Patent ID: 7508454
Filing Date: 2009-03-24
Classification: H04N

Abstract:
1. A television receiving system comprising: a plurality of television receiver mechanisms for receiving a plurality of separate television program signals for producing a plurality of input signal streams; a multiplexer mechanism coupled to the television receiver mechanisms for uniquely marking each input signal stream and multiplexing the marked input signal streams into a single combined signal stream; a security mechanism receiving the combined signal stream and responsive to the access control of the single combined signal stream and producing an access-allowed combined signal stream; a demultiplexer mechanism coupled to the security mechanism for receiving the access-allowed combined signal stream and detecting the unique marking specific to each input signal stream, demultiplexing the access-allowed single combined signal stream into each access allowed input signal stream according to their respective marking, restoring the initial marking into each access-allowed input signal stream, and producing separate television program signals corresponding to the each input signal streams received by the receiver mechanisms; and circuitry responsive to at least one of the access-allowed input signal stream for supplying image signals to a television display mechanism for enabling same to produce television images.