KR20000028451A - Method for supplying electronic newspaper for digital tv system - Google Patents

Abstract

PURPOSE: A method for supplying an electronic newspaper for a digital TV system is provided to reduce a transmitting amount of data, by supplying electronic newspaper information of a specific field which is required. CONSTITUTION: A transmitting side multiplexes information on many broadcasting programs, data information including information on electronic newspapers, control information detecting broadcasting programs of a specific channel, and transmits the information to a packet stream in a digital TV system. A receiving side detects the broadcasting programs of the specific channel and the information on the electronic newspapers, by the control information in the digital TV system. A method for supplying an electronic newspaper using the digital TV system comprises the steps of: applying for the information on an electronic newspaper of a specific field to the transmitting side from the receiving side; the transmitting side allocating a subscriber's ID(Identification) to the receiving side, dividing the information into each field, composing the information only which is applied for as the packet stream, and inserting/transmitting ID corresponding to the subscriber's ID on the packet stream; the receiving side detecting the information only according to the subscriber's ID, when the packet stream is transmitted. The transmitting side transmits the information by compressing the information.

Description

Electronic newspaper service method of digital TV system

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic newspaper service apparatus that serves newspaper information of each newspaper company, particularly in digital television.

In general, a digital TV system compresses and transmits digital video and audio data by using a predetermined compression algorithm, for example, a hybrid encoding algorithm, and restores the video and audio data, which are compressed and transmitted, to the original data to serve a viewer. As such, the information provided in such a digital TV system can be roughly divided into program information, data information, and control information.

In a digital TV system, program information, data information, and control information are formed into a predetermined packet stream, for example, a packet stream in units of 188 bytes, and then carried on a carrier wave.

Program information, for example, represents TV programs provided by each broadcaster for the purpose of being broadcast to subscribers, and includes video information, user information such as caption data, and audio information.

The data information includes information defined according to the service provider, for example, electronic newspaper service information, magazine service information, and the like.

The control information includes the program ID, channel ID, program name, program brief information, caption service presence, program grade, etc. necessary for demultiplexing and reconfiguring program information or data information of a selected channel from a packet stream carried on a carrier channel. It contains the same program guide information, and is generally written in PMT (Program Map Table).

Therefore, based on the control information included in the packet stream, the receiving side of the digital TV automatically tunes to the carrier including the program of the selected channel, and then demultiplexes only the program information of the channel selected from the multiplexed and transmitted packet stream. By reconstructing, the program information is provided to the viewer.

As described above, the digital TV system provides not only broadcast program information but also various additional services not provided by the existing broadcast system, an electronic newspaper service, or a magazine service, thereby expanding the information selection range of the viewer. .

The present invention relates to electronic newspaper service information, which is a newspaper service using a network, among service information provided by a digital TV system. Electronic newspaper service is composed of information in various fields such as politics, economy, society, sports, advertising, etc., and also includes text and still images for each field.

However, in the conventional case, since the characteristics of the e-newspaper service are not properly utilized, only the text and the still image corresponding thereto are used to perform the service, so that the user intensively searches only information of a specific field in the e-newspaper service. There was a problem that was very cumbersome to do.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, the digital TV system to service only the electronic newspaper information of a specific field required by the user to reduce the data transmission capacity, and also to acquire only the information of the field desired by the user Its purpose is to provide an electronic newspaper service method that enables it.

In order to achieve the above object, the present invention multiplexes a plurality of broadcast program information, data information including electronic newspaper information, and control information for detecting a broadcast program of a specific channel, and transmits them in a packet stream. An electronic newspaper service method using a digital TV system for detecting a broadcast program of the specific channel and the electronic newspaper information based on control information, the method comprising: requesting electronic receiving service information of a specific field from the receiving side to the transmitting side; ; The transmitting side assigns the subscriber ID to the receiving side, distinguishes the electronic newspaper information for each field, and configures only the newspaper information of the field applied by the receiving side as a packet stream, and the subscriber ID on the packet stream. Inserting and transmitting an ID corresponding to the receiving unit; when receiving a packet stream from the transmitting side, detecting only newspaper information of the applied field based on the assigned subscriber ID; It is characterized by.

1 is a block diagram of a digital TV system for executing the electronic newspaper service method of the present invention.

<Description of the code | symbol about the principal part of drawing>

100: transmitter 200: receiver

300: telephone line 110A, 110B, 110C: program supply unit

120: uplink station 130: program management unit

140: first modem 210: tuner and demodulator

220: MPEG decoder 230: video synthesis unit

240: text and JPEG decoder 250: first memory

260: second memory 270: video encoder

280: second modem 290: control unit

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

1 shows a digital TV system for implementing the electronic newspaper service method of the present invention.

Referring to FIG. 1, the digital TV system includes a transmitter 100, a receiver 200, and a telephone line 300. Here, the transmitter 100 includes a plurality of program supply units 110A, 110B, and 110C, an uplink station 120, a program manager 130, a first modem 140, and the receiver 200 includes a tuner and Demodulator 210, MPEG decoder 220, image synthesizer 230, text and JPEG decoder 240, first memory 250, second memory 260, video encoder 270, second modem 280, and a control unit 290.

In FIG. 1, when a newspaper service subscriber signal that desires newspaper information service of a specific field is input to the controller 290 through a line L1, the controller 290 provides the signal to the second modem 280. The subscriber signal provided to the second modem 280 is provided to the program manager 130 through the telephone line 300 and the first modem 140.

