Patent ID: 11862095
Assignee: EMAGIN CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An organic light-emitting diode (OLED) display system having visual performance pixel compensation or loss of brightness, the OLED display system comprising:
(a) a plurality of OLED-based display pixels, each display pixel comprising pixel drive circuitry;
(b) a sensing system comprising a plurality of sensors;
(c) a processor comprising:
(i) a lock-in amplifier (LIA);
(ii) a low pass filter (LPF); and
(iii) analog to digital (ADC) circuitry operatively connected to each of the sensors, the ADC circuitry providing a sensor signal for each of the sensors;
the processor adapted to:
(iv) apply a drive signal having a periodic signal embedded therein to at least one OLED pixel in the display;
(v) receive the sensor signal from the ADC circuitry for each sensor;
(vi) provide a primary frequency component from the sensor signals using the LIA based on the periodic signal;
(vi) provide secondary frequency components from the sensor signals using the LPF;
(vii) convert the secondary frequency components to a digital signal using the ADC;
(viii) provide the digital signal to the processor as a sensing signal; and
(ix) determine compensation for the drive signal.