KR200385300Y1 - Embedded Interactive DOCSIS Set-Top Gateway Module for a Digital Open Cable Broadcasting - Google Patents

Abstract

The present invention is an embedded interactive DOCSIS Set-Top Gateway Module for a Digital Open Cable Broadcasting.

The present invention transmits digital broadcasting protocol message through out-of-band channel using RF digital cable system matching technology through HFC network based on the standard of bidirectional digital open cable and meets DOCSIS1.0 / 1.1 / 2.0 specification. It is a built-in DSG module for bidirectional all-in-one digital open cable broadcasting with internet matching technology, high quality digital broadcasting reception, and digital broadcasting protocol software technology for providing various multimedia contents services.

Cable broadcasters at home and abroad are adopting the DSG method according to the DOCSIS standard as a digital broadcasting protocol of a commercially available two-way digital open cable TV. The structure of two-way digital broadcasting, which is currently being developed and commercialized, consists of an external digital STB and a digital TV linked to the headend equipment of each broadcasting company. The specification of the large screen digital TV can be embedded with digital STB, and the application of the bidirectional communication module for the integrated digital open cable TV will become an indispensable element.

According to the present invention, an RF coaxial cable matching unit for connecting a telecommunication network through an HFC network centered on a communication processor equipped with an open cable digital broadcasting DSG protocol and an out-of-band channel downlink demodulator and an uplink modulator for transmitting an Internet protocol message It consists of DOCSIS MAC PHY, 10/100 Base-T Ethernet matching unit for communication between external host processor and POD module, USB matching unit, memory unit for program storage and execution, and power unit.

Description

Built-in DSG module for bidirectional communication for integrated digital open cable broadcasting {Embedded Interactive DOCSIS Set-Top Gateway Module for a Digital Open Cable Broadcasting}

The present invention implements a module equipped with DSG protocol software for transmitting digital broadcasting protocol messages through out-of-band channels using RF digital cable system matching technology based on HFC network based on the standard of bidirectional digital open cable. It is a built-in DSG module for bidirectional all-in-one digital open cable broadcasting equipped with high-speed internet matching technology satisfying 0 / 1.1 / 2.0 specification and digital broadcasting protocol software technology for providing high quality digital broadcasting and various multimedia contents services.

Cable broadcasters at home and abroad are adopting the DSG method according to the DOCSIS standard as a digital broadcasting protocol of a commercially available two-way digital open cable TV. The specification of large screen digital TV can be embedded with digital STB, and the application of an integrated digital open cable broadcasting bidirectional communication module will become an indispensable element.

Conventionally, unidirectional broadcasting service is being carried out by using analog STB and general TV or digital TV through satellite and terrestrial waves, and the structure of bidirectional digital broadcasting, which is currently being developed and commercialized, is connected with external digital STB which interworks with the headend equipment of each broadcasting company. It consists of a digital TV. Current OOB (Out-of-Band) structure for bi-directional data transmission is limited by SCTE's DVS167 and DVS178 specifications to external STB, and is limited in service by manufacturer's monopoly and patent. Not supply

The built-in DSG module, compliant with the digital open cable specification, conforms to the matching requirement of transmitting open DOCSIS standard messages, unlike SCTE's two methods, DVS167 and DVS178.

The purpose of the present invention is to provide a DSG for transmitting bidirectional digital broadcast protocol messages through out-of-band channels (OOB) using RF digital cable system matching technology based on HFC network based on the standard of digital open cable. By implementing a module equipped with protocol software in a compact form of business card size, it is embedded in an integrated digital TV or digital STB as a single component form to provide high-speed Internet matching technology, high-quality digital broadcasting, and various multimedia content services.

The technical problem applied to the present invention is to out-of-band the Internet protocol message applying the DSG tunneling scheme that satisfies the DOCSIS DSG (DOCSIS Set-Top Gateway) specification (CM-SP-103-041124). The software and hardware module implementation for the matching of digital broadcasting protocol software transmitted through the RFC) and RF digital cable system of DOCSIS 1.0 / 1.1 / 2.0.

1 is a schematic diagram of an overall system of the present invention, a processor unit 100 having DSG protocol software, an RF matching unit 200 for RF signal processing, and a network matching unit for transmitting Internet and broadcast data through an HFC network ( 300, a processor peripheral unit 400 for storing and executing a software program, an external device matching unit 500 for communicating with a digital TV or digital STB, an external device unit 600, and a power supply unit 700. .

