KR100200018B1 - The interactive tv terminal - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-way TV terminal, and more particularly, to a two-way TV terminal using a television receiver to easily perform data communication and to display a result thereof. It is very economical, can be used as an external modem of a normal PC, and has a small power consumption effect.

Description

Two-way TV terminal

1 is a block diagram of a two-way TV terminal according to the present invention.

2 is a schematic diagram showing a menu board of an interactive TV terminal according to the present invention;

3 is a plan view showing a remote control of the interactive TV terminal according to the present invention.

* Explanation of symbols for main parts of the drawings

1: CPU 2: Overlay Graphics Controller

3: VTRTV Tuner 4: Sync Separator

5: modem 6: remote control

6: keyboard 8: RS232C

9: EPROM 10: RAM

12: SIO controller 13: memory controller

14,16: oscillator 15: interrupt controller

17: Universal I / O Port 18: R.G.B.for Overlay NTSC encoder

19: TV

The present invention relates to a two-way TV terminal, and more particularly, to a two-way TV terminal that uses a monitor as a television receiver to perform data communication simply and display the result.

Today's society is called an information society. In other words, among the information overflowing from all areas of society, the problem of acquiring desired information in a short time at a low cost or building a large amount of information and supplying it to a consumer who needs some information is facing the information society. The situation is emerging as a big problem.

In order to solve this problem, in order to perform data communication between different systems, a data communication line is used to directly connect to a data system in which a database is established through a dedicated line to retrieve data, or to use a public communication network. Data communication is performed by connecting the systems between them.

For example, in Korea, data communication services are provided using public telecommunications networks such as HITEL of Korea Telecom, CHOLLIAN of Dacom, Naunuri of Naucom, and UNITEL of Samsung Data System. It provides a communication environment for data communication and provides a connection service with the Internet (INTERNET), an international communication network.

Conventionally, in order to perform data communication with a counterpart system, it is possible to perform data communication with the other party or to perform only a data communication function through a communication program that enables data communication using a general-purpose personal computer (PC). There was a data communication terminal.

However, data communication using a PC is, first of all, an economic problem that requires the purchase of a PC for data communication because the price of the PC is very high, and data communication with the other party cannot be performed if the PC cannot be used skillfully. For computer novices who are reluctant to encounter PCs because the process of doing so is very difficult, data communication is the bread in the picture.

In addition, a data communication terminal generally reduces the function of a PC to a function only for data communication, which is also difficult for a computer novice to use.

The present invention is to solve the conventional problems as described above, it is simple and easy to connect with the communication network, can be easily installed, and a two-way TV terminal operating very economically and low power consumption using a normal television and its control The purpose is to provide a method.

The present invention provides a sync separator that receives a video signal from a video source and separates vertical and horizontal sync signals to achieve the above object, and a remote controller for generating a manipulation signal when a user operates to communicate. A modem for connecting to a keyboard, an external system, a serial controller for controlling data input / output of the data input / output means via the RS232C port, a nonvolatile memory for storing fonts and programs necessary for operation, video signal processing and program working. Volatile memory, a memory controller for controlling the operation of the above-described nonvolatile and volatile memory, and data for data communication on a television receiver, while simultaneously superimposing video signals to enable data communication while watching television. Giving the overlay graphics controller, R.G.B., which receives an output of the overlay graphic controller and displays an image signal and communication data on a television It executes with the NTSC encoder, the communication program stored in the nonvolatile memory, and the volatile memory, and enables data communication with the counterpart data system through the modem and the RS232C port according to a user's instruction by the above-mentioned operation means. Data communication processing A control device for outputting RGB signals and video signals through the RGB NTSC encoder, an interrupt controller for processing interrupts generated by the control device according to interrupt priority, and another device connected to the control device. It provides a two-way TV terminal, characterized in that composed of a plurality of input and output ports to enable.

Hereinafter, a bidirectional TV terminal according to the present invention will be described in detail through the first embodiment.

First, as shown in FIG. 1, the bidirectional TV terminal according to the present invention is configured to receive a video signal from a video source, a VTR and a TV tuner, an encoder, and a DAC 3 to separate vertical and horizontal sync signals. The separator 4, the remote controller 6 and the keyboard 7 which generate the operation signal when a user operates for data communication, the modem port 5 for connection with a remote counterpart system, RS232C port 8, which is a serial data input / output port for connection, an interrupt controller 15 for controlling input / output of the remote controller 6, keyboard 7, and modem, and an SIO remote controller for controlling short-range data input / output ( 12) EPROM 9, which is a nonvolatile memory for storing font data for displaying characters and programs necessary for operation, and RAM 10, which is a volatile memory in which image signal processing and program walking are performed. ), A memory controller 12 for controlling the operations of the EPROM 9 and the RAM 10, and a screen for data communication on a television or a monitor 19 while simultaneously processing a video signal by superimposing them. The overlay graphic controller 2 which enables data communication while watching television and the output of the overlay graphic controller 2 are input to display the image signal 11 and the communication data on the television or monitor 19. RGB The NTSC encoder 18, the communication program stored in the above-described EPROM 9, and the above-mentioned RAM 10 are executed to instruct the user by the above-described operating means, i.e., the remote control 6 or the keyboard 7. Accordingly, a CPU made of Z80, which is a control device which enables data communication with the counterpart data system through the modem 5 and the RS232C port 8, and outputs the data communication signal and the video signal through the overlay graphic controller 2 described above. 1), an interrupt controller 15 for processing interrupts generated by the CPU 1 according to interrupt priority, and a plurality of universal I / O ports 17 for connecting data with other external devices. The oscillators 14 and 16 supply clocks necessary for the operation of the CPU 1 and the RGB-to-NTSC encoder 18, that is, 14.318 [MHz] and 3.5 [MHz], respectively.

