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MỤC LỤC DANH MỤC CHỮ VIẾT TẮT DANH MỤC CÁC BẢNG DANH MỤC HÌNH VẼ MỞ ĐẦU.............................................. 1 CHƯƠNG 1: TỔNG QUAN HDTV............................ 3 1.1.Khái niệm HDTV................................. 3 1.1.1. Khái niệm và ưu điểm của HDTV [5]..........3 1.1.2.Tỷ lệ khuôn hình [3]........................3 1.1.3.Đặc tính quét ảnh...........................4 1.1.4.Độ phân giải hình và băng thông tín hiệu....5 1.2.Lịch sử và xu hướng phát triển [5].............7 1.2.1. HDTV tại Nhật Bản..........................7 1.2.2. HDTV tại Mỹ................................8 1.2.3. HDTV tại châu Âu...........................9 1.3.Mô hình tổng quan của hệ thống HD.............11 1.3.1.Hệ thống thiết bị trung tâm (Master Headend) .................................................11 1.3.2.Hệ thống mạng phân phối tín hiệu...........12 1.3.3.Thiết bị đầu cuối thuê bao.................12 CHƯƠNG 2: CÁC CÔNG NGHỆ VÀ KỸ THUẬT ĐƯỢC SỬ DỤNG TRONG HDTV......................................... 13 2.1.Tần số lấy mẫu và cấu trúc lấy mẫu............13 2.2.Lượng tử hoá.................................. 14 2.3.Nén video số bằng MPEG [3]....................16 2.3.1.Tổng quan nén MPEG.........................16 2.3.2.Nguyên lý nén Video........................17 2.3.3.Nén trong ảnh..............................18 2.3.4.Nén liên ảnh...............................19 2.4.Nén MPEG 4 [3]................................ 21 2.4.1.Tổng quan về MPEG 4........................21 2.4.2 MPEG 4 Profile.............................26 2.4.3 MPEG 4 Visual (Part 2)......................30 2.4.4. MPEG 4 AVC (Part 10)/ H264................34 2.5.Nén HDTV...................................... 41 2.6.Chuyển đổi âm thanh tiêu chuẩn SD sang âm thanh tiêu chuẩn HD..................................... 44

Truyen Hinh So Co Do Phan Giai Cao Hdtv Va Kha Nang Ung Dung XweO4Jhepp 20130409034810 577

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MC LCDANH MC CH VIT TTDANH MC CC BNGDANH MC HNH VM U...............................................................................................................1CHNG 1: TNG QUAN HDTV.....................................................................1.1.!"#$ %$&' HDTV.........................................................................................1.1.1. !"#$ %$&' () *+ ,$-' ./0 HDTV 123..................................................1.1.4.T5 6& 7"+8% "9%" 13..............................................................................1.1..:. ;% V$ZY^...........................................................................1N4...N>% ;M^%D ?%"......................................................................................1R4..@.N>% 6$]% ?%".........................................................................................1T4.@.N>% MopG @ 13........................................................................................414.@.1.TU%D =+0% (s MopG @........................................................................414.@.4 MopG @ oM^t$6Y...................................................................................4q4.@. 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