KR20080050060A - Broadcasting receive apparatus and security method thereof - Google Patents

Broadcasting receive apparatus and security method thereof Download PDF

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Publication number
KR20080050060A
KR20080050060A KR1020060120843A KR20060120843A KR20080050060A KR 20080050060 A KR20080050060 A KR 20080050060A KR 1020060120843 A KR1020060120843 A KR 1020060120843A KR 20060120843 A KR20060120843 A KR 20060120843A KR 20080050060 A KR20080050060 A KR 20080050060A
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South Korea
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security information
unit
external device
broadcast receiving
information
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KR1020060120843A
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Korean (ko)
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KR100837430B1 (en
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서인교
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삼성전자주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

A broadcasting receiving apparatus and a security method thereof are provided to prevent a broadcasting signal from being transmitted to a stolen external device, thereby increasing the security function of the broadcasting receiving apparatus. A CAS(Conditional Access System) unit(130) descrambles a received broadcasting signal using an authentication card. A first control unit(190) extracts the ID(Identification) of the authentication card and generates security information by a combination of the authentication card ID and product information. A storage unit(170) stores the security information. A first interface unit(160) transmits the security information to a predetermined external device(200) so as for the security information to be stored in the external device.

Description

방송수신장치 및 그의 보안방법{Broadcasting receive apparatus and security method thereof}Broadcasting receiving apparatus and security method

도 1은 본 발명의 일 실시예에 따른 방송수신장치 및 이에 연결된 외부장치의 개략적인 구성을 나타낸 블럭도, 그리고,1 is a block diagram showing a schematic configuration of a broadcast receiving device and an external device connected thereto according to an embodiment of the present invention;

도 2는 본 발명의 일 실시예에 따른 방송수신장치의 보안방법을 설명하기 위한 흐름도이다.2 is a flowchart illustrating a security method of a broadcast receiving apparatus according to an embodiment of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

100 : 방송수신장치 110 : 튜너부100: broadcast receiving device 110: tuner unit

120 : 복조부 130 : CAS부120: demodulation unit 130: CAS unit

140 : 카드부 150 : 제1신호처리부140: card unit 150: first signal processing unit

160 : 제1인터페이스부 170 : 제1저장부160: first interface unit 170: first storage unit

180 : 제1조작부 190 : 제1제어부180: first control unit 190: first control unit

200 : 영상표시장치 210 : 제2인터페이스부200: image display device 210: second interface unit

220 : 제2신호처리부 230 : 디스플레이부220: second signal processing unit 230: display unit

240 : 제2저장부 250 : 제2조작부240: second storage unit 250: second operation unit

260 : 제2제어부260: second control unit

본 발명은 방송수신장치 및 그의 보안방법에 관한 것으로, 더욱 상세하게는 수신된 방송신호를 스마트 카드(Smart Card)를 통해 디스크램블(Descramble)하여 사용자에게 제공하는 방송수신장치 및 그의 보안방법에 관한 것이다.The present invention relates to a broadcast receiving apparatus and a security method thereof, and more particularly, to a broadcast receiving apparatus and a security method thereof which descrambles a received broadcast signal through a smart card and provides the same to a user. will be.

일반적으로, 유료채널(Pay Per Channel)이나 유료시청(Play Per View)의 경우, 방송국에서는 방송프로그램 및 서비스 데이터 등이 포함된 방송신호를 스크램블(Scramble)하여 송신한다. 그러면, 방송수신장치는 방송국에서 송신되는 방송신호를 수신한 후, 스마트 카드를 통해 디스크램블(Descramble)하여, 사용자에게 제공한다. 여기서, 스마트카드에는 해당 가입자가 유료채널을 신청하였는지 유료시청을 신청하였는지의 여부에 따라, 시청 가능한 채널정보 혹은 시청 가능한 사용량 정보가 저장되며, 방송수신장치는 이러한 정보를 이용하여 디스크램블을 수행하게 된다.In general, in the case of Pay Per Channel or Play Per View, a broadcasting station scrambles and transmits a broadcast signal including a broadcast program and service data. Then, after receiving the broadcast signal transmitted from the broadcasting station, the broadcast receiving device descrambles the smart card to provide it to the user. Here, the smart card stores the viewable channel information or viewable usage information according to whether the subscriber subscribes to the paid channel or the paid viewing, and the broadcast receiving device uses the information to perform descramble. do.

