公开(公告)号：US20140093234A1

公开(公告)日：2014-04-03

申请号：US13630066

申请日：2012-09-28

申请人： Richard D. Roberts ,  Mathys C. Walma ,  Praveen Gopalakrishnan

发明人： Richard D. Roberts ,  Mathys C. Walma ,  Praveen Gopalakrishnan

IPC分类号： H04J14/00 ,  H04B10/08

CPC分类号： H04B10/564 ,  H04B10/116 ,  H04B10/60 ,  H04B10/616 ,  H04J14/00

摘要： A light transmitter transmits multiple light packets, each formatted to include a same message comprising a series of bits, each bit represented as light that is intensity modulated over a bit period at a frequency indicative of the bit. The light packets are transmitted at different start-times to establish different phases, one for each of the light packets, to permit a light receiver to sample each message at a different phase of a fixed sample timeline that is asynchronous to the bit period and the frequency. The light receiver samples the multiple light packets based on the sample timeline, to sample each received message at one of the different sample phases, then constructs a best series of bits based on the multiple demodulated messages.

摘要翻译： 光发射器发送多个光分组，每个光分组被格式化以包括包括一系列比特的相同消息，每个比特被表示为在指示比特的频率的比特周期上进行强度调制的光。 光分组在不同的启动时间被发送以建立不同的相位，每个光分组一个，以允许光接收机在与比特周期异步的固定采样时间线的不同阶段采样每个消息，并且 频率。 光接收机基于采样时间线对多个光分组进行采样，以在不同采样阶段之一对每个接收到的消息进行采样，然后基于多个解调消息构建最佳的一系列位。

公开(公告)号：US20140093126A1

公开(公告)日：2014-04-03

申请号：US13629747

申请日：2012-09-28

申请人： Richard D. Roberts

发明人： Richard D. Roberts

IPC分类号： G06K9/78

CPC分类号： G06K9/00691 ,  G06K9/32 ,  G06K9/6292

摘要： A light receiver records images of light beams originating from a neighborhood of lights, and demodulates identifiers (IDs) from them at determined image positions. The receiver retrieves a set of neighbor IDs for each demodulated ID and a real-world position of the corresponding light. The receiver cross-references the demodulated IDs against the retrieved sets of neighbor IDs to reveal errors in the demodulated IDs. The receiver corrects the errors to produce correct IDs each indexing a real-world position that is correctly matched to one of the determined light beam positions. The receiver determines a position of the receiver relative to the light transmitter based on the correctly matched real-world and determined light beam positions.

摘要翻译： 光接收器记录来自光附近的光束的图像，并且在确定的图像位置解调来自它们的标识符（ID）。 接收机为每个解调的ID和对应的光的真实世界位置检索一组邻居ID。 接收机根据检索到的邻居ID集合交叉引用解调的ID，以揭示解调的ID中的错误。 接收器校正错误以产生正确的ID，每个ID都索引一个与确定的光束位置之一正确匹配的真实世界位置。 接收机基于正确匹配的真实世界和确定的光束位置来确定接收机相对于光发射机的位置。

公开(公告)号：US20140086587A1

公开(公告)日：2014-03-27

申请号：US13625361

申请日：2012-09-24

申请人： Richard D. Roberts ,  Jing Zhu ,  Mathys C. Walma

发明人： Richard D. Roberts ,  Jing Zhu ,  Mathys C. Walma

IPC分类号： H04B10/10

CPC分类号： H04B10/116

摘要： A light array includes lights that transmit modulated light to indicate their unique light identifiers (IDs) and lights that transmit unmodulated light. A light receiver records images of the light array and recovers the light IDs from the modulated light. The light receiver uses the IDs to retrieve a light map representative of the light array. The receiver aligns the retrieved light map with the recorded images of the light array, and accesses real-world positions of all of the light in the light array, as deployed, based on the aligned light map. The light receiver determines a 3-dimensional position of the light receiver relative to the light array

摘要翻译： 光阵列包括发射调制光以指示其唯一的光标识符（ID）的灯和发射未调制光的灯。 光接收器记录光阵列的图像并从调制光恢复光ID。 光接收器使用ID来检索代表光阵列的光地图。 接收器将所检索的光图与所述光阵列的记录图像对准，并且基于对准的光图，访问所述光阵列中的所有光的实际位置。 光接收器确定光接收器相对于光阵列的三维位置

公开(公告)号：US20140006907A1

公开(公告)日：2014-01-02

申请号：US13539354

申请日：2012-06-30

申请人： Richard D. Roberts ,  Praveen Gopalakrishnan ,  Mathys C. Walma ,  Lei T. Yang

发明人： Richard D. Roberts ,  Praveen Gopalakrishnan ,  Mathys C. Walma ,  Lei T. Yang

IPC分类号： H03M13/00 ,  G06F11/08

CPC分类号： H04L1/0045 ,  H03M13/09

摘要： Embodiments may communicate via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode lighting via receivers that can determine data from light received from the radiator. Some embodiments decode data of a packet transmitted from modulated lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera. Many embodiments determine locations of start frame delimiters in packets. Several embodiments implement repeat decoding on packets of the same data to reduce packet error rates. Some embodiments are intended for indoor navigation via photogrammetry using self-identifying light anchors. In many embodiments, the data signal may be communicated via the light source at frequencies causing flicker that is not perceivable to the human eye.

