Image display apparatus and image display method

Details Image display apparatus and image display method Image display apparatus and image display method

2005-06-21

2005-06-21

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Plural storage devices

C345S537000, C345S555000, C345S688000, C345S156000, C345S162000

Reexamination Certificate

active

06909433

ABSTRACT:
Image display apparatus and image display method which realize smooth scroll-display of image data and enlargement/reduction display, and attain cost reduction by reducing the capacity of local memory for temporarily storing image data. In the image display apparatus, compressed image data is stored in an image memory52, and partial image data of the compressed image data within a display range of monitor screen56and its peripheral compressed image data are transferred to a local image memory59. in the local image memory59, the partial image data and the peripheral image data are expanded and stored. Further, compressed image data further surrounding these data is stored. Then, compressed image data in a designated scroll direction is expanded by an image expansion unit60.

REFERENCES:
patent: 5526137 (1996-06-01), Nameki
patent: 6094510 (2000-07-01), Yaguchi et al.
patent: 6281983 (2001-08-01), Takahashi et al.

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