이러한 방송수신장치는 디스크램블된 방송신호를 텔레비전과 같은 영상표시장치로 전송할 수도 있으며, 사용자는 방송국에서 제공하는 방송서비스를 텔레비전을 통해 영상으로 제공받을 수 있게 된다. 최근 들어 HD(High Definition)방송이 보편화되면서, 방송수신장치는 HDMI(High Definition Multimedia Interface)를 통해, 고해상도의 영상을 텔레비전에 전송할 수 있게 되었다.The broadcast receiving apparatus may transmit the descrambled broadcast signal to an image display apparatus such as a television, and the user may receive a broadcast service provided by a broadcasting station as an image through a television. In recent years, as high definition (HD) broadcasting has become popular, a broadcast receiving apparatus can transmit a high resolution image to a television through a high definition multimedia interface (HDMI).

HDMI는 디지털 비디오신호 및 디지털 오디오신호를 압축하지 않고, 1개의 HDMI 케이블로 전송가능한 차세대 인터페이스다. 또한, 음성신호의 경우는 다채 널(5.1채널)전송이 가능하며, HDCP(High-bandwidth Digital Content Protection)기능을 제공한다. HDCP는 HD영상을 재생하는데 필요한 암호화 기술로, HD컨텐츠 및 HD장치에 암호화 기술을 탑재한 후, 상호 인증을 거침으로써, 컨텐츠의 불법 복제를 방지하는 기술이다. 이러한 기능을 구비한 HDMI는 현재 출시되고 있는 A/V(Audio&Video)제품에 적용되고 있는 새로운 규격이며, 향후 거의 모든 A/V제품 및 소스장치에 채용될 것으로 보여진다.HDMI is a next-generation interface capable of transmitting digital video signals and digital audio signals with one HDMI cable. In addition, in case of voice signal, multi-channel (5.1 channel) transmission is possible and HDCP (High-bandwidth Digital Content Protection) function is provided. HDCP is an encryption technology required to play HD video. It is a technology that prevents illegal copying of content by installing encryption technology in HD content and HD devices and then performing mutual authentication. HDMI with this function is a new standard applied to the current A / V (Audio & Video) products, and is expected to be adopted in almost all A / V products and source devices in the future.

그러므로, 방송수신장치에 HDMI의 활용도를 높여, 사용자의 편의를 도모할 필요가 있다.Therefore, it is necessary to increase the utilization of HDMI in the broadcast receiving device and to facilitate the user's convenience.

따라서, 본 발명의 목적은 HDMI를 통해 연결된 장치들 간의 보안기능을 강화하고, 상호 간의 설정상태를 확인할 수 있도록 하는 방송수신장치 및 그의 보안방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a broadcast receiving apparatus and a security method thereof, which can enhance security functions between devices connected through HDMI and check setting states of each other.

상기 목적을 달성하기 위한 본 발명에 따른 방송수신장치는 인증용 카드를 이용하여, 수신된 방송신호를 디스크램블(Descramble)하는 해제부, 상기 인증용 카드의 아이디(Identification)를 추출한 후, 제품 정보와 조합하여 보안정보를 생성하는 제어부, 상기 보안정보가 기록되는 저장부, 및 상기 보안정보가 소정 외부장치에 저장되도록 상기 외부장치로 상기 보안정보를 전송하는 인터페이스부를 포함한다.The broadcast receiving apparatus according to the present invention for achieving the above object, using a card for authentication, a release unit for descrambled the received broadcast signal (Descramble), after extracting the identification (ID) of the authentication card, product information And a control unit for generating security information, a storage unit for recording the security information, and an interface unit for transmitting the security information to the external device so that the security information is stored in a predetermined external device.

