{"id":2467,"date":"2017-03-06T18:11:22","date_gmt":"2017-03-06T18:11:22","guid":{"rendered":"http:\/\/hoanghamobile.com\/tin-tuc\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\/"},"modified":"2017-03-19T09:36:19","modified_gmt":"2017-03-19T09:36:19","slug":"li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\/","title":{"rendered":"Li-Fi \u2013 c\u00f4ng ngh\u1ec7 k\u1ebft n\u1ed1i b\u1eb1ng \u00e1nh s\u00e1ng \u0111\u00e8n LED m\u1edbi s\u1ebd \u201c\u0111\u00e1 bay\u201d Wi-Fi trong t\u01b0\u01a1ng lai"},"content":{"rendered":"

\"lifi<\/span><\/p>\n

Li-Fi s\u1ebd thay th\u1ebf hoàn toàn Wi-Fi trong t\u01b0\u01a1ng lai<\/em><\/span><\/span><\/p>\n

Vì v\u1eady, các nhà nghiên c\u1ee9u \u0111ang t\u1ea1o ra m\u1ed9t công ngh\u1ec7 m\u1edbi có tên là Li-Fi. \u0110ây là m\u1ed9t lo\u1ea1i công c\u1ee5 truy\u1ec1n t\u1ea3i tín hi\u1ec7u b\u1eb1ng ánh sáng \u0111èn LED qua m\u1ed9t chi\u1ebfc USB chuyên d\u1ee5ng. Công ngh\u1ec7 Li-Fi m\u1edbi này s\u1ebd có t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i c\u1ef1c nhanh, 1TB d\u1eef li\u1ec7u ch\u1ec9 trong m\u1ed9t giây. Bên c\u1ea1nh \u0111ó, Li-Fi c\u0169ng s\u1ebd có \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n và an toàn h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi Wi-Fi.<\/span><\/p>\n

Truy\u1ec1n tín hi\u1ec7u k\u1ebft n\u1ed1i b\u1eb1ng ánh sáng \u0111èn LED<\/strong><\/span><\/p>\n

M\u1ea1ng Wi-Fi \u0111ang l\u1ed9 rõ nhi\u1ec1u y\u1ebfu \u0111i\u1ec3m, ch\u1eb3ng h\u1ea1n nh\u01b0: tính b\u1ea3o m\u1eadt luôn b\u1ecb \u0111e d\u1ecda, không th\u1ec3 dùng \u1edf m\u1ed9t s\u1ed1 n\u01a1i, t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i còn th\u1ea5p,… Vì v\u1eady, các nhà nghiên c\u1ee9u càng có \u0111\u1ed9ng l\u1ef1c t\u1ea1o ra m\u1ed9t lo\u1ea1i \u0111èn LED truy\u1ec1n t\u1ea3i tín hi\u1ec7u r\u1ea5t nhanh thông qua sóng ánh sáng. Thi\u1ebft b\u1ecb s\u1ebd k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi Internet b\u1eb1ng chính ánh sáng phát ra t\u1eeb lo\u1ea1i \u0111èn LED \u0111ó.<\/span><\/p>\n

\"lifi<\/span><\/p>\n

Sóng ánh sáng không th\u1ec3 truy\u1ec1n qua t\u01b0\u1eddng nh\u01b0 sóng vô tuy\u1ebfn<\/em><\/span><\/span><\/p>\n

Công ngh\u1ec7 có tên là Li-Fi này ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 các công ngh\u1ec7 giao ti\u1ebfp b\u1eb1ng ánh sáng, d\u1ef1a trên nguyên lý sau: các bóng \u0111èn trong h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u01b0\u1ee3c b\u1eadt\/t\u1eaft r\u1ea5t nhanh \u1edf t\u1ed1c \u0111\u1ed9 nano giây. M\u1ed7i l\u1ea7n b\u1eadt\/t\u1eaft nh\u01b0 th\u1ebf thì m\u1ed9t b\u1ed9 thu tín hi\u1ec7u s\u1ebd ghi nh\u1eadn và chuy\u1ec3n th\u1ec3 thành d\u1eef li\u1ec7u.<\/span><\/p>\n

