Television image format conversion system including noise reduction apparatus
US5384599A · kind A · utility
19Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television signal receiver processes a television signal representing a letterbox image display format with a main image region, and a bar region containing auxiliary information to help convert from interlaced to progressive scanning. The auxiliary information is processed in a signal path including a nonlinear amplitude expander and apparatus for modifying the operation of the signal path as a function of the noise content of the television signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.