{"id":1927,"date":"2012-11-15T11:56:09","date_gmt":"2012-11-15T04:56:09","guid":{"rendered":"http:\/\/snt.com.vn\/blog\/?p=1927"},"modified":"2012-11-15T11:56:09","modified_gmt":"2012-11-15T04:56:09","slug":"tim-hi%e1%bb%83u-v%e1%bb%81-hdmi","status":"publish","type":"post","link":"https:\/\/snt.com.vn\/blog\/tim-hi%e1%bb%83u-v%e1%bb%81-hdmi\/","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 HDMI"},"content":{"rendered":"

T\u00ecm hi\u1ec3u v\u1ec1 HDMI<\/h1>\n

HDMI m\u1edbi nh\u01b0ng \u0111\u01a1n gi\u1ea3n \u1edf ch\u1ed7: truy\u1ec1n t\u1ea3i c\u1ea3 \u00e2m thanh, h\u00ecnh \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng n\u00e0y kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o gi\u00e1 ti\u1ec1n mua c\u00e1p.<\/p>\n

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Ch\u1ec9 trong v\u00f2ng v\u00e0i n\u0103m, HDMI \u0111\u00e3 tr\u1edf th\u00e0nh chu\u1ea9n k\u1ebft n\u1ed1i audio v\u00e0 video ch\u1ea5t l\u01b0\u1ee3ng cao th\u00f4ng d\u1ee5ng. Gi\u1edd \u0111\u00e2y th\u1ebf h\u1ec7 HDTV m\u1edbi n\u00e0o c\u0169ng \u0111\u1ec1u c\u00f3 \u00edt nh\u1ea5t hai c\u1ed5ng HDMI, c\u00f2n c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ecdc nh\u01b0 \u0111\u1ea7u DVD, \u0111\u1ea7u ghi DVD, \u0111\u1ea7u Blu-ray hay c\u00e1c m\u00e1y ch\u01a1i game, th\u1eadm ch\u00ed c\u1ea3 m\u00e1y t\u00ednh \u0111\u1ec1u t\u00edch h\u1ee3p c\u1ed5ng xu\u1ea5t HDMI cho \u0111\u01b0\u1eddng h\u00ecnh v\u00e0 ti\u1ebfng. V\u1edbi ch\u1ec9 m\u1ed9t s\u1ee3i c\u00e1p truy\u1ec1n t\u1ea3i c\u1ea3 \u00e2m thanh v\u00e0 h\u00ecnh \u1ea3nh, HDMI \u0111\u00e3 l\u00e0m cho thao t\u00e1c k\u1ebft n\u1ed1i trong h\u1ec7 th\u1ed1ng r\u1ea1p h\u00e1t t\u1ea1i gia tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n h\u01a1n nhi\u1ec1u. Tuy nhi\u00ean, c\u00e1c chu\u1ea9n HDMI 1.2, HDMI 1.3, hay t\u00ednh n\u0103ng h\u1ed7 tr\u1ee3 Deep Color c\u0169ng nh\u01b0 s\u1ef1 ch\u00eanh l\u1ec7ch gi\u00e1 gi\u1eefa c\u00e1c lo\u1ea1i c\u00e1p kh\u00f4ng kh\u1ecfi g\u00e2y m\u01a1 h\u1ed3 cho \u0111\u1ea1i b\u1ed9 ph\u1eadn ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea9y h\u1ecd quay v\u1ec1 v\u1edbi nh\u1eefng d\u1ea1ng c\u00e1p k\u1ebft n\u1ed1i analog \u0111\u01a1n gi\u1ea3n h\u01a1n ho\u1eb7c \u00edt ra h\u1ecd bi\u1ebft h\u01a1n.<\/p>\n\n\n\n\n
\"C\u00e1p<\/td>\n<\/tr>\n
\n

C\u00e1p HDMI l\u00e0 m\u1ed9t chu\u1ea9n k\u1ebft n\u1ed1i k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i video HD c\u0169ng nh\u01b0 \u00e2m thanh ch\u1ea5t l\u01b0\u1ee3ng cao tr\u00ean c\u00f9ng m\u1ed9t s\u1ee3i c\u00e1p. \u1ea2nh:\u00a0Upandruningdenver.<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

