Your TV's RS-232 Serial Port Can Do A Lot More Than You Probably Realized

You may recognize the RS-232 serial port on your TV, but do you know all that it can do? It's probably more than you realized ...
EDN

Using the PMBus protocol on a serial comm link

The Power Management Bus (PMBus) protocol, a simple and powerful open industry specification, is a step towards unifying communication standards for digital power-management systems and power ...