KR950005049A - Smart Card Automatic Selection in D / D2-MAC System - Google Patents

Smart Card Automatic Selection in D / D2-MAC System Download PDF

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Publication number
KR950005049A
KR950005049A KR1019930013639A KR930013639A KR950005049A KR 950005049 A KR950005049 A KR 950005049A KR 1019930013639 A KR1019930013639 A KR 1019930013639A KR 930013639 A KR930013639 A KR 930013639A KR 950005049 A KR950005049 A KR 950005049A
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KR
South Korea
Prior art keywords
smart card
key data
control word
returned
mac
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KR1019930013639A
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Korean (ko)
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KR970002703B1 (en
Inventor
서진우
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배순훈
대우전자 주식회사
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Priority to KR1019930013639A priority Critical patent/KR970002703B1/en
Publication of KR950005049A publication Critical patent/KR950005049A/en
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Publication of KR970002703B1 publication Critical patent/KR970002703B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

본 발명은 D/D2-MAC 방송방식의 암호화키데이터를 갖춘 제1 및 제 2 스마트카드에 대한 수납유니트를 갖추어 각 방송방식에 대한 방송신호의 수신이 가능하도록 된 D/D2-MAC시스템에서, 제1 및 제 2 스마트카드(10a)가 각 스마트카드 수납유니트(20a,20b)에 장착된 상태에서 수신되는 방송신호에 포함된 암호화키 데이터를 각 스마트카드(10a,10b)에 순차전송하여 수신되는 방송방식에 적합한 스마트카드를 선택하는 단계와; 하나의 스마트카드로부터 암호화체계의 동일성을 나타내는 제어워드의 입력시 그 제어워드를 이용하여 방송신호의 해독을 수행하는 단계로 구성된 D/D2-MAC시스템에서의 스마트카드 자동선택방법을 제공하는 것이다.The present invention provides a D / D2-MAC system in which receiving units for the first and second smart cards having encryption key data of the D / D2-MAC broadcasting method are provided so that broadcast signals for each broadcasting method can be received. The encryption key data included in the broadcast signal received while the first and second smart cards 10a are mounted on the smart card storage units 20a and 20b are sequentially transmitted to the smart cards 10a and 10b. Selecting a smart card suitable for a broadcasting method; The smart card automatic selection method of the D / D2-MAC system comprising the step of performing the decoding of the broadcast signal using the control word when inputting a control word indicating the identity of the encryption scheme from one smart card.

Description

D/D2-MAC시스템에서의 스마트카드 자동선택방법Smart Card Automatic Selection in D / D2-MAC System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 본 발명에 따른 D/D2-MAC시스템에서의 스마트카드 자동선택방법의 설명에 적용되는 장치의 블록구성도, 제 2 도는 본 발명에 따른 D/D2-MAC시스템에서의 스마트카드 자동선택방법을 설명하는 플로우챠트, 제 3 도는 제 2 도의 스마트카드 선택단계에서 디코더 처리동작을 설명하는 플로우챠트.1 is a block diagram of a device applied to the description of the smart card automatic selection method in the D / D2-MAC system according to the present invention, Figure 2 is a smart card automatic selection in the D / D2-MAC system according to the present invention Flow chart for explaining the method, FIG. 3 is a flowchart for explaining a decoder processing operation in the smart card selection step of FIG.

Claims (4)