\"lifi<\/span><\/p>\n

Sóng ánh sáng truy\u1ec1n theo \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/span><\/span><\/p>\n

Vì \u0111i\u1ec1u này di\u1ec5n ra quá nhanh nên m\u1eaft ng\u01b0\u1eddi không th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng thái c\u1ee7a \u0111èn, chúng ta v\u1eabn th\u1ea5y bóng sáng nh\u01b0 bình th\u01b0\u1eddng. Ch\u1eafc ch\u1eafn r\u1eb1ng các bóng \u0111èn Li-Fi c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c duy trì ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ec3 có th\u1ec3 ch\u1ea1y, tuy nhiên bóng có th\u1ec3 ch\u1ec9nh \u0111\u1ed9 sáng xu\u1ed1ng m\u1ed9t m\u1ee9c c\u1ef1c th\u1ea5p mà m\u1eaft chúng ta không nhìn th\u1ea5y nh\u01b0ng vi\u1ec7c truy\u1ec1n t\u1ea3i tín hi\u1ec7u v\u1eabn di\u1ec5n ra \u0111\u01b0\u1ee3c.<\/span><\/p>\n

Kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u c\u1ef1c cao, b\u1ea3o m\u1eadt t\u1ed1t h\u01a1n<\/strong><\/span><\/p>\n

Li-Fi có th\u1ec3 truy\u1ec1n 1TB d\u1eef li\u1ec7u ch\u1ec9 trong m\u1ed9t giây, g\u1ea5p 1000 l\u1ea7n so v\u1edbi Wi-Fi. Bên c\u1ea1nh \u0111ó, trong khi Wi-Fi s\u1eed d\u1ee5ng sóng vô tuy\u1ebfn không t\u1eadp trung vào m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n nên t\u1ed1c \u0111\u1ed9 c\u0169ng nh\u01b0 v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt không cao thì Li-Fi  dù không cung c\u1ea5p kh\u1ea3 n\u0103ng bao quát vùng có di\u1ec7n tích l\u1edbn nh\u01b0ng l\u1ea1i cho kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt cao khi m\u1ed9t \u0111\u01b0\u1eddng chuy\u1ec1n b\u1ecb gi\u1edbi h\u1ea1n trong m\u1ed9t di\u1ec7n tích nh\u1ecf, n\u01a1i có \u0111\u1eb7t \u0111èn LED – LiFi.<\/span><\/p>\n