여기서, 상기 인터페이스부는 HDMI(High Definition Multimedia Interface) 규격이 적용되고, 상기 인증용 카드는 스마트 카드(Smart Card)인 것을 특징으로 한다.Here, the interface unit is applied to the HDMI (High Definition Multimedia Interface) standard, the authentication card is characterized in that the smart card (Smart Card).

또한, 상기 제어부는 상기 인터페이스부를 통해 상기 외부장치로부터 전송된 보안정보를 상기 저장부에 기록된 보안정보와 비교하여, 상기 두 보안정보가 일치되는 경우, 상기 외부장치로 방송신호를 전송하는 것이 바람직하다.In addition, the control unit compares the security information transmitted from the external device through the interface unit with the security information recorded in the storage unit, and if the two security information is matched, it is preferable to transmit a broadcast signal to the external device. Do.

그리고, 상기 제품 정보는 제품의 일련번호인 것을 특징으로 한다.And, the product information is characterized in that the serial number of the product.

한편, 본 발명의 방송수신장치의 보안방법은 인증용 카드를 이용하여, 수신된 방송신호를 디스크램블(Descramble)하는 단계, 상기 인증용 카드의 아이디(Identification)를 추출한 후, 제품 정보와 조합하여 보안정보를 생성하는 단계, 상기 보안정보가 기록되는 단계, 및 상기 보안정보가 소정 외부장치에 저장되도록 상기 외부장치로 상기 보안정보를 전송하는 단계를 포함한다.On the other hand, the security method of the broadcast receiving apparatus of the present invention using the authentication card, descrambles the received broadcast signal (Descramble), extracts the identification (identification) of the authentication card, and then combined with the product information Generating security information, recording the security information, and transmitting the security information to the external device so that the security information is stored in a predetermined external device.

이하에서는 첨부된 도면들을 참조하여 본 발명의 일 실시예를 보다 상세하게 설명한다. 다만, 본 발명을 설명함에 있어서, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우, 그에 대한 상세한 설명은 축약하거나 생략한다.Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

도 1은 본 발명의 일 실시예에 따른 방송수신장치 및 이에 연결된 외부장치의 개략적인 구성을 나타낸 블럭도이다.1 is a block diagram showing a schematic configuration of a broadcast receiving device and an external device connected thereto according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 방송수신장치(100)는 영상표시장치(200)와 HDMI(High Definition Multimedia Interface)케이브을 통해 연결되며, 튜너부(110), 복조부(120), CAS(Conditional Access System)부(130), 카드부(140), 제1 신호처리부(150), 제1인터페이스부(160), 제1저장부(170), 제1조작부(180), 및 제1제어부(190)를 포함한다.Referring to FIG. 1, the broadcast receiving apparatus 100 of the present invention is connected to an image display apparatus 200 through an HDMI (High Definition Multimedia Interface) cable, and includes a tuner unit 110, a demodulator 120, and a CAS (Conditional). Access System) 130, the card unit 140, the first signal processing unit 150, the first interface unit 160, the first storage unit 170, the first control unit 180, and the first control unit ( 190).

튜너부(110)는 방송국(미도시)으로부터 전송되는 방송신호 중, 제1제어부(190)의 제어에 따라, 사용자가 선택한 방송채널에 대응되는 방송신호를 선국하여 수신한다.The tuner 110 tunes and receives a broadcast signal corresponding to a broadcast channel selected by a user according to the control of the first controller 190 among broadcast signals transmitted from a broadcast station (not shown).

복조부(120)는 수신된 방송신호를 복조(Demodulation)한 후, 복조된 방송신호의 오류를 정정한다.The demodulator 120 demodulates the received broadcast signal and corrects an error of the demodulated broadcast signal.

