KR19980039593A - CATV 2-Way Converter - Google Patents

Abstract

The present invention constructs a crime prevention, control system and environmental monitoring system by dataizing various physical signals such as electric signals, video signals, and audio signals using the principle of cable TV interactive converter, and between a personal computer and a broadcasting station as a bidirectional converter. By connecting, he invented a learning and education system.

The crime prevention and control system has established a system that prevents theft and fire of each home in advance by connecting a fire, smoke sensor, and door detection order with a crime prevention and disaster prevention terminal.

The environmental monitoring system optimizes energy loss by connecting output contact points such as temperature / humidity sensors, air conditioners, air conditioners, and humidifiers with environmental monitoring terminals, and maximizes efficiency in work by maintaining a pleasant environment in homes and offices.

The learning and education system enables access to the subscriber's personal computer and the broadcasting station's main computer, and the broadcasting station transmits regular programs for each subject by organizing time and sets a specific time for interactive education between practitioners and subscribers of the learning and education management system. We have developed a system that can be implemented.

The invention of the learning and education system completely escapes the monotonous value-added services and functions of the existing converter and is meaningful to improve the intellectual procedure of the rapidly increasing cable TV subscribers.

Description

CATV (CABLE TV) Bidirectional Converter (CONVERTOR)

1 is an overall system diagram of the present invention

2 is a block diagram of a subscriber converter system of the present invention.

3 is a schematic diagram of the main computer system of the present invention.

4 is a flowchart of a subscriber converter program of the present invention.

5 is a main computer program flow diagram of the present invention.

Originally, cable TVs have antennas installed in good reception conditions in order to solve the reception conditions of mountain wallpaper and egg viewing areas, and then retransmit the programs of broadcasting stations to each home using coaxial cable or make their own programs. Has developed into a system that can do this.

Entering the 1990s, with the remarkable development of the multimedia and telecommunications industry, the demands of cable TV subscribers have diversified, enabling two-way communication to send and receive video signals, voice signals, various electrical signals, data from personal terminals and computers. Came to demand.

The present invention has been devised to meet these expectations, security, prevention system for the prevention of theft and fire by using two-way communication with the subscriber, environmental control system using a temperature and humidity sensor for a pleasant environment, communication port of a computer Invented an interactive learning and education system for learning and teaching using.

The purpose of the present invention is to improve the intellectual level by education by providing beneficial programs for cable TV subscribers, promoting the safety of the home, maintaining a pleasant home environment, and installing and operating interactive learning and education programs. have.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall system configuration of the present invention.

In recent years, the cable TV facility has become a multi-functional structure has a configuration of FIG.

First, in order to perform satellite broadcasting, radio waves (12 GHz) must be received from the satellite, converted to a frequency suitable for cable TV, and retransmitted. Therefore, a satellite wave retransmission apparatus (1) is required. In order to retransmit after controlling the voice carrier, the terrestrial retransmission apparatus 2 is required.

The self-broadcasting equipment (3) is equipment for converting various produced programs, programs reproduced by the VTR, and programs transmitted on the relay line into frequencies of the VHF band and transmitting them to the cable TV transmission line.

Emergency power supply (UPS) (4) Equipment is a power supply that automatically switches over when power supply is cut off due to power outage or natural disaster.

The synthesis controller 5 is a device that binds modulated signals of the satellite wave retransmission apparatus 1, the terrestrial retransmission apparatus 2, and the self-confidence broadcasting apparatus 3 into one signal, and is connected to the subscriber's converter 6 through a cable. do.

Subscriber converter (6) is installed in each home and connected to security, control terminal system (7), environmental monitoring system (8) through multiple asynchronous communication ports built in subscriber converter (6). The system is equipped with documents (7) -1 such as fire order, smoke order and door detection order to prevent theft and disaster of each household.

The environmental monitoring terminal system (8) has a built-in control port for air conditioners and heaters, and is connected to a temperature sensor (8) -1 and a humidity sensor (8) -1 to automatically control the air conditioner and the air. The environment can be maintained and energy saving can be achieved. In addition, the subscriber converter 6 can watch the multi-channel TV 9 and the audio 10 which are existing functions, and the personal computer 11 by using the multiple asynchronous communication ports and the modem communication port built in the subscriber converter 6. Two-way communication between local and regional broadcasting stations was made possible, and the world's first interactive learning education through subscriber converter 6 was developed.

