KR100928324B1 - 압축된 동영상을 복원하기 위한 프레임 버퍼 메모리 운영방법 및 이에 적합한 디코딩 장치 - Google Patents
압축된 동영상을 복원하기 위한 프레임 버퍼 메모리 운영방법 및 이에 적합한 디코딩 장치 Download PDFInfo
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Abstract
Description
Claims (7)
- I 프레임 및 P 프레임을 포함하는 압축 영상 데이터를 복원하기 위한 프레임 버퍼 메모리의 운영 방법에 있어서,(A)입력된 현재 I 프레임을 디코딩한 후, 상기 디코딩된 현재 I 프레임을 어느 하나의 대기 버퍼에 저장하고, 상기 현재 I 프레임이 저장된 대기 버퍼를 저장 버퍼로 전환함과 동시에 이전 I 프레임이 저장된 저장 버퍼를 다른 하나의 대기 버퍼로 전환하는 단계; 및(B)입력된 현재 P 프레임을 상기 저장 버퍼에 저장된 I 프레임을 참조하여 디코딩한 후, 상기 디코딩된 현재 P 프레임을 어느 하나의 대기 버퍼에 저장하고, 상기 현재 P 프레임이 저장된 대기 버퍼를 다른 하나의 대기 버퍼로 전환하는 단계를 포함한 것을 특징으로 하는 프레임 버퍼 메모리 운영 방법.
- 제1항에 있어서, 상기 저장 버퍼 및 대기 버퍼는,각각 하나의 프레임에 상응하는 메모리 용량을 갖으며, 상기 저장 버퍼의 수는 카메라 수에 상응하며, 상기 대기 버퍼의 수는 동시에 디스플레이되어야 할 영상을 제공하는 카메라 수에 상응한 것을 특징으로 하는 프레임 버퍼 메모리 운영 방법.
- 제1항에 있어서, 상기 (A) 단계는,상기 디코딩된 현재 I 프레임을 제1 대기 버퍼에 저장하고, 상기 현재 I 프 레임이 저장된 제1 대기 버퍼를 저장 버퍼로 전환함과 동시에 이전 I 프레임이 저장된 저장 버퍼를 제2 대기 버퍼로 전환하는 단계이고,상기 (B) 단계는, 상기 디코딩된 현재 P 프레임을 제1 대기 버퍼에 저장하고, 상기 현재 P 프레임이 저장된 제1 대기 버퍼를 제2 대기 버퍼로 전환하는 단계인 것을 특징으로 하는 프레임 버퍼 메모리 운영 방법.
- 제3항에 있어서, 상기 제1 대기 버퍼 및 제2 대기 버퍼는,상기 현재 I 프레임 또는 상기 현재 P 프레임이 입력되는 시점을 기준으로 상대적으로 정해지며, 유효 디코딩 데이터가 입력되는 매 프레임마다 상기 제1 대기 버퍼 및 제2 대기 버퍼는 변경되는 것을 특징으로 하는 프레임 버퍼 메모리 운영 방법.
- 제3항에 있어서, 상기 프레임 버퍼 메모리 운영 방법은,디코딩되어 저장 버퍼 또는 대기 버퍼에 저장된 영상을 역방향으로 재생함에 있어서, 상기 제2 대기 버퍼에 저장된 I 프레임 및 P 프레임을 출력하여 화면에 디스플레이하는 것을 특징으로 하는 프레임 버퍼 메모리 운영 방법.
- 인코딩된 영상 데이터를 디코딩하는 디코더;디코딩된 프레임이 저장되는 프레임 버퍼 메모리;디코딩된 프레임을 디스플레이하는 디스플레이 유닛; 및상기 프레임 버퍼 메모리에 포함된 각각의 버퍼 메모리를 I 프레임을 저장하기 위한 저장 버퍼 또는 P 프레임을 저장하기 위한 대기 버퍼 중 어느 하나로 지정하고, 매 I 프레임 주기마다 상기 저장 버퍼가 변경되도록 제어하고, 매 P 프레임 주기마다 상기 대기 버퍼가 변경되도록 제어하는 컨트롤러를 포함하는 것을 특징으로 하는 디코딩 장치.
- 제6항에 있어서, 상기 컨트롤러는,상기 디코더에 의해 디코딩된 현재 I 프레임을 최선 순위 대기 버퍼에 저장하고, 상기 현재 I 프레임이 저장된 최선 순위 대기 버퍼를 저장 버퍼로 전환함과 동시에 이전 I 프레임이 저장된 저장 버퍼를 최후 순위 대기 버퍼로 전환하고,상기 디코더에 의해 디코딩된 현재 P 프레임을 최선 순위 대기 버퍼에 저장하고, 상기 현재 P 프레임이 저장된 최선 순위 대기 버퍼를 최후 순위 대기 버퍼로 전환하는 것을 특징으로 하는 디코딩 장치.
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KR1020070099245A KR100928324B1 (ko) | 2007-10-02 | 2007-10-02 | 압축된 동영상을 복원하기 위한 프레임 버퍼 메모리 운영방법 및 이에 적합한 디코딩 장치 |
US12/242,942 US20090086818A1 (en) | 2007-10-02 | 2008-10-01 | Frame buffer memory operating method used to decompress compressed moving pictures, and decoding apparatus adapted to frame buffer memory operating method |
US12/248,886 US8060446B2 (en) | 2007-10-02 | 2008-10-09 | Method of providing services including essay providing and review services based on authentication of college students, and system therefor |
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KR1020070099245A KR100928324B1 (ko) | 2007-10-02 | 2007-10-02 | 압축된 동영상을 복원하기 위한 프레임 버퍼 메모리 운영방법 및 이에 적합한 디코딩 장치 |
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2007
- 2007-10-02 KR KR1020070099245A patent/KR100928324B1/ko not_active Expired - Fee Related
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2008
- 2008-10-01 US US12/242,942 patent/US20090086818A1/en not_active Abandoned
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Patent Citations (2)
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JP2002051325A (ja) * | 2000-08-02 | 2002-02-15 | Nippon Telegr & Teleph Corp <Ntt> | デジタル放送映像受信装置およびデジタル放送映像受信方法 |
JP2006087125A (ja) * | 2004-09-17 | 2006-03-30 | Mitsubishi Electric Information Technology Centre Europa Bv | ビデオフレームシーケンスを符号化する方法、符号化ビットストリーム、画像又は画像シーケンスを復号する方法、データの送信又は受信を含む使用、データを送信する方法、符号化及び/又は復号装置、コンピュータプログラム、システム、並びにコンピュータ読み取り可能な記憶媒体 |
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US9813718B2 (en) | 2013-10-03 | 2017-11-07 | Samsung Display Co., Ltd. | Apparatus and method for compact bit-plane data compression |
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US20090089180A1 (en) | 2009-04-02 |
US20090086818A1 (en) | 2009-04-02 |
US8060446B2 (en) | 2011-11-15 |
KR20090034083A (ko) | 2009-04-07 |
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