A display control board, its driving method and display
A control panel, display technology, applied in static indicators, instruments, sensors, etc., can solve the problem of headphone interface noise and other problems, and achieve the effect of improving quality
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[0045] At present, the control chip (Scalar IC) on the motherboard of the display, regardless of whether the headphones are plugged in or not, the GPIO port always outputs signals to the headphones, which leads to noise problems in the headphones at the moment of switching on and off and when the display is working normally. . Specific as figure 1 In the design of the earphone circuit shown, it can be seen from the circuit diagram that the signal output pin EAR_OUT_L(R) of the Scalar IC will always output sound to the earphone circuit, that is, the sound output of the earphone is only realized by the hardware part. The sound signal is always transmitted in the earphone circuit, which will cause noise problems at the moment when the earphone is connected and when the display is working normally.
[0046] Aiming at the problem of noise in the earphone interface in the prior art, embodiments of the present invention provide a display control board, a driving method thereof, and ...
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