HDMI l\u00e0 g\u00ec?<\/p>\n

HDMI l\u00e0 c\u00e1c ch\u1eef c\u00e1i vi\u1ebft t\u1eaft c\u1ee7a Giao di\u1ec7n \u0111a ph\u01b0\u01a1ng ti\u1ec7n ph\u00e2n gi\u1ea3i cao (High-Definition Multimedia Interface). V\u1ec1 c\u01a1 b\u1ea3n, HDMI l\u00e0 m\u1ed9t chu\u1ea9n k\u1ebft n\u1ed1i k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i video HD c\u0169ng nh\u01b0 \u00e2m thanh ch\u1ea5t l\u01b0\u1ee3ng cao tr\u00ean c\u00f9ng m\u1ed9t s\u1ee3i c\u00e1p. Tr\u01b0\u1edbc \u0111\u00e2y, \u0111\u1ec3 c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c n\u1ed9i dung t\u01b0\u01a1ng t\u1ef1 tr\u00ean c\u00e1p analog, ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng \u0111\u1ebfn 3 c\u00e1p k\u1ebft n\u1ed1i video (c\u1ed5ng component) c\u1ed9ng th\u00eam v\u1edbi 6 c\u00e1p \u00e2m thanh analog n\u1eefa.<\/p>\n

HDMI \u0111\u01b0\u1ee3c d\u00f9ng ch\u1ee7 y\u1ebfu cho nh\u1eefng k\u1ebft n\u1ed1i t\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u1ea7n \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao nh\u01b0 \u0111\u1ea7u ghi DVD HD hay HDTV. Thao t\u00e1c k\u1ebft n\u1ed1i r\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1ea1n c\u1eafm m\u1ed9t \u0111\u1ea7u c\u00e1p v\u00e0o c\u1ed5ng HDMI Input \u1edf HDTV, c\u00f2n \u0111\u1ea7u kia c\u1eafm v\u00e0o c\u1ed5ng HDMI tr\u00ean \u0111\u1ea7u ghi\/\u0111\u1ea7u \u0111\u1ecdc. C\u00f2n n\u1ebfu nh\u01b0 b\u1ea1n l\u1ea1i c\u00f3 th\u00eam m\u1ed9t b\u1ed9 AV Receiver, th\u00ec b\u1ea1n ch\u1ec9 vi\u1ec7c \u0111\u1eb7t b\u1ed9 Reveeiver n\u00e0y v\u00e0o gi\u1eefa h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i. Ngh\u0129a l\u00e0 \u0111\u1ea7u HDMI ra c\u1ee7a Receiver s\u1ebd c\u1eafm t\u1edbi HDTV, c\u00f2n \u0111\u1ea7u v\u00e0o HDMI c\u1ee7a Receiver s\u1ebd c\u1eafm t\u1edbi c\u00e1c thi\u1ebft b\u1ecb HD kh\u00e1c.<\/p>\n

HDMI \u01b0u th\u1ebf h\u01a1n so v\u1edbi c\u00e1c c\u00e1p kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n

Chu\u1ea9n HDMI cho ph\u00e9p truy\u1ec1n t\u1ea3i v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh t\u1ed1t h\u01a1n b\u1ea5t c\u1ee9 chu\u1ea9n c\u00e1p th\u00f4ng d\u1ee5ng n\u00e0o hi\u1ec7n nay. HDMI cho ph\u00e9p b\u0103ng th\u00f4ng \u0111\u1ee7 cho video HD v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1080p v\u00e0 t\u1ed1c \u0111\u1ed9 60 khung h\u00ecnh\/gi\u00e2y, b\u0103ng th\u00f4ng cao nh\u1ea5t cho \u0111\u1ecbnh d\u1ea1ng video hi\u1ec7n nay.<\/p>\n

M\u1eb7c d\u00f9 t\u00ednh v\u1ec1 h\u00ecnh \u1ea3nh, chu\u1ea9n DVI tr\u00ean m\u00e1y t\u00ednh th\u1ef1c ra c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, nh\u01b0ng v\u1ea5n \u0111\u1ec1 l\u00e0 chu\u1ea9n n\u00e0y l\u1ea1i kh\u00f4ng th\u00f4ng d\u1ee5ng tr\u00ean HDTV c\u0169ng nh\u01b0 c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t HD hi\u1ec7n nay.<\/p>\n

C\u00f2n chu\u1ea9n Component th\u00ec m\u1eb7c d\u00f9 r\u1ea5t th\u00f4ng d\u1ee5ng tr\u00ean c\u00e1c TV c\u0169ng nh\u01b0 \u0111\u1ea7u ph\u00e1t HD v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c, nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh l\u1ea1i kh\u00f4ng b\u1eb1ng \u0111\u01b0\u1ee3c HDMI, d\u00f9 r\u1eb1ng vi\u1ec7c t\u00ecm ra s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y c\u0169ng kh\u00f4ng ph\u1ea3i d\u1ec5 d\u00e0ng g\u00ec.<\/p>\n

