LUMINANCE CONTROL DEVICE, INFORMATION DISPLAY DEVICE, LUMINANCE CONTROL SYSTEM, LUMINANCE CONTROL PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a luminance control technique to select a display screen luminance suitable for a user viewing display information.SOLUTION: A luminance control device 1 includes a minimum visibility information acquisition unit 11 that acquires information on a minimum character height to be displayed on a display screen, and a viewing distance estimation unit (LUT) 12 that obtains a viewing distance corresponding to the minimum character height information, and generates viewing distance information.