The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2004
Filed:
Dec. 27, 2001
Toyotaro Tokimoto, Yokohama, JP;
Masatoshi Ohishi, Zushi, JP;
Avix, Inc., Yokohama, JP;
Abstract
A system has a screen module for displaying multicolor images on a screen having orderly-arrayed first, second, and third color LEDs, and a data-sending module sending control signals and image data to be displayed. The screen module has first, second, and third color gradation-control circuits for each pixel. The data-sending module comprises: a frame memory for temporarily storing image data; an image-data transfer controller for reading out image data from the memory and outputting it with a data-transfer clock; first, second, and third color pulse-train generators for generating high-speed pulse trains to be given to each gradation-control circuit; and a pulse-train outputting means for outputting the pulse trains for each color. Each pulse-train generator generates, with a constant period, pulse trains of 2 pieces or a number closely therebelow, pulse intervals varying with time according to a preset characteristic.