Communicating information between devices using ultra high frequency audio
US9786291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Jan 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B11/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A client device encodes data into an audio signal and communicates the audio data to an additional client device, which decodes the data from the audio signal. The data is partitioned into characters, which are subsequently partitioned into a plurality of sub-characters. Each sub-character is encoded into a frequency, and multiple frequencies that encode sub-characters are combined by the client device to generate an audio signal. Frequencies encoding sub-characters may be above 16 kilohertz, so the sub-characters are transmitted using frequencies that are inaudible to humans. The audio signal is communicated to an additional client device, which decodes frequencies from the audio signal to sub-characters, which are then combined into characters by the additional client device to generate the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.