CAS부(130)는 카드부(140)에 장착된 스마트 카드(Smart Card)를 이용하여 복조부(120)에서 출력된 방송신호에 대해 사용자 인증 및 디스크램블(Descramble)을 수행한다.The CAS unit 130 performs user authentication and descramble on the broadcast signal output from the demodulator 120 using a smart card installed in the card unit 140.

제1신호처리부(150)는 CAS부(130)에서 디스크램블된 방송신호에 포함된 비디오신호, 오디오신호, 및 데이터신호를 원래의 형태로 복원하여, 스피커(미도시)나 표시부(미도시)를 통해 출력되도록 신호처리한다.The first signal processor 150 restores the video signal, the audio signal, and the data signal included in the broadcast signal descrambled by the CAS unit 130 to its original form, and thus, a speaker (not shown) or a display unit (not shown). Signal to be output through

제1조작부(180)에는 각종 조작키가 구비되어 있으며, 사용자는 제1조작부(180)를 조작하여, 방송수신장치(100)의 동작을 제어할 수 있게 된다.The first operation unit 180 is provided with various operation keys, and the user can operate the first operation unit 180 to control the operation of the broadcast receiving apparatus 100.

제1저장부(170)에는 방송수신장치(100)의 동작을 수행하는데 필요한 프로그램이 저장되며, 사용자에 의해 설정된 데이터가 저장된다. 또한, 방송수신장치(100)의 제조시, 방송수신장치(100)의 제품 일련번호가 저장된다. 그리고, 후술 되는 제1제어부(190)에서 생성된 페어링(Pairing)데이터가 저장되며, 이러한 페어링데이터가 저장되는 제1저장부(170)는 비휘발성 메모리이다.The first storage unit 170 stores a program necessary to perform the operation of the broadcast receiving apparatus 100, and stores data set by a user. In addition, during the manufacture of the broadcast receiving device 100, the product serial number of the broadcast receiving device 100 is stored. In addition, pairing data generated by the first controller 190 to be described below is stored, and the first storage unit 170 storing the pairing data is a nonvolatile memory.

제1제어부(190)는 방송신호를 수신하여, 신호처리하도록 튜너부(110), 복조부(120), CAS부(130), 및 제1신호처리부(150)를 제어한다. 또한, 제1제어부(190)는 카드부(140)에 스마트 카드가 장착되면, 스마트 카드에 저장된 스마트 카드의 고유 아이디(Identification)을 추출한다. 그리고, 제1제어부(190)는 스마트 카드의 아이디를 제1저장부(170)에 저장된 방송수신장치(100)의 제품 일련번호와 조합하여 페어링데이터를 생성한 후, 제1저장부(170)에 저장하고, 제1인터페이스부(160)를 통해 영상표시장치(200)로 페어링데이터를 전송한다.The first controller 190 controls the tuner 110, the demodulator 120, the CAS 130, and the first signal processor 150 to receive a broadcast signal and process the signal. In addition, when the smart card is mounted in the card unit 140, the first controller 190 extracts a unique identification of the smart card stored in the smart card. Then, the first controller 190 generates pairing data by combining the ID of the smart card with the product serial number of the broadcast receiving device 100 stored in the first storage unit 170, the first storage unit 170 And pairing data to the image display apparatus 200 through the first interface unit 160.

제1인터페이스부(160)에는 HDMI(High Definition Multimedia Interface)규격이 적용되며, 제1신호처리부(150)에서 신호처리된 비디오신호 및 오디오신호가 영상표시장치(200)로 전송된다. 또한, 제1인터페이스부(160)는 방송수신장치(100)의 파워 ON/OFF상태나 선택된 채널번호 등과 같은 방송수신장치(100)의 설정정보 및 제1제어부(190)가 생성한 페어링데이터를 영상표시장치(200)로 전송된다.The HDMI (High Definition Multimedia Interface) standard is applied to the first interface unit 160, and the video signal and the audio signal processed by the first signal processor 150 are transmitted to the image display device 200. In addition, the first interface unit 160 may display setting information of the broadcast receiving apparatus 100 such as power ON / OFF state of the broadcast receiving apparatus 100 or a selected channel number, and pairing data generated by the first controller 190. The image display apparatus 200 is transmitted.