\"lifi<\/span><\/p>\n

USB chuyên d\u1ee5ng dành cho Li-Fi<\/em><\/span><\/span><\/p>\n

Riêng v\u1ec1 ph\u1ea7n tiêu th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, Li-Fi c\u0169ng s\u1eed d\u1ee5ng ít h\u01a1n h\u1eb3n so v\u1edbi Wi-Fi. Hi\u1ec7n t\u1ea1i thì \u0111\u1ec3 có th\u1ec3 dùng Li-Fi, ta c\u1ea7n ph\u1ea3i có m\u1ed9t thi\u1ebft b\u1ecb USB chuyên d\u1ee5ng. Nh\u01b0ng v\u1edbi công ngh\u1ec7 phát tri\u1ec3n t\u1eebng ngày \u0111i cùng v\u1edbi ti\u1ebfn \u0111\u1ed9 v\u01b0\u1ee3t b\u1eadc nh\u01b0 hi\u1ec7n nay. Có th\u1ec3 trong t\u01b0\u01a1ng lai, Li-Fi s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng thành t\u1ef1u \u0111áng k\u1ec3 khác.<\/span><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ea1ng Wi-Fi hi\u1ec7n nay \u0111ã r\u1ea5t ph\u1ed5 bi\u1ebfn trong xã h\u1ed9i. Tuy nhiên, công ngh\u1ec7 phát tri\u1ec3n r\u1ea5t nhanh và m\u1ea1nh hi\u1ec7n nay \u0111ang khi\u1ebfn cho Wi-Fi l\u1ed9 r\u1ea5t nhi\u1ec1u y\u1ebfu \u0111i\u1ec3m.<\/strong><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,14,7],"tags":[],"class_list":["post-2467","post","type-post","status-publish","format-standard","hentry","category-tin-cong-nghe","category-tin-hot","category-tin-tuc-cong-nghe"],"yoast_head":"\nLi-Fi \u2013 c\u00f4ng ngh\u1ec7 k\u1ebft n\u1ed1i b\u1eb1ng \u00e1nh s\u00e1ng \u0111\u00e8n LED m\u1edbi s\u1ebd \u201c\u0111\u00e1 bay\u201d Wi-Fi trong t\u01b0\u01a1ng lai - Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile<\/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:\/\/hoanghamobile.com\/tin-tuc\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Li-Fi \u2013 c\u00f4ng ngh\u1ec7 k\u1ebft n\u1ed1i b\u1eb1ng \u00e1nh s\u00e1ng \u0111\u00e8n LED m\u1edbi s\u1ebd \u201c\u0111\u00e1 bay\u201d Wi-Fi trong t\u01b0\u01a1ng lai\" \/>\n<meta property=\"og:description\" content=\"M\u1ea1ng Wi-Fi hi\u1ec7n nay \u0111ã r\u1ea5t ph\u1ed5 bi\u1ebfn trong xã h\u1ed9i. Tuy nhiên, công ngh\u1ec7 phát tri\u1ec3n r\u1ea5t nhanh và m\u1ea1nh hi\u1ec7n nay \u0111ang khi\u1ebfn cho Wi-Fi l\u1ed9 r\u1ea5t nhi\u1ec1u y\u1ebfu \u0111i\u1ec3m.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hoanghamobile.com\/tin-tuc\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\/\" \/>\n<meta property=\"og:site_name\" content=\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hoanghamobilecom\" \/>\n<meta property=\"article:published_time\" content=\"2017-03-06T18:11:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-03-19T09:36:19+00:00\" \/>\n<meta name=\"author\" content=\"sialthuong\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"sialthuong\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/\"},\"author\":{\"name\":\"sialthuong\",\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/#\\\/schema\\\/person\\\/0a4281405e200c4921ffc4d15a723bac\"},\"headline\":\"Li-Fi \u2013 c\u00f4ng ngh\u1ec7 k\u1ebft n\u1ed1i b\u1eb1ng \u00e1nh s\u00e1ng \u0111\u00e8n LED m\u1edbi s\u1ebd \u201c\u0111\u00e1 bay\u201d Wi-Fi trong t\u01b0\u01a1ng lai\",\"datePublished\":\"2017-03-06T18:11:22+00:00\",\"dateModified\":\"2017-03-19T09:36:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/\"},\"wordCount\":953,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/#organization\"},\"articleSection\":[\"Tin C\u00f4ng Ngh\u1ec7\",\"Tin hot\",\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/#respond\"]}],\"copyrightYear\":\"2017\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/\",\"url\":\"https:\\\/\\\/hoanghamobile.com\\\/tin-tuc\\\/li-fi-cong-nghe-ket-noi-bang-anh-sang-den-led-moi-se-da-bay-wi-fi-trong-tuong-lai\\\/\",\"name\":\"Li-Fi \u2013 c\u00f4ng ngh\u1ec7 k\u1ebft n\u1ed1i b\u1eb1ng \u00e1nh s\u00e1ng \u0111\u00e8n LED m\u1edbi s\u1ebd \u201c\u0111\u00e1 bay\u201d Wi-Fi trong t\u01b0\u01a1ng lai - 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