A widescreen enhanced definition television system compatible with an existing television standard (e.g., NTSC) has provisions for utilizing a conventional television camera. The conventional camera is modified by replacing the conventional lens with an anamorphic lens or by modifying the scanning control...http://www.google.com/patents/US4897722?utm_source=gb-gplus-sharePatent US4897722 - Widescreen television transmission system utilizing conventional equipment including a camera and VCR
