Patent ID: 8779696
Filing Date: 2014-07-15
Classification: H04N,H05B

Abstract:
1. A method of defining a functional condition in a light emitting diode (LED) driver integrated circuit (IC), the LED driver IC including a preload latch, an active functional latch, and a serial lighting interface (SLI) bus, the SLI bus including a prefix register and a data register connected in series, the LED driver IC further including a current sink MOSFET, the current sink MOSFET being connected to an LED string, the method comprising: serially loading data identifying the active functional latch into the prefix register; serially loading data defining the functional condition into the data register; and transferring the data defining the functional condition from the data register to the active functional latch by copying the data from the data register to the preload latch at a first rate and copying the data from the preload latch to the active functional latch at a second rate that is less than the first rate.