Television schedule information transmission and utilization systems (50A-50D) transmit TV schedule data and associated network control messages provided by computer (54) as packets via the Video Blanking Interval (VBI) lines in the TV signal from various television program providers (51). This data...http://www.google.com/patents/US6216265?utm_source=gb-gplus-sharePatent US6216265 - System and method for transmitting and utilizing electronic program guide information
