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.es/patents/US5619274?utm_source=gb-gplus-sharePatente US5619274 - Television schedule information transmission and utilization system and process
Television schedule information transmission and utilization system and process