한편, 방송수신장치(100)에 연결된 영상표시장치(200)는 제2인터페이스부(210), 제2신호처리부(220), 디스플레이부(230), 제2저장부(240), 제2조작부(250), 및 제2제어부(260)를 포함한다.Meanwhile, the image display device 200 connected to the broadcast receiving device 100 may include a second interface 210, a second signal processor 220, a display 230, a second storage 240, and a second manipulation unit. 250, and a second control unit 260.

제2인터페이스부(210)에도 HDMI(High Definition Multimedia Interface)규격이 적용되며, 방송수신장치(100)에서 전송되는 비디오신호 및 오디오신호를 수신한다. 또한, 제2인터페이스부(210)는 방송수신장치(100)의 설정정보 및 페어링데이터를 수신하며, 영상표시장치(200)의 파워 ON/OFF상태나 볼륨 등과 같은 영상표시장치(200)의 설정정보를 방송수신장치(100)에 전송한다.HDMI (High Definition Multimedia Interface) standard is also applied to the second interface unit 210, and receives the video signal and the audio signal transmitted from the broadcast receiving device 100. In addition, the second interface unit 210 receives setting information and pairing data of the broadcast receiving device 100 and sets the image display device 200 such as power ON / OFF state or volume of the image display device 200. The information is transmitted to the broadcast receiving device 100.

제2신호처리부(220)는 제2인터페이스부(210)를 통해 수신된 비디오신호를 디스플레이부(230)에서 표시가능하도록 신호처리하고, 제2인터페이스부(210)를 통해 수신된 오디오신호를 스피커에서 출력가능하도록 신호처리한다.The second signal processing unit 220 processes the video signal received through the second interface unit 210 so that the display unit 230 can display the audio signal received through the second interface unit 210 and the speaker. Signal processing to enable output from

제2저장부(240)에는 영상표시장치(200)의 동작을 수행하는데 필요한 프로그램이 저장되며, 사용자에 의해 설정된 데이터가 저장된다. 그리고, 제2인터페이스부(210)를 통해 수신된 페어링(Pairing)데이터가 저장되며, 이러한 페어링데이터가 저장되는 제2저장부(240)는 비휘발성 메모리이다.The second storage unit 240 stores a program necessary to perform the operation of the image display apparatus 200 and stores data set by a user. The pairing data received through the second interface unit 210 is stored, and the second storage unit 240 storing the pairing data is a nonvolatile memory.

제2조작부(250)에는 각종 조작키가 구비되어 있으며, 사용자는 제2조작부(250)를 조작하여, 방송수신장치(100)의 동작을 제어할 수 있게 된다.The second operation unit 250 is provided with various operation keys, and the user can operate the second operation unit 250 to control the operation of the broadcast receiving apparatus 100.

제2제어부(260)는 제2인터페이스부(210)를 통해 수신된 비디오신호 및 오디오신호가 출력되도록 제2신호처리부(220) 및 디스플레이부(230)를 제어한다. 또한, 제2제어부(260)는 제2인터페이스부(210)를 통해 수신된 페어링데이터를 제2저장부(240)에 저장한다.The second controller 260 controls the second signal processor 220 and the display 230 to output the video signal and the audio signal received through the second interface 210. In addition, the second controller 260 stores the pairing data received through the second interface unit 210 in the second storage unit 240.

