Patent ID: 9726698
Date: 2017-08-08
CPC Classifications: G01R,H05B,Y02B

Claim:
1. A circuit for controlling operation of a display including an LED panel and a drive transistor that is configured to provide a supply voltage for the LED panel, comprising: a detection circuit coupled to receive the supply voltage and configured to sense a first slope change in said supply voltage and set a first logic signal in an active logic state starting with and lasting for a duration of said first slope change and configured to sense a second slope change in said supply voltage and set a second logic signal in an active logic state starting with and lasting for a duration of said second slope change; and an output circuit configured to generate an output signal, in response to the active logic state of either the first logic signal or the second logic signal, that is indicative of said detection circuit sensing either the first or second slope change in said supply voltage.