摘要翻译： 实施例可以经由可以通过接收器进行幅度调制的电磁辐射器（例如发光二极管照明）进行通信，所述接收器可以从从散热器接收的光确定数据。 一些实施例通过具有低采样频率的设备（例如相对便宜的照相机）解码从调制照明发射的分组的数据。 许多实施例确定分组中起始帧分隔符的位置。 几个实施例对相同数据的分组实施重复解码以减少分组错误率。 一些实施例旨在通过使用自识别光锚的摄影测量来进行室内导航。 在许多实施例中，数据信号可以以导致人眼不可感知的闪烁的频率经由光源传送。

公开(公告)号：US20140003823A1

公开(公告)日：2014-01-02

申请号：US13539351

申请日：2012-06-30

申请人： Richard D. Roberts ,  Praveen Gopalakrishnan ,  Mathys C. Walma

发明人： Richard D. Roberts ,  Praveen Gopalakrishnan ,  Mathys C. Walma

IPC分类号： H04B10/04

CPC分类号： H04B10/5563 ,  H04B10/116 ,  H04B10/502 ,  H04L27/04 ,  H04L27/12

摘要： Embodiments may provide a way of communicating via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode (LED) lighting and receivers or detectors that can determine data from light received from the amplitude modulated electromagnetic radiator. Some embodiments may provide a waveform in the form of chips at a chipping clock frequency that switch a light source between on and off states to communicate via light sources that can be amplitude modulated such as LED lighting. Some embodiments may provide a method of transmitting the waveform via modulated LED lighting. Some embodiments are intended for indoor navigation via photogrammetry (i.e., image processing) using self-identifying LED light anchors. In many embodiments, the data signal may be communicated via the light source at amplitude modulating frequencies such that the resulting flicker is not perceivable to the human eye.

摘要翻译： 实施例可以提供通过可以被调幅的电磁辐射器或光源（例如发光二极管（LED）照明）和可以从从调幅电磁辐射器接收的光确定数据的接收器或检测器进行通信的方式。 一些实施例可以以切片时钟频率提供以切片时钟频率的芯片形式的波形，该光纤切换状态之间的光源通过可被调幅的光源（例如LED照明）进行通信。 一些实施例可以提供通过经调制的LED照明来发送波形的方法。 一些实施例旨在通过使用自识别LED光锚的摄影测量（即，图像处理）进行室内导航。 在许多实施例中，可以以幅度调制频率通过光源传送数据信号，使得所得到的闪烁对人眼不能察觉。

公开(公告)号：US20120162633A1

公开(公告)日：2012-06-28

申请号：US12975451

申请日：2010-12-22

申请人： Richard D. Roberts ,  Praveen Gopalakrishnan

发明人： Richard D. Roberts ,  Praveen Gopalakrishnan

IPC分类号： G01C3/08

CPC分类号： G01S5/16

摘要： A positioning system and method for determining a coordinate of an object may comprise a positioning transmitter system and a positioning receiver system. The positioning transmitter system includes at least four light sources and a master anchor to modulate the light sources to emit modulated light signals each having a modulation frequency. The positioning receiver system comprises a lens to focus the light signals onto an optical sensor, an envelope detector to receive a signal from the optical sensors and provide output signals corresponding to the modulation frequency, and positioning detection circuitry. The positioning detection circuitry receives calibration data; determines at least four phase difference of arrival (PDOA) pairs based on the output signals from the envelope detector; determines at least four phase corrected PDOA pairs based on the calibration data and the PDOA pairs; determines at least four linear distance differences based on the phase corrected PDOA pairs; and determines the coordinate of the object based on the linear distance differences and the calibration data.

摘要翻译： 用于确定对象的坐标的定位系统和方法可以包括定位发射机系统和定位接收机系统。 定位发射机系统包括至少四个光源和主锚，以调制光源以发射各自具有调制频率的调制光信号。 定位接收器系统包括将光信号聚焦到光学传感器上的透镜，包络检测器，用于接收来自光学传感器的信号并提供对应于调制频率的输出信号和定位检测电路。 定位检测电路接收校准数据; 基于来自包络检测器的输出信号确定至少四个相位差到达（PDOA）对; 基于校准数据和PDOA对确定至少四个相位校正的PDOA对; 基于相位校正的PDOA对确定至少四个线性距离差; 并且基于线性距离差和校准数据确定对象的坐标。

