gray code counter that counts in increments or decrements of one, and an output value converter circuit that converts the Gray code data output from the consecutively counting Gray code counter into a Gray code corresponding to decimal counts as obtained by counting with (2 raised to a particular power minus 1) counts skipped at a time.
    • 通常,难以设计可用于隔行扫描计数的格雷码计数器的逻辑。 即使使用格雷码计数器进行隔行计数也是可能的,同时更改位数可以根据每次跳过的计数数量大大增加。 为了克服这些问题,根据本发明的格雷码计数器具有连续计数的格雷码计数器,以递增或递减1计数,并输出一个输出值转换器电路,其转换从连续计数格雷码计数器输出的格雷码数据 成为与通过用(2升至特定功率减去1)计数获得的十进制计数相对应的格雷码,一次跳过计数。
    • 10. 发明授权
    • Touch panel controller and electronic apparatus employing same
    • 触摸面板控制器和使用其的电子设备
    • US08730197B2
    • 2014-05-20
    • US14124583
    • 2012-01-23
    • Mutsumi HamaguchiMasayuki MiyamotoKunihiko Iizuka
    • Mutsumi HamaguchiMasayuki MiyamotoKunihiko Iizuka
    • G06F3/044
    • G06F3/044G06F3/0416
    • A touch panel controller (1), which can accurately detect changes in capacitance values of respective first and second electrostatic capacitors which are touched, includes: a driving section (4) for driving drive lines (DL1 through DL4) on the basis of a code sequence so as to drive (i) electrostatic capacitors (C31 through C34) provided between the respective drive lines (DL1 through DL4) and a sense line (SL3) and (ii) electrostatic capacitors (C41 through C44) provided between the respective drive lines (DL1 through DL4) and a sense line (SL4) so that (i) a first linear sum of first capacitance values of the respective electrostatic capacitors (C31 through C34) is outputted from the sense line (SL3) and (ii) a second linear sum of second capacitance values of the respective electrostatic capacitors (C41 through C44) is outputted from the sense line (SL4); a differential amplifier (5) for amplifying a difference between the first linear sum and the second linear sum; and a saturation prevention control section (8) for correcting a line dependency between the first capacitance values and the second capacitance values.
    • 可以精确地检测被触摸的各个第一和第二静电电容器的电容值的变化的触控板控制器(1)包括:用于根据代码驱动驱动线(DL1至DL4)的驱动部分(4) 驱动(i)设置在各驱动线(DL1〜DL4)和感测线(SL3)之间的静电电容器(C31〜C34)和(ii)设置在各驱动线之间的静电电容器(C41〜C44) (DL1至DL4)和感测线(SL4),使得(i)从感测线(SL3)输出各静电电容器(C31至C34)的第一电容值的第一线性和,并且(ii)第二 从感测线(SL4)输出各静电电容器(C41〜C44)的第二电容值的线性和; 差分放大器(5),用于放大第一线性和和第二线性和之间的差; 以及用于校正第一电容值和第二电容值之间的线相依性的饱和度防止控制部分(8)。