LED electronic sign board capable of power-saving per pixel line
US8941698B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Apr 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an LED electronic sign board capable of power-saving per pixel line, comprising: an LED display panel; a panel driver; a switching mode power supply that receives AC power, generates driving power required to operate the LED display panel and the panel driver and supplies power to the LED display panel and the panel driver; a black line extractor that analyzes an image signal which will be displayed on the LED display panel and extracts pixel lines which becomes black per LED module; and a main controller that controls the panel driver to display an image on the LED display panel according to the image signal, and that controls a switching signal for the operation of the switching mode power supply to shut off driving power that is supplied to the pixel lines extracted by the black line extractor from the switching mode power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.