{"id":1497,"date":"2015-02-20T02:39:09","date_gmt":"2015-02-20T02:39:09","guid":{"rendered":"http:\/\/codienlanh.com\/?p=1497"},"modified":"2015-02-20T03:11:38","modified_gmt":"2015-02-20T03:11:38","slug":"tim-hieu-ve-he-thong-hoi-nghi-truyen-hinh","status":"publish","type":"post","link":"https:\/\/codienlanh.com\/en\/tim-hieu-ve-he-thong-hoi-nghi-truyen-hinh\/","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh"},"content":{"rendered":"<p><\/p>\n<p style=\"text-align: justify;\"><strong><em>H\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/em> l\u00e0 h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb truy\u1ec1n t\u1ea3i h\u00ecnh \u1ea3nh v\u00e0 \u00e2m thanh gi\u1eefa hai ho\u1eb7c nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m t\u1eeb xa k\u1ebft n\u1ed1i qua \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng internet, WAN hay LAN \u0111\u1ec3 \u0111\u01b0a t\u00edn hi\u1ec7u \u00e2m thanh v\u00e0 h\u00ecnh \u1ea3nh c\u1ee7a c\u00e1c ph\u00f2ng h\u1ecdp \u0111\u1ebfn v\u1edbi nhau nh\u01b0 \u0111ang ng\u1ed3i h\u1ecdp c\u00f9ng m\u1ed9t ph\u00f2ng h\u1ecdp; Thi\u1ebft b\u1ecb n\u00e0y cho ph\u00e9p hai ho\u1eb7c nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m c\u00f9ng \u0111\u1ed3ng th\u1eddi li\u00ean l\u1ea1c hai chi\u1ec1u th\u00f4ng qua video v\u00e0 truy\u1ec1n \u00e2m thanh.<\/strong><\/p>\n<h3 style=\"text-align: justify;\"><strong>L\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n<\/strong><\/h3>\n<p style=\"text-align: justify;\">V\u00e0o nh\u1eefng n\u0103m 80 c\u1ee7a th\u1ebf k\u1ef7 XX, th\u1ebf h\u1ec7 \u0111\u1ea7u ti\u00ean\u00a0c\u1ee7a <strong><em>h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/em> <\/strong>\u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n qua m\u1ea1ng k\u1ef9 thu\u1eadt s\u1ed1 \u0111a d\u1ecbch v\u1ee5\u00a0ISDN\u00a0d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n H.230 c\u1ee7a T\u1ed5 ch\u1ee9c ITU. Th\u1ebf h\u1ec7 th\u1ee9 hai\u00a0c\u1ee7a h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh \u1ee9ng d\u1ee5ng cho m\u00e1y t\u00ednh c\u00e1 nh\u00e2n v\u00e0 c\u00f4ng ngh\u1ec7 th\u00f4ng tin, v\u00e0 v\u1eabn d\u1ef1a v\u00e0o m\u1ea1ng ISDN v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u00e3 ho\u00e1\/gi\u1ea3i m\u00e3, n\u00e9n\/gi\u1ea3i n\u00e9n &#8211; CODEC. Th\u1ebf h\u1ec7 th\u1ee9 ba\u00a0c\u1ee7a <em><strong>h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em> ra \u0111\u1eddi tr\u00ean c\u01a1 s\u1edf m\u1ea1ng c\u1ee5c b\u1ed9 LAN\u00a0ph\u00e1t tri\u1ec3n r\u1ea5t nhanh v\u00e0 c\u00f3 m\u1eb7t \u1edf kh\u1eafp m\u1ecdi n\u01a1i tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n<p style=\"text-align: justify;\">Hi\u1ec7n nay, c\u00f4ng ngh\u1ec7 truy\u1ec1n h\u00ecnh v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng cao s\u1eed d\u1ee5ng chu\u1ea9n H.230 c\u00f3 t\u00ednh \u01b0u vi\u1ec7t, \u0111\u00e3 v\u00e0 \u0111ang thay th\u1ebf d\u1ea7n c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n th\u00f4ng tin kh\u00e1c v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0o t\u1ea5t c\u00e1c c\u00e1c ng\u00e0nh kinh t\u1ebf qu\u1ed1c d\u00e2n t\u1eeb qu\u1ed1c ph\u00f2ng, ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe, \u0111\u00e0o t\u1ea1o, nghi\u00ean c\u1ee9u khoa h\u1ecdc, v.v&#8230; v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c trong ng\u00e0nh kinh t\u1ebf qu\u1ed1c d\u00e2n. C\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i nh\u1ea5t hi\u1ec7n nay c\u1ee7a <strong><em>h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/em><\/strong> l\u00e0 s\u1eed d\u1ee5ng theo ti\u00eau chu\u1ea9n