KR100690931B1 - Digital Multimedia broadcasting service system - Google Patents

Abstract

 The present invention relates to a wired / wireless digital broadcasting service system that aims for a communication of two-way digital multimedia broadcasting that combines two-way advantages of a broadcasting area and communication so that high-quality and high-quality digital broadcasting can be serviced by wired or wireless.

The present invention proposes a wired / wireless digital broadcasting service system capable of wired / wireless high-definition and high-quality two-way digital broadcasting (DMB) using a cable TV network (HFC network) through a TV or mobile device of a subscriber according to a live or subscriber's request. In the digital multimedia broadcasting system provided using a cable TV network (HFC network), it is possible to channelize the subscriber so that the subscriber can easily select it like a general analog broadcasting, and to provide a program for channelizing the service providing system. It is installed in the operation management server of the subscriber station to enable the configuration of the subscriber terminal with a minimum configuration, to provide an economical subscriber terminal. In addition, an additional service function such as a video call using a cable TV network (HFC network) is provided.

DMB, cable digital broadcasting, multimedia broadcasting

Description

Wired and wireless digital broadcasting service system {Digital Multimedia broadcasting service system}

1 is a schematic block diagram of a wired / wireless digital broadcasting service system of the present invention.

2 is a block diagram showing the configuration of a wired / wireless digital broadcasting service system of the present invention.

3 is a detailed block diagram of a subscriber station according to the present invention;

4 is a view showing an example of a video phone screen displayed on the TV in the present invention.

The present invention relates to a wired / wireless digital broadcasting service system that aims for a communication of two-way digital multimedia broadcasting that combines the two-way merits of a broadcasting area and communication to enable high-quality and high-quality digital broadcasting services.

Modern people are becoming an indispensable media medium through TV broadcasting as a means of obtaining various information from simple entertainment to news and status information of various countries around the world.

However, TV broadcasting has a limit in satisfying the needs of various users due to the characteristics of one-way information transmission.

With the recent development of various digital and multimedia technologies, new and diverse information and communication (IT) services are provided and developed.

In order to provide a variety of services that can be provided according to a user's needs anytime, anywhere, various types of technologies are proposed.

Communication is shifting its center of gravity from data service mainly to voice service through existing telephones, and broadcasting is expanding its scope to provide additional information by individual information delivery and two-way communication, not just video-oriented program delivery.

This change is driven by the development of technology for convergence enabled by digital technology, and with the development of hardware such as processor, memory, display, modem, software such as audio visual signal compression and transmission, web document processing, etc. It is made possible by applying the results of technical development and standardization to each application service system organically and integratively.

Recently, a multimedia broadcasting service, which is called integrated service digital broadcasting (ISDB), is considered as part of a data service and is integrated into a comprehensive information broadcast.

DMB (Digital Multimedia Broadcasting) is one of these, and DMB is a next-generation multimedia service that enables users to watch and listen to TV and radio broadcasts through mobile phones, personal digital assistants (PDAs), dedicated terminals, and in-vehicle terminals. As long as you have a terminal, you can enjoy clear high-definition video and CD-level sound anytime, anywhere.

DMB service is divided into satellite DMB and terrestrial DMB according to the transmission method.

Satellite DMB is a method in which a broadcasting center transmits a program to a satellite, and the satellite spreads it to DMB terminals nationwide, while terrestrial DMB uses DMB broadcasting by using an empty airwave VHF channel. Receiving radio waves through the terminal.

As such, various multimedia broadcasting services have been proposed, and the present invention also relates to such multimedia broadcasting services.

The present invention aims to propose a new broadcasting service system that combines the unique areas of broadcasting and the two-way advantage of communication. Live or subscriber high-definition and high-quality two-way digital broadcasting (DMB) using a cable TV network (HFC network). In accordance with the request of the subscriber through the TV or mobile device of the wired and wireless wired and wireless digital broadcasting service system is proposed.

In addition, the present invention is a digital multimedia broadcasting system provided using a cable TV network (HFC network), so that the channel can be easily selected by the subscriber like a general analog broadcast, and a program for channelizing a service providing system It is to propose a wired / wireless digital broadcasting service system that can be installed in the operation management server of the subscriber station to enable the configuration of the subscriber station with a minimum configuration and to provide an economical subscriber station.

Then, as the cable TV network (HFC network) is used, it is to propose a wired / wireless digital broadcasting service system that enables additional service functions such as video telephony using the cable TV network.