公开(公告)号：US20110144941A1

公开(公告)日：2011-06-16

申请号：US12639236

申请日：2009-12-16

申请人： Richard D. Roberts ,  Praveen Gopalakrishnan

发明人： Richard D. Roberts ,  Praveen Gopalakrishnan

IPC分类号： G06F15/00 ,  G01C3/08 ,  G01S1/30

CPC分类号： G01S5/02 ,  G01B11/002 ,  G01B11/14 ,  G01S5/06 ,  G01S5/16 ,  G01S11/12

摘要： Methods and systems to determine at multi-dimensional coordinates of an object based on propagation delay differences of multiple signals received from the object by each of a plurality of sensors. The signals may include optical signals in a human visible spectrum, which may be amplitude modulated with corresponding frequency tones. An envelope may be detected with respect to each of the sensors, and signals within each envelope may be separated. A phase difference of arrival may be determined for each of the signals, based on a difference in propagation delay times of the signal with respect to multiple sensors. The phase differences of arrival may be converted to corresponding distance differences between a corresponding transmitter and the corresponding sensors. A linear distance and a perpendicular offset distance may be determined from a combination the distance differences, a distance between the corresponding transmitters, and a distance between the corresponding sensors.

摘要翻译： 基于由多个传感器中的每个传感器从对象接收的多个信号的传播延迟差异来确定对象的多维坐标的方法和系统。 这些信号可以包括人类可见光谱中的光信号，其可以用对应的频率音调进行幅度调制。 可以相对于每个传感器检测信封，并且可以分离每个信封内的信号。 可以基于信号相对于多个传感器的传播延迟时间的差异，针对每个信号确定到达的相位差。 到达的相位差可以转换成对应的发射机和相应的传感器之间的对应的距离差。 可以从距离差，相应的发射机之间的距离和相应的传感器之间的距离的组合确定线性距离和垂直偏移距离。

公开(公告)号：US07822398B2

公开(公告)日：2010-10-26

申请号：US11856100

申请日：2007-09-17

申请人： Richard D. Roberts

发明人： Richard D. Roberts

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H01Q3/267 ,  H04B7/0613 ,  H04B7/0837 ,  H04B17/21

摘要： Device, system, and method of phased-array calibration. In some demonstrative embodiments, a wireless communication device may include an array of antenna elements; a calibration element located at a predefined location relative to the antenna elements; and an antenna controller capable of calibrating at least one beam forming weight of at least one antenna element of the array of antenna elements based on a detected phase of a calibration signal transmitted via one of the calibration element and the antenna element and received via another of the calibration element and the antenna element. Other embodiments are described and claimed.

摘要翻译： 相控阵校准的器件，系统和方法。 在一些演示实施例中，无线通信设备可以包括天线元件阵列; 位于相对于天线元件的预定位置的校准元件; 以及天线控制器，其能够基于经由所述校准元件和所述天线元件中的一个发送的校准信号的检测相位来校准所述天线元件阵列中的至少一个天线元件的至少一个波束形成权重并经由另一个 校准元件和天线元件。 描述和要求保护其他实施例。

公开(公告)号：US07738548B2

公开(公告)日：2010-06-15

申请号：US11620893

申请日：2007-01-08

申请人： Richard D. Roberts ,  Terry Tabor

发明人： Richard D. Roberts ,  Terry Tabor

IPC分类号： H03K5/159

CPC分类号： H04B7/2628

摘要： A system and method for communicating includes a transmitter that transmits a communication signal having a plurality of successive frames, with each frame formed with alternatively arranged N known data symbols and M unknown data symbols such that the N known data symbols as training symbols. The communications signals are received within a receiver. The N known data symbols are synchronized at the receiver by correlating and time averaging the N known data symbols.

摘要翻译： 用于通信的系统和方法包括发送具有多个连续帧的通信信号的发射机，其中每个帧由备选地布置的N个已知数据符号和M个未知数据符号形成，使得N个已知数据符号作为训练符号。 在接收机内接收通信信号。 通过对N个已知数据符号进行相关和时间平均，N个已知数据符号在接收机处被同步。

公开(公告)号：US20090231225A1

公开(公告)日：2009-09-17

申请号：US12215542

申请日：2008-06-27

申请人： Debabani Choudhury ,  Richard D. Roberts ,  Ulun Karacaoglu

发明人： Debabani Choudhury ,  Richard D. Roberts ,  Ulun Karacaoglu

IPC分类号： H01Q21/00 ,  H01Q19/30 ,  H01Q13/10 ,  H01Q9/04

CPC分类号： H01Q1/246 ,  H01Q1/2283 ,  H01Q1/2291 ,  H01Q1/38 ,  H01Q3/26 ,  H01Q3/34 ,  H01Q9/0407 ,  H01Q21/065 ,  H01Q21/067 ,  H01Q21/205 ,  H01Q21/24 ,  H01Q25/00 ,  H01Q25/04 ,  H04B7/0682

摘要： Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.

摘要翻译： 本文描述了实现三维波束覆盖的无线天线阵列系统的实施例。 可以描述和要求保护其他实施例。