Television – Format conversion – Changing number of lines for standard conversion
Patent
1996-03-21
1999-10-12
Peng, John K.
Television
Format conversion
Changing number of lines for standard conversion
348409, 348415, 348437, 348438, H04N 521
Patent
active
059661836
ABSTRACT:
The present invention relates to a signal converter and a signal conversion method in which an interpolated image is formed on the basis of suitable classification according to features of an input image signal to obtain a high-definition image signal. In a frequency characteristic determination section, frequency characteristics of an input image signal are classified and evaluated with respect to each of predetermined unit blocks. On the basis of the result of this classification, the desired one of a plurality of pixel patterns is selected with respect to each of the unit blocks of the input image signal, thereby setting a spatial class. In a classification section, the input image signal forming the selected pixel pattern undergoes data compression processing by the number of quantization bits according to the frequency characteristics, thereby forming a spatial class after compression. Interpolated pixels are formed from the input image signal by using prediction coefficients or predicted values based on the spatial class after compression.
REFERENCES:
patent: 4648119 (1987-03-01), Wingfield et al.
patent: 4684985 (1987-08-01), Nakagaki et al.
patent: 5010402 (1991-04-01), Nishibo et al.
patent: 5416857 (1995-05-01), Chen et al.
patent: 5638128 (1997-06-01), Hoogenboom et al.
Fujimori Yasuhiro
Kondo Tetsujiro
Frommer William S.
Peng John K.
Sajous Wesner
Sony Corporation
LandOfFree
Signal converter and signal conversion method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal converter and signal conversion method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal converter and signal conversion method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-657460