Emergency civil defense alarm and communications systems
Method for expanding interactive CATV displayable choices for a given channel capacity
Method for providing targeted profile interactive CATV displays
Television program transmission verification method and apparatus
Method and apparatus for tv broadcasting
Television program transmission verification method and apparatus Patent #: 4967273
ApplicationNo. 772927 filed on 10/08/1991
US Classes:348/385.1, Plural video programs in single channel348/473, Including additional information725/35, Based on demographics or geographical area725/138, Headend725/139Receiver (e.g., set-top box)
ExaminersPrimary: Peng, John K.
Attorney, Agent or Firm
International ClassesH04N 007/04
AbstractA plurality of television signals are transmitted and selectively received on a single television channel allocation. Headend apparatus compresses a set of television signals, such as a main program signal and a plurality of different demographically targeted commercials. The plurality of compressed television signals are combined into a combined signal for transmission on a single television channel allocation. A receiver receiving the combined signal identifies characteristics of a television viewer, and selects a particular one of the compressed television signals from the received combined signal depending on the viewer characteristics. The retrieved signal is decompressed for use by a video appliance.