{"id":477014,"date":"2023-08-09T09:06:26","date_gmt":"2023-08-09T09:06:26","guid":{"rendered":""},"modified":"2023-09-05T11:13:52","modified_gmt":"2023-09-05T11:13:52","slug":"dvd","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dvd\/","title":{"rendered":"\u0111\u0129a DVD"},"content":{"rendered":"<p>DVD, vi\u1ebft t\u1eaft c\u1ee7a \u0110\u0129a \u0111a n\u0103ng k\u1ef9 thu\u1eadt s\u1ed1 ho\u1eb7c \u0110\u0129a video k\u1ef9 thu\u1eadt s\u1ed1, l\u00e0 ph\u01b0\u01a1ng ti\u1ec7n l\u01b0u tr\u1eef \u0111\u0129a quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 thay th\u1ebf \u0110\u0129a compact (CD), v\u1edbi dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng r\u1ed9ng h\u01a1n. \u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 1995, DVD \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 ph\u00e2n ph\u1ed1i video, \u00e2m thanh v\u00e0 d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<h2>S\u1ef1 ra \u0111\u1eddi v\u00e0 nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a DVD<\/h2>\n<p>L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00f4ng ngh\u1ec7 DVD c\u00f3 t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1990 khi hai \u0111\u1ecbnh d\u1ea1ng, \u0110\u0129a Compact \u0110a ph\u01b0\u01a1ng ti\u1ec7n (MMCD) v\u00e0 \u0110\u0129a M\u1eadt \u0111\u1ed9 Si\u00eau cao (SD), l\u1ea7n l\u01b0\u1ee3t \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ed9c l\u1eadp b\u1edfi Philips, Sony v\u00e0 Toshiba. Nh\u1eefng c\u00f4ng ngh\u1ec7 c\u1ea1nh tranh n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch cung c\u1ea5p m\u1ed9t s\u1ea3n ph\u1ea9m k\u1ebf th\u1eeba c\u00f3 dung l\u01b0\u1ee3ng cao h\u01a1n cho CD.<\/p>\n<p>Nh\u1eadn th\u1ea5y t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i m\u00e0 cu\u1ed9c chi\u1ebfn \u0111\u1ecbnh d\u1ea1ng s\u1ebd g\u00e2y ra tr\u00ean th\u1ecb tr\u01b0\u1eddng, c\u00e1c c\u00f4ng ty quy\u1ebft \u0111\u1ecbnh th\u1ed1ng nh\u1ea5t n\u1ed7 l\u1ef1c c\u1ee7a m\u00ecnh. K\u1ebft qu\u1ea3 l\u00e0 \u0111\u1ecbnh d\u1ea1ng DVD \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 ch\u00ednh th\u1ee9c v\u00e0o th\u00e1ng 9 n\u0103m 1995 b\u1edfi t\u1eadp \u0111o\u00e0n Philips, Sony, Toshiba v\u00e0 Panasonic. Nh\u1eefng \u0111\u1ea7u m\u00e1y v\u00e0 \u0111\u0129a \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c b\u00e1n ra th\u1ecb tr\u01b0\u1eddng t\u1ea1i Nh\u1eadt B\u1ea3n v\u00e0o th\u00e1ng 11 n\u0103m 1996, sau \u0111\u00f3 \u0111\u01b0\u1ee3c ph\u00e1t h\u00e0nh t\u1ea1i M\u1ef9 v\u00e0o th\u00e1ng 3 n\u0103m 1997.<\/p>\n<h2>Hi\u1ec3u DVD: M\u1ed9t c\u00e1i nh\u00ecn s\u00e2u s\u1eafc<\/h2>\n<p>\u0110\u0129a DVD l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong c\u00e1c h\u1ed1 c\u1ef1c nh\u1ecf \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo \u0111\u01b0\u1eddng xo\u1eafn \u1ed1c tr\u00ean \u0111\u0129a. Th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1ecdc b\u1eb1ng tia laser qu\u00e9t \u0111\u0129a, v\u1edbi c\u00e1c h\u1ed1 v\u00e0 v\u00f9ng ti\u1ebfp \u0111\u1ea5t (c\u00e1c v\u00f9ng b\u1eb1ng ph\u1eb3ng gi\u1eefa c\u00e1c h\u1ed1) g\u00e2y ra c\u00e1c ph\u1ea3n x\u1ea1 kh\u00e1c nhau c\u1ee7a tia laser. \u00c1nh s\u00e1ng ph\u1ea3n x\u1ea1 n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n, s\u1ed1 1 v\u00e0 s\u1ed1 0, sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n th\u00e0nh video, \u00e2m thanh ho\u1eb7c d\u1eef li\u1ec7u kh\u00e1c \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean \u0111\u0129a.