creator Camras, Marvin An offset carrier longitudinal scan recording and reproducing system for television signals wherein an amplitude modulated video signal is derived from a television receiver and converted to an offset carrier with a full upper sideband and an attenuated vestigial lower sideband. A direct or offset carrier audio signal may be recorded on the same channel with the offset carrier video signal. During monitoring and playback, the offset carrier is heterodyned to a television broadcast frequency or intermediate frequency and coupled into the television receiver. The same receiver may simultaneously supply video I.F. and audio F.M. signals for recording, and monitor offset carrier audio and video signals supplied to the recording head to facilitate recording adjustments. Submitted by Aric Ahrens (ahrens@iit.edu) on 2011-11-09T17:56:36Z No. of bitstreams: 1 3806638.pdf: 406622 bytes, checksum: a7cc6db3dd30490c5a39dfd1876f12f8 (MD5) Made available in DSpace on 2011-11-09T17:56:36Z (GMT). No. of bitstreams: 1 3806638.pdf: 406622 bytes, checksum: a7cc6db3dd30490c5a39dfd1876f12f8 (MD5) Previous issue date: 1974-04-23 IIT Research Institute 2009-05-04 1974-04-23 3,806,638 http://hdl.handle.net/10560/2308 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access