Television – Camera – system and detail – Combined image signal generator and general image signal...
Patent
1994-12-27
1996-01-02
Kostak, Victor R.
Television
Camera, system and detail
Combined image signal generator and general image signal...
348561, H04N 904, H04N 514
Patent
active
054813042
ABSTRACT:
A digital zooming system comprises a recording medium for saving a digital video signal forming a predetermined color array; a sum/difference signal separator for receiving the signal from the recording medium and then obtaining a sum value and difference value with respect to two neighboring pixels among the pixels of the predetermined color array; a correlation calculating circuit comprising a sum-value interpolation calculator for performing horizontal and vertical interpolations with respect to the sum-value according to a zooming ratio and a difference-value interpolation calculator for calculating the horizontal and vertical interpolations; a sum/difference signal mixer for receiving the interpolated sum value and difference value and producing the original digital video signal; a digital-to-analog converter for converting the digital video signal from the mixer into analog form; an address generator circuit for generating an address signal for reading or writing the data recorded on the recording medium; a coefficient generator for inputting coefficients conforming to the zooming ratio to the sum-value and difference-value interpolation calculators; and a control-signal generator for generating control signals for controlling the system. Therefore, the system can be applied for a variety of magnifying factors and a high quality digital picture zoom is accomplished.
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Paik Joon-Ki
Park Sung-wook
Kostak Victor R.
Miller John W.
Samsung Electronics Co,. Ltd.
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