System and method for wirelessly transmitting and receiving digital data using acoustical tones
US7764716B2 · kind B2 · utility
3Cited by
42References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Jul 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and a method for the transmission and reception of digital data wirelessly using acoustic tones comprises a device having an encoder, a modulator system, a demodulator system, and a decoder. The modulator system uses dual tone multiple frequency (DTMF) tones that are amplitude modulated. The received signal is demodulated and detected by Fourier analysis. An expanded Hamming code based decoder is used for correcting errors occurring during transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.