Television – Format conversion – Line doublers type
Patent
1996-05-28
1998-12-22
Kostak, Victor R.
Television
Format conversion
Line doublers type
348458, 382300, H04N 701
Patent
active
058524703
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).
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Fujimori Yasuhiro
Kondo Tetsujiro
Nakaya Hideo
Takahashi Kenji
Frommer William S.
Kostak Victor R.
Sony Corporation
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