The present invention,

TV signal processing unit for transmitting analog TV broadcast signal to TV of each consumer's home through HFC (Hybrid Fiber Coax), and storing analog broadcast signal as digital signal and converting into stream and converting the converted signal into cable A service providing system including a digital broadcasting service processor for transmitting to a television network (HFC);

Cable modem for receiving cable broadcasting signal or service broadcasting signal transmitted through cable TV network (HFC), and set-top box function for decoding digital broadcasting signal received through cable modem and outputting to subscriber TV IPC including; and a subscriber system including a video converter for switching the decoded digital broadcast signal or analog TV broadcast signal from the subscriber station to the TV according to the control of the subscriber terminal,

The TV signal processing unit of the service providing system includes a modulation unit (QAM; Quadrature Amplitude Modulation) for receiving and amplifying and modulating an analog broadcast signal, and a multiplexing transmitter / receiver (MUX; Multiplexer) for receiving and transmitting a broadcast signal output from the amplification modulation unit. And a protocol matching means (Head end) for performing protocol matching to transmit analog broadcast signals transmitted through multiplexing transmission / reception means to TV of each consumer's home through cable TV (Hybrid Fiber Coax). It is characterized by.

An encoder that receives an analog TV broadcast signal and converts it into a digital stream file for TV and mobile use, a storage means for storing the digital stream file converted by the encoder, and a stream server for providing a subscriber with the digital stream file converted by the encoder. And a video on demand (VOD) server for providing stored stream files according to the subscriber's request, an operation management server for processing a series of processes for managing the subscriber and providing a digital broadcasting service according to the subscriber's request, and a cable. It is characterized in that it comprises a data conversion means (CMTS; Cable Modem Termination System) for packet conversion of cable modem data and Internet data in order to send and receive data through the TV network.

The TV broadcast signal includes an over-the-air broadcast signal and a cable broadcast signal.

With reference to the embodiment shown in the accompanying drawings, the present invention featuring such a configuration will be described in detail the configuration and operation process as follows.

Cable TV signal processing unit 110 for transmitting the analog broadcast signal to the TV of each consumer through the cable TV network (HFC), and converts the analog broadcast signal into a digital stream data file, and stores the converted data and cable TV network A service providing system (100) including a digital broadcasting service processing unit (120) for transmission to (HFC),

A cable modem 210 for receiving a cable broadcast signal transmitted through a cable TV network (HFC) or a digital broadcast signal provided by the service providing system 100, and decoding the digital broadcast signal received through the cable modem 210. A subscriber station 220 for decoding and outputting to a subscriber TV, an image converter for switching a digital broadcast signal or an analog cable broadcast signal decoded from the subscriber terminal 220 to be output to the TV under the control of the subscriber station 220. (video converter) 230 and an AP 240 that receives wireless broadcast data from the subscriber terminal 220 and provides an access point of a wireless device such as a cellular phone, a notebook computer, a PDA, and the like. It consists of a subscriber system 200 is configured to

The cable signal processing unit 110 of the service providing system 100 receives an analog broadcast signal and amplifies and modulates the QAM 111 and transmits the broadcast signal output from the QAM 111 through a cable TV network (HFC). Multiplexer (MUX) 112 and a headend for protocol matching to transmit analog broadcast signals transmitted through the multiplexer 112 to the TV of each consumer's home through a cable fiber network (HFC; Head end 113).

The digital broadcast service processor 120 of the service providing system 100

An encoder 121 for receiving an analog broadcast signal into a digital stream file for TV and mobile, a broadcast information database 122 for storing the digital stream file converted by the encoder, and a digital signal converted by the encoder 121. A stream server 123 for providing a stream file to the subscriber, a video on demand server 124 for providing a stored stream file at the subscriber's request, and a digital management according to the subscriber's management and the subscriber's request. Operation management server 125 performing a series of processes for providing a broadcast service, and data conversion unit (CMTS) in charge of packet conversion of cable modem data and Internet data in order to send and receive data through the cable TV network (HFC) ; Cable Modem Termination System (126) and a hub (HUB) 127 for data input and output between each server.

In addition, the operation management server 125 of the digital broadcasting service processing unit 120 includes a management / authentication server 125a which provides overall system management of a service providing system and an authentication process of a connected user, and a user who receives a service. It includes a billing server 125b that adds a fee and provides a payment process for the added fee, and a web server 125c that provides an internet web access environment.

