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    • 3. 发明授权
    • Phase shift keying signal demodulation method and apparatus
    • 相移键控信号解调方法及装置
    • US4760344A
    • 1988-07-26
    • US12612
    • 1987-02-09
    • Akihiko TakaseKenji Ochiai
    • Akihiko TakaseKenji Ochiai
    • H04L27/22H04L27/233H03D3/18
    • H04L27/2332
    • A demodulator for demodulating a phase shift keying signal to regenerate a data signal. The demodulator comprises a clock generator for generating three-phase clock signals which are of substantially the same frequency as a carrier frequency of the phase shift keying signal and 120.degree. out of phase from each other, phase difference detectors for detecting phase differences of the phase shift keying signal relative to respective three-phase clock signals, a timing extractor for producing a data clock signal by fetching the three-phase clock signals and detected phase differences, and a phase difference change detector for producing the data signal by detecting the presence or absence of a change of phase difference between portions of the phase shift keying signal corresponding to preceding and succeeding bits of the data clock signal.
    • 解调器,用于解调相移键控信号以再生数据信号。 解调器包括时钟发生器,用于产生与相移键控信号的载波频率基本相同的频率和彼此相差120°的三相时钟信号,用于检测相位相位差的相位差检测器 移位键控信号相对于各个三相时钟信号;定时提取器,用于通过取出三相时钟信号和检测到的相位差产生数据时钟信号;以及相位差变化检测器,用于通过检测数据信号的存在或 不存在与数据时钟信号的前后位相对应的相移键控信号的部分之间的相位差的变化。
    • 6. 发明授权
    • Electronic apparatus
    • 电子仪器
    • US08063874B2
    • 2011-11-22
    • US12471781
    • 2009-05-26
    • Masanori KatayanagiTomonori SunazukaKenji Ochiai
    • Masanori KatayanagiTomonori SunazukaKenji Ochiai
    • G09G3/36
    • H05B41/42G09G3/3406G09G2320/0285G09G2320/0626G09G2360/144
    • An electronic apparatus includes: a luminance adjustable display module; an illuminance sensor configured to detect illuminance around the electronic apparatus; and a controller configured to: read the illuminance from the illuminance sensor; determine luminance corresponding to the illuminance; control the luminance adjustable display module to set luminance to the determined luminance; and set a waiting time based on the determined luminance, the waiting time being a time to a next time point of illuminance reading and luminance control. The controller is configured to set the waiting time short when the determined luminance is high and to set the waiting time long when the determined luminance is low.
    • 电子设备包括:亮度可调显示模块; 照度传感器,被配置为检测所述电子设备周围的照度; 以及控制器,被配置为:从所述照度传感器读取照度; 确定与照度相对应的亮度; 控制所述亮度可调显示模块以将亮度设定为所确定的亮度; 并且基于所确定的亮度设置等待时间,等待时间是下一个照度读取和亮度控制的时间点。 控制器被配置为当确定的亮度高时将等待时间设置为短,并且在确定的亮度低时将该等待时间设置为长。