Digital formatting system
US4347619A · kind A · utility
15Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved method and apparatus for transforming digital information into a special format similar to that of a standard color video signal. The special format includes a multi-level baseband component corresponding to the luminance component of a standard video signal, and a phase and/or amplitude-modulated subcarrier corresponding to the chrominance component of a video signal. This format is highly efficient and takes better advantage of high signal-to-noise ratio channels, and the signal can be transmitted over standard video channels and conventional video circuitry can be used to process it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.