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    Techniques for communication with body-carried devices
    1.
    发明授权
    Techniques for communication with body-carried devices 有权

    公开(公告)号：US10009099B2

    公开(公告)日：2018-06-26

    申请号：US14229892

    申请日：2014-03-29

    Applicant: INTEL CORPORATION

    Inventor： Mathys C. Walma ,  Richard D. Roberts ,  Bradley A. Jackson

    IPC: H04B10/00 ,  H04B10/116 ,  H04B10/114

    CPC classification number: H04B10/116 ,  H04B10/1149

    Abstract: Various embodiments are directed to techniques for employing a camera to receive multiple light transmissions conveying at least identifying data from multiple body-carried devices to enable locations of those devices within a venue to be determined and transmissions to individual ones of those devices to be made. An apparatus to communicate via light transmissions includes an analysis component to analyze a set of consecutively captured frames of a portion of a venue to determine whether a light source present in at least a predetermined number of the consecutively captured frames is a light transmission from a body-carried device located within the portion of the venue, and to demodulate the light transmission to retrieve an identification (ID) data associated with the body-carried device from the light transmission; and a communications component to employ the ID data to wirelessly transmit a command to the body-carried device. Other embodiments are described and claimed.

    Clock tracking algorithm for twinkle VPPM in optical camera communication systems
    2.
    发明授权
    Clock tracking algorithm for twinkle VPPM in optical camera communication systems 有权

    公开(公告)号：US09923638B1

    公开(公告)日：2018-03-20

    申请号：US15388533

    申请日：2016-12-22

    Applicant: Intel Corporation

    Inventor： Javier Perez-Ramirez ,  Richard D. Roberts

    IPC: H04B10/00 ,  H04B10/524 ,  H04B10/116 ,  H04B10/50 ,  H04N5/376 ,  H04N5/225 ,  H04N5/232 ,  H04J14/00

    CPC classification number: H04B10/524 ,  H04B10/112 ,  H04B10/116

    Abstract: Optical signaling is implemented by modulating visible light with variable pulse position modulation (VPPM). VPPM is a composite waveform and its optical signal includes a Start Frame Delimiter (SFD) which indicates start of optical signaling. To identify modulated lights, the duty cycle is periodically changed in the waveform to induce an AM envelope at a frequency higher than the response of the human eye. The signal is then sampled via a camera producing an alias frequency that produces noticeable blinking. Because the communication is asynchronous, the desired camera frame rate (fc) in relationship to the modulation bit rate timing clock (or symbol rate, fs) is only approximate. Consequently, a frequency offset develops between the camera frame rate (fc) and the symbol rate (fs) in transmission of long packets. The disclosed embodiments provide a detection algorithm, system and apparatus to provide clock offset tracking and correction.

    Techniques for wirelessly docking to a device
    5.
    发明授权
    Techniques for wirelessly docking to a device 有权
    无线对接设备的技术

    公开(公告)号：US09237216B2

    公开(公告)日：2016-01-12

    申请号：US13794647

    申请日：2013-03-11

    Applicant: Intel Corporation

    Inventor： Richard D. Roberts ,  Mathys C. Walma ,  Carlos Cordeiro

    IPC: H04Q5/22 ,  H04M1/725 ,  H04B5/00 ,  H04B7/00 ,  H04J1/16 ,  H04L12/28 ,  G08C17/00 ,  H04L29/06 ,  G06F13/00

    CPC classification number: H04W4/023 ,  H04L43/0864 ,  H04M1/7253 ,  H04M2250/04 ,  H04W8/005 ,  H04W84/12

    Abstract: Examples are disclosed for a mobile device to wirelessly dock to a device. In some examples, a mobile device may receive an indication to identify a device for wirelessly docking. The mobile device may gather identification for possible devices to wirelessly dock. A ranging technique may be implemented using a given frequency band to identify a device within a shortest distance from the mobile device from among the possible devices. The device having the shortest distance may be selected and a wireless dock may then be established. Other examples are described and claimed.

