Insertion of a secondary binary information stream into a main symbol stream of a digital modulation
US8873670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2005 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Jul 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/186
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
There is disclosed a method of inserting a secondary stream of binary information into a main symbol stream of at least one standard digital modulation. The stream to be transmitted resulting from the insertion of the secondary stream in the main stream is a symbol stream of a modified digital modulation. The stream to be transmitted has the same symbol rate as the main stream. The sequence of symbols of the stream to be transmitted is encoded according, cumulatively, to a first condition over at least two consecutive symbols of the main stream, on the one hand; and to a second condition on a current bit or a plurality of current bits of the secondary stream, on the other hand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.