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    • 5. 发明授权
    • Apparatus for driving a deflecting coil type meter
    • 用于驱动偏转线圈式仪表的装置
    • US4291268A
    • 1981-09-22
    • US88129
    • 1979-10-25
    • Hideo Okuyama
    • Hideo Okuyama
    • G01R5/14G01R5/02G01R5/16G01R7/00G01R7/06G01R23/06G01R19/00G01R7/08
    • G01R5/02G01R7/06
    • A time-constant circuit is employed for gradually decreasing the voltage of an input signal carrying information to be indicated by a deflecting coil type meter so that the voltage of an input signal applied to the following driving stage does not abruptly drop to zero although the power switch of the driving circuit is turned off. A timer circuit responsive to the power switch energizes a relay or a switching circuit to supply the driving stage with electrical power not only for the time that the power switch is on but also for an additional interval after the power switch is turned off so that the driving stage is capable of being responsive to the gradually decreasing voltage causing the pointer of the meter to return to the zero point.
    • 采用时间常数电路来逐渐降低输入信号的电压,该输入信号承载由偏转线圈式仪表指示的信息,使得施加到后续驱动级的输入信号的电压不会突然下降到零,尽管功率 驱动电路的开关关闭。 响应于电源开关的定时器电路为继电器或开关电路供电,不仅在电源开关接通时间而且在电源开关断开之后另外间隔地向驱动级提供电力, 驱动级能够响应于逐渐减小的电压,导致仪表的指针返回到零点。
    • 6. 发明申请
    • Disc loading device
    • 光盘加载设备
    • US20060130081A1
    • 2006-06-15
    • US10513697
    • 2003-05-20
    • Hajime MizunoTsuyoshi MinoteRenji TamuraShinji ItoHideo Okuyama
    • Hajime MizunoTsuyoshi MinoteRenji TamuraShinji ItoHideo Okuyama
    • G11B17/04
    • G11B17/0404
    • A device has excellent usability and makes it possible to, for example, prevent damage to a disc-shaped recording medium and reliably transport the disc-shaped recording medium. The device includes first transporting means (6) and second transporting means (7) disposed on opposite sides of a disc-shaped recording medium (200) that is being transported for transporting the disc-shaped recording medium by being pushed against the outer peripheral surface of the disc-shaped recording medium from the opposite sides. The first transporting means includes a plurality of feed rollers (9) which are disposed apart from each other along a transportation path of the disc-shaped recording medium and which transport the disc-shaped recording medium while transferring it by independently and successively rolling on the outer peripheral surface of the disc-shaped recording medium.
    • 设备具有优异的可用性,并且可以例如防止损坏盘形记录介质并可靠地传送盘形记录介质。 该装置包括第一输送装置(6)和第二输送装置(7),该第二输送装置(7)设置在盘形记录介质(200)的相对两侧,该盘形记录介质被输送以便通过推压盘形记录介质 的盘状记录介质。 第一输送装置包括多个进给辊(9),它们沿着盘形记录介质的输送路径彼此分开设置,并且在盘形记录介质传送的同时通过在 盘状记录介质的外周面。
    • 7. 发明申请
    • Digital signal demodulation of an OFDM signal with error correction
    • 具有纠错的OFDM信号的数字信号解调
    • US20050175113A1
    • 2005-08-11
    • US11014533
    • 2004-12-15
    • Hideo Okuyama
    • Hideo Okuyama
    • H04J11/00H04K1/10H04L27/26
    • H04L27/2675H04L27/2657H04L27/2662
    • A digital signal demodulator digitizes an OFDM signal at a sampling frequency from a sampling oscillator to produce a digital OFDM signal. The digital OFDM signal is converted into I and Q components using a carrier frequency from a carrier oscillator. The IQ components are transformed into digital complex symbols, and pilot signals are extracted from the complex symbols. A processor calculates an inter-symbol difference of phase differences between pilot signals to control the sampling oscillator to correct the sampling frequency; calculates an inter-symbol difference for one of the pilot signals to control the carrier oscillator to correct the carrier frequency; and calculates a phase angle for one of the subcarriers at a frequency in the middle of the plurality of subcarriers for the OFDM signal to control the carrier oscillator to correct the carrier frequency phase.
    • 数字信号解调器以采样频率从采样振荡器数字化OFDM信号,以产生数字OFDM信号。 使用来自载波振荡器的载波频率将数字OFDM信号转换成I和Q分量。 将IQ分量变换为数字复数符号,并从复数符号中提取导频信号。 处理器计算导频信号之间的相位差的符号间差异,以控制采样振荡器以校正采样频率; 计算导频信号之一的符号间差异,以控制载波振荡器来校正载波频率; 并且计算用于OFDM信号的多个子载波中间的频率的一个子载波的相位角,以控制载波振荡器来校正载波频率相位。