Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants
US5565926A · kind A · utility
50Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1994 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Dec 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/015
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting a digital television signal using a first multipoint constellation comprised of a plurality of identical second constellations each having fewer points than the first constellation and each positioned in a different section of the first constellation. The receiver includes a decoder which decodes data as encoded in one of the second constellations. Additional bits, transmitted with the data, are also decoded at the receiver to identify which to section of the first constellation the second constellation belongs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.