And, it will be described in detail with respect to the control method of the interactive TV terminal according to the present invention.

First, the control process of the interactive TV terminal according to the present invention shows a plurality of communication networks currently in operation for connecting the aforementioned interactive TV terminal using the television or monitor 19 as a display, as shown in FIG. In the same manner as the menu method, the user selects a communication network to be connected using the remote controller 6 or the keyboard 7 and automatically communicates with the desired communication network using a communication protocol stored in the EPROM 9 in advance. Connecting to a communication network, and performing a function of a command used in the connected communication network, as shown in FIG. 3, by operating various keys of the remote controller 6 or by operating the keyboard 7 The step of performing communication and the step of ending data communication by the operation of the end function key of the remote controller 6 or the operation of the keyboard 7.

The interactive TV terminal and its control method according to the present invention made as described above operate as follows.

First, when the interactive TV terminal is operated, the CPU 1 draws out a communication program stored in the EPROM 9 through the memory controller 13 and executes it with the RAM 10 to display the initial screen as shown in FIG. Is presented in. Accordingly, when the user selects the communication network to be connected using the remote controller 6 or the keyboard 7, the user selects the communication network to which the modem 5 is to be connected via the RS232C (8) using the PC. The instruction is transmitted to the CPU 1 via the interrupt controller 15 via the "

The CPU 1 connects to the communication network using the telephone number and communication protocol of the communication network stored in advance for connection with the communication network selected by the user.

At this time, since the interactive TV terminal according to the present invention uses a monitor as a television, the RGB-to-NTSC encoder 18 displays the screen of the overlay graphic controller 2 for data communication on the television or monitor 19. At the same time, the video signal 1 is superimposed to enable data communication while watching television. That is, when the image signal 1 is input through the video source and the VTRTV tuner 3, the sync separator 4 is separated into the horizontal sync signal H_SYNC. And the vertical sync signal V_SYNC. 2). Accordingly, the RGB-to-NTSC encoder 18 overlays and outputs the video signal 1 received through the communication service screen, the video source, and the VTRTV tuner 3.

The RGB-to-NTSC encoder 18 displays the output of the overlay graphic controller 2 and the received image signal and communication data on the television or monitor 19.

When the connection is established with the communication network to be connected, the user can simply move to the database to receive the communication service by using the remote controller 6 as shown in FIG. 3 and receive the communication service. That is, the EPROM (9) is used to pre-populate the commands commonly used in the communication service (for example, initial menu, previous menu, front page, back page, select, erase, move, shortcut 1, shortcut 2, shortcut 3). If the remote controller 6 corresponding to the key is pressed, the CPU 1 interprets the command and processes the corresponding command so that a desired service is performed by one or two key operations.

In particular, in a method for controlling a two-way TV terminal, a method of displaying a plurality of communication networks currently being operated in a menu manner in order to connect a two-way TV terminal using a television and a monitor 19 as a display to a communication network, Selecting a communication network to connect to the desired communication network automatically using the communication protocol stored in advance, and when connected to the communication network to perform data communication through the key operation to perform the function of the command used in the connected communication network And data communication is terminated by operation of the end key.

In the overlay graphic processing in which the computer communication processing screen and the television video screen are superimposed and displayed, the overlay graphic processing method by the overlay graphic controller 2 displays a screen for data communication on the television and the monitor 19 while simultaneously displaying the screen for data communication. The video signal received through the VTRTV tuner 3 is superimposed to enable data communication while watching television.

The bidirectional TV terminal and its control method according to the present invention made as described above can be easily and quickly connected to a communication network, can be simply installed, economically very inexpensive, can be used as an external modem of a general PC, and consumes power. Provides the effect of making it small.

Claims (1)

A remote controller 6 and a keyboard 7 which receive a video signal 3 from a VTRTV tuner and separate vertical and horizontal synchronization signals, and a remote controller 6 and a keyboard 7 which generate the operation signal when a user operates to communicate. Data input / output of the modem 5, which can be connected to a remote counterpart system, the serial port 8, which can be connected to a short distance counterpart system, and the data input / output means 5, 6, 7, and 8. The SIO controller 12 and the interrupt controller 15 to control, a nonvolatile memory 9 for storing fonts and programs necessary for operation, a volatile memory 10 for performing image signal processing and program walking, and the above-mentioned non- The memory controller 13, which controls the operation of the volatile and volatile memories 9 and 10, displays data for data communication on the television and the monitor 19, and simultaneously processes the video signals by superimposing the video signals. An overlay graphics controller 2 that enables data communication while requesting an input, and an RGB-to-NTSC encoder that receives the output of the overlay graphics controller 2 and displays an image signal 3 and communication data on a television. 18) and the communication program stored in the nonvolatile memory 9 and the volatile memory 10, and the modem port 5 and the RS232C port according to the user's instructions by the operation means described above. (8) a control device (1) which enables data communication with the counterpart data system and outputs a data communication signal and an image signal through the overlay graphic controller (2); and the control device (1) Interrupt controller 15 for processing interrupts according to interrupt priority, and a plurality of input / output ports that allow other devices to be connected to the control device 1 described above. 17) an interactive TV terminal, characterized in that consisting of.