c\u00f4ng ngh\u1ec7 H.323 qua giao th\u1ee9c IP. Khi c\u00f4ng ngh\u1ec7 HD (High Definition) ch\u00ednh th\u1ee9c ra nh\u1eadp th\u1ecb tr\u01b0\u1eddng. V\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh r\u00f5 n\u00e9t g\u1ea5p 10 l\u1ea7n so v\u1edbi chu\u1ea9n SD (Standard Definition), \u0111\u1ed9 ph\u00e2n gi\u1ea3i h\u00ecnh \u1ea3nh \u0111\u1ea1t \u0111\u1ebfn 720p, n\u00e9n Video chu\u1ea9n H.264, \u00e2m thanh AAC-LD, h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh HD th\u1ef1c s\u1ef1 tho\u1ea3 m\u00e3n \u0111\u01b0\u1ee3c nhu c\u1ea7u\u00a0\u201cgiao ti\u1ebfp \u1ea3o\u201d. C\u00f4ng ngh\u1ec7 HD gi\u00fap c\u00e1c c\u00e1c t\u1ed5 ch\u1ee9c, doanh nghi\u1ec7p thay th\u1ebf c\u00e1c cu\u1ed9c h\u1ecdp d\u00e0y \u0111\u1eb7c b\u1eb1ng nh\u1eefng cu\u1ed9c h\u1ecdp tr\u1ef1c tuy\u1ebfn.<\/p>\n<p><a href=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1498\" src=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh.jpg\" alt=\"h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh\" width=\"576\" height=\"393\" srcset=\"https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh.jpg 576w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-300x205.jpg 300w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><strong>C\u00f4ng ngh\u1ec7<\/strong><\/h3>\n<p style=\"text-align: justify;\"><em><strong>H\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em> l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed (bao g\u1ed3m c\u1ea3 ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m) s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 k\u1ef9 thu\u1eadt s\u1ed1, n\u00e9n (coder\/decoder) \u00e2m thanh v\u00e0 video trong th\u1eddi gian th\u1ef1c. Gi\u1ea3i ph\u00e1p h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 IP v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 nhi\u1ec1u giao th\u1ee9c (H.320, H.323, SIP, SCCP) cho ph\u00e9p tri\u1ec3n khai h\u1ec7 th\u1ed1ng H\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh ti\u00ean ti\u1ebfn nh\u01b0ng v\u1eabn t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f3 s\u1eb5n.<\/p>\n<p style=\"text-align: justify;\">C\u00e1c thi\u1ebft b\u1ecb c\u1ea7n thi\u1ebft cho m\u1ed9t <em><strong>h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em> bao g\u1ed3m:<\/p>\n<ul>\n<li style=\"text-align: justify;\">Video \u0111\u1ea7u v\u00e0o: Video camera ho\u1eb7c webcam.<\/li>\n<li style=\"text-align: justify;\">Video \u0111\u1ea7u ra: M\u00e0n h\u00ecnh m\u00e1y t\u00ednh, truy\u1ec1n h\u00ecnh ho\u1eb7c m\u00e1y chi\u1ebfu.<\/li>\n<li style=\"text-align: justify;\">\u00c2m thanh \u0111\u1ea7u v\u00e0o: Micro, CD\/DVD, cassette player, ho\u1eb7c b\u1ea5t k\u1ef3 ngu\u1ed3n n\u00e0o c\u1ee7a \u1ed5 c\u1eafm \u00e2m thanh preamp.<\/li>\n<li style=\"text-align: justify;\">\u00c2m thanh \u0111\u1ea7u ra: Loa ph\u00f3ng thanh \u0111i k\u00e8m v\u1edbi c\u00e1c thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i.<\/li>\n<li style=\"text-align: justify;\">Truy\u1ec1n d\u1eef li\u1ec7u: S\u1ed1 \u0111i\u1ec7n tho\u1ea1i m\u1ea1ng ho\u1eb7c t\u01b0\u01a1ng t\u1ef1, LAN ho\u1eb7c Internet.<\/li>\n<\/ul>\n<p><a href=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1499\" src=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg\" alt=\"H\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh \" width=\"500\" height=\"333\" srcset=\"https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg 500w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1-300x200.