Patent ID: 9536460
Date: 2017-01-03
CPC Classifications: G09G

Claim:
1. A method of measuring a signal offset of signals related to a display system having a pixel circuit having a light emitting device, the signal offset due to propagation delay of signals on a signal line connected to the pixel circuit, the signal line connected to the pixel circuit at one of a first location along the signal line and a second location along the signal line, the method comprising: generating from the first location a first signal over the signal line; measuring at the second location the first signal upon expiry a first time duration sufficient to avoid settling effects on the signal line generating a first signal measurement; generating from the first location a second signal over the signal line; measuring at the second location the second signal upon expiry of a second time duration insufficient to avoid settling effects on the signal line generating a second signal measurement; and comparing the first signal measurement with the second signal measurement to extract the signal offset due to propagation delay on the signal line.