    Abstract translation: 公开了用于移动设备无线地对接到设备的示例。 在一些示例中，移动设备可以接收用于标识用于无线对接的设备的指示。 移动设备可以收集可能的设备的标识以进行无线对接。 可以使用给定频带来实现测距技术，以从可移动设备中识别距移动设备最短​​距离内的设备。 可以选择具有最短距离的设备，然后可以建立无线基站。 其他的例子被描述和要求保护。

    Light receiver position determination
    6.
    发明授权
    Light receiver position determination 有权
    光接收器位置确定

    公开(公告)号：US09014564B2

    公开(公告)日：2015-04-21

    申请号：US13625361

    申请日：2012-09-24

    Applicant: Intel Corporation

    Inventor： Richard D. Roberts ,  Jing Zhu ,  Mathys C. Walma

    IPC: H04B10/00 ,  H04B10/116

    CPC classification number: H04B10/116

    Abstract: 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.

    Abstract translation: 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。

    Collision warning using ultra wide band radar
    7.
    发明授权
    Collision warning using ultra wide band radar 有权

    公开(公告)号：US11543519B2

    公开(公告)日：2023-01-03

    申请号：US16456243

    申请日：2019-06-28

    Applicant: Intel Corporation

    Inventor： Richard D. Roberts ,  Melissa Cowan ,  Saiveena Kesaraju

    IPC: G01S13/933 ,  G08G5/00 ,  G05D1/10 ,  B64C39/02 ,  G08G5/04

    Abstract: A method of collision warning using broad antenna pattern ultra-wide band (UWB) radar includes emitting a first radar ping from a broad beam UWB antenna and receiving a first return signal identifying an object. A first hemisphere with a first radius is determined for the object. A second ping, second return and second hemisphere is defined for the object. At the intersection of the hemispheres, an object ring is defined. The radius of the object ring is compared with the radius of a collision cylinder (e.g., representing a safe distance around a system or device, such as a drone). The object may be identified as posing a collision threat when the radius of the object ring is smaller than the radius of the collision cylinder.

    Techniques for optical wireless communication
    8.
    发明授权
    Techniques for optical wireless communication 有权

    公开(公告)号：US10135530B2

    公开(公告)日：2018-11-20

    申请号：US15810994

    申请日：2017-11-13

    Applicant: Intel Corporation

    Inventor： Richard D. Roberts ,  Javier Perez-Ramirez ,  Parmoon Seddighrad ,  Roni Abiri

    IPC: H04B10/00 ,  H04B10/116 ,  H04B10/524 ,  H04B10/58 ,  H04B10/61 ,  H04L7/00

    Abstract: Optical wireless communication techniques are described and claimed. In one embodiment, the disclosure relates to method and apparatus to provide optical signaling with visible light having variable pulse position modulation (VPPM). The optical signal includes a Start Frame Delimiter (SFD) which indicates beginning of an asynchronous optical signaling. The VPPM signaling includes a lower frequency time varying amplitude component that when subsampled by a low frame rate camera results in alias induced flicker or blinking. Such signals are quickly recognizable as signals with modulated data. In another embodiment, the disclosure provides a system, device and method for decoding a Start Frame Delimiter (SFD) to indicate arrival of incoming VPPM optical data.

    Apparatus configured for visible-light communications (VLC) using under-sampled frequency shift on-off keying (UFSOOK)
    9.
    发明申请
    Apparatus configured for visible-light communications (VLC) using under-sampled frequency shift on-off keying (UFSOOK) 审中-公开
    使用欠采样频移开关键控（UFSOOK）配置用于可见光通信（VLC）的设备

    公开(公告)号：US20160294470A1

    公开(公告)日：2016-10-06

    申请号：US15132612

    申请日：2016-04-19

    Applicant: Intel Corporation

    Inventor： Richard D. Roberts ,  Mathys C. Walma ,  Praveen Gopalakrishnan

    IPC: H04B10/116 ,  H04B10/50 ,  H04L27/22 ,  H04L25/49 ,  H04L27/12 ,  H04L27/144 ,  H04B10/556 ,  H04B10/524

    CPC classification number: H04B10/116 ,  H04B10/502 ,  H04B10/524 ,  H04B10/5563 ,  H04B10/60 ,  H04L25/4902 ,  H04L27/02 ,  H04L27/10 ,  H04L27/12 ,  H04L27/144 ,  H04L27/2096 ,  H04L27/223

    Abstract: 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 method of transmitting/encoding data via modulated LED lighting and other embodiments may provide receiving/decoding data from the modulated LED lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera (as might be found in a smart phone). 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.

    Abstract translation: 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。 一些实施例可以提供通过经调制的LED照明来发送/编码数据的方法，并且其他实施例可以通过具有低采样频率的设备（例如相对便宜的照相机）提供来自经调制的LED照明的数据的接收/解码 在智能手机中）。 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。

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