Magnitude equalization of audio-based data transmissions
US12267188B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Nov 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/38
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems are presented for correcting interference to audio transmissions containing data. In one embodiment, a method is presented that includes receiving an audio transmission that includes data modulated onto an audio carrier signal. A first portion of the audio transmission may be detected that includes predetermined frequencies that are produced at predetermined times. The method may further include determining a frequency distribution for the predetermined frequencies and identifying magnitudes of the predetermined frequencies within the frequency distribution. A second portion of the audio transmission may then be equalized according to the magnitudes of the predetermined frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.