<\/p>\n<p>V\u1ec1 dung l\u01b0\u1ee3ng, DVD c\u00f3 nhi\u1ec1u d\u1ea1ng. \u0110\u0129a DVD m\u1ed9t l\u1edbp c\u00f3 th\u1ec3 ch\u1ee9a \u0111\u01b0\u1ee3c 4,7GB d\u1eef li\u1ec7u, trong khi \u0111\u0129a DVD hai l\u1edbp c\u00f3 th\u1ec3 ch\u1ee9a \u0111\u01b0\u1ee3c kho\u1ea3ng 8,5GB. Con s\u1ed1 n\u00e0y nhi\u1ec1u h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi \u0111\u0129a CD v\u1ed1n ch\u1ec9 c\u00f3 th\u1ec3 l\u01b0u tr\u1eef kho\u1ea3ng 700MB d\u1eef li\u1ec7u.<\/p>\n<p>\u0110\u1ecbnh d\u1ea1ng DVD-Video, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef video k\u1ef9 thu\u1eadt s\u1ed1, l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a DVD. V\u1edbi kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef c\u00e1c b\u1ed9 phim c\u00f3 th\u1eddi l\u01b0\u1ee3ng \u0111\u1ea7y \u0111\u1ee7 v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f9ng v\u1edbi nhi\u1ec1u b\u1ea3n \u00e2m thanh, ph\u1ee5 \u0111\u1ec1 v\u00e0 c\u00e1c t\u00ednh n\u0103ng t\u01b0\u01a1ng t\u00e1c, n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n n\u1ed5i b\u1eadt tr\u00ean th\u1ecb tr\u01b0\u1eddng video gia \u0111\u00ecnh.<\/p>\n<h2>Gi\u1ea3i n\u00e9n DVD: C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 ho\u1ea1t \u0111\u1ed9ng<\/h2>\n<p>\u0110\u0129a DVD ti\u00eau chu\u1ea9n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 12cm v\u00e0 d\u00e0y 1,2mm, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u0129a CD. Tuy nhi\u00ean, c\u1ea5u tr\u00fac c\u1ee7a DVD ph\u1ee9c t\u1ea1p h\u01a1n. N\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb hai ch\u1ea5t n\u1ec1n, m\u1ed7i ch\u1ea5t d\u00e0y 0,6mm, li\u00ean k\u1ebft v\u1edbi nhau. Thi\u1ebft k\u1ebf n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng dung l\u01b0\u1ee3ng m\u00e0 c\u00f2n n\u00e2ng cao \u0111\u1ed9 b\u1ec1n c\u1ee7a \u0111\u0129a.<\/p>\n<p>Khi ph\u00e1t \u0111\u0129a DVD, tia laser \u0111\u1ecf c\u00f3 b\u01b0\u1edbc s\u00f3ng 650nm (so v\u1edbi tia laser h\u1ed3ng ngo\u1ea1i 780nm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u0129a CD) s\u1ebd chi\u1ebfu l\u00ean \u0111\u0129a. Khi tia laser di chuy\u1ec3n d\u1ecdc theo \u0111\u01b0\u1eddng xo\u1eafn \u1ed1c, n\u00f3 s\u1ebd \u0111\u1ecdc c\u00e1c h\u1ed1 v\u00e0 m\u1eb7t \u0111\u1ea5t, di\u1ec5n gi\u1ea3i nh\u1eefng thay \u0111\u1ed5i trong \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 d\u01b0\u1edbi d\u1ea1ng d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n. D\u1eef li\u1ec7u n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u1ec3 t\u00e1i t\u1ea1o n\u1ed9i dung \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef.<\/p>\n<h2>T\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a DVD<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a DVD \u0111\u00e3 gi\u00fap thi\u1ebft l\u1eadp s\u1ef1 th\u1ed1ng tr\u1ecb c\u1ee7a ch\u00fang bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>C\u00f4ng su\u1ea5t cao<\/strong>: DVD cung c\u1ea5p dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef t\u0103ng \u0111\u00e1ng k\u1ec3 so v\u1edbi CD, ch\u1ee9a \u0111\u01b0\u1ee3c nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n, ph\u00e1t video l\u00e2u h\u01a1n v\u00e0 n\u1ed9i dung ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ednh linh ho\u1ea1t<\/strong>: \u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi, DVD r\u1ea5t linh ho\u1ea1t, c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef video, \u00e2m thanh v\u00e0 d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 cho ph\u00e9p s\u1eed d\u1ee5ng ch\u00fang trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau ngo\u00e0i vi\u1ec7c ch\u1ec9 ph\u00e1t l\u1ea1i video.