KR100188961B1 - Internet service apparatus and method - Google Patents

Abstract

The present invention relates to an internet service apparatus and a method thereof, and more particularly, to an asymmetric bidirectional high speed internet service apparatus and a method combining a T1 and a serial-IO (Input Output) (SIO).

For the purposes of the present invention, a first step of allocating a reception channel to T1, a second step of driving SLIP controlling SIO and T1 simultaneously, a transmission request of an upper layer composed of an application program, and waiting for a signal received from a transmission network In the third step, if there is a transmission request signal of the upper layer, the transmission request signal is converted into the SLIP format, and the fourth step of transmitting through the SIO, and when the signal received from the transmission network is input to T1, it is stored in the memory to remove the SLIP format. And a fifth step of delivering the program to a higher layer program.

According to the present invention, it is possible to easily provide a high-speed Internet access service to general subscribers by using existing telephone lines, and uses a standardized SLIP as a layer-to-layer access standard, so that there is no need to modify general Internet programs. There is an advantage to it.

Description

Internet service device and method

The present invention relates to an internet service apparatus and a method thereof, and more particularly, to an asymmetric bidirectional high speed internet service apparatus and a method combining a T1 and a serial-IO (Input Output) (SIO).

Currently, Video On Demand (VOD) service is provided using asymmetric Asynchronous Digital Subscrive Line (ADSL) technology, which enables high-speed data transmission over general telephone lines. The company provides subscribers with at least 1.5Mbps high-speed internet service.

1 is a block diagram showing a general VOD terminal device.

As shown in FIG. 1, the terminal device 100 is a personal computer (PC) or a dedicated set-top box (SetTopBox).

The central process unit (CPU) 101 controls each component, and exchanges necessary data with each component through the memory 102.

The MPEG decoder 103 analyzes video data of MPEG (Video International Standards Organization) input through the T1 105 and outputs it to an external output device 120 corresponding to a television, a monitor, or the like through the output unit 106.

The SIO unit 104 is connected to the external transmission network 110 through a connection specification such as RS232, which is an international standard that defines low-speed bidirectional communication, and transmits and receives a signal related to control.

The T1 105 is an international communication standard for transmitting signals at a high speed of 1.544 Mbps, and stores image data input from the external transmission network 110 in the memory 102 in one direction.

2 is a diagram showing the structure of a prior art protocol (communication protocol) used in the VOD terminal device 100 of FIG. 1, (a) is a structural diagram of a control signal channel, and (b) is a structural diagram of a video data channel. to be.

The control signal is transmitted through the SIO via Serial Internet Protocol (SLIP) or Point-to-Point Protocol (PPP) / IP (Internet) via SIO as shown in (a). Protocol (Internet Protocol Standard), while video data is delivered directly to the output via T1 and MPEG TS (Transport Stream) as shown in (b).

3 is a flowchart in which a control signal and an image signal are processed under the structure of FIG. 2.

3, the SLIP for initially controlling the SIO is initially driven (step 301). The VOD terminal device 100 waits for a control signal transmission request of a higher layer (application programs of FIGS. 2A and 2B) or a signal coming from the transmission network 110 (step 302).

At this time, if there is a request from the upper layer, the SLIP header is added to the original data to match the control signal to be transmitted to the SIO (step 303). In addition, the SIO converts the signal into an electric signal in accordance with the physical layer standard (eg, RS232C) and transmits it to the transmission network (step 305).

Meanwhile, the signal input from the external transmission network 110 is divided into a control signal and an image signal. The SIO or T1 notifies the CPU 101 when a signal is input from the transmission network (step 306). When the control signal is input, the SIO reads it (step 307), checks the SLIP format, removes it (308), and then transfers it to the upper program (step 309). When the video signal is input, the video signal is transmitted to the MPEG decoder 103 (step 311) to output the video signal (step 312).

In the prior art as described above, by using the signal processing with SLIP on the SIO, a two-way Internet connection service (TCP / IP) of low speed (38400 bps or less) is possible.

However, in this case, since the video data does not use the high speed (1.544 Mbps) video data channel, that is, T1 at all, there is a disadvantage in that the functions of the transmission network and the terminal device cannot be fully utilized.

It is an object of the present invention to provide an apparatus and method for providing a high speed internet service in both directions by using a SIO and a reception processing through a T1 by implementing a SLIP (PPP) for controlling them on a low speed SIO and a high speed T1. There is.

1 is a block diagram showing a general VOD terminal device.

2 is a diagram showing the structure of a protocol (communication protocol) of the prior art used in the VOD terminal device of FIG.

3 is a flowchart in which a control signal and an image signal are processed under the structure of FIG. 2.

4 is a diagram showing the structure of a protocol (communication protocol) used in a terminal device according to the present invention.

5 is a flowchart in which a control signal and an image signal are processed under the structure of FIG. 4.

In order to achieve the above object, the present invention provides a protocol of a terminal device for providing an Internet service,

A physical layer unit combining T1, which is a standard for receiving signals at high speed, and SIO for transmitting low speed bidirectional communication; A link layer unit provided with SLIP, an Internet service standard for accessing and controlling each of T1 and SIO of the physical layer unit; A transmission network layer unit including TCP and IP, which are Internet protocols for transmitting control signals of the link layer unit; And an upper layer part for driving a program by a control signal from the transmission network layer part.

