KR102192631B1 - 병렬 포렌식 마킹 장치 및 방법 - Google Patents
병렬 포렌식 마킹 장치 및 방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 포렌식 마킹 장치를 나타낸 블록도이다.
도 3은 파싱 유니트의 동작을 나타낸 개략도이다.
도 4는 본 발명의 포렌식 마킹 장치의 동작을 나타낸 개략도이다.
도 5는 본 발명의 포렌식 마킹 방법을 나타낸 흐름도이다.
도 6은 본 발명의 병렬 포렌식 마킹 장치에 의해 복수 영역으로 분할된 프레임을 나타낸 개략도이다.
도 7은 본 발명의 병렬 포렌식 마킹 장치를 나타낸 개략도이다.
도 8은 본 발명의 실시예에 따른, 컴퓨팅 장치를 나타내는 도면이다.
13...역움직임 추정 수단 14...역 인트라/인터 예측 수단
15...인트라/인터 예측 수단 16...움직임 추정 수단
17...변환 수단 18...양자화 수단
50...콘텐츠 서버 70...포렌식 서버
90...단말기 100...포렌식 마킹 서버
110...제1 유니트 111, 112, 113, 114...디코딩부
121, 122, 123, 124...인코딩부
120...제2 유니트 130...마킹 유니트
139...저장부 150...변환 유니트
151...제1 변환부 152...제2 변환부
160...동기화부 170...파싱 유니트
180...분할부 200...통신 모듈
1000...고속화 부재
Claims (9)
- 설정 방식으로 압축된 콘텐츠의 한 프레임을 복수 영역으로 분할하는 분할부;
분할된 각 영역을 할당받아 엔트로피 디코딩하는 복수의 디코딩부;
복수의 상기 디코딩부에 입출력되는 각 영역을 동기화시켜 상기 프레임을 완성시키는 동기화부;
를 포함하는 포렌식 마킹 장치.
- 제1항에 있어서,
상기 설정 방식으로 압축된 콘텐츠는 RAW 콘텐츠가 CTU(Coding Tree Unit) 사이즈와 타일(tile) 사이즈를 파라미터로 하여 타일 방식으로 인코딩된 것이고,
상기 분할부는 상기 타일 방식에 따라 상기 프레임을 복수 영역으로 분할하며,
복수의 디코딩부는 분할된 영역을 서로 독립적으로 엔트로피 디코딩하는 포렌식 마킹 장치.
- 제1항에 있어서,
상기 설정 방식은 HEVC(High Efficiency Video Codec)이고,
각 영역에 포함된 CU(Coding Unit)의 차이로 인해, 각 영역을 엔트로피 디코딩하는 각 디코딩부의 처리 속도가 달라지며,
서로 다른 시점에 상기 디코딩부로부터 출력되는 각 영역을 저장하는 저장부가 마련되고,
상기 동기화부는 상기 저장부에 저장된 각 영역을 하나로 모아서 상기 프레임을 완성시키는 포렌식 마킹 장치.
- 제1항에 있어서,
각 영역에는 서로 다른 타일 번호가 부여되고,
상기 동기화부는 상기 타일 번호를 이용해서 복수로 분할되고 엔트로피 디코딩된 각 영역을 매칭시켜 하나의 상기 프레임을 조립하는 포렌식 마킹 장치.
- 제1항에 있어서,
특정 프레임의 각 영역은 서로 다른 시점에 각 디코딩부로부터 출력되고,
상기 특정 프레임의 영역에 대한 엔트로피 디코딩이 다른 디코딩부에서 수행 중인 상태에서 특정 디코딩부가 유휴 상태가 되면, 동기화부는 다음 프레임의 일부 영역을 상기 특정 디코딩부에 입력하는 포렌식 마킹 장치.
- 제1항에 있어서,
사전 디코딩 과정을 통해 신택스 구조(syntax structure)를 파악하는 파싱 유니트가 마련되고,
상기 동기화부는 상기 신택스 구조를 이용해서 복수의 상기 영역을 동기화시키는 포렌식 마킹 장치.
- 제6항에 있어서,
상기 파싱 유니트는 상기 사전 디코딩을 멀티미디어 데이터 처리와 신택스 관련 처리로 구분하고,
상기 파싱 유니트는 상기 멀티미디어 데이터 처리는 배제하고 상기 신택스 관련 처리만 수행해서 상기 신택스 구조의 파악에 필요한 신택스 엘리먼트(syntax element)를 획득하는 포렌식 마킹 장치.
- 제6항에 있어서,
상기 콘텐츠에 포렌식 마크를 삽입하는 마킹 유니트가 마련되고,
상기 디코딩부에서 출력되는 코드의 형식은 상기 마킹 유니트에서 요구하는 제1 입출력 형식과 다르며,
상기 신택스 구조를 이용해서 상기 디코딩부의 출력 코드를 상기 제1 입출력 형식으로 변환하고, 상기 제1 입출력 형식으로 변환된 상기 출력 코드를 상기 마킹 유니트에 제공하는 변환 유니트가 마련된 포렌식 마킹 장치.
- 제1항에 있어서,
상기 분할부 및 상기 동기화부는 컴퓨터 장치의 CPU(Central Processing Unit, 중앙처리장치)에 형성되고,
상기 디코딩부는 상기 컴퓨터 장치의 GPU(Graphics Processing Unit, 그래픽처리장치)에 형성된 포렌식 마킹 장치.
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US17/256,828 US20220353524A1 (en) | 2019-11-28 | 2020-11-26 | Parallel forensic marking apparatus and method |
PCT/KR2020/016997 WO2021107651A1 (ko) | 2019-11-28 | 2020-11-26 | 병렬 포렌식 마킹 장치 및 방법 |
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