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DRIVE METHOD AND SYSTEM FOR LED DISPLAY PANEL

  • US 20160118026A1
  • Filed: 03/27/2014
  • Published: 04/28/2016
  • Est. Priority Date: 04/01/2013
  • Status: Active Grant
First Claim
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1. A drive method for a LED display panel, wherein the method comprises:

  • (a). Converting a HDMI/DVI video signal into an RGB signal by using a video signal decoder, and transmitting the RGB signal in parallel with a synchronous signal and a clock signal to a FPGA controller;

    (b). Dividing the RGB signal into N independent code streams by using the FPGA controller, and after re-ranking, storing them in an external memory;

    (c). Using N parallel LED drive modules to provide a direct current for the LED display panel, and periodically switching the direct current provided by N parallel LED drive modules at least between a first current I1 and a second current I2;

    simultaneously using the N parallel LED drive modules correspondingly to receive the re-ranked N independent code streams, and adjusting the duty cycle of the direct current provided by the N parallel LED drive modules according to the re-ranked N independent code streams to keep the average current provided by the N parallel LED drive modules at a given current value IDC.

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