Dual standard video signals processor
US6133956A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 7, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Apr 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processor interpolating lines in a vertical filter (24) in dependence on whether the lines are of a 625 line frame or a 525 line frame. The interpolated lines are filtered in a horizontal filter (26). The resultant lines are vertically and horizontally decimated by controlling the writing of the lines into a FIFO (28). A reduced size image is produced which has the same number of lines and pixels per line for both 525 and 625 line frames. The reduced size image is data compressed in a JPEG codec (50). The compression factor for a 525/60 signal is 6/5 of that for a 625/50 signal so the data rate per unit time is the same for both signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.