The subscriber station 220 is connected to the cable modem 210, the cable modem interface unit 221, connected to the service providing system 100 provides a series of functions for receiving digital broadcasting (DMB) service and analog broadcasting / Set-top function control unit 222 for digital broadcast switching control, wireless data transmission interface unit 223 connected to the AP 240 for transmitting wireless broadcast data, and subscriber PC via a cable TV network (HFC) Router (224) which is a PC interface means for enabling web access, and VoIP (Voice over Internet Protocol) for providing Internet video telephony by using a cable television network (HFC) by connecting a video telephone ( 225, a user key input unit 226 including a plurality of keys for using a service provided by the channel selection and service providing system 100, and a user key input unit 226. And a remote controller receiver 227 for receiving a remote controller signal transmitted from a remote controller including the same user input key.

The set-top function controller 222 may include a demultiplexer (D-Mux) 222a for receiving and receiving digital broadcast data of the digital broadcast service processor 120 of the service providing system 100 through a cable modem 210; A decoder 222b for converting the digital broadcast data input through the demultiplexer 222a into data for display and output, and a channel or video changer selected by the subscriber through the user key input unit 225 configured in the remote controller or the subscriber terminal 220. And a control unit 222c for selecting an analog cable TV signal or a digital broadcast signal 230 and performing control according to each function request.

The present invention configured as described above,

(A). To provide digital broadcasting (DMB) to the subscriber system 200 through a cable TV network (HFC),

(B). In addition, in providing such a service, it is possible to enable two-way service,

(C). Such a service can be implemented as a home TV in the subscriber system 200, and also can be implemented through a mobile device such as a mobile phone, a PDA, and the like, and a wireless network such as a notebook.

(D). In addition, it is possible to provide additional services such as VOIP and VOD.

The service providing system 100 for providing such a service includes a cable signal processor 110 for providing an analog TV broadcast and a digital broadcast service processor 120 for a digital broadcast service.

The digital broadcast service processor 120 configures an encoder 122 for encoding the analog broadcast signal into digital stream data so that the analog broadcast signal can be implemented in a mobile device such as a TV mobile phone or a PDA.

The cable broadcast signal broadcast in real time may be converted into a digital broadcast signal and provided, and may be stored in the database 122 as described above and provided according to a subscriber's request (VOD).

In addition, as shown in Figure 1, as well as the analog broadcast signal received from each cable broadcasting station, the system can be built so that the broadcast can be produced by the service providing system 100 itself, it is possible to provide broadcast data from such a system.

The analog broadcast signal may include the cable broadcast signal and the TV airwave signal described above.

In addition, the digital broadcast service processing unit 120 has an operation management server unit 125 to manage subscribers accessing the web through a cable TV network (HFC), and operates the system.

When providing broadcasts to subscribers through cable TV networks (HFC), link information is provided for each broadcast so that subscribers can select desired channels simply by selecting channels, such as selecting broadcast channels on TVs. In addition, a program for selecting a channel from such information is installed in the operation management server unit 125 to enable this.

The image changer 230 of the subscriber system 200 enables the subscriber to selectively watch analog cable broadcasting and digital broadcasting, and the analog broadcasting signal output from the cable modem 210 and the digital decoded at the subscriber terminal 220. The broadcast signal is input, and the switching control thereof is performed by the control signal of the subscriber station 220 according to the subscriber's selection.

In addition, the AP 240 is a device for providing a wireless access point, the RF broadcast data converted for the mobile through the AP 240 is received by the mobile phone, PDA, laptop located within the corresponding radius to watch Make it possible.

Of course, such mobile devices should be devices that have a built-in program for receiving and displaying data from the AP 240 and are hardware-supported.

The cable modem 210, the image converter 230, and the AP 240 may be embedded in the subscriber station (iPC) 220.

An interface means for connecting a video telephone is configured for an additional service, and a VoIP 224 for implementing video telephone is mounted in the video telephone connected through the interface means.

At this time, as shown in Figure 4, it is possible to display the video phone screen on the TV screen, for the control by mounting the program in the operation management server unit 125C to enable it.

That is, the subscriber terminal (iPC) 220 is equipped with only a program for proceeding the function flow according to the minimum data decoding and subscriber selection, the necessary program or information as described above is installed in the operation management server unit 125 Make it possible.

Referring to the operation of the present invention having such a configuration in detail as follows.

First, the cable TV signal processing will be described.

The cable signal processing unit 110 amplifies and modulates the analog broadcast signal transmitted from the input cable TV broadcasting station and transmits it to the subscriber system 200 through the cable TV network (HFC).

As such, the cable TV analog broadcast signal transmitted through the cable TV network (HFC) is received through the cable modem 210 and displayed on the subscriber TV through the image converter 230.

On the other hand, the digital broadcast processing converts the analog broadcast signal of the cable TV broadcast station input as described above into a stream file by the encoder 121 and stores it in the database 122.

