VSB mode selection system
US5987070A · kind A · utility
29Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
VSB data is transmitted in a frame which includes a frame sync, a segment sync, a mode control, and a plurality of data symbols. The mode control indicates the number of modulation levels of the data symbols and includes 2-level symbols forming the following byte: PABCPABC. P is a parity bit, and ABC represents a selected one of a plurality of data constellations defining the modulation levels of the data symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.