KR20200055668A - 이미지 스케일링 - Google Patents
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- KR20200055668A KR20200055668A KR1020190143443A KR20190143443A KR20200055668A KR 20200055668 A KR20200055668 A KR 20200055668A KR 1020190143443 A KR1020190143443 A KR 1020190143443A KR 20190143443 A KR20190143443 A KR 20190143443A KR 20200055668 A KR20200055668 A KR 20200055668A
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- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
- H04N19/33—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
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Abstract
Description
도 1a 및 도 1b는 본 명세서의 교시에 따라, 비디오 시스템의 다양한 실시예를 도시한 것이다.
도 2는 본 명세서의 교시에 따라, 수직 이미지 슬라이싱을 도시한 것이다.
도 3은 본 명세서의 교시에 따라, 이미지 스케일링이 어떻게 발생하는지에 대한 블록도이다.
도 4는 본 명세서의 교시에 따라, 스케일링 동작을 도시하는 블록도이다.
도 5는 본 명세서의 교시에 따라, 예시적 스케일러의 블록도이다.
도 6은 본 명세서의 교시에 따라, 파이프라이닝을 도시한 블록도이다.
도 7은 본 명세서의 교시에 따라, 비디오 스케일링 방법의 흐름도이다.
도 8은 본 명세서의 교시에 따라, HDMI 시스템의 블록도이다.
도 9a 및 도 9b는 본 명세서의 교시에 따라, 시스템-온-칩의 블록도이다.
Claims (20)
- 비디오 프로세서에 있어서,
입력 이미지를 수신하는 입력 버퍼;
상기 입력 이미지를 복수의 N 수직 슬라이스들로 분할하는 슬라이서 회로;
각각의 스케일러가 이미지 스케일링 알고리즘에 따라 상기 N 수직 슬라이스들 중 하나를 라인 단위로 스케일링하도록 구성된 하드웨어인, N 병렬 이미지 스케일러들; 및
상기 스케일링된 수직 슬라이스들을 조합된 스케일링된 출력 이미지로 조합하기 위한 출력 멀티플렉서를 포함하는, 비디오 프로세서. - 청구항 1에 있어서, 입력 비디오 스트림을 수신하고 상기 입력 비디오 스트림으로부터 상기 입력 이미지를 추출하기 위한 로직 및 회로를 더 포함하는, 비디오 프로세서.
- 청구항 1에 있어서, 각각의 수직 슬라이스는 실질적으로 상기 입력 이미지의 사분위인, 비디오 프로세서.
- 청구항 1에 있어서, 480p, 480i, 720p, 720i, 1080p, 1080i, 및 4K UHD(Ultra-High Definition)로부터 선택된 해상도의 입력 비디오 스트림을 수신하고, 상기 입력 비디오 스트림을 상기 N 병렬 이미지 스케일러들을 통해 8K UHD 해상도의 출력 비디오 스트림으로 스케일링하기 위한 로직 및 회로를 포함하는, 비디오 프로세서.
- 청구항 1에 있어서, 8K UHD 해상도의 입력 비디오 스트림을 수신하고, 상기 N 병렬 이미지 스케일러들을 통해 상기 이미지를 더 낮은 해상도로 다운스케일링하는 로직 및 회로를 포함하는, 비디오 프로세서.
- 청구항 1에 있어서, 상기 이미지 스케일링 알고리즘이 선형 보간을 포함하는, 비디오 프로세서.
- 청구항 1에 있어서, 상기 이미지 스케일링 알고리즘이 고차 보간을 포함하는, 비디오 프로세서.
- 청구항 6에 있어서, 실질적으로 제1, 제2 및 제3 사분위를 나타내는 수직 슬라이스들은 후속 슬라이스로부터 3개의 제1 픽셀들을 포함하고, 제2, 제3 및 제4 사분위들을 나타내는 수직 슬라이스들은 선행 슬라이스로부터 3개의 마지막 픽셀들을 포함하는, 비디오 프로세서.
- 청구항 1에 있어서, 상기 N 이미지 스케일러들은 파이프라인되는, 비디오 프로세서.
- 청구항 1에 있어서, 상기 출력 이미지는 고화질 멀티미디어 인터페이스(HDMI)-호환 비디오 스트림의 프레임인, 비디오 프로세서.
- 청구항 9에 있어서, 상기 입력 이미지는 고화질 멀티미디어 인터페이스(HDMI)-호환 비디오 스트림의 프레임인, 비디오 프로세서.
- 청구항 1의 비디오 프로세서를 포함하는, IP(intellectual property) 블록.
- 시스템-온-칩(SoC)에 있어서,
입력 이미지를 수신하는 회로;
상기 입력 이미지를 복수의 N 슬라이스들로 분할하는 이미지 슬라이서;
상기 N 슬라이스들을 병렬로 스케일링하도록 배치되고, 상기 입력 이미지 내 픽셀들 사이의 중간 픽셀들을 보간하기 위한 보간기 회로를 포함하는, N 이미지 스케일러들; 및
상기 스케일링된 수직 슬라이스들을 조합된 스케일링된 출력 이미지로 멀티플렉싱하기 위한 출력 멀티플렉서를 포함하는, SoC. - 청구항 13에 있어서, 픽셀 레이트의 제 1/N로 상기 입력 이미지를 수신하기 위한 N 입력 디-래스터화 버퍼; 및 상기 N 스케일링된 슬라이스들을 수집하여 이들을 1의 픽셀 레이트로 출력하기 위한 재-래스터화 버퍼를 더 포함하는, SoC.
- 청구항 13에 있어서, 상기 보간기 회로는 고차 보간기를 포함하고, 상기 수직 슬라이스들 중 적어도 일부는 선행 슬라이스로부터 3개의 마지막 픽셀들을 포함하는, SoC.
- 청구항 13에 있어서, 입력 HDMI 비디오 스트림을 수신하는 HDMI(High-Definition Multimedia Interface) 수신기;
상기 HDMI 비디오 입력을 압축해제하고 상기 입력 이미지를 추출하는, DSC 압축해제기;
상기 출력 이미지를 수신하고 상기 출력 이미지를 스케일링된 출력 HDMI 비디오 스트림으로 엔코딩하는 DSC 압축기; 및
상기 스케일링된 출력 HDMI 비디오 스트림을 송신하는 HDMI 송신기를 더 포함하는, SoC. - 이미지를 스케일링하는 방법에 있어서,
입력 이미지를 수신하는 단계;
상기 입력 이미지를 복수의 N 슬라이스들로 슬라이스하는 단계;
이미지 스케일링 알고리즘에 따라 N 슬라이스들을, 병렬로, 래스터-기반 스케일링하는 단계; 및
상기 스케일링된 수직 슬라이스들을 조합된 스케일링된 출력 이미지로 조합하는 단계를 포함하는, 방법. - 청구항 17에 있어서, 입력 비디오 스트림으로부터 상기 입력 이미지를 수신하여 추출하는 단계를 더 포함하는. 방법.
- 청구항 17에 있어서, 이미지를 8K UHD 해상도로 업스케일링하거나 8K UHD 해상도에서 상기 이미지를 다운스케일링하는 단계를 더 포함하는, 방법.
- 청구항 19에 있어서, 상기 이미지 스케일링 알고리즘은 이차 보간을 포함하고, 상기 수직 슬라이스들 중 적어도 일부는 선행 슬라이스로부터의 하나 이상의 마지막 픽셀들을 포함하는, 방법.
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