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    • 15. 发明授权
    • Reconstructing light-based communication signals using an alias frequency
    • 使用别名频率重建基于光的通信信号
    • US09564966B1
    • 2017-02-07
    • US14870445
    • 2015-09-30
    • Christian BreuerAnant AggarwalBarry Stout
    • Christian BreuerAnant AggarwalBarry Stout
    • H04B10/00H04B10/079H04W4/02G01J1/42
    • H04B10/0795H04B10/116H04W4/023
    • Methods and systems are described for sampling an LCOM message signal at a rate less than the Nyquist rate (i.e., an “alias frequency”) and accurately reconstructing the entire LCOM message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. The described methods and system take advantage of the repetition of LCOM signals, sampling an LCOM signal at a frequency less than the Nyquist frequency over at least two repetitions of a signal waveform, thereby collecting sufficient samples to accurately reconstruct the signal. The samples of each successive signal waveform repetition are offset from one another so that different points on the waveform are sampled, thus facilitating reconstruction of the signal.
    • 描述了以低于奈奎斯特速率(即,“混叠频率”)的速率对LCOM消息信号进行采样的方法和系统,并且使用典型移动计算机的光接收器(例如,数字照相机)精确地重构整个LCOM消息 设备,例如智能电话,平板电脑或其他移动计算设备。 所描述的方法和系统利用了LCOM信号的重复,在信号波形的至少两次重复下以小于奈奎斯特频率的频率采样LCOM信号,从而收集足够的样本以精确地重构信号。 每个连续信号波形重复的样本彼此偏移,使得波形上的不同点被采样,从而有助于重建信号。
    • 16. 发明申请
    • CONTROLLING A SYSTEM THAT INCLUDES LIGHT-BASED COMMUNICATION (LCOM)-ENABLED LUMINAIRES
    • 控制包括基于光的通信(LCOM) - 启动的灯泡的系统
    • US20150282282A1
    • 2015-10-01
    • US14668689
    • 2015-03-25
    • Christian BreuerAnant AggarwalBarry Stout
    • Christian BreuerAnant AggarwalBarry Stout
    • H05B37/02H04B10/116H04M1/725
    • H05B37/0272G08C17/02G08C2201/93H04B10/116H04L61/2007H04L61/6022H04M1/72533H04W84/12H05B37/0218H05B37/0236
    • Techniques are disclosed for controlling a system including one or more light-based communication (LCom)-enabled luminaires. In some cases, the system may include: one or more LCom-enabled luminaires; a light sensor configured to detect LCom signals emitted from the luminaires; a computing device operatively coupled to the light sensor and configured to decode data from the LCom signals; and a controller configured to control the light output from at least one of the luminaires. The techniques may include calibrating, detecting, or otherwise setting up the system, such that the computing device knows at least one of the unique identification and position of each luminaire in the system. Once the initial set up is completed, the system can be controlled in a number of ways, such as manually or automatically controlling the light output from the luminaires for various applications, such as providing ambient light that complements video or audio content.
    • 公开了用于控制包括一个或多个基于光通信(LCom)通信的灯具的系统的技术。 在某些情况下,该系统可以包括:一个或多个启用LCom的灯具; 光传感器,被配置为检测从所述灯具发射的LCom信号; 计算设备,其可操作地耦合到所述光传感器并且被配置为从所述LCom信号解码数据; 以及控制器,被配置为控制来自至少一个所述灯具的光输出。 这些技术可以包括校准,检测或以其他方式设置系统,使得计算设备知道系统中每个灯具的独特识别和位置中的至少一个。 一旦初始设置完成,系统可以以多种方式进行控制,例如手动或自动控制各种应用的灯具的光输出,例如提供补充视频或音频内容的环境光。