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><strong>Thi\u1ebft b\u1ecb c\u01a1 b\u1ea3n\u00a0<\/strong><\/h3>\n<p style=\"text-align: justify;\"><em><strong>H\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em> c\u01a1 b\u1ea3n g\u1ed3m:<\/p>\n<ul>\n<li style=\"text-align: justify;\">Camera &#8211; Thu t\u00edn hi\u1ec7u h\u00ecnh \u1ea3nh.<\/li>\n<li style=\"text-align: justify;\">Micro &#8211; Thu t\u00edn hi\u1ec7u \u00e2m thanh.<\/li>\n<li style=\"text-align: justify;\">DECODE &#8211; X\u1eed l\u00fd m\u00e3 h\u00f3a nh\u1eadn v\u00e0 truy\u1ec1n t\u00edn hi\u1ec7u \u00e2m thanh v\u00e0 h\u00ecnh \u1ea3nh v\u00e0 truy\u1ec1n qua \u0111\u01b0\u1eddng truy\u1ec1n.<\/li>\n<li style=\"text-align: justify;\">M\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb &#8211; Hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh c\u1ee7a c\u00e1c ph\u00f2ng h\u1ecdp t\u1eeb xa.<\/li>\n<li style=\"text-align: justify;\">Loa &#8211; Ph\u00e1t t\u00edn hi\u1ec7u \u00e2m thanh c\u1ee7a c\u00e1c ph\u00f2ng h\u1ecdp t\u1eeb xa.<\/li>\n<li style=\"text-align: justify;\">MCU &#8211; Thi\u1ebft b\u1ecb qu\u1ea3n l\u00fd v\u00e0 x\u1eed l\u00fd \u0111a \u0111i\u1ec3m<\/li>\n<li style=\"text-align: justify;\">L\u01b0u Tr\u1eef &#8211; Ghi l\u1ea1i n\u1ed9i dung cu\u1ed9c h\u1ecdp.<\/li>\n<li style=\"text-align: justify;\">Show Present &#8211; Th\u01b0\u1eddng l\u00e0 ph\u1ea7n m\u1ec1m c\u00f3 ch\u1ee9c n\u0103ng tr\u00ecnh chi\u1ebfu t\u00e0i li\u1ec7u t\u1ea1i m\u1ed9t m\u00e1y t\u00ednh l\u00ean h\u00ecnh \u1ea3nh c\u1ee7a h\u1ed9i ngh\u1ecb.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">T\u00f9y theo t\u1eebng h\u00e3ng s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 kh\u00e1c nhau nh\u01b0ng \u0111\u1ec1u \u0111i qua m\u1ed9t s\u1ed1 chu\u1ea9n giao th\u1ee9c b\u1eaft tay nhau nh\u01b0 H:323, H:264 n\u00ean c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a c\u00e1c h\u00e3ng kh\u00e1c nhau v\u1eabn b\u1eaft tay \u0111\u01b0\u1ee3c v\u1edbi nhau.<\/p>\n<p><a href=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1499\" src=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg\" alt=\"H\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh \" width=\"500\" height=\"333\" srcset=\"https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1.jpg 500w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/02\/T\u00ecm-hi\u1ec3u-v\u1ec1-h\u1ec7-th\u1ed1ng-h\u1ed9i-ngh\u1ecb-truy\u1ec1n-h\u00ecnh-1-300x200.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><strong>Ph\u00e2n lo\u1ea1i thi\u1ebft b\u1ecb<\/strong><\/h3>\n<p style=\"text-align: justify;\">V\u1ec1 c\u01a1 b\u1ea3n c\u00f3 hai lo\u1ea1i <em><strong>h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em>: H\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng v\u00e0 h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh.<\/p>\n<h3 style=\"text-align: justify;\"><strong>L\u1ee3i \u00edch c\u1ee7a H\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/h3>\n<p style=\"text-align: justify;\"><em><strong>H\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/strong><\/em> l\u00e0 m\u1ed9t b\u01b0\u1edbc ph\u00e1t tri\u1ec3n \u0111\u1ed9t ph\u00e1 c\u1ee7a c\u00f4ng ngh\u1ec7 th\u00f4ng tin, n\u00f3 cho ph\u00e9p nh\u1eefng ng\u01b0\u1eddi tham d\u1ef1 t\u1ea1i nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m t\u1eeb nh\u1eefng qu\u1ed1c gia kh\u00e1c nhau c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 trao \u0111\u1ed5i tr\u1ef1c ti\u1ebfp v\u1edbi nhau qua m\u00e0n h\u00ecnh tivi nh\u01b0 \u0111ang h\u1ecdp trong c\u00f9ng m\u1ed9t h\u1ed9i tr\u01b0\u1eddng. C\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, \u0111\u1eb7c bi\u1ec7t trong h\u1ed9i h\u1ecdp v\u00e0 h\u1ed9i th\u1ea3o. Ngo\u00e0i ra, H\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh c\u00f2n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong gi\u00e1o d\u1ee5c \u0111\u00e0o t\u1ea1o, an ninh qu\u1ed1c ph\u00f2ng, y t\u1ebf v\u00e0 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe.