Method of ultrasonic data communication and apparatus for carrying out the method
US4045767A · kind A · utility
38Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1973 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Sep 18, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an ultrasonic data communication system, each datum is represented by a specific ultrasonic wave signal composed of plural frequency components arranged according to a specific one of predetermined frequency permutations so that the data transmission time can be considerably reduced without the influence of reverberation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.