Signal converting apparatus and signal converting method
US5852470A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1996 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | May 28, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal converting apparatus and a signal converting method which predictively produce highly accurate interpolated pixels in accordance with a classification which precisely reflects a variety of signal characteristics of inputted video signals to provide a high resolution video signal. An activity is evaluated and classified for each block of an inputted video signal (S.sub.1), and stepwise classifications are executed on each block of the inputted video signal (S.sub.1) in accordance with an activity code (c0) obtained as a result of the activity classification. In this way, the accuracy of subsequent classifications can be increased, reflecting the activity characteristic of each block of the inputted video signal (S.sub.1), thus achieving, as a whole, a highly accurate classification of the inputted video signal (S.sub.1). Appropriate prediction coefficients (d1) are read based on the activity code (c0) and a class code (c1) for each block of the inputted video signal (S.sub.1) to produce highly accurate interpolated pixels, thus providing a high resolution video signal (S.sub.2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.