| 摘要 |
<p>A dot matrix LED display has an array of LED pixels and a control system configured to set the luminance of each pixel that is illuminated at a first luminance, L, if the percentage x of illuminated pixels is less than or equal to a threshold percentage n. L is set inversely with an ambient light level. The control system is configured to illuminate each pixel at a reduced luminance L, where L = (n/x)L, if n > x. A software low-pass filter is used to smooth the value of L.</p> |
