True zoom of a displayed image

Details True zoom of a displayed image True zoom of a displayed image

1982-04-12

1985-07-30

Thomas, James D.

Boots, shoes, and leggings

364300, 340731, G06F 314, G09G 116

Patent

active

045326053

ABSTRACT:
The present invention relates to a capability present within a graphics display terminal wherein a zoom operation may be accomplished, the width of each of the lines of the zoomed image being maintained at a one pixel width regardless of the degree or amount of magnification of the zoomed image. This is accomplished by utilizing the firmware stored in the processor to perform the magnification of the image therein, prior to the storage of the appropriate binary data in the video display memory, the binary data being the pixel representation of the displayed image. Since the magnification of the image takes place prior to storage of the binary data in the video display memory, the graphics display terminal of the present invention can use this binary data to display an image, a zoomed image, the width of each line being equal to, approximately, a one pixel width. Therefore, despite the degree of magnification of the zoomed image, a very discernable, clear image will be displayed on the CRT.

REFERENCES:
patent: Re31200 (1983-04-01), Sukonick et al.
patent: 3976982 (1976-08-01), Eiselen
patent: 4107662 (1978-08-01), Endo et al.
patent: 4124871 (1978-11-01), Morrin
patent: 4197590 (1980-04-01), Sukonick et al.
patent: 4311998 (1982-01-01), Matherat
patent: 4321597 (1982-03-01), Martin
patent: 4356482 (1982-10-01), Oguchi
patent: 4366475 (1982-12-01), Kishi et al.

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