In this case, the encoder 121 converts and produces a stream file for the TV output and the mobile output for display and output on a mobile device such as a cellular phone and a PDA, respectively, and stores the stream file in the database 122 to output the live broadcast. The broadcast file stream file thus converted is supplied to the stream server 123.

In the stream server 123, such a stream file is streamed to a subscriber connected to a cable television network (HFC).

Such a stream file is converted into a data packet and transmitted through a data conversion unit (CMTS) 126 in accordance with a cable TV network (HFC).

The cable modem 210 of the subscriber system 200 transmits the digital broadcast data (stream file) transmitted as described above to the subscriber station 220, and the subscriber station 220 decodes the input stream file as described above. Converts to a TV output signal.

The converted file is supplied to the image converter 230 and output through the image converter 230 as a TV.

At this time, the video converter 230 selects a broadcast to be output to the TV under the control of the subscriber station 220, that is, to enable viewing and channel switching of digital broadcasting (DMB) or analog broadcasting.

The subscriber selects a broadcast to be output to the TV as described above using the remote controller or the user key input unit 225 of the subscriber terminal 220. As described above, the channel switching and function control are performed by the service providing system 100. Is performed according to the program information mounted on the operation management server unit 125.

In addition, as described above, the information decoded by the subscriber station 220 is transmitted through the AP 240 connected to the wireless data transmission interface unit 223 to perform digital broadcasting through a mobile phone, a PDA, or a notebook within the corresponding access range. Make it visible.

The service providing system 100 provides a VOD broadcast service that enables a subscriber to watch live or stored broadcasts according to the requested information.

When the subscriber requests the VOD broadcasting service through the subscriber terminal 220, the requested data is transferred to the service providing system 100 through the cable TV network (HFC), which is inputted from the VOD server 124 to the request information. The broadcast information stored in the broadcast information database 122 is loaded and transmitted to the subscriber system 200.

Through the above process, the subscriber can watch the analog broadcast transmitted by the cable TV as it is, or can select and watch the digital broadcast (DMB) converted to the digital broadcast as described above. The part that was broadcast can be requested and watched.

As described above, the subscriber may access the web server 125c of the operation management server 125 through the subscriber terminal 220 and proceed to receive the VOD service, or use a web server (PC) 125c), the VOD broadcasting service request process may be performed.

For example, when the subscriber terminal 220 requests the VOD broadcast service, the web server 125c receives a video (eg, a broadcast list) necessary for the requested subscriber to receive the VOD broadcast service. In operation 200, the video is output through the TV, and the user requests a VOD broadcast service while selecting a corresponding item by using a remote controller.

In the case of using a PC, a browser screen provided by the service providing system 100 may be displayed through a browser provided by the PC so that the subscriber may request desired broadcast information through the browser screen.

On the other hand, according to the Internet protocol provided by the Voip 224 of the subscriber terminal 220, the subscriber can use a video phone through the cable network (HFC).

At this time, the subscriber can select as needed to output the video displayed on the video call to TV,

When the user requests the TV call screen of the video phone, the set-top function controller 222 processes the video data to be displayed on the video phone and outputs it to the video converter 230 to display the screen through the TV.

4 shows an example of a video call screen displayed on a subscriber TV.

According to the screen display of FIG. 4, the subscriber can watch the screen of the other party, my screen, and the program that he / she is watching, and even display an advertisement screen as necessary.

As described above, the program for displaying the screen may be controlled by the set-top function controller 222 of the subscriber station 220 according to the program information mounted in the operation management server 125.

Such a service is performed according to the management operation of the operation management server unit 125 of the service providing system 100, and the authentication of the allowable subscriber of the broadcast service in the management / authentication server (125a) of the operation management server unit 125 And the billing server 125b to proceed with the process of billing, payment, etc. to add to the subscriber, and to exchange the data with the web access subscriber via the web server (125c) to enable the service as described above do.

The billing of the subscriber can be variously applied according to the service billing system, and the billing server 125b adds a fee using the corresponding information, and proceeds with the settlement of the added fee.

As described above, according to the system of the present invention, high-definition, high-definition digital multimedia interactive broadcasting (DMB) can be performed, and additional services such as video telephony (VOIP) and VOD service can be provided.

In addition, when the subscriber terminal is configured at various locations and the AP is installed, two-way DMB service as described above is also available to mobile phone and PDA users in the corresponding radius according to the installation position of the AP.