방송수신장치(100)는 HDMI를 통해 페어링데이터가 영상표시장치(200)로부터 전송되면, 이를 제1저장부(170)에 저장된 페어링데이터와 비교하여, 두 개의 페어링데이터가 일치되는 경우, 영상표시장치(200)와 신호를 송수신할 수 있게 된다. 이러한 페어링데이터는 보안정보로의 역할을 수행하여, 두 개의 페어링데이터가 일치되지 않는 경우, 데이터를 송수신할 수 없게 되어, 사용자가 방송국에서 제공하는 컨텐츠를 이용할 수 없도록 만든다.When the pairing data is transmitted from the video display device 200 through HDMI, the broadcast receiving device 100 compares the pairing data stored in the first storage unit 170 and displays the video when the two pairing data match. It is possible to transmit and receive signals with the device 200. The pairing data serves as security information, and when the two pairing data do not match, the pairing data cannot be transmitted or received, so that the user cannot use the contents provided by the broadcasting station.

또한, 방송수신장치(100)는 HDMI를 통해 영상표시장치(200)의 설정정보가 수 신되면, 이를 통해 영상표시장치(200)의 설정상태를 확인할 수 있게 된다.In addition, when the broadcast receiving device 100 receives the setting information of the video display device 200 through the HDMI, it is possible to check the setting state of the video display device 200 through this.

도 2는 본 발명의 일 실시예에 따른 방송수신장치의 활용방법을 설명하기 위한 흐름도이다.2 is a flowchart illustrating a method of using a broadcast receiving apparatus according to an embodiment of the present invention.

도 2에 따르면, 먼저, 스마트 카드가 카드부(140)에 장착되면(S300), 제1제어부(190)가 스마트 카드의 아이디와 방송수신장치(100)의 제품 일련번호를 조합하여 페어링데이터를 생성한다(S310). 그리고, 제1제어부(190)는 생성된 페어링데이터를 비휘발성 메모리인 제1저장부(170)에 저장한다(S320).According to FIG. 2, first, when the smart card is mounted in the card unit 140 (S300), the first controller 190 combines the ID of the smart card with the product serial number of the broadcast receiving device 100 to obtain pairing data. It generates (S310). In operation S320, the first controller 190 stores the generated pairing data in the first storage unit 170, which is a nonvolatile memory.

여기서, 방송수신장치(100)에 외부장치인 영상표시장치(200)가 연결되면(S330), 제1제어부(190)는 I2C라인을 통해 영상표시장치(200)로 페어링데이터를 전송한다(S340). 여기서, 제1인터페이스부(160)와 제2인터페이스부(210)는 HDMI규격이 적용된 HDMI케이블이 연결되며, HDMI케이블의 I2C라인(SDA,SCL)을 통해 페어링데이터를 전송한다.Here, when the image display device 200 which is an external device is connected to the broadcast receiving device 100 (S330), the first controller 190 transmits pairing data to the image display device 200 through the I2C line (S340). ). Here, the first interface unit 160 and the second interface unit 210 are connected to the HDMI cable is applied to the HDMI standard, and transmits the pairing data through the I2C line (SDA, SCL) of the HDMI cable.

그리고, 페어링데이터를 영상표시장치(200)의 비휘발성 메모리인 제2저장부(240)에 저장한다(S350).The pairing data is stored in the second storage unit 240 which is a nonvolatile memory of the image display apparatus 200 (S350).

이상과 같은 과정에 의해 제1저장부(170) 및 제2저장부(240)에 페어링데이터가 저장되면, 방송수신장치(100)는 두 개의 페어링데이터를 비교하여, 영상표시장치(200)와의 신호 송수신 여부를 결정하게 된다. 반대로, 영상표시장치(200)가 HDMI를 통해 방송수신장치(100)로부터 페어링데이터가 수신되면, 이를 제2저장부(240)에 저장된 페어링데이터와 비교하여, 방송수신장치(100)와의 신호 송수신 여부를 결정할 수도 있다.When pairing data is stored in the first storage unit 170 and the second storage unit 240 by the above-described process, the broadcast receiving device 100 compares the two pairing data with the image display device 200. It is determined whether the signal is transmitted or received. On the contrary, when pairing data is received from the broadcast receiving device 100 through the HDMI, the image display device 200 compares the pairing data stored in the second storage unit 240 and transmits and receives a signal with the broadcast receiving device 100. You can also decide whether or not.

