LED digital perpetual calendar directly driven by control chip and implementation method thereof

LED digital perpetual calendar directly driven by control chip and implementation method thereof

CN
  • CN 102,013,206 B
  • Filed: 12/09/2010
  • Issued: 11/28/2012
  • Est. Priority Date: 12/09/2010
  • Status: Active Grant
First Claim
Patent Images

1. the digital perpetual calendar implementation method of LED that is directly driven by control chip is characterized in that, may further comprise the steps:

  • Display dot is aligned in the display matrix that is made up of n bar address wire and m bar data line;

    A pin of display dot is connected on the address wire, and another pin is connected on the data line, wherein;

    In the display matrix of the digital perpetual calendar of said LED display dot add up to 30 to 260, n and m are natural number;

    Select control chip, with drive current in the control chip greater than 0.3 * (c X1/ q X1+ c X2/ q X2+ ... + c Xm/ q Xm) * T 0/ T xThe I/O mouth as x scanning sequency control port of control chip, and directly with display matrix in x bar address wire be connected, said control chip scans demonstration by the order that is connected to the address wire on the scanning sequency control port, wherein, c X1, c X2..., c XmRepresent on the x bar address wire be connected respectively to the 1st, 2 ..., the display dot on the m bar data line the parameter of electric current-brightness transition efficient;

    q X1, q X2..., q XmRepresent on the x bar address wire be connected respectively to the 1st, 2 ..., the display dot on the m bar data line is to showing time T xUtilization factor, T xBe meant the demonstration time of distributing to display dot on the x bar address wire, T 0Be meant that display matrix shows the cycle of a frame, x is any natural number in interval [1, n].

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