The program manager 130 allocates a subscriber ID to allow only the corresponding subscriber to receive newspaper information service in a specific field, and then provides the subscriber ID to the first modem 140. The subscriber ID provided to the first modem 140 is provided to the control unit 290 of the receiving unit 200 via the telephone line 300 and the second modem 280, and the control unit 290 stores it in an internal memory. do.

Meanwhile, the program supply units 110A, 110B, and 110C of the transmitter 100 transmit program information such as TV broadcast programs provided by respective broadcasters and data information such as electronic newspaper service information to the uplink station 120. to provide.

The uplink station 120 compresses and encodes program information and data information by a predetermined compression algorithm, adds control information, and then forms a packet stream and transmits it through a carrier channel.

The program manager 130 manages program information and data information provided by each program supply unit 110A, 110B, and 110C. One of the main operations is to a subscriber who wants to receive paid information such as an electronic newspaper service. Instead of providing the information, the fee is collected.

That is, when the uplink station 120 forms the e-newspaper service information in a packet stream, the program manager 130 controls the uplink station 120 to be formed separately for each field, but the subscriber has a newspaper in a specific field. If the user wants to receive the information service, the ID is assigned to the corresponding subscriber through the first modem 140 as described above, and the subscriber's ID is inserted into the newspaper information packet stream of the desired field.

On the other hand, the tuner and demodulator 210 is automatically tuned to a carrier channel including a predetermined broadcast channel under the control of the controller 290, receives a multiplexed packet stream, the packet stream corresponding to the control information It provides to the control unit 290.

The controller 290 stores the control information provided from the tuner and the demodulator 210 in the first memory 250, and then analyzes the program ID information included in the control information to be used by the default broadcast channel or viewer. After searching the selected broadcast channel, the tuner and demodulator 210 is controlled such that only program information of the found broadcast channel is provided to the MPEG decoder 220.

The MPEG decoder 220 decodes broadcast program information provided from the tuner and demodulator 210 based on the MPEG method, and then provides audio data to an audio line, and provides video data to an image synthesizer 230. .

On the other hand, the controller 290 searches the internal memory to determine the subscriber ID that can be provided with the electronic newspaper service of a specific field, and then controls the tuner and demodulator 210, the subscriber in the packet stream corresponding to the data information A packet stream having an ID equal to the ID is outputted.

Therefore, the tuner and demodulator 210 detects only newspaper information of a field desired by the subscriber from the electronic newspaper service information included in the data information and provides the same to the controller 290. The controller 290 stores newspaper information of a specific field provided from the tuner and the demodulator 210 in the second memory 260.

Although not shown in the drawing, the second memory 260 is divided into text information, a text information storage area for storing still image information, and a still image information storage area.

When a request signal for requesting the electronic newspaper service through the line L1 is input to the controller 290, the controller 290 detects newspaper information of a specific field stored in the second memory 260 and transmits the newspaper information to the text and JPEG decoder 240. to provide. The text and JPEG decoder 240 decodes the text newspaper information and the still image newspaper information and provides them to the image synthesizer 230.

As is well known, the electronic newspaper information is composed of text and still images, and at the time of transmission from the transmitter 100, the text is encoded by a text compression technique, and the still image is encoded by a JPEG compression technique. Accordingly, the text and JPEG decoder 240 decodes the text newspaper information and the still image newspaper information, respectively, restores the original newspaper signal, and provides the resulting video data to the image synthesizer 230.

The controller 290 provides three mode signals, for example, a normal mode, an electronic newspaper mode, and a synthesis mode signal, to the image synthesizer 230.

When the normal mode signal is input to the image synthesizing unit 230, the image synthesizing unit 230 provides video data output from the MPEG decoder 220 to the video encoder 270. When the electronic newspaper mode signal is input to the image synthesizing unit 230, the image synthesizing unit 230 provides text and video data output from the JPEG decoder 240 to the video encoder 270. When the synthesis mode signal is input to the image synthesizer 230, the image synthesizer 230 synthesizes the video data output from the MPEG decoder 220 and the video data from the text and JPEG decoder 240 to the video encoder 270. To provide. In this case, for example, the synthesis method may allow a broadcast program to be displayed at the top of the screen, and electronic newspaper information to be displayed at the bottom of the screen.

The video data output from the image synthesizer 230 is provided to the video encoder 270. The video encoder 270 converts the video data provided from the image synthesizing unit 230 into an analog NTSC video signal and provides it to a display side, which is not shown.

As described above, in the electronic newspaper service using the digital TV system, only the information of the field desired by the user can be reduced while reducing the data transmission capacity by providing only the electronic newspaper information of a specific field requested by the user. There is an effect that can be acquired.

Claims (2)

On the transmitting side, a plurality of broadcast program information, data information including electronic newspaper information, and control information for detecting a broadcast program of a specific channel are multiplexed and transmitted in a packet stream, and on the receiving side, the receiving side of the specific channel is based on the control information. In the electronic newspaper service method using a digital TV system for detecting a broadcast program and the electronic newspaper information: Ⓐ. Requesting electronic newspaper service information of a specific field from the receiving side to the transmitting side; Ⓑ. The transmitting side assigns the subscriber ID to the receiving side, and then distinguishes the electronic newspaper information for each field, and configures only the newspaper information of the field applied by the receiving side into a packet stream, Inserting and transmitting a corresponding ID; Ⓒ. And receiving, by the receiving side, only the newspaper information of the requested field based on the assigned subscriber ID when the packet stream is transmitted from the transmitting side. The electronic newspaper service method of claim 1, wherein the transmitting side compresses and transmits newspaper information of a field applied by the receiving side.