So v\u1edbi c\u00e1c c\u1ed5ng video quen thu\u1ed9c \u0111\u1eddi tr\u01b0\u1edbc nh\u01b0 S-video, c\u1ed5ng composit (gi\u1eafc video m\u00e0u v\u00e0ng) hay c\u1ed5ng RF th\u00ec HDMI l\u00e0 m\u1ed9t b\u01b0\u1edbc c\u1ea3i thi\u1ec7n v\u01b0\u1ee3t b\u1eadc. Tuy nhi\u00ean, ch\u1ea5t l\u01b0\u1ee3ng video th\u1ef1c ch\u1ea5t l\u1ea1i n\u1eb1m \u1edf ngu\u1ed3n ph\u00e1t. V\u00ec th\u1ebf m\u00e0 n\u1ebfu ngu\u1ed3n ph\u00e1t ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p th\u00ec c\u00f3 truy\u1ec1n b\u1eb1ng c\u1ed5ng HDMI c\u0169ng s\u1ebd cho ra h\u00ecnh \u1ea3nh t\u1ec7 h\u01a1n l\u00e0 m\u1ed9t ngu\u1ed3n ph\u00e1t video ch\u1ea5t l\u01b0\u1ee3ng cao truy\u1ec1n qua c\u1ed5ng S-video.<\/p>\n

\u0110\u1ed1i v\u1edbi \u00e2m thanh, chu\u1ea9n HDMI c\u0169ng thu\u1ed9c h\u00e0ng top khi n\u00f3 h\u1ed7 tr\u1ee3 t\u1edbi 8 k\u00eanh ti\u1ebfng 24-bit \u1edf 192 Hz, th\u1eeba \u0111\u1ee7 cho nh\u1eefng h\u1ec7 th\u1ed1ng \u00e2m thanh ch\u1ea5t l\u01b0\u1ee3ng cao nh\u1ea5t nh\u01b0 Dolby TrueHD v\u00e0 DTS-HD Master Audio. \u0110\u1ec3 c\u00f3 th\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh t\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, b\u1ea1n c\u1ea7n ch\u1ea1y t\u1edbi 8 c\u00e1p \u00e2m thanh analog \u0111a k\u00eanh. C\u00f2n c\u00e1c c\u1ed5ng \u00e2m thanh s\u1ed1 nh\u01b0 c\u1ed5ng quang hay \u0111\u1ed3ng tr\u1ee5c, s\u1ed1 k\u00eanh c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, nh\u01b0ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u00edn hi\u1ec7u s\u1ebd b\u1ecb gi\u1edbi h\u1ea1n \u1edf m\u1ee9c th\u1ea5p h\u01a1n.<\/p>\n\n\n\n\n
\"C\u1ed5ng<\/td>\n<\/tr>\n
\n

C\u1ed5ng HDMI tr\u00ean HDTV. \u1ea2nh:\u00a0HDTVtest.<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u1ed5ng HDMI \u0111\u01b0\u1ee3c d\u00f9ng tr\u00ean c\u00e1c thi\u1ebft b\u1ecb n\u00e0o?<\/p>\n

C\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u1ed5ng USB, c\u1ed5ng HDMI c\u0169ng c\u00f3 d\u1ea1ng miniHDMI b\u00e9 h\u01a1n th\u01b0\u1eddng th\u1ea5y tr\u00ean c\u00e1c m\u00e1y quay phim HD. Ch\u1ea5t l\u01b0\u1ee3ng tr\u00ean c\u1ed5ng n\u00e0y ho\u00e0n to\u00e0n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nh\u01b0 v\u1edbi c\u1ed5ng HDMI th\u00f4ng th\u01b0\u1eddng, d\u00f9 k\u00edch th\u01b0\u1edbc c\u00f3 b\u00e9 h\u01a1n. \u0110\u1ec3 k\u1ebft n\u1ed1i, b\u1ea1n ph\u1ea3i d\u00f9ng t\u1edbi c\u00e1p m\u00e0 m\u1ed9t \u0111\u1ea7u l\u00e0 c\u1ed5ng th\u01b0\u1eddng, m\u1ecdt \u0111\u1ea7u l\u00e0 c\u1ed5ng mini, ho\u1eb7c d\u00f9ng m\u1ed9t c\u00e1p th\u01b0\u1eddng v\u00e0 th\u00eam m\u1ed9t adapter chuy\u1ec3n \u0111\u1ed5i t\u1eeb HDMI sang miniHDMI.<\/p>\n

