Password restriction of cable television channel using key input

Details Password restriction of cable television channel using key input Password restriction of cable television channel using key input

1995-03-15

1998-06-09

Peng, John K.

Television

Special applications

Manufacturing

348 10, 348553, 455 62, H04N 544

Patent

active

057642818

ABSTRACT:
A password (PW) restriction apparatus for cable television (CT) channels having a downward receiving signal controller (DRSC) for receiving a downward receiving signal output from a cable television transmitting/receiving portion (CTTRP) and transmitting digital signals to control the generation of video and audio (V and A) signals; a television/audio decoder (TAD) for decoding the digital signals to generate V and A; a central processing unit (CPU) for processing (PW) for enabling a user to at least select one of changing a password channel (PWC) and processing a new PW from the CTTRP; an upward transmitting signal controller for multiplexing a user-controlled signal and maintenance signal output from the CPU and transmitting the multiplexed signals to the CTTRP; an on-screen display controller for generating a user-controlled screen (UCS) on a user television screen and transmitting the generated USC to the TAD; a user-operated key pad for generating password channel selection (PWCS) and password channel restriction (PWCR) data as switching signal inputs; a key pad controller for inputting the switching signal inputs to the CPU and processing a scanning signal from the CPU; a remote controller receiver for receiving an infrared signal (IS) from a remote controller and transmitting the IS to the CPU, and the IS including signals for generating PCS and PCR data a memory storing system parameters.

REFERENCES:
patent: 5016272 (1991-05-01), Stubbs et al.
patent: 5027400 (1991-06-01), Baji et al.
patent: 5068734 (1991-11-01), Beery

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