Image scaling system capable of saving memory

Details Image scaling system capable of saving memory Image scaling system capable of saving memory

2011-04-05

2011-04-05

Harrison, Chante (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Graphic manipulation

C382S298000, C382S300000

Reexamination Certificate

active

07920150

ABSTRACT:
An image scaling system includes a window memory, a longitudinal scaler, a buffer and a latitudinal scaler. The window memory temporarily stores partial data of N image lines. The longitudinal scaler performs a longitudinal scaling operation on the partial data of the N image lines to thereby produce partial data of a longitudinal image line. The latitudinal scaler performs a latitudinal scaling operation on the partial data of the longitudinal image line to thereby produce scaling-part data of a latitudinal image line. The longitudinal scaler and the latitudinal scaler use a window average to perform an image shrinking operation and a bi-linear interpolation average to perform an image expanding operation.

REFERENCES:
patent: 6028589 (2000-02-01), Mehra et al.
patent: 6331902 (2001-12-01), Lin
patent: 2003/0128896 (2003-07-01), Nacman et al.
patent: 2004/0201863 (2004-10-01), Bailey et al.

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