Claims (12)

The cable TV signal processor 110 for transmitting the analog broadcast signal including the cable broadcast signal and the terrestrial TV broadcast signal transmitted from the cable broadcasting station to the TV of each consumer's home through the cable TV network (HFC), and the analog broadcast signal A service providing system (100) having a digital broadcast service processor (120) for converting and storing the converted data into a digital stream data file and transmitting the converted data to a cable TV network (HFC); A cable modem 210 for receiving a broadcast signal transmitted through a cable TV network (HFC) or a digital broadcast signal provided by the service providing system 100, and decoding the digital broadcast signal received through the cable modem 210 ( A subscriber terminal 220 for decoding and outputting to the subscriber TV, an image converter for switching the decoded digital broadcast signal or analog cable broadcast signal from the subscriber terminal 220 under the control of the subscriber terminal 220 to output to the TV ( A subscriber having an AP 240 that receives wireless broadcast data from a video converter 230 and a subscriber terminal 220 and provides an access point of a wireless device such as a cellular phone, a notebook computer, a PDA, or the like. System (200); wired and wireless digital broadcast service system, characterized in that comprises a. delete According to claim 1, The cable signal processing unit 110 of the service providing system 100 receives the analog broadcast signal and amplifies and modulates the QAM 111, and the broadcast signal output from the QAM 111 cable TV network ( Transmitting multiplexer (MUX) 112 for transmission through HFC, and transmitted analog broadcast signal transmitted through multiplexer 112 to TV of each consumer's home through cable fiber network (HFC) Wire end and wireless digital broadcasting service system, characterized in that it comprises a head end (Head end) (113) for protocol matching. The method of claim 1, wherein the digital broadcast service processing unit 120 of the service providing system 100, An encoder 121 for receiving an analog broadcast signal into a digital stream file for TV and mobile, a broadcast information database 122 for storing the digital stream file converted by the encoder, and a digital signal converted by the encoder 121. Stream server 123 for providing the stream file to the subscriber, Video On Demand (VOD) server 124 for providing the stored stream file at the subscriber's request, Digital broadcasting according to the subscriber's management and subscriber's request An operation management server unit 125 for performing a series of processes for providing a service, and a data conversion unit (CMTS) in charge of packet conversion between cable modem data and Internet data in order to exchange data through a cable TV network (HFC); Cable Modem Termination System (126) and wired and wireless, characterized in that it comprises a hub (127) for data input and output between each server (HUB) Digital Broadcast Service System. 5. The management / authentication server 125a of claim 4, wherein the operation management server 125 of the digital broadcasting service processor 120 provides an overall system management of a service providing system and an authentication process of a connected user. A billing server 125b for adding a fee of a user who receives a fee and providing a billing process for the added fee, and a web server 125c for providing an internet web access environment. Wired and wireless digital broadcasting service system, characterized in that. The method of claim 1, wherein the subscriber station 220 is connected to the cable modem 210, the cable modem interface unit 221, a serial for connecting to the service providing system 100 to receive digital broadcasting (DMB) service User key input unit 226 including a set-top function control unit 222 for providing a function of the control and analog broadcast / digital broadcast switching control, and a plurality of keys for using the service provided by the channel selection and service providing system 100 And a remote control receiver (227) for receiving a remote controller signal transmitted from a remote controller including a user input key as in the user key input unit (226). The wire / wireless digital broadcasting service system of claim 6, wherein the subscriber station 220 further comprises a wireless data transmission interface unit 223 connected to the AP 240 for transmitting wireless broadcast data. . 7. The cable TV network according to claim 6, wherein the subscriber PC is connected to a router 224, which is a PC interface means for enabling web access through a cable TV network, and a video telephone. Wired / wireless digital broadcasting service system comprising a Voice over Internet Protocol (VoIP) 225 for providing an Internet telephony function. The de-multiplexer (D-Mux) of claim 6, wherein the set-top function controller 222 receives and receives digital broadcast data of the digital broadcast service processor 120 of the service providing system 100 through a cable modem 210. 222a, a decoder 222b for converting the digital broadcast data input through the demultiplexer 222a into data for display and output, and a user key input unit 225 in which the subscriber is configured in the remote controller or the subscriber terminal 220. And a control unit (222c) configured to control an analog cable TV signal or a digital broadcast signal of the selected channel or the video converter 230 and control according to each function request. 9. The subscriber terminal 220 according to claim 8, wherein the subscriber terminal 220 receives the output display data of the video telephone, and is mounted on the operation management server unit 125 of the service providing system 100 when the subscriber selects (requests). A wired / wireless digital broadcasting service system, characterized in that the display is output on the TV bottom surface according to a program. 5. The wire / wireless digital broadcasting service system according to claim 4, wherein the operation management server (125) is loaded with a program to be operated in the subscriber station (220). delete

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