Receiver apparatus and method for providing conditional access t

Details Receiver apparatus and method for providing conditional access t Receiver apparatus and method for providing conditional access t

1998-11-25

2000-08-15

Faile, Andrew I.

Television

Special applications

Manufacturing

348 9, 348 10, 455 62, 455 63, H04N 716

Patent

active

061044237

ABSTRACT:
A television receiver is described for receiving and displaying to a viewer a program content rated television program transmission which includes a data signal. The receiver includes a circuit for separating the data signal from the television program signal. The rating derivation circuit derives the program rating from the data signal. A selection circuit is used to store program rating viewing authorizations for viewers. Means are provided to compare the derived program rating with the stored viewing authorization and to generate a blanking control signal. A monitoring circuit monitors the integrity of at least a portion of the data signal, calculates an error rate for the data signal and generates a rating error default control signal when the error exceeds a predetermined threshold. A no code detection circuit generates a no code default control signal when the data signal is not received within a predetermined period of time. A blanking circuit is responsive to the blanking control signal, the rating error default control signal, and the no code default control signal to blank a program in response to any of those signals.

REFERENCES:
patent: 4605964 (1986-08-01), Chard
patent: 5751335 (1998-05-01), Shintani
patent: 5874992 (1999-02-01), Caporizzo

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