Image magnifying circuit

Details Image magnifying circuit Image magnifying circuit

2005-11-29

2005-11-29

Miller, John (Department: 2614)

Television

Format conversion

C348S445000

Reexamination Certificate

active

06970204

ABSTRACT:
An image magnifying circuit is made up of a frame memory12for storing input image data, a coefficient memory18in which filter coefficients corresponding to a plurality of magnification ratios are stored, a non-linear magnification controller20for outputting an enable signal for reading the corresponding image data from the frame memory12and a coefficient selecting address AD3for reading the corresponding filter coefficient from the coefficient memory18, on the basis of an area width w predetermined to divide a display screen into n parts and a predetermined magnification for the n parts, and a filter14for filtering the image data from the frame memory12on the basis of the filter coefficients from the coefficient memory18to output the image data on the image which is non-linearly magnified in a horizontal direction. These filter coefficients correspond to the magnification ratio which are set for the n parts of the display screen.

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