Patent ID: 6266812
Filing Date: 2001-07-24
Classification: H04N

Abstract:
An addressable CATV end-user payment collection management system comprising:a cable TV broadcasting system, said cable TV broadcasting system comprising a plurality of demodulators, which demodulate signals from different channels, a video signal main cable for signal output, a mixer, which mixes the signals received from said demodulators into an end-user receivable video signal, and then sends the mixed video signal to the end users through said video signal main cable;a cable modem;a payment collection computer data bank for storing and processing data of the end-users, and producing a control signal to said cable modem subject to the payment data of the end-users;said cable modem being connected between said cable TV broadcasting system and said payment collection computer data bank for sending the control signal from said payment collection computer data bank to the mixer of said cable TV broadcasting system for mixing with said video signal for synchronous output; anda plurality of signal distributors respectively connected to said video signal main cable for distributing said video signal to the end-users, said signal distributors each comprising a programmable central processing unit for receiving the control signal from said payment collection computer data bank through said cable modem for closing/opening the line at each individual end-user;a voice payment urging and end-user encryption channel setting system for connecting said payment collection computer data bank to a phone line through a voice modem, for urging the end-user to use the system to encrypt the channels by means of a telephone;said signal distributors each comprising a main cable input output circuit, power and carrier signal separator circuit, a switching type voltage stabilizing power circuit, a central processing unit control circuit, and a forward control signal transmitter and receiver circuit, said main cable input output circuit being connected to said power and carrier signal separator circuit, said power and carrier signal separator circuit separating power supply from carrier signal, enabling power supply signal to be transmitted to said switching type voltage stabilizing power circuit to provide said central processing unit control circuit with the necessary working voltage, and carrier signal to be sent to said forward control signal transmitter and receiver circuit, said forward control signal transmitting and receiving circuit processing carrier signal for two-way signal transmission with said central processing unit control circuit by means of a FSK circuit thereof, said forward control signal transmitting and receiving circuit comprising a forward control signal transmitter, which sends a monitoring signal produced by said central processing unit control circuit back to said payment collection computer data bank, and a control signal receiver, which receives the control signal from said payment collection computer data bank and then sends the control signal to said central processing unit control circuit receiving the control signal from said forward control signal transmitting and receiving circuit for controlling closing/opening of RF electronic switches, so as to further control the presence of video signal at every end-user, said central processing unit control circuit outputting a control signal to said forward control signal transmitting and receiving circuit when an abnormal signal receiving condition occurs, said RF electronic switches being controlled by said central processing unit control circuit to close/open the channels at the end-users.