In addition, it was possible to develop and install various terminal systems 12 to operate.

In the synthesis controller 5, a filter capable of separating the communication frequency band is provided to enable connection with the FSK modem 13, which is a frequency modulation modem, and the FSK modem 13 is connected with the main computer 14.

The main computer 14 enables two-way communication with the subscriber converter 6 in each home through modem communication, and grasps the state of various terminal systems 7 to 12 and informs the main computer 14 of the state. In addition, if the subscriber wants computer learning and education (11), the subscriber unique number is entered.

After confirming the subscriber's unique number, the host computer 14 permits access to the learning and education system 19 and conducts a conversation with the practitioners of the learning and education system 19.

The connection between the main computer 14 and the various management systems 15 to 19 consists of a local area network, LAN (LOCAL AREA NETWORK), which is designed to transmit at 6 Mpps per second.

The crime prevention and control management system 15 receives a unique number of the subscriber who is installed the crime prevention and control terminal 7 from the main computer 14, and retrieves it from time to time, and generates an alarm in the case of theft and fire.

The environmental monitoring management system 16 searches for whether the air conditioner and the heater are operating normally according to the temperature and humidity values set in the environmental monitoring terminal 8 and generates an alarm in case of abnormal operation and informs the subscriber.

The subscriber management system 17 receives a unique number of all subscribers registered in the host computer 14 and performs tasks such as address management, viewing fee payment status, and paid channel management.

The charging service management system 18 receives the unique number of the subscriber from the host computer 14 and transmits the audience rating survey and the broadcast guide program.

In the learning and education management system (19), only registered subscribers transfer regular programs for each subject, and set a certain time per day to conduct interactive learning between subscribers and learning education practitioners for each subject.

The learning and education management system 19 of the present invention is the world's first operating system that breaks away from the existing converter-specific function and will be an opportunity to announce the opening of a new era of cable TV, which was limited to multi-channel broadcasting, It will be an opportunity to raise the intellectual level of the people through cable TV.

2 is a block diagram of a subscriber converter system of the present invention.

The central computing unit 28 has a built-in basic input and output control port, and consists of a high-speed, high-speed data link control (HDLC) communication port and an asynchronous multi-communication (232 communication) port. There is also a control port for control.

The central computing unit 28 manages the control of the peripheral circuits and operates with the main computer 14 and the crime prevention, control terminal 7, environmental monitoring terminal 8, computer learning, education system 11, and other systems 12. Perform modem communication and asynchronous multiple communication.

The audio multiple input unit 20 extracts an audio signal from the image input unit 22 to determine whether the audio reception state is audio multiplex, and inputs the audio signal to the central computing unit 28.

The central computing unit 28 determines what state the data input from the voice multiplex input unit 20 is, and the character generator 24 recognizes the corresponding character and outputs the corresponding character to the monitor output unit 29.

The stereo input unit 21 also determines whether the audio reception state is mono or stereo and recognizes the corresponding character in the character generator 24 and outputs the corresponding character to the monitor output unit 29.

The audio data received by the voice multiple input unit 20 and the stereo input unit 21 is output to the TV through the audio output unit 30.

The image input unit 22 extracts the video signal and inputs it to the central computing unit 28, and inputs the signal generated by the scramble control unit 23 to the central computing unit 28 to prevent city hearing and manage the channel.

The central computing unit 28 inputs the video signal extracted by the image input unit 22, the signal generated by the scramble control unit 23, and the characters recognized by the character generator 24 to the image output unit 31, and inputs the image. The output unit 31 outputs to the TV video terminal.

The asynchronous communication control unit 25 checks whether there is data received from the crime prevention, control terminal 7, environmental monitoring terminal 8, computer learning, education system 11, and other system 12, the central computing unit 28 To the memory area.

The modem communication control unit 26 transmits the data stored in the memory area of the central processing unit 28 to the FSK modem 13, which is a frequency modulation modem, via the communication communication band filter of the synthesis controller 5 via the modem communication input unit 33. The data passed through the FSK modem 13 is input to the main computer 14.

The main computer 14 analyzes the received data and transmits the measures to the central computing unit 18 of the converter system.

The power control unit 27 is a circuit added to supply power required for the converter system.

3 is a block diagram of a main computer system according to the present invention.

