KR910011052A - Scrambling System by Line Segment Conversion Method - Google Patents

Scrambling System by Line Segment Conversion Method Download PDF

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Publication number
KR910011052A
KR910011052A KR1019890017247A KR890017247A KR910011052A KR 910011052 A KR910011052 A KR 910011052A KR 1019890017247 A KR1019890017247 A KR 1019890017247A KR 890017247 A KR890017247 A KR 890017247A KR 910011052 A KR910011052 A KR 910011052A
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KR
South Korea
Prior art keywords
data
address
generator
cvs
scrambling system
Prior art date
Application number
KR1019890017247A
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Korean (ko)
Other versions
KR920009074B1 (en
Inventor
강경진
Original Assignee
이헌조
주식회사 금성사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to KR1019890017247A priority Critical patent/KR920009074B1/en
Publication of KR910011052A publication Critical patent/KR910011052A/en
Application granted granted Critical
Publication of KR920009074B1 publication Critical patent/KR920009074B1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems

Abstract

내용 없음No content

Description

라인 세그머트 변환 방식에 의한 스크램블링 시스템Scrambling System by Line Segment Conversion Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명 라인 세크먼트 변환 방식에 의한 스크램블링 시스템의 전체 구성도.3 is an overall configuration diagram of a scrambling system according to the present invention line segment conversion method.

제4도는 제3도에서 어드레스 발생기(13)에 대한 상세 회로도.4 is a detailed circuit diagram of the address generator 13 in FIG.

제5도는 제3도에서 랜덤번호 발생기(12)를 N비트로 하였을때 어드레스발생기(13)의 구성도.5 is a configuration diagram of the address generator 13 when the random number generator 12 has N bits in FIG.

Claims (2)

A/D 변환기(1)를 통한 합성영상신호(CVS)를 저장하는 라인 메모리(2,3)와 이를 D/A변환하는 D/A변환기(6)와, 상기 합성영상신호(CVS)에서 수직 및 수평동기(Vsync, Hsync)를 분리하는 동기분리기(4)와, 상기 동기분리기(4)에서 출력되는 수평동기(Hsync)를 이용하여 샘플링 클럭을 생성시키는 클럭발생기(5)와, 상기 합성영상신호(CVS)의 VBI구간에 실리는 데이타를 추출하여 데이타램(8)에 저장하는 데이타 슬라이서(7)와, 상기 데이타램(8)에 저장된 데이타를 디코딩하여 상기 라인메모리(2,3)에 어드레스를 제공하도록 초기 데이타를 출력하는 마이크로 프로세서(9)로 구성된 스크램블링 시스템에 있어서, 상기 마이크로 프로세서(9)로부터 초기데이타를 입력하여 불규칙한 번호를 출력하는 렘덤변호 발생기(12)와, 상기 랜덤번호 발생기(12)로부터 불규칙한 번호를 입력하고 카운터(14)로부터 어드레스(A9,A8)를 입력하여 상기 라인메모리(2,3)에 새로운 어드레스(A9', A8')를 제공하는 어드레스 발생기(13)와, 상기 라인메모리(2,3)에 어드레스(A0-A7)를 제공하는 카운터(14)로 구성된 것을 특징으로 하는 라인 세그먼트 변환방식에 의한 스크램블링 시스템.A line memory (2, 3) for storing the composite video signal (CVS) through the A / D converter (1), a D / A converter (6) for D / A conversion, and vertical in the composite video signal (CVS) And a clock generator 5 for generating a sampling clock using the horizontal sync Hsync output from the sync separator 4, and a sync generator 4 for separating horizontal sync Vsync and Hsync. A data slicer 7 which extracts data stored in the VBI section of the signal CVS and stores the data in the data RAM 8, and decodes the data stored in the data RAM 8 to the line memories 2 and 3; A scrambling system comprising a microprocessor (9) for outputting initial data to provide an address, comprising: a random number generator (12) for inputting initial data from the microprocessor (9) and outputting an irregular number; Enter an irregular number from 12 An address generator 13 which inputs addresses A9 and A8 from the counter 14 to provide new addresses A9 'and A8' to the line memories 2 and 3, and the line memories 2 and 3; And a counter (14) for providing an address (A0-A7) to the scrambling system according to the line segment conversion method. 제1항에 있어서, 출력 어드레스에 의한 논리식으로 생성하고, 출력어드레스에 의한 논리식으로 생성하도록 어드레스 발생기(13)을 구성함을 특징으로 하는 라인 세크먼티 변화방식에 의한 스크램블링 시스템.The device of claim 1, wherein the output address Generate by logical expression by using and output address And the address generator (13) is configured to generate in a logical manner. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890017247A 1989-11-27 1989-11-27 Scrambling system KR920009074B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890017247A KR920009074B1 (en) 1989-11-27 1989-11-27 Scrambling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890017247A KR920009074B1 (en) 1989-11-27 1989-11-27 Scrambling system

Publications (2)

Publication Number Publication Date
KR910011052A true KR910011052A (en) 1991-06-29
KR920009074B1 KR920009074B1 (en) 1992-10-13

Family

ID=19292110

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890017247A KR920009074B1 (en) 1989-11-27 1989-11-27 Scrambling system

Country Status (1)

Country Link
KR (1) KR920009074B1 (en)

Also Published As

Publication number Publication date
KR920009074B1 (en) 1992-10-13

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