Using a MAX3232 Level Shifter attached to the RS232 port of the Sharp AQUOS TV, the Freescale FRDM-K64F board can be used as a mini-web server to accept HTTP request and translate them into serial commands for the TV.

It's a simple program published on mbed.org at

https://developer.mbed.org/users/davisw00/code/SharpAquosHTTPController/