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed9 b\u1ec1n<\/strong>: Thi\u1ebft k\u1ebf c\u1ee7a DVD, v\u1edbi hai \u0111\u1ebf \u0111\u01b0\u1ee3c li\u00ean k\u1ebft, cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 cho l\u1edbp d\u1eef li\u1ec7u, gi\u00fap ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tr\u1ea7y x\u01b0\u1edbc v\u00e0 c\u00e1c h\u01b0 h\u1ecfng v\u1eadt l\u00fd kh\u00e1c t\u1ed1t h\u01a1n so v\u1edbi CD.<\/p>\n<\/li>\n<li>\n<p><strong>T\u01b0\u01a1ng t\u00e1c<\/strong>: DVD h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng t\u01b0\u01a1ng t\u00e1c nh\u01b0 menu, nhi\u1ec1u b\u1ea3n \u00e2m thanh v\u00e0 ph\u1ee5 \u0111\u1ec1, n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng, \u0111\u1eb7c bi\u1ec7t \u1edf \u0111\u1ecbnh d\u1ea1ng DVD-Video.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i DVD kh\u00e1c nhau<\/h2>\n<p>DVD c\u00f3 nhi\u1ec1u \u0111\u1ecbnh d\u1ea1ng kh\u00e1c nhau, m\u1ed7i \u0111\u1ecbnh d\u1ea1ng c\u00f3 m\u1ee5c \u0111\u00edch v\u00e0 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef c\u1ee5 th\u1ec3 ri\u00eang. C\u00e1c lo\u1ea1i ch\u00ednh bao g\u1ed3m:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u1ed4 \u0110\u0128A DVD<\/td>\n<td>DVD b\u1ed9 nh\u1edb ch\u1ec9 \u0111\u1ecdc c\u00f3 th\u1ec3 \u0111\u1ecdc nh\u01b0ng kh\u00f4ng th\u1ec3 ghi ho\u1eb7c ghi l\u1ea1i.<\/td>\n<\/tr>\n<tr>\n<td>DVD-R \/ DVD+R<\/td>\n<td>DVD c\u00f3 th\u1ec3 ghi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ghi m\u1ed9t l\u1ea7n.<\/td>\n<\/tr>\n<tr>\n<td>DVD-RW \/ DVD+RW<\/td>\n<td>DVD c\u00f3 th\u1ec3 ghi l\u1ea1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ghi, x\u00f3a v\u00e0 vi\u1ebft l\u1ea1i nhi\u1ec1u l\u1ea7n.<\/td>\n<\/tr>\n<tr>\n<td>DVD-R DL \/ DVD+R DL<\/td>\n<td>DVD hai l\u1edbp cung c\u1ea5p dung l\u01b0\u1ee3ng g\u1ea7n g\u1ea5p \u0111\u00f4i so v\u1edbi DVD ti\u00eau chu\u1ea9n.<\/td>\n<\/tr>\n<tr>\n<td>DVD-RAM<\/td>\n<td>\u0110\u0129a DVD c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ghi l\u1ea1i h\u01a1n 100.000 l\u1ea7n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu trong m\u00e1y quay phim v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td>DVD-\u00c2m thanh<\/td>\n<td>DVD ch\u1ec9 c\u00f3 \u00e2m thanh cung c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh v\u01b0\u1ee3t tr\u1ed9i.<\/td>\n<\/tr>\n<tr>\n<td>DVD-Video<\/td>\n<td>DVD \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho n\u1ed9i dung video, bao g\u1ed3m phim v\u00e0 ch\u01b0\u01a1ng tr\u00ecnh truy\u1ec1n h\u00ecnh.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng DVD: Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>M\u1eb7c d\u00f9 DVD \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ph\u00e2n ph\u1ed1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 nh\u01b0ng ch\u00fang c\u0169ng c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh. S\u1ef1 hao m\u00f2n v\u1eadt l\u00fd c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn suy gi\u1ea3m d\u1eef li\u1ec7u theo th\u1eddi gian v\u00e0 kh\u1ea3 n\u0103ng b\u1ecb tr\u1ea7y x\u01b0\u1edbc c\u1ee7a \u0111\u0129a c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u1ecdc c\u1ee7a n\u00f3. H\u01a1n n\u1eefa, DVD kh\u00f4ng tr\u00e1nh kh\u1ecfi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a c\u00f4ng ngh\u1ec7. V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 ph\u00e1t tr\u1ef1c tuy\u1ebfn, l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y v\u00e0 t\u1ea3i xu\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1, m\u1ee9c \u0111\u1ed9 ph\u00f9 h\u1ee3p c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n v\u1eadt l\u00fd nh\u01b0 DVD \u0111\u00e3 gi\u1ea3m s\u00fat.