<\/p>\n<ul>\n<li style=\"text-align: justify;\">Ti\u1ebft ki\u1ec7m th\u1eddi gian di chuy\u1ec3n.<\/li>\n<li style=\"text-align: justify;\">Ti\u1ebft ki\u1ec7m kinh ph\u00ed.<\/li>\n<li style=\"text-align: justify;\">Th\u1ef1c hi\u1ec7n cu\u1ed9c h\u1ecdp tr\u1ef1c tuy\u1ebfn gi\u1eefa nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau.<\/li>\n<li style=\"text-align: justify;\">Nhanh ch\u00f3ng t\u1ed5 ch\u1ee9c cu\u1ed9c h\u1ecdp.<\/li>\n<li style=\"text-align: justify;\">L\u01b0u tr\u1eef to\u00e0n b\u1ed9 n\u1ed9i dung cu\u1ed9c h\u1ecdp.<\/li>\n<li style=\"text-align: justify;\">An to\u00e0n b\u1ea3o m\u1eadt.<\/li>\n<li style=\"text-align: justify;\">Ch\u1ea5t l\u01b0\u1ee3ng h\u1ed9i ngh\u1ecb \u1ed5n \u0111\u1ecbnh.<\/li>\n<li style=\"text-align: justify;\">\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u00ecnh \u1ea3nh v\u00e0 \u00e2m thanh cao.<\/li>\n<li style=\"text-align: justify;\">C\u00e1c quy\u1ebft \u0111\u1ecbnh v\u00e0 n\u1ed9i dung trao \u0111\u1ed5i \u0111\u01b0\u1ee3c \u0111\u01b0a ra k\u1ecbp th\u1eddi v\u00e0 \u0111\u00fang l\u00fac.<\/li>\n<\/ul>\n<p style=\"padding-left: 30px; text-align: right;\"><em>(Theo Wikipedia)<\/em><\/p>\n<hr \/>\n<p style=\"text-align: justify;\">\u00a0<\/p>\n<p style=\"text-align: justify;\">Xem th\u00eam:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/codienlanh.com\/nhung-dieu-co-ban-ve-he-thong-bms\/\">Nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 h\u1ec7 th\u1ed1ng BMS.<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/codienlanh.com\/tong-quan-ve-he-thong-dien-nhe\/\">T\u1ed5ng quan v\u1ec1 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n nh\u1eb9.<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/codienlanh.com\/he-thong-am-thanh-cong-cong-pa-la-gi\/\">H\u1ec7 th\u1ed1ng \u00e2m thanh c\u00f4ng c\u1ed9ng (PA) l\u00e0 g\u00ec?<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/codienlanh.com\/kien-thuc-co-ban-ve-he-thong-camera-giam-sat\/\">Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u1ec7 th\u1ed1ng Camera gi\u00e1m s\u00e1t.<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/codienlanh.com\/nha-thong-minh-smart-home-la-gi\/\">Nh\u00e0 th\u00f4ng minh (Smart home) l\u00e0 g\u00ec?<\/a><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">\u00a0<\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>H\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh l\u00e0 h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb truy\u1ec1n t\u1ea3i h\u00ecnh \u1ea3nh v\u00e0 \u00e2m thanh gi\u1eefa hai ho\u1eb7c nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m t\u1eeb xa k\u1ebft n\u1ed1i qua \u0111\u01b0\u1eddng truy\u1ec1n m\u1ea1ng internet, WAN hay LAN \u0111\u1ec3 \u0111\u01b0a t\u00edn hi\u1ec7u \u00e2m thanh v\u00e0 h\u00ecnh \u1ea3nh c\u1ee7a c\u00e1c ph\u00f2ng h\u1ecdp \u0111\u1ebfn v\u1edbi nhau nh\u01b0 \u0111ang ng\u1ed3i<\/p>\n","protected":false},"author":1,"featured_media":1501,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,20],"tags":[579,582,580,581],"class_list":["post-1497","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-ky-thuat","tag-he-thong-hoi-nghi-truyen-hinh","tag-he-thong-thiet-bi-hoi-nghi","tag-he-thong-truyen-tai-hinh-anh","tag-thiet-bi-truyen-tai-hinh-anh"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - 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