KR101143192B1 - 랜덤화된 신호 변환 및 적용을 제공하는 방법 - Google Patents
랜덤화된 신호 변환 및 적용을 제공하는 방법 Download PDFInfo
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- KR101143192B1 KR101143192B1 KR1020050026352A KR20050026352A KR101143192B1 KR 101143192 B1 KR101143192 B1 KR 101143192B1 KR 1020050026352 A KR1020050026352 A KR 1020050026352A KR 20050026352 A KR20050026352 A KR 20050026352A KR 101143192 B1 KR101143192 B1 KR 101143192B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
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Abstract
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Claims (32)
- 컴퓨팅 장치에 의해, 기저 함수(basis function)들의 복수의 집합을 생성하는 단계 - 각각의 기저 함수들의 집합은 랜드레트 변환(randlet transform)을 포함하고, 상기 기저 함수들의 복수의 집합은 스텝마더 랜드레트(step-mother randlet)들의 라이브러리에 기초하여 생성되고, 상기 스텝마더 랜드레트는 마더 랜드레트로부터 순차적으로 생성된 것임 -;상기 컴퓨팅 장치에 의해, 상기 생성된 기저 함수들의 복수의 집합 중에서 적어도 하나의 기저 함수들의 집합을 비밀 키에 기초하여 랜덤하게 선택하는 단계 - 상기 비밀 키는 의사-랜덤 넘버 생성기(pseudo-random number generator)를 씨드(seed)하여 랜덤 넘버를 생성하는 데 사용되고, 상기 랜덤 넘버는 상기 적어도 하나의 기저 함수들의 집합을 랜덤하게 선택하는 데 사용됨 -;상기 컴퓨팅 장치에 의해, 상기 랜덤하게 선택된 기저 함수들의 집합을 신호에 적용하는 단계; 및상기 적용하는 단계에 응답하여, 상기 컴퓨팅 장치에 의해, 상기 적용하는 단계로부터 도출된 상기 신호를 출력하는 단계 - 이 단계로 인해 상기 출력된 신호는 랜덤화된 신호 변환의 적용을 하게 함 -를 포함하는 방법.
- 제1항에 있어서,상기 기저 함수들은 2차원 및 3차원 함수들을 포함하는 그룹의 하나 이상의 항목으로부터 선택되는 함수들의 집합으로부터 생성되는 방법.
- 명령어들이 저장된 하나 이상의 비일시적 컴퓨터 저장 매체로서,상기 명령어들은 실행될 때에, 기계로 하여금,기저 함수들의 복수의 집합을 생성하는 동작 - 각각의 기저 함수들의 집합은 랜드레트 변환을 포함하고, 상기 기저 함수들의 복수의 집합은 스텝마더 랜드레트들의 라이브러리에 기초하여 생성되고, 상기 스텝마더 랜드레트는 마더 랜드레트로부터 순차적으로 생성된 것임 -;상기 생성된 기저 함수들의 복수의 집합 중에서 적어도 하나의 기저 함수들의 집합을 비밀 키에 기초하여 랜덤하게 선택하는 동작 - 상기 비밀 키는 의사-랜덤 넘버 생성기를 씨드하여 랜덤 넘버를 생성하는 데 사용되고, 상기 랜덤 넘버는 상기 적어도 하나의 기저 함수들의 집합을 랜덤하게 선택하는 데 사용됨 -;상기 랜덤하게 선택된 기저 함수들의 집합을 신호에 적용하는 동작; 및상기 적용하는 동작에 응답하여, 상기 적용하는 동작으로부터 도출된 상기 신호를 출력하는 동작 - 이 동작으로 인해 상기 출력된 신호는 랜덤화된 신호 변환의 적용을 하게 함 -을 포함하는 동작들을 수행하게 하는, 하나 이상의 비일시적 컴퓨터 저장 매체.