In order to achieve the above another object, the present invention provides an Internet service method of a terminal device combining T1 and SIO (Serial Input Output),

A first step of allocating a reception channel to the T1; Driving a SLIP for simultaneously controlling the SIO and the T1; A third step of waiting for a signal received from a transmission request and a transmission network of an upper layer constituted by an application program; A fourth step of converting a transmission request signal into a SLIP format when the upper layer transmission request signal is present in the third step, and transmitting the same through a SIO; In the third step, if the signal received from the transmission network is input to T1, the Internet service method is characterized in that it is stored in the memory, the SLIP format is removed, and transferred to the upper layer program.

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

4 is a diagram showing the structure of a protocol (communication protocol) used in a terminal device according to the present invention.

The terminal device to which the protocol of FIG. 4 is applied is the same as the block diagram of FIG.

The signal channel of the protocol of FIG. 4 passes through a physical layer in which the SIO 401 and the T1 402 are coupled to each other through a link layer of a serial internet protocol (SLIP) or a point-to-point protocol (PPP) 403. It is delivered to the transmission network layer equipped with TCP 405 / IP 404, which is the Internet protocol standard, and the application 406, which is a higher layer. Therefore, the transmission implements an asymmetric service that uses the SIO 401 and the reception processes through the high speed T1 402. In the Internet service, a video data channel of the prior art is used as a signal channel for the Internet service because the Internet service packet is mainly composed of text or data, not video.

5 is a flowchart in which a control signal and an image signal are processed under the structure of FIG. 4.

5 is a flowchart of allocating a SLIP channel to T1 (501), a SLIP driving process (502), a process of waiting for a signal from a higher layer or a transmission network (503), and a request of a higher layer in a SLIP format. Converting, transmitting through SIO, and transmitting to the transmission network (504, 505, 506), determining whether the signal is the input of the SIO in the transmission network (507), if not SIO input, ignore the signal and return to 503 home In step 508, if the input is T1, the data of the channel designated by T1 is read and transmitted to the memory, the SLIP format is removed, transferred to the upper layer, and the TCP / IP data is processed (509, 510, 511, 512). )

First, as shown in the flowchart of FIG. 5, a reception channel is allocated to T1 402 (step 501). Here, the T1 402 is composed of 24 channels of 64 Kbps. The random number is allocated to the channel for reception, and the reception speed can be adjusted according to the user's convenience.

Next, the SLIP or PPP for controlling the SIO 401 and T1 is simultaneously driven (step 502).

The terminal device waits for a transmission request of a higher layer or a signal input from the T1 402 (step 503). At this time, the terminal device determines whether there is a signal input from the SIO 401 (step 507) and ignores the signal if it is an SIO input. And return to step 503 (step 508).

In addition, if there is a transmission request from the upper layer 406, the CPU 101 of FIG. 1 reads the data in the memory 102, converts it into a SLIP format (step 504), and transmits the data to the transmission network through the SIO 401 (505,506). ).

On the other hand, it is determined whether there is a signal input from the SIO 401 (step 507). Therefore, the signal received by the T1 402 is stored in the memory 102 (step 509), and the CPU 101 removes the SLIP format from the stored data (step 510) and transfers the signal to the higher layer application program 406. (Step 511) Processes TCP / IP data (Step 512).

As described above, according to the present invention, it is possible to easily provide a high speed internet access service to general subscribers by using an existing telephone line, and use a standardized SLIP as an inter-layer access standard, thereby making it possible to use general internet programs. The advantage is that you can run it without modification.

Claims (5)

In the protocol of the terminal device providing the Internet service, A physical layer unit combining T1, which is a standard for receiving signals at high speed, and SIO for transmitting low speed bidirectional communication; A link layer unit provided with SLIP, an Internet service standard for accessing and controlling each of T1 and SIO of the physical layer unit; A transmission network layer unit including TCP and IP, which are Internet protocols for transmitting control signals of the link layer unit; And an upper layer part for driving a program by a control signal from the transmission network layer part. The Internet service apparatus of claim 1, wherein the link layer unit uses PPP, which is an Internet service standard, instead of SLIP. In the internet service method of a terminal device combining T1 and SIO (Serial Input Output), A first step of allocating a reception channel to the T1; Driving a SLIP for simultaneously controlling the SIO and the T1; A third step of waiting for a signal received from a transmission request and a transmission network of an upper layer constituted by an application program; A fourth step of converting a transmission request signal into a SLIP format when the upper layer transmission request signal is present in the third step, and transmitting the same through a SIO; And a fifth step of transmitting the signal received from the transmission network to the T1 in the third step, storing it in a memory, removing the SLIP format, and transmitting the program to a higher layer program. The method of claim 3, further comprising ignoring the signal and returning to the third step when the signal received from the transmission network is input to the SIO in the third step. The Internet service method of claim 3, wherein the second step adjusts a reception speed by allocating an arbitrary number to a reception channel in T1 including 24 channels of 64 Kbps.