이상의 일 실시예에서는 스마트 카드 및 제품의 일련번호로 페어링데이터를 생성하는 것으로 예를 들었으나, 스마트 카드가 아닌 다른 인증용 카드 및 제품의 일련번호 외의 제품 정보를 이용하여 페어링데이터를 생성할 수도 있다.In the above embodiment, for example, the pairing data is generated by the serial numbers of the smart card and the product. However, the pairing data may be generated using product information other than the serial number of the authentication card and the product other than the smart card. .

이상 설명한 바와 같이 본 발명에 따르면, HDMI를 통해 보안정보를 교환하여 도난에 대비하고, 상호 간의 설정상태를 교환하여, 간단한 폐색 망(Closed network)을 구성할 수 있게 된다.As described above, according to the present invention, it is possible to configure a simple closed network by exchanging security information through HDMI to prepare for theft, and by exchanging a setting state of each other.

또한, 이상에서는 본 발명의 바람직한 실시 예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Anyone of ordinary skill in the art that various modifications can be made, as well as such changes are within the scope of the claims.

Claims (5)

인증용 카드를 이용하여, 수신된 방송신호를 디스크램블(Descramble)하는 해제부;A canceling unit for descrambles the received broadcast signal using an authentication card; 상기 인증용 카드의 아이디(Identification)를 추출한 후, 제품 정보와 조합하여 보안정보를 생성하는 제어부;A control unit for extracting an identification of the authentication card and generating security information in combination with product information; 상기 보안정보가 기록되는 저장부; 및A storage unit in which the security information is recorded; And 상기 보안정보가 소정 외부장치에 저장되도록 상기 외부장치로 상기 보안정보를 전송하는 인터페이스부;를 포함하는 것을 특징으로 하는 방송수신장치.And an interface unit for transmitting the security information to the external device so that the security information is stored in a predetermined external device. 제1항에 있어서,The method of claim 1, 상기 인터페이스부는,The interface unit, HDMI(High Definition Multimedia Interface)규격이 적용되고,HDMI (High Definition Multimedia Interface) standard is applied, 상기 인증용 카드는,The authentication card, 스마트 카드(Smart Card)인 것을 특징으로 하는 방송수신장치.Broadcast receiving device, characterized in that a smart card (Smart Card). 제1항에 있어서,The method of claim 1, 상기 제어부는,The control unit, 상기 인터페이스부를 통해 상기 외부장치로부터 전송된 보안정보를 상기 저장부에 기록된 보안정보와 비교하여, 상기 두 보안정보가 일치되는 경우, 상기 외 부장치로 방송신호를 전송하는 것을 특징으로 하는 방송수신장치.Broadcasting reception, characterized in that for comparing the security information transmitted from the external device through the interface unit with the security information recorded in the storage unit, when the two security information is matched, the broadcast signal is transmitted to the external device Device. 제1항에 있어서,The method of claim 1, 상기 제품 정보는 제품의 일련번호인 것을 특징으로 하는 방송수신장치.The product information is a broadcast receiving device, characterized in that the serial number of the product. 인증용 카드를 이용하여, 수신된 방송신호를 디스크램블(Descramble)하는 단계;Descrambles the received broadcast signal using an authentication card; 상기 인증용 카드의 아이디(Identification)를 추출한 후, 제품 정보와 조합하여 보안정보를 생성하는 단계;Extracting an identification of the authentication card and generating security information in combination with product information; 상기 보안정보가 기록되는 단계; 및Recording the security information; And 상기 보안정보가 소정 외부장치에 저장되도록 상기 외부장치로 상기 보안정보를 전송하는 단계;를 포함하는 것을 특징으로 하는 보안방법.And transmitting the security information to the external device so that the security information is stored in a predetermined external device.
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