M\u1eb7c d\u00f9 chu\u1ea9n DVI \u0111\u00e3 t\u1ea1o d\u1ef1ng \u0111\u01b0\u1ee3c ch\u1ed7 \u0111\u1ee9ng tr\u00ean c\u00e1c d\u00f2ng m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, nh\u01b0ng hi\u1ec7n gi\u1edd c\u00e1c th\u1ebf h\u1ec7 m\u00e1y \u0111\u1ec3 b\u00e0n m\u1edbi c\u0169ng nh\u01b0 card m\u00e0n h\u00ecnh m\u1edbi \u0111ang d\u1ea7n chuy\u1ec3n sang xu h\u01b0\u1edbng t\u00edch h\u1ee3p th\u00eam c\u1ed5ng HDMI. Nh\u01b0ng d\u00f9 c\u00f3 nh\u01b0 v\u1eady, chu\u1ea9n n\u00e0y qu\u1ea3 th\u1eadt v\u1eabn c\u00f2n ph\u1ea3i \u0111i m\u1ed9t qu\u00e3ng \u0111\u01b0\u1eddng d\u00e0i v\u00ec kh\u00f4ng nh\u01b0 t\u00ecnh tr\u1ea1ng kh\u00f4ng \u0111\u1ed1i th\u1ee7 \u1edf h\u1ec7 th\u1ed1ng r\u1ea1p h\u00e1t t\u1ea1i gia. Trong tr\u01b0\u1eddng gi\u1ea3i tr\u00ed m\u00e1y t\u00ednh, chu\u1ea9n HDMI ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng \u0111\u1ed1i th\u1ee7 kh\u00f4ng k\u00e9m ph\u1ea7n \u01b0u vi\u1ec7t, nh\u01b0 DisplayPort c\u00f3 th\u1ec3 ra m\u1eaft trong n\u0103m nay v\u00e0 UDI s\u1ebd s\u1edbm c\u00f3 m\u1eb7t tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n

C\u00e1p \u0111\u1eaft ti\u1ec1n kh\u00f4ng x\u1ee9ng v\u1edbi gi\u00e1 c\u1ee7a n\u00f3<\/p>\n

B\u1ea1n c\u00f3 th\u1ec3 v\u00e0o b\u1ea5t c\u1ee9 c\u1eeda h\u00e0ng \u0111i\u1ec7n t\u1eed n\u00e0o v\u00e0 mua m\u1ed9t s\u1ee3i c\u00e1p HDMI. \u0110\u1eebng b\u1ecb ng\u01b0\u1eddi b\u00e1n h\u00e0ng ph\u1ec9nh n\u1ecbnh \u0111\u1ec3 b\u1ecf th\u00eam ti\u1ec1n \u0111\u1ec3 mua nh\u1eefng c\u00e1p HDMI \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n, t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n \u0111i k\u00e8m v\u1edbi gi\u00e1 ti\u1ec1n c\u1eaft c\u1ed5. N\u00f3i chung, ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ee3i v\u1edbi gi\u00e1 d\u01b0\u1edbi 35 USD v\u1edbi \u0111\u1ed9 d\u00e0i 1 m\u00e9t l\u00e0 \u0111\u1ee7. S\u1ef1 kh\u00e1c nhau gi\u1eefa m\u1ed9t s\u1ee3i c\u00e1p HDMI gi\u00e1 35 USD v\u1edbi m\u1ed9t s\u1ee3i gi\u00e1 t\u1edbi 140 USD kh\u00f4ng mang l\u1ea1i \u00fd ngh\u0129a g\u00ec c\u1ea3, b\u1edfi th\u00f4ng tin s\u1ed1 \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i tr\u00ean ch\u00fang ho\u00e0n to\u00e0n nh\u01b0 nhau, kh\u00f4ng s\u1ee3i n\u00e0o c\u00f3 th\u1ec3 khi\u1ebfn cho h\u00ecnh \u1ea3nh tr\u1edf n\u00ean \u0111\u1eb9p h\u01a1n c\u1ea3.<\/p>\n