D/D2-MAC 방송방식의 암호화키데이터를 갖춘 제1 및 제 2 스마트카드에 대한 수납유니트를 갖추어 각 방송방식에 대한 방송신호의 수신이 가능하도록 된 D/D2-MAC시스템에 있어서, 스마트카드가 각 스마트카드 수납유니트에 장착된 상태에서 수신되는 방송신호에 포함된 암호화키데이터를 각 스마트카드에 순차전송하며 수신되는 방송방식에 적합한 스마트카드를 선택하는 단계; 하나의 스마트카드로부터 암호화체계의 동일성을 나타내는 제어워드의 입력시 그 제어워드를 이용하여 암호해독을 수행하는 단계로 구성된 것을 특징으로 하는 D/D2-MAC시스템에서의 스마트카드 자동선택방법.A smart card in a D / D2-MAC system in which storage units for the first and second smart cards with encryption key data of the D / D2-MAC broadcasting system are provided so that broadcast signals for each broadcasting system can be received. Selecting a smart card suitable for the received broadcast method by sequentially transmitting encryption key data included in a broadcast signal received in a state mounted in each smart card storage unit to each smart card; A smart card automatic selection method in a D / D2-MAC system, characterized in that the decryption is performed using the control word when the control word indicating the identity of the encryption system is input from one smart card. 제 1 항에 있어서, 스마트카드 선택단계는 제1 및 제 2 스마트카드에 방송신호에서 검출된 키데이터를 순차전송하여 제어워드가 회송되는 스마트카드를 수신하고 방송방식의 스마트카드로서 판별하는 디코더 처리단계와; 전송되는 키데이터를 수취하여 자신의 암호화체계와 동일성여부를 판단하여 동일하면 제어워드를 회송하고 다르면 에러신호를 전송하는 스마트카드 처리단계로 구성된 것을 특징으로 하는 D/D2-MAC시스템에서의 스마트카드 자동선택방법.2. The decoder of claim 1, wherein the smart card selection step sequentially transmits key data detected in the broadcast signal to the first and second smart cards to receive the smart card to which the control word is returned and to discriminate it as a broadcast smart card. Steps; Smart card in the D / D2-MAC system, comprising a smart card processing step of receiving the transmitted key data and judging whether it is identical with its own encryption scheme, if it is identical, sending a control word and transmitting an error signal if it is different. Auto selection method. 제 2 항에 있어서, 상기 디코더 처리단계는 방송신호에서 검출된 키데이터를 제 1 스마트카드에 전송하고, 제 1 스마트카드로부터의 제어워드의 회송여부를 판단하며 제어워드의 회송시에는 암호해독처리를 수행하는 반면 에러 신호가 회송되면 상기 키데이터를 제 2 스마트카드에 전송하며, 그 제 2 스마트카드로부터 제어워드가 회송되면 제 2 스마트카드에 의한 암호화체계의 해독을 수행하는 반면 에러 신호가 회송되면 여러표시를 한 다음 디코처 처리단계를 반복수행하고, 그 반복수행회수가 소정회수(3회)에 도달하면 에러 표시를 하여 수동 스마트카드 선택단계로 이행하는 단계로 구성된 것을 특징으로 하는 D/D2-MAC시스템에서의 스마트카드 자동선택방법.The method of claim 2, wherein the decoder processing step transmits the key data detected in the broadcast signal to the first smart card, determines whether to transmit the control word from the first smart card, and decrypts the encrypted word when the control word is returned. When the error signal is returned, the key data is transmitted to the second smart card. When the control word is returned from the second smart card, the decryption of the encryption scheme by the second smart card is performed while the error signal is returned. If a plurality of displays are displayed and then the decoder processing step is repeatedly performed, and if the number of repeated executions reaches a predetermined number of times (3 times), an error indication is displayed and the process shifts to the manual smart card selection step. Smart card automatic selection in D2-MAC system. 제 2 항에 있어서, 상기 스마트카드 처리단계는 상기 디코더 처리단계에서 키데이터가 입력되는지 여부를 판단하고, 그 키데이터를 분석하며 자신의 암호체계와의 동일성 여부를 판단하며, 그 판단결과로서 동일하면 제어워드를 회송하는 반면 다르면 에러신호를 전송하는 단계로 구성된 것을 특징으로 하는 D/D2-MAC시스템에서의 스마트카드 자동선택방법.The method of claim 2, wherein the smart card processing step determines whether key data is input in the decoder processing step, analyzes the key data, determines whether or not it is identical to its own encryption system, and determines the same as the determination result. When the control word is returned, if different, the step of transmitting an error signal, smart card automatic selection method in the D / D2-MAC system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930013639A 1993-07-20 1993-07-20 Method of automatic selection of smart cards in d/d2-mac system KR970002703B1 (en)

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KR1019930013639A KR970002703B1 (en) 1993-07-20 1993-07-20 Method of automatic selection of smart cards in d/d2-mac system

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KR1019930013639A KR970002703B1 (en) 1993-07-20 1993-07-20 Method of automatic selection of smart cards in d/d2-mac system

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KR970002703B1 KR970002703B1 (en) 1997-03-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862428A (en) * 1996-09-02 1999-01-19 An; Sung-Kyun Apparatus for detachably mounting a lens filter onto a camera
KR100480688B1 (en) * 1997-09-02 2005-05-16 엘지전자 주식회사 Apparatus and method for receiving satellite broadcating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862428A (en) * 1996-09-02 1999-01-19 An; Sung-Kyun Apparatus for detachably mounting a lens filter onto a camera
KR100480688B1 (en) * 1997-09-02 2005-05-16 엘지전자 주식회사 Apparatus and method for receiving satellite broadcating

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