- 제3항에 있어서,상기 기저 함수들은 2차원 및 3차원 함수들을 포함하는 그룹의 하나 이상의 항목으로부터 선택되는 함수들의 집합으로부터 생성되는 하나 이상의 비일시적 컴퓨터 저장 매체.
- 제1항에 있어서,상기 신호를 압축하는 단계를 더 포함하고,상기 랜덤화된 신호 변환의 적용은 압축, 노이즈 감소(denoising), 해싱, 식별, 인증, 및 워터마킹 중 적어도 하나를 포함하는, 방법.
- 제1항에 있어서,상기 생성하는 단계는 상기 복수의 기저 함수들의 집합의 일부로서 생성하기 위해 상기 기저 함수들의 집합의 카디낼리티(cardinality)를 랜덤하게 선택하는 단계를 포함하는, 방법.
- 제1항에 있어서,상기 적용하는 단계는 상기 랜덤하게 선택된 기저 함수들의 집합을 이산 변환으로서 신호에 적용하는 것에 의해 특징지워지는, 방법.
- 신호를 변환하는 방법으로서,컴퓨팅 장치에 의해, 기저 함수들의 복수의 집합을 생성하는 단계 - 각각의 기저 함수들의 집합은 랜드레트 변환을 포함하고, 상기 생성하는 단계는 상기 기저 함수들의 복수의 집합의 일부로서 생성하기 위해 상기 기저 함수들의 집합의 카디낼리티를 랜덤하게 선택하는 단계를 포함하고, 상기 기저 함수들의 복수의 집합은 스텝마더 랜드레트들의 라이브러리에 기초하여 생성되고, 상기 스텝마더 랜드레트는 마더 랜드레트로부터 순차적으로 생성된 것임 -;상기 컴퓨팅 장치에 의해, 상기 생성된 기저 함수들의 복수의 집합 중에서 적어도 하나의 기저 함수들의 집합을 비밀 키에 기초하여 랜덤하게 선택하는 단계 - 상기 비밀 키는 의사-랜덤 넘버 생성기를 씨드하여 랜덤 넘버를 생성하는 데 사용되고, 상기 랜덤 넘버는 상기 적어도 하나의 기저 함수들의 집합을 랜덤하게 선택하는 데 사용됨 -;상기 컴퓨팅 장치에 의해, 상기 랜덤하게 선택된 기저 함수들의 집합을 신호에 적용하는 단계 - 상기 적용하는 단계는 상기 랜덤하게 선택된 기저 함수들의 집합을 이산 변환으로서 신호에 적용하는 것에 의해 특징지워짐 -; 및상기 적용하는 단계에 응답하여, 상기 컴퓨팅 장치에 의해, 상기 적용하는 단계로부터 도출된 상기 신호를 출력하는 단계 - 이 단계로 인해 상기 출력된 신호는 랜덤화된 신호 변환의 적용을 하게 하고, 이 단계는 압축, 노이즈 감소, 해싱, 식별, 인증, 데이터 내장 및 워터마킹을 포함함 -를 포함하는 방법.
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US10/837,563 | 2004-04-30 | ||
US10/837,563 US7770014B2 (en) | 2004-04-30 | 2004-04-30 | Randomized signal transforms and their applications |
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KR20060044980A KR20060044980A (ko) | 2006-05-16 |
KR101143192B1 true KR101143192B1 (ko) | 2012-05-18 |
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US (2) | US7770014B2 (ko) |
EP (1) | EP1596599A3 (ko) |
JP (1) | JP4921722B2 (ko) |
KR (1) | KR101143192B1 (ko) |
CN (1) | CN1694400B (ko) |
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CN1694400B (zh) | 2012-01-04 |
JP2005346041A (ja) | 2005-12-15 |
US8595276B2 (en) | 2013-11-26 |
US7770014B2 (en) | 2010-08-03 |
EP1596599A3 (en) | 2010-06-23 |
EP1596599A2 (en) | 2005-11-16 |
US20050257060A1 (en) | 2005-11-17 |
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