R\u1ea5t nhi\u1ec1u lo\u1ea1i c\u00e1p c\u1ee7a \u0111\u1ee7 c\u00e1c h\u00e3ng n\u1ed5i ti\u1ebfng \u0111\u1ec1u \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c chuy\u00ean gia \u00e2m thanh s\u1eed d\u1ee5ng, nh\u01b0 Belkin, Accell, Monoprice, Monster hay SimplayHD nh\u01b0ng kh\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 n\u00e0o v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng. Ch\u1ec9 v\u1edbi m\u1ed9t s\u1ee3i c\u00e1p b\u00ecnh th\u01b0\u1eddng v\u00e0 m\u1ed9t k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn, th\u1eed nghi\u1ec7m cho th\u1ea5y kh\u00f4ng h\u1ec1 c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t h\u00ecnh hay nh\u00e1y h\u00ecnh. Ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 h\u00ecnh \u1ea3nh v\u00e0 \u00e2m thanh v\u1eabn gi\u1eef ch\u1ea5t l\u01b0\u1ee3ng cao, ch\u1eafc v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n

<\/a>Bi\u00ean t\u1eadp vi\u00ean tr\u00ean trang c\u00f4ng ngh\u1ec7\u00a0Cnet<\/em> \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u00e1p HDMI r\u1ebb ti\u1ec1n v\u1eabn \u0111em l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh xu\u1ea5t s\u1eafc. Ph\u00f2ng lab chuy\u00ean \u0111\u00e1nh gi\u00e1 c\u00e1c b\u1ed9 r\u1ea1p h\u00e1t t\u1ea1i gia c\u1ee7a h\u1ecd ch\u1ec9 s\u1eed d\u1ee5ng nh\u1eefng s\u1ee3i c\u00e1p b\u00ecnh th\u01b0\u1eddng, nh\u01b0 c\u00e1p Monoprice hay th\u1eadm ch\u00ed l\u00e0 nh\u1eefng h\u00e3ng b\u00ecnh d\u00e2n kh\u00e1c v\u1edbi t\u1ea7n su\u1ea5t r\u00fat ra c\u1eafm v\u00e0o li\u00ean t\u1ee5c m\u1ed7i khi th\u1eed nghi\u1ec7m b\u1ed9 m\u1edbi v\u00e0 v\u1edbi chi\u1ec1u d\u00e0i \u0111a d\u1ea1ng, t\u1eeb 1 t\u1edbi 5 m\u00e9t hay th\u1eadm ch\u00ed t\u1edbi 7 m\u00e9t m\u00e0 \u00e2m thanh h\u00ecnh \u1ea3nh \u0111\u1ec1u kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 g\u00ec v\u1ec1 suy hao ch\u1ea5t l\u01b0\u1ee3ng. V\u1edbi nh\u1eefng s\u1ee3i c\u00e1p b\u00ecnh d\u00e2n m\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c c\u00e1c chuy\u00ean gia \u0111\u00e1nh gi\u00e1 \u00e2m thanh h\u00ecnh \u1ea3nh ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c th\u00ec kh\u00f4ng c\u00f3 l\u00fd g\u00ec l\u1ea1i kh\u00f4ng \u0111\u1ee7 ph\u1ee5c v\u1ee5 cho nhu c\u1ea7u nghe nh\u00ecn \u0111\u01a1n gi\u1ea3n t\u1ea1i gia.<\/p>\n\n\n\n\n
\"HDMI<\/td>\n<\/tr>\n
\n

HDMI chu\u1ea9n 1.3. \u1ea2nh:\u00a0Silversonic.<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c phi\u00ean b\u1ea3n HDMI<\/p>\n

M\u1ed9t trong nh\u1eefng th\u00f4ng s\u1ed1 g\u00e2y hoang mang nh\u1ea5t c\u1ee7a chu\u1ea9n HDMI ch\u00ednh l\u00e0 c\u00e1c phi\u00ean b\u1ea3n kh\u00e1c nhau c\u1ee7a n\u00f3. Trong khi ph\u1ea7n l\u1edbn c\u00e1c thi\u1ebft b\u1ecb \u0111\u1eddi m\u1edbi h\u1ed7 tr\u1ee3 chu\u1ea9n 1.3 th\u00ec \u1edf m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb \u0111\u1eddi c\u0169 ch\u1ec9 h\u1ed7 tr\u1ee3 chu\u1ea9n 1.2 c\u0169 h\u01a1n. \u0110\u00e3 c\u00f3 qu\u00e1 nhi\u1ec1u th\u00f4ng tin v\u1ec1 chu\u1ea9n HDMI 1.3 v\u00e0 nh\u1eefng l\u1ee3i th\u1ebf b\u0103ng th\u00f4ng m\u00e0 n\u00f3 mang l\u1ea1i, v\u00e0 th\u1ef1c t\u1ebf qu\u1ea3 c\u0169ng v\u1eady. Chu\u1ea9n m\u1edbi h\u1ed7 tr\u1ee3 “Deep Color”, m\u1ed9t t\u00ednh n\u0103ng cho ph\u00e9p h\u1ed7 tr\u1ee3 m\u1ed9t gam m\u00e0u r\u1ed9ng l\u1edbn h\u01a1n. Tuy nhi\u00ean, t\u00ednh n\u0103ng n\u00e0y m\u1edbi ch\u1ec9 d\u1eebng \u1edf m\u1ed9t s\u1ed1 m\u00e1y quay HD ch\u1ee9 ch\u01b0a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean c\u00e1c thi\u1ebft b\u1ecb HD kh\u00e1c, ngay c\u1ea3 \u0111\u1ea7u Blu-ray. Chu\u1ea9n HDMI 1.3 c\u0169ng cho ph\u00e9p t\u00ednh n\u0103ng t\u1ef1 \u0111\u1ed9ng ch\u1ec9nh kh\u1edbp l\u1eddi tho\u1ea1i d\u00f9 r\u1eb1ng c\u00e1c t\u00ednh n\u0103ng kh\u1edbp l\u1eddi tho\u1ea1i v\u1ed1n c\u00f3 tr\u00ean chu\u1ea9n c\u0169 c\u0169ng kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 g\u00ec.<\/p>\n