The central computing unit (39) manages transmission and reception with subscriber converters, and the security, control management system (15), environmental monitoring management system (16), and subscribers through a LAN (LOCAL AREA NETWORK) input / output control unit (44). The management system 17, the additional service management system 18, and the learning and education management system 19 are managed.

The reception data control unit 34 stores the data received by the subscriber converter 6 in the transmission / reception data memory area 41 and, upon request from each management system 15 to 19, LAN (LOCAL AREA NETWORK). It transfers to the said management systems 15-19 through the input / output control part 44. FIG.

The transmission data control unit 35 transmits / receives data memory through the LAN (LOCAL AREA NETWORK) input / output control unit 44 when a request for transmission from each management system 15 to 19 to the subscriber converter 6 is requested. After storing the data in the area 41 and confirming the corresponding subscriber from the subscriber management control unit 42, the ID management control unit 36 extracts the subscriber's unique number and then transmits the data control unit by time division of the multi-communication control unit 37. 35 is sent to subscriber converter 6.

The scramble control unit 43 is designed to manage the city office and the pay channel of the subscriber and is controlled by HDLC (HIGH-LEVEL DATA LINK CONTROL) communication by the subscriber management system 17.

The LAN (LOCAL AREA NETWORK) input / output controller 44 transmits and receives at 6Mbps per second to enable real-time processing of service requests of many subscribers.

The power control unit 39 is a circuit added to supply power required for the main computer system 14.

4 is a flowchart of a subscriber converter program of the present invention.

When the program starts, the input and output ports of the central processing unit 28 are initially set by software, and are initially set by the HDLC (HIGH-LEVEL DATA LINK CONTROL) communication port and the asynchronous communication port. If the system has been initialized (45), the user's remote control or input keys (46), (47) is checked by input, if it is entered, the corresponding character is output to the TV monitor (47) -1 and the scramble control state (47) -2. After checking the image output 53.

If there is no selection of the remote control and input keys 46 and 47, it is checked 48 whether there is received data from the host computer, and if there is no received data, the process proceeds to the next step of initialization 45.

If there is data received from the host computer, it should be determined whether it is the data transmitted from any of the following systems: security, control 49, environmental monitoring 50, subscriber management 51, learning, education 52.

If the data is transmitted from the crime prevention and disaster prevention management system, the state of the crime prevention and disaster prevention terminal may be checked (49) -1, and the communication data may be transmitted (54) to the host computer.

If the data transmitted from the environmental monitoring management system checks (50) -1 the status of the environmental monitoring terminal, and transmits the data transmitted from the additional service management system (51) -1, such as a viewership survey, and outputs the transmission data do.

If the data is transmitted from the learning and education management system, the subscriber's unique number is checked (52). If the unique number is wrong, the subscriber computer sends a message indicating that the unique number is wrong. And learning and education by connecting to the learning and education management system.

5 is a main computer program flow diagram of the present invention.

When the program starts, the software performs initialization 55 of each control port and terminal.

After initialization (55), check whether there is an input key from the host computer (56) and if there is an input key, perform the function corresponding to that key (56) -1, and if there is no input key received from the subscriber converter If there is no data received by checking 57 whether there is data, initialization 55 proceeds to the next step.

If there is data received from the subscriber converter, check the unique number of the subscriber who transmitted the data (58) and if the unique number of the subscriber is confirmed, check the status of the scramble (59). Initialization (55) Proceeds to the next step and if the scrambled is not caught, it is determined whether the management system of security, disaster prevention (60), environmental monitoring (61), subscriber management (62), learning, education (63) to be connected to It connects to each management system (60) -1, (61) -1, (62) -1, (63) -1, and if the connection is completed, transmits 64 transmission data indicating that the connection is completed to the subscriber converter.

Claims (1)

The existing cable TV system was developed to relieve astigmatism by retransmitting the TV to the urban and mountainside urban areas, but recently it has been equipped with its own broadcasting and urban interactive functions to deliver various information and local broadcasting programs. It has evolved into a medium that provides. An object of the present invention is to improve the emotional cultivation and intellectual level of the public by interactively conducting educational programs between subscribers and broadcasting stations using an interactive converter of cable TV. In addition, by developing an environmental monitoring and management system, it is possible to maintain a comfortable environment at home or company, to minimize waste of unnecessary energy, and to develop into a building and a car system using a converter later.