Processing apparatus for progressive scan generation of a television signal
US5534935A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A processing apparatus employs motion-adaptive processing to create a progressive scanning signal from an interlaced television scanning signal. The interlaced scanning signal is input to a field delay circuit and to a vertical highpass filter, the output of the field delay circuit is input to a field delay circuit and to a vertical lowpass filter, and the output of the field delay circuit is input to a vertical highpass filter. The outputs of the vertical highpass filters are added together at an adder. The output of the adder is added to the output of the vertical lowpass filter to create an interpolation signal. The interpolation signal and direct-type signal, being time-compressed, are coupled to a switch where they are alternately selected to obtain a progressive scanning signal with improved image quality, irrespective of whether the input signal represents a still or moving image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.