公开(公告)号：US20160259421A1

公开(公告)日：2016-09-08

申请号：US15028402

申请日：2014-10-08

Applicant: UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATION

Inventor： Shyamnath Gollakota ,  Bryce Kellogg ,  Vamsi Talla ,  Rajalakshmi Nandakumar

IPC: G06F3/01 ,  H04M1/725 ,  H04W24/02 ,  G06F3/16

CPC classification number: G06F3/017 ,  G06F3/011 ,  G06F3/03 ,  G06F3/165 ,  H04M1/72558 ,  H04W24/02

Abstract: Example devices, systems, and methods described herein extract gesture information from wireless signals. Examples described herein may extract gesture information from changes in the magnitude of the amplitude of the received wireless signals, or portions of the received wireless signals (e.g., channel state information, RSSI information, RCPI information). Time-domain classification of gestures may proceed based on the amplitude changes. In this manner, sufficiently low power operation may be achieved to enable “through-the-pocket” gesture recognition on mobile devices in some examples.

Abstract translation: 本文描述的示例性设备，系统和方法从无线信号提取手势信息。 本文描述的示例可以从接收的无线信号的幅度或接收的无线信号的部分（例如，信道状态信息，RSSI信息，RCPI信息）的幅度的变化中提取手势信息。 手势的时域分类可以根据幅度变化进行。 以这种方式，可以实现足够低的功率操作，以在一些示例中实现移动设备上的“通过口袋”手势识别。

公开(公告)号：US09680520B2

公开(公告)日：2017-06-13

申请号：US14795719

申请日：2015-07-09

Applicant: University of Washington through its Center For Commercialization

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Vincent Liu ,  Aaron N. Parks ,  Vamsi Talla

IPC: H04B1/38 ,  H04B1/40

CPC classification number: H04B1/40

Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.

公开(公告)号：US20150311944A1

公开(公告)日：2015-10-29

申请号：US14795719

申请日：2015-07-09

Applicant: University of Washington through its Center For Commercialization

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Vincent Liu ,  Aaron N. Parks ,  Vamsi Talla

IPC: H04B1/40

CPC classification number: H04B1/40

Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.

Abstract translation: 描述了用于调制环境RF信号的后向散射的装置，系统，环境后向散射收发器和方法。 示例性系统可以包括环境后向散射收发器，其包括被配置为接收反向散射的环境射频（RF）信号的天线。 环境后向散射收发器被配置为解调后向散射的环境RF信号以检索第一数据。 背散射环境RF信号是通过以第一频率向外散射环境RF信号而产生的。 环境RF信号通过被调制编码以在第二频率提供第二数据。