DISCRETE PATTERN, OPTICAL MEMBER USING THE SAME, LIGHT TRANSMISSION PLATE, SIDELIGHT DEVICE, TRANSMISSIVE LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD, PROGRAM AND SYSTEM FOR GENERATING THE DISCRETE PATTERN AND COMPUTER READABLE RECORDING MEDIUM WITH COMPUTER READABLE PROGRAM FOR GENERATING THE DISCRETE PATTERN RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To provide a sufficiently uniform and random discrete pattern.;SOLUTION: The pattern is formed of two-dimensionally arranged discrete dots and the dots are generated through the use of a low discrepancy sequence. It is discovered that the favorable and uniform discrete pattern is provided, when D being the square of a discrepancy satisfies fixed relation with the number N of the dots included in a section. The dots are automatically generated or erased in connection with a filling factor so that the excellent discrete pattern is provided even when the filling factor is rapidly changed. An excellent blue noise characteristic is given to the discrete pattern and also the excellent dithering pattern of a gradation picture is also given to the discrete pattern.;COPYRIGHT: (C)2003,JPO