N\u00e2ng c\u1ea5p quan tr\u1ecdng c\u1ee7a chu\u1ea9n 1.3 l\u00e0 n\u00f3 cho ph\u00e9p truy\u1ec1n th\u1eb3ng \u00e2m thanh ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 Dolby TrueHD v\u00e0 DTS-HD Master Audio d\u01b0\u1edbi d\u1ea1ng bitstream. C\u0169ng v\u1edbi soundtrack ch\u1ea5t l\u01b0\u1ee3ng cao n\u00e0y, c\u00e1c phi\u00ean b\u1ea3n HDMI ch\u1ec9 c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i n\u1ebfu nh\u01b0 n\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n sang \u0111\u1ecbnh d\u1ea1ng PCM tr\u01b0\u1edbc. Tuy nhi\u00ean, t\u00ednh n\u0103ng nay c\u00f3 v\u1ebb nh\u01b0 s\u1ebd \u00edt vai tr\u00f2 d\u1ea7n b\u1edfi l\u1ebd \u0111\u1ea7u Blu-ray th\u1ebf h\u1ec7 m\u1edbi t\u00edch h\u1ee3p gi\u1ea3i m\u00e3 cho t\u1ea5t c\u1ea3 sountrack ch\u1ea5t l\u01b0\u1ee3ng cao s\u1ebd s\u1edbm c\u00f3 m\u1eb7t tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n

M\u1ed9t \u0111i\u1ec3m \u0111\u00e1ng l\u01b0u \u00fd \u0111\u1ed1i v\u1edbi chu\u1ea9n HDMI 1.3 l\u00e0 kh\u00f4ng \u0111\u1ea3m b\u1ea3o h\u1ed7 tr\u1ee3 b\u1ea5t k\u1ef3 t\u00ednh n\u0103ng n\u00e0o n\u00f3i tr\u00ean, t\u1eeb Deep Color, t\u1ef1 \u0111\u1ed9ng kh\u1edbp l\u1eddi tho\u1ea1i t\u1edbi h\u1ed7 tr\u1ee3 truy\u1ec1n \u00e2m thanh bitstream. T\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 nh\u1eefng t\u00ednh n\u0103ng m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u1ec3 t\u00edch h\u1ee3p. N\u00f3i c\u00e1ch kh\u00e1c, ng\u01b0\u1eddi mua n\u00ean t\u1eadp trung v\u00e0o vi\u1ec7c thi\u1ebft b\u1ecb HD c\u00f3 nh\u1eefng t\u00ednh n\u0103ng n\u00e0o thay v\u00ec ch\u00fa tr\u1ecdng vi\u1ec7c n\u00f3 h\u1ed7 tr\u1ee3 phi\u00ean b\u1ea3n HDMI n\u00e0o. Th\u00eam v\u00e0o \u0111\u00f3, theo l\u1eddi ng\u01b0\u1eddi ph\u00e1t ng\u00f4n c\u1ee7a chu\u1ea9n HDMI, 98% c\u00e1p HDMI t\u01b0\u01a1ng th\u00edch t\u1ed1t v\u1edbi chu\u1ea9n HDMI 1.3. V\u00ec th\u1ebf, kh\u00f4ng l\u00fd do g\u00ec l\u1ea1i ph\u1ea3i b\u1ecf th\u00eam ti\u1ec1n mua m\u1ed9t s\u1ee3i c\u00e1p chuy\u00ean d\u1ee5ng h\u1ed7 tr\u1ee3 phi\u00ean b\u1ea3n 1.3.<\/p>\n

