Title :
Estimating frame algorithm and system architecture for LED screen
Author :
Lee, In-Sung ; Lee, Seunghwa ; Shin, Dong-Ryeol
Author_Institution :
Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea
Abstract :
In this paper, we propose a frame prediction algorithm to eliminate the flicks and blank under the environment of the refresh rate of 240 Hz in the full color LED Screen. It is well known that the LED Display System has both Blank and Ghost Noise problems. Blank symptoms can be improved by displaying the Video Frame repeatedly in the field of LED display. However it turns out to be inefficient and cannot resolve the Ghost Noise phenomenon for LEDs that have more than 250 ¿ in their response time as well. For this reason, we have focused on how to configure the optimized data video, Flicks and Ghost noise problem in the LED Screen. We develop the LED Screen Picture Control System operating on the LED chip based on the characteristics of hardware devices and then implement a Convert Board to use the VDU (Video Distribute unit) device of the conventional LED Screen designed for a DVI Interface. Finally we compare the existing system with improved one to show the performance excellence.
Keywords :
LED displays; interference suppression; parameter estimation; screens (display); DVI interface; LED display system; LED screen picture control system; blank display; flicker noise; frame prediction algorithm; frequency 240 Hz; ghost noise; system architecture; video distribute unit; 1f noise; Colored noise; Control systems; Delay; Displays; Frequency; Light emitting diodes; Page description languages; Performance evaluation; Working environment noise; 240hz; Flicker; Ghost noise; Led display; Led response time; Led system;
Conference_Titel :
Advanced Communication Technology (ICACT), 2010 The 12th International Conference on
Conference_Location :
Phoenix Park
Print_ISBN :
978-1-4244-5427-3