Video display controlling device for making image data transform

Details Video display controlling device for making image data transform Video display controlling device for making image data transform

1996-09-27

1998-10-27

Hsia, Sherrie

Television

Basic receiver with additional function

Multimode

348558, 348581, H04N 546

Patent

active

058284184

ABSTRACT:
Image transformation is performed via a video display controlling device. Image data is transformed from an image storage memory having a matrix size of (N+a).times.(M+b) onto a display screen sized to display an image according to N.times.M size matrix. The video display controlling device operates according to any one (or a combination of) several image transformation modes, including a normal mode, an expansion mode, a compression mode, and a moving image mode. These transformations are accomplished by first setting vertical and horizontal addresses of a reference pixel among pixel data stored in the storage memory, and setting an image mode for transforming an original image in a predetermine pattern. Addresses are then generated, in accordance with the set reference pixel and the set image mode, for selecting an N.times.M set of pixel data from among the (N+a).times.(M+b) pixel data in the storage memory.

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