LED display apparatus and LED displaying method

Details LED display apparatus and LED displaying method LED display apparatus and LED displaying method

1997-05-22

1999-11-30

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

G09G 332

Patent

active

059950706

ABSTRACT:
Image display apparatus and method with an LED matrix device. Each dot of the device is composed of one red LED, one blue LED and two green LEDs. When data displayed in a 16.times.16 dot matrix is displayed by reducing the data to a 8.times.8 dot matrix, 2.times.2 dots of the 16.times.16 matrix are grouped into one unit composed of 2.times.2 dots arrayed in a matrix. Four data, i.e., data obtained by extracting upper-left data from all the units, data obtained by extracting upper-right data, data obtained by extracting lower-left data, data obtained by extracting lower-right data, respectively, from all the dot units, are successively displayed on a time division basis with deviation corresponding to a half dot relative to one another. Image of smooth contour can be generated even with a small-scale LED display apparatus having a small number of dots and low resolution.

REFERENCES:
patent: 5426446 (1995-06-01), Takei et al.
patent: 5477274 (1995-12-01), Akiyoshi et al.
patent: 5668568 (1997-09-01), Holloman
patent: 5677944 (1997-10-01), Yamamoto et al.
patent: 5724062 (1998-03-01), Hunter
patent: 5767837 (1998-06-01), Hara

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