Th\u00e1ng 5 v\u1eeba r\u1ed3i chu\u1ea9n HDMI 1.4 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. Chu\u1ea9n n\u00e0y th\u00eam v\u00e0o nhi\u1ec1u t\u00ednh n\u0103ng m\u1edbi h\u1eefu \u00edch nh\u01b0 HDMI Ethernet cho ph\u00e9p k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 Audio Return Channels cho ph\u00e9p truy\u1ec1n \u00e2m thanh hai chi\u1ec1u. V\u1ec1 m\u1eb7t ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, HDMI 1.4 \u0111\u00e3 s\u1eb5n s\u00e0ng cho 3-D v\u00e0 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 t\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 4.096 x 2.160 pixel v\u1edbi \u0111\u1ed9 s\u00e2u m\u00e0u c\u1ea3i thi\u1ec7n h\u01a1n. Cu\u1ed1i c\u00f9ng l\u00e0 m\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i microHDMI h\u1ed7 tr\u1ee3 cho k\u1ebft n\u1ed1i t\u1edbi \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng hay m\u00e1y \u1ea3nh… C\u00e1c thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 chu\u1ea9n n\u00e0y d\u1ef1 ki\u1ebfn s\u1ebd ra m\u1eaft th\u1ecb tr\u01b0\u1eddng v\u00e0o n\u0103m sau.<\/p>\n

C\u00e1p HDMI ch\u1ea1y \u0111\u01b0\u1ee3c bao xa?<\/p>\n

C\u0169ng nh\u01b0 c\u00e1c lo\u1ea1i c\u00e1p kh\u00e1c, t\u00edn hi\u1ec7u tr\u00ean c\u00e1p HDMI c\u0169ng s\u1ebd b\u1ecb suy hao theo chi\u1ec1u d\u00e0i ch\u1ea1y c\u00e1p. M\u1eb7c d\u00f9 nh\u00f3m ph\u00e1t tri\u1ec3n HDMI kh\u00f4ng c\u00f4ng b\u1ed1 con s\u1ed1 ch\u00ednh th\u1ee9c v\u1ec1 \u0111\u1ed9 d\u00e0i t\u1ed1i \u0111a cho ph\u00e9p c\u1ee7a c\u00e1p n\u00e0y, nh\u01b0ng h\u1ecd gi\u00e1n ti\u1ebfp \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ngo\u00e0i 10 m\u00e9t ch\u1ea5t l\u01b0\u1ee3ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng. Tuy nhi\u00ean, qua th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng, nh\u1eefng s\u1ee3i c\u00e1p HDMI Accell d\u00e0i t\u1edbi 21 m\u00e9t t\u1ea1i Ph\u00f2ng th\u1eed nghi\u1ec7m c\u1ee7a\u00a0Cnet<\/em> hay nh\u1eefng s\u1ee3i c\u00e1p HDMI Monoprice d\u00e0i t\u1edbi 25 m\u00e9t c\u0169ng \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ti\u00eau d\u00f9ng \u0111\u00e1nh gi\u00e1 cao. Th\u1ef1c ch\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng c\u00e1p kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t. B\u1ea3n th\u00e2n c\u1ed5ng xu\u1ea5t HDMI tr\u00ean thi\u1ebft b\u1ecb v\u00e0 c\u1ed5ng HDMI input tr\u00ean HDTV c\u0169ng c\u00f3 \u1ea3nh h\u01b0\u1edfng nh\u1ea5t \u0111\u1ecbnh \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u truy\u1ec1n tr\u00ean \u0111\u01b0\u1eddng d\u00e2y. V\u00ec th\u1ebf t\u1ed1t nh\u1ea5t ng\u01b0\u1eddi d\u00f9ng t\u1ef1 \u0111\u00e1nh gi\u00e1 v\u1ec1 t\u01b0\u01a1ng quan ch\u1ea5t l\u01b0\u1ee3ng\/\u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1p trong h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n\n
\"HDMI<\/td>\n<\/tr>\n
\n

HDMI switch. \u1ea2nh:\u00a0Futurelooks.<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>HDMI switch<\/p>\n