<Processor part>

The processor unit 100 is equipped with a DSG protocol based on a digital open cable as a core of the system, so that the digital broadcasting channel reception restriction system (CA), system information (SI), broadcast program guide (EPG), RF matching unit for RF signal processing via the HFC network, the network matching unit 300 of the device, from the head-end equipment of the broadcaster to service information data and Internet data such as an emergency alert system (EAS) and a qualification management message (EMM) The RF tuner 210 and the downlink signal demodulator 220 of 200 are transferred to the DOCSIS MAC PHY unit 240. The transmitted Internet protocol message is packetized by the processor unit 100 and transmitted to the external device unit 600 through the external device matching unit 500. In addition, the Internet data from the external device unit 600 and the request and response messages are packetized by the processor unit 100 and converted into Internet protocol messages so that the DOCSIS MAC PHY unit 240, the uplink modulation unit 230, and the RF are processed. It is transmitted to the network matching unit 300 through the tuner unit 210.

<RF matching part>

The RF matching unit 200 is connected to the device using an F-Type connector for physical coaxial cable matching for high-speed Internet and digital cable broadcasting service through the HFC network, which is the network matching unit 300. The RF signal connected through the coaxial cable is separated into a downlink signal and an uplink signal through the RF tuner unit 210, respectively, to the DOCSIS MAC PHY 240 through the downlink signal demodulator 220 and the uplink signal modulator 230. Connected. DOCSIS MAC PHY 240 also supports DOCSIS 1.0 / 1.1 / 2.0 specifications.

Processor Peripheral

The processor peripheral unit 400 may store a software program and a system environment for processing various Internet data and service information, an authentication key data for security, and execute a program in the processor unit 100. Device or the like.

<External device matching part>

The external device matching unit 500 interlocks with the processor unit 100 to transmit Internet data and various broadcast service message information data to the digital STB 610 of the external device unit 600, and has a subscriber authentication and reception restriction system function. Communication with the unit 620 and the digital TV 630 is performed. The external device matching unit 500 includes an RS-232 matching unit 510 that provides an RS-232 serial communication function for a user operation, an Ethernet matching unit 520 that provides a function of 10 / 100Base-T, and USB1.1. It is composed of a USB matching unit 530 to provide a function.

<External device part>

The external device unit 600 is a digital STB 610 that processes video and audio signals of digital broadcast MPEG data, and a POD module unit 620 having a subscriber authentication and reception restriction system function. And a digital TV 630 for inputting and outputting video, audio, and internet data signals.

<Power supply part>

The power supply unit 700 is a power supply of the digital STB 610 and the digital TV 630 in which a circuit or device operating by receiving driving power is applied through the USB matching unit 530 of the external device matching unit 500. It consists of a circuit that operates by receiving driving power through the circuit.

When the two-way digital cable broadcasting service is commercialized at home and abroad, the built-in DSG module for two-way communication for integrated digital open cable broadcasting is commercialized in the form of a miniature module of business card size, and it is mounted in the form of parts inside the digital integrated TV or external STB. It can provide broadcasting service and various multimedia services through digital TV, and promote market development and national competitiveness by promoting the development of large screen digital TV and the increase of digital multimedia contents service industry.

1 is a block diagram of a system proposed in the present invention.

* Explanation of Signs of Major Parts of Drawings *

100: processor unit

200: RF matching unit

210: RF tuner section

220: downlink signal demodulator

230: uplink signal modulation section

240: DOCSIS MAC PHY part

300: network matching unit

400: processor periphery

500: external device matching unit

510: RS-232 matching unit

520: Ethernet matching unit

530: USB part

600: external device

610: digital STB

620: POD module part

630: Digital TV

700: power supply

Claims (2)

The present invention is equipped with a software protocol that conforms to the digital open cable DSG (DOCSIS Set-Top Gateway) standard to configure the processor unit 100 for processing broadcast messages through DSG Tunneling, Tuner unit 210, downlink signal demodulator 220, and uplink signal modulator constituting RF matching unit 200 for providing a high speed Internet cable modem function that satisfies DOCSIS 1.0 / 1.1 / 2.0 standard that is matched with HFC network ( 230) and DOCSIS MAC PHY unit 240, 10/100 Base-T Ethernet matching unit 520 or USB matching unit for communicating with the digital TV 630 or digital STB 620 of the external device unit 600 in a module form inside the digital TV or digital STB. 530, Built-in DSG module for two-way communication for digital open cable broadcasting having a power supply 700 that receives power from the USB matching unit 530, digital TV 630 or digital STB (620) required for the module. The integrated DSG module according to claim 1, wherein the integrated DSG module for bidirectional communication for digital open cable broadcasting is a built-in DSG module for an integrated digital TV with a digital STB that provides a bidirectional digital open cable broadcasting service by distinguishing systems according to matching technologies. Built-in DSG module for digital STB to provide services.