Video signal processor for generating a progressive scanning format signal
US6037990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processor for preventing image damage resulting from when a first signal and a second signal are converted into each other. When a first signal (an interlaced scanning format signal) is inputted, according to a mode discriminating signal from a mode discriminator, a mixer/selector receives the motion detecting signal from the mode discriminator, adaptively mixes both outputs of a delay circuit and a line interpolating filter (IPF) and uses the combined outputs as an interpolation signal. When a second signal (a progressive scanning format signal converted to an interlaced scanning format signal) is inputted, the mixer/selector selects either the output of the second signal or the output of a delay circuit according to the mode discriminating signal and the field indexes from the mode discriminator and makes it as an interpolation signal. When an input signal is converted from a first signal to a second signal, the mixer/selector receives the motion detecting signal from the mode discriminator and selects the output from the line interpolating filter as an interpolation signal (intra-field interpolation) for at least one field of the changed-over signal according to t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.