A portable information display system, corresponding generally to a computer "terminal", employs a compact embodiment of a size to fit under a typical airline seat. Subassemblies including a modem, a power supply, a cathode ray tube, a protocol convertor, and a keyboard are specifically arranged inside...http://www.google.de/patents/US4496943?utm_source=gb-gplus-sharePatent US4496943 - Portable information display
