Video signal transmitting system
US5150207A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Feb 15, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image signal transmitting system which comprises a first field offset sub-sampling circuit for processing a first image signal as a still image, the first image signal being in a relatively lower region of temporal motion frequency in a motion frequency band, a frame/line offset sub-sampling circuit for processing the first image signal, a line offset sub-sampling circuit for processing a second image signal as a moving image, the second image signal being in a relatively higher region of temporal motion frequency in the motion frequency band, a second field offset sub-sampling circuit for processing a third image signal, the third image signal being a middle region of temporal motion frequency in the motion frequency band between the lower temporal frequency region and the higher temporal frequency region, whereby the third image signal is sub-sampled only by the second field offset sub-sampling circuit, and each of the sub-sampling circuits has the same sampling points for the first, second and third image signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.