Digital radio satellite and terrestrial ubiquitous broadcasting system using spread spectrum modulation
US5864579A · kind A · utility
98Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/67
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital radio broadcasting system using spread spectrum modulation transmitted from both geosynchronous satellites and terrestrial repeater stations provides multi-program audio services to mobile and fixed user receivers over a large geographical area in an ubiquitous manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.