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Method and device for transmitting identifier using visible light communication

A technology of visible light communication and identifiers, which is applied in transmission systems, lighting devices, synchronization devices, etc., and can solve problems such as inability to receive

Active Publication Date: 2019-05-28
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, erasure of parts of the receiver that may inherently transmit data due to the rolling shutter in the receiver
Therefore, the receiver may not be able to receive all the information output by the light source

Method used

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  • Method and device for transmitting identifier using visible light communication
  • Method and device for transmitting identifier using visible light communication
  • Method and device for transmitting identifier using visible light communication

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Embodiment Construction

[0055] This disclosure describes the use of visible light communication (VLC) to transmit and receive data. In some examples, the described methods, systems, and devices can use rateless VLC, a system in which an optical transmission device can repeatedly (and in some cases, continuously) transmit a piece of information (e.g., an identifier) And a VLC compatible device or devices in the vicinity of the optical transmission device can receive and decode the transmission of the identifier until enough identifiers are captured to reconstruct the communication method of the identifier. In some cases, all of the identifiers may be captured. Each receipt of the identifier may convey the same information. In fact, the symbol of the identifier may be lost (erased) due to a temporary interruption of the VLC link (eg due to physical obstruction, or due to an increase in the distance between the optical transmission means and the receiver of the VLC compatible device). Because of this ...

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PUM

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Abstract

Methods, systems, and apparatus are described for transmitting an identifier using visible light communication VLC and for generating a plurality of identifiers for transmission using VLC. Input identifying an illumination factor associated with a light source is received. A first set of modulation parameters is modified for transmission of the identifier using VLC. The first set of modulation parameters are modified based on the illumination factor. A signal having the identifier encoded therein is applied to the light source. The signal is applied according to the first set of modulation parameters. Another method includes identifying a number of optical transmission devices, generating a plurality of identifiers based on said identified number of optical transmission devices, storing said generated identifiers, and for each of said plurality of identifiers An identifier determines a plurality of cyclic shifts, and identifiers matching the identified cyclic shift are removed from the plurality of identifiers.

Description

[0001] Cross References to Related Applications [0002] This patent application asserts U.S. Patent Application No. 14 / 742,185, filed June 17, 2015, by Jovicic et al., entitled "Transmission of Identifiers Using Visible Light Communication" and Jovicic et al. Priority to U.S. Provisional Patent Application No. 62 / 013,885, entitled "Enhanced Transmission of Unique Identifiers Using Visible Light Communication," filed June 18, 2014, which Each of which is assigned to the assignee of the present invention. technical field [0003] The present disclosure relates, for example, to wireless communication systems, and more particularly to techniques for transmitting an identifier, such as a unique identifier for an optical transmission device, using visible light communication. Background technique [0004] Visible light communication (VLC) involves the transmission of information by modulating the light intensity of a light source, such as modulating the light intensity of one o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H05B44/00
CPCH04B10/116H05B45/12H04B10/1141H04L7/041
Inventor 艾雷克桑达·乔维西克马哈德维·皮尔赖·沛鲁默尔
Owner QUALCOMM INC