Television access control system

Details Television access control system Television access control system

1998-02-10

2000-02-01

Flynn, Nathan

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

348 55, H04N 710

Patent

active

060208821

ABSTRACT:
An arrangement for the control of viewing of a television program in which a classification code is transmitted with the video signal, for example, in an extension packet of a teletext signal, includes a decoder (23) which detects the received codes and passes them to a microcontroller (27). An authorized user is able to enter codes of permitted program classifications by means of a remote control unit (28). Codes representing these permitted classifications are stored in a non-volatile memory (29). The received and permitted codes are compared in the microcontroller (27) which inhibits the video (25) and/or audio (32) circuits if the received codes are not permitted codes. The non-volatile memory (29) is arranged to store a plurality of different program classifications, each of which is valid for different periods of the day.

REFERENCES:
patent: 4930160 (1990-05-01), Vogel
patent: 5382983 (1995-01-01), Kwoh et al.
patent: 5550575 (1996-08-01), West et al.
patent: 5828402 (1998-10-01), Collings

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