Patent ID: 6433761
Filing Date: 2002-08-13
Classification: G09G

Abstract:
An advertising column display device comprising:a rotatable carrier comprising a bar member and a plurality of light sources arranged on the bar member; a drive adapted to rotate the carrier, such that the plurality of light sources repeatedly passes over a surface region, thereby defining a virtual matrix; a memory storing display information; a control device controlling the drive and actuating of the plurality of light sources in relation to the display information; wherein the plurality of light sources comprises a first arrangement of light sources and a second arrangement of light sources, wherein the first and second arrangements of light sources define a plurality of display rows within the virtual matrix; and, wherein the control device selectively actuates within a single display row a first light source having a first color from the first arrangement of light sources, and a second light source having a second color, different from the first color, from the second arrangement of light sources at a common point within the virtual matrix to effect chromatic mixing of the first and second colors.