The invention resides in a pre-fabricated OEM replacement vehicle headrest with a built-in active matrix TFT LCD monitor. The data input cable is run through the seat, through a hollow headrest support tube and into the monitor. The headrest device eliminates the need to modify the original equipment...http://www.google.com/patents/US6669285?utm_source=gb-gplus-sharePatent US6669285 - Headrest mounted video display