V\u1edbi ng\u00e0y c\u00e0ng nhi\u1ec1u thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 c\u1ed5ng HDMI trong khi s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng HDMI Input c\u1ee7a HDTV th\u00ec c\u00f3 h\u1ea1n, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u00ednh \u0111\u1ebfn vi\u1ec7c d\u00f9ng HDMI Switch m\u00e0 kh\u00f4ng ph\u1ea3i mua th\u00eam m\u00e0n HDTV. V\u1edbi c\u1ea5u h\u00ecnh \u0111\u01a1n gi\u1ea3n, t\u1ea5t c\u1ea3 vi\u1ec7c c\u1ea7n l\u00e0m ch\u1ec9 l\u00e0 k\u1ebft n\u1ed1i c\u00e1p t\u1eeb thi\u1ebft b\u1ecb t\u1edbi switch v\u00e0 k\u1ebft n\u1ed1i \u0111\u1ea7u ra c\u1ee7a switch t\u1edbi HDTV. H\u1ea7u h\u1ebft c\u00e1c b\u1ed9 HDMI Switch \u0111\u1ec1u \u0111i k\u00e8m v\u1edbi m\u1ed9t \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa h\u1ed3ng ngo\u1ea1i, v\u00ec th\u1ebf ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i qua l\u1ea1i gi\u1eefa c\u00e1c c\u1ed5ng m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/p>\n

HDCP l\u00e0 g\u00ec<\/p>\n

HDCP l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt n\u1ed9i dung s\u1ed1 b\u0103ng th\u00f4ng cao (High-bandwidth Digital Content Protection), cho ph\u00e9p c\u01a1 ch\u1ebf b\u1ea3o v\u1ec7 b\u1ea3n quy\u1ec1n tr\u00ean c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng HDMI. Khi hai thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i qua c\u1ed5ng HDMI, HDCP y\u00eau c\u1ea7u c\u00e1c th\u1ebft b\u1ecb n\u00e0y ph\u1ea3i “b\u1eaft tay” nhau li\u00ean t\u1ee5c hay ph\u1ea3i x\u00e1c nh\u1eadn r\u1eb1ng \u0111\u00e2y l\u00e0 hai thi\u1ebft b\u1ecb h\u1ee3p ph\u00e1p. B\u1ea3o v\u1ec7 b\u1ea3n quy\u1ec1n v\u1ed1n r\u1ea5t \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng ty \u0111a ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 c\u00e1c ph\u00f2ng chi\u1ebfu phim ch\u00fa tr\u1ecdng, nh\u1eb1m tr\u00e1nh vi\u1ec7c sao ch\u00e9p tr\u00e1i ph\u00e9p phim \u1ea3nh v\u00e0 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh TV.<\/p>\n

N\u1ebfu \u0111\u1ecdc xong m\u00e0 b\u1ea1n v\u1eabn c\u00f2n m\u01a1 h\u1ed3 v\u1ec1 chu\u1ea9n n\u00e0y, th\u00ec \u00edt nh\u1ea5t c\u0169ng ch\u1ec9 c\u1ea7n nh\u1edb th\u00f4ng tin v\u00f4 d\u00f9ng \u0111\u01a1n gi\u1ea3n. \u0110\u00f3 l\u00e0: “Kh\u00f4ng c\u00f3 l\u00fd do g\u00ec \u0111\u1ec3 c\u1ed1 b\u1ecf ti\u1ec1n ra mua nh\u1eefng s\u1ee3i c\u00e1p HDMI \u0111\u1eaft \u0111\u1ecf n\u1ebfu nh\u01b0 b\u1ea1n c\u00f3 th\u1ec3 mua \u0111\u01b0\u1ee3c lo\u1ea1i r\u1ebb h\u01a1n”.<\/a><\/p>\n

Nguy\u1ec5n H\u00e0<\/strong> (theo\u00a0Cnet<\/em>)<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

T\u00ecm hi\u1ec3u v\u1ec1 HDMI HDMI m\u1edbi nh\u01b0ng \u0111\u01a1n gi\u1ea3n \u1edf ch\u1ed7: truy\u1ec1n t\u1ea3i c\u1ea3 \u00e2m thanh, h\u00ecnh \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,81],"tags":[],"yoast_head":"\nT\u00ecm hi\u1ec3u v\u1ec1 HDMI - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/snt.com.vn\/blog\/tim-hi\u1ec3u-v\u1ec1-hdmi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 HDMI - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\" \/>\n<meta property=\"og:description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 HDMI HDMI m\u1edbi nh\u01b0ng \u0111\u01a1n gi\u1ea3n \u1edf ch\u1ed7: truy\u1ec1n t\u1ea3i c\u1ea3 \u00e2m thanh, h\u00ecnh \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng\" \/>\n<meta property=\"og:url\" content=\"https:\/\/snt.com.vn\/blog\/tim-hi\u1ec3u-v\u1ec1-hdmi\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog SNT - 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