Patents by Chong Il Lee, Sergio Lara Monteiro and collaborators

Awarded patents:

(1) " Method and means to prevent the formation of visible lines and other image artifacts on illuminated displays " patent number 9,218,759, 22 December 2015.

Patent '759 describes a method and a means to improve the quality of the image displayed on public billboards . It applies to large devices as street billboards, used to prod people to buy things that they do not want and should not even buy, to medium sized devices, as airport and train station announcing boards, and to smaller devices as computer monitors. The inventor dreams that one day, in a different society, the improved image will cause that the existing street billboards will display the murals of Diego Rivera and other 99% art works . The image improvement stems from small changes of the position of the pixels, which causes a break on the spatial frequency of the pixels. The modified pixel distribution is therefore devoid of spacial frequency arrangements, and then not subject to the problems associated with sampling frequencies. Though this image application of sampling is well known to mathematicians, engineers and other workers in the field of image acquisition and display, it is less known than its counterpart in sound, where it is more widely known that the 44.1 kHz frequency chosen for CD recording was selected for it being higher than twice the maximum frequency that humans can hear (20 kHz), which puts it above the Nyquist frequency and free from aliasing. It is worth to remind the reader that the problem solved by the invention is the same described by Nyquist, Nyquist frequency, aliasing, etc., so much discussed in digital recording.

(2) " Method and means to prevent dark lines within the image space of lighted billboards and other public display devices " patent number 9,601,061, 21 March 2017.

This patent '061 describes a method and a means to improve the quality of the image displayed on public billboards . It shares with patent '759 the objectives of "proding people to buy things that they do not want and should not even buy" also diverting their minds from issues that are important to them, towards futile, shallow objectives. As for display of art, this patent '061 has even more impact on the suitability of the display of an art work than its sister patent '759, because it is a method to get rid of the lines in between the panels that make the larger display surface, which is deleterious for both shallow advertisements and good art work display as well. It applies only to large displays that are a composite of smaller panels joined together to make an image larger than each panel, which only display part of the total image. This is the case for the huge street advertising boards and sport stadiums, with many dozen panels, each displaying a small part of the total image, where the pixels are LEDs, to smaller displays with only 3 horizontal by 3 vertical panels at the foyer of conference halls and other public meeting places. The image improvement stems from filling in the currently dark space caused by lack of image pixels at the supporting structure that joins the modules together. Existing displays cannot support image pixels at the supporting structure because the supporting structure has its own requirements of structural strength. Patent '061 discloses a method of hair-like holes in the supporting structure from which RGB light propagates to the front of the billboard. The holes are small enough to be compatible with the structural integrity of the supporting structure, while allowing for image pixels to fill in the supporting structure surface.

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