Image signal transmission apparatus
US5196932A · kind A · utility
5Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Apr 24, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/587
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image signal processing apparatus, first image data and second image data comprising a plurality of different sample data are input at the same time and are output sequentially following processing wherein data is subjected to thinning-out in direction horizontally of a screen so as to make locations of vertical direction screen data different from each other between the odd-number field period and the even-number field period. The thinned-out sample data are prediction-coded to output prediction-coded data, thus resulting in a substantial reduction of data quantity without deteriorating picture quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.