Method and apparatus for displaying a plurality of images on one

Details Method and apparatus for displaying a plurality of images on one Method and apparatus for displaying a plurality of images on one

1993-05-20

1997-10-14

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345118, 73623, 73626, 12866101, G09G 500

Patent

active

056777078

ABSTRACT:
An image display apparatus, which is used to display a plurality of images on one display image by carrying out a filtering operation, comprises a memory unit, a filter unit, a write control unit, a delay unit, and a switching unit. The write control unit controls the writing of the display data at a region having a specific address length between adjacent display-regions, when storing the display data into the memory unit. The filter unit applies a filtering operation to the display data read out from the memory unit along the display scanning direction, and the delay unit gives a different delay value to the display data output from the filter unit. The switching unit switches the display data having a different delay value output from the delay unit at a boundary line of the adjacent display-regions. Therefore, the length between the adjacent display-regions can be shortened, and an image having a preferable length between the adjacent display-regions without an intervention can be displayed.

REFERENCES:
patent: 4398540 (1983-08-01), Takemura et al.
patent: 4471785 (1984-09-01), Wilson et al.
patent: 4816812 (1989-03-01), Iida
Sato, "Picture Signal Processor Using Acyclic Digital Filter," Patent Abstracts of Japan, vol. 13, No. 195 (E-754), May 10, 1989 & JP-A-01 016116 (Nikon), Jan. 19, 1989.

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