<\/p>\n<p>B\u1ea5t ch\u1ea5p nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, DVD v\u1eabn c\u00f3 li\u00ean quan trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. H\u1ecd cung c\u1ea5p m\u1ed9t c\u00e1ch ph\u00e2n ph\u1ed1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng d\u1ec5 d\u00e0ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf nh\u1eefng khu v\u1ef1c c\u00f3 kh\u1ea3 n\u0103ng truy c\u1eadp Internet h\u1ea1n ch\u1ebf. \u0110\u1ec3 b\u1ea3o to\u00e0n d\u1eef li\u1ec7u, vi\u1ec7c t\u1ea1o b\u1ea3n sao l\u01b0u tr\u00ean DVD v\u1eabn l\u00e0 m\u1ed9t c\u00e1ch l\u00e0m ph\u1ed5 bi\u1ebfn. H\u01a1n n\u1eefa, \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi ti\u00eau d\u00f9ng coi tr\u1ecdng kh\u00eda c\u1ea1nh h\u1eefu h\u00ecnh c\u1ee7a vi\u1ec7c s\u1edf h\u1eefu ph\u01b0\u01a1ng ti\u1ec7n v\u1eadt l\u00fd, DVD v\u1eabn l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn.<\/p>\n<p>\u0110\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a DVD, c\u00f3 nhi\u1ec1u gi\u1ea3i ph\u00e1p kh\u00e1c nhau. B\u1ed9 d\u1ee5ng c\u1ee5 s\u1eeda ch\u1eefa \u0111\u0129a chuy\u00ean d\u1ee5ng c\u00f3 th\u1ec3 gi\u00fap kh\u1eafc ph\u1ee5c c\u00e1c v\u1ebft tr\u1ea7y x\u01b0\u1edbc, \u0111\u1ed3ng th\u1eddi b\u1ea3o qu\u1ea3n v\u00e0 x\u1eed l\u00fd th\u00edch h\u1ee3p c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng v\u1eadt l\u00fd. Sao l\u01b0u d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean c\u0169ng c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ng\u1eeba m\u1ea5t d\u1eef li\u1ec7u.<\/p>\n<h2>So s\u00e1nh DVD v\u1edbi ph\u01b0\u01a1ng ti\u1ec7n l\u01b0u tr\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>So s\u00e1nh DVD v\u1edbi c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n l\u01b0u tr\u1eef kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u0129a CD v\u00e0 \u0111\u0129a Blu-ray, c\u00f3 th\u1ec3 gi\u00fap l\u00e0m n\u1ed5i b\u1eadt nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf ri\u00eang c\u1ee7a ch\u00fang. \u0110\u00e2y l\u00e0 m\u1ed9t so s\u00e1nh ng\u1eafn g\u1ecdn:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>\u0111\u0129a CD<\/th>\n<th>\u0111\u0129a DVD<\/th>\n<th>\u0111\u0129a Blu-ray<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef<\/td>\n<td>700MB<\/td>\n<td>4,7 GB (m\u1ed9t l\u1edbp) &lt;br&gt; 8,5 GB (hai l\u1edbp)<\/td>\n<td>25 GB (m\u1ed9t l\u1edbp) &lt;br&gt; 50 GB (hai l\u1edbp)<\/td>\n<\/tr>\n<tr>\n<td>B\u01b0\u1edbc s\u00f3ng Laser<\/td>\n<td>780nm<\/td>\n<td>650nm<\/td>\n<td>405nm<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1ch d\u00f9ng th\u00f4ng th\u01b0\u1eddng<\/td>\n<td>\u00c2m thanh, D\u1eef li\u1ec7u<\/td>\n<td>Video, \u00e2m thanh, d\u1eef li\u1ec7u<\/td>\n<td>Video, D\u1eef li\u1ec7u, \u00c2m thanh \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>T\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 DVD<\/h2>\n<p>M\u1eb7c d\u00f9 vi\u1ec7c s\u1eed d\u1ee5ng DVD \u0111\u00e3 gi\u1ea3m do nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef v\u00e0 ph\u00e2n ph\u1ed1i k\u1ef9 thu\u1eadt s\u1ed1, ch\u00fang v\u1eabn ti\u1ebfp t\u1ee5c hi\u1ec7n di\u1ec7n trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c nh\u1ea5t \u0111\u1ecbnh. Tu\u1ed5i th\u1ecd c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 l\u00e0 do hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed, l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng c\u00e0i \u0111\u1eb7t l\u1edbn v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n c\u1ee7a c\u00f4ng ngh\u1ec7.<\/p>\n<p>T\u01b0\u01a1ng lai c\u00f3 th\u1ec3 mang l\u1ea1i nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 \u0111\u0129a quang, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u01b0u tr\u1eef \u1ea3nh ba chi\u1ec1u, c\u00f3 kh\u1ea3 n\u0103ng cung c\u1ea5p dung l\u01b0\u1ee3ng cao h\u01a1n nhi\u1ec1u so v\u1edbi DVD hi\u1ec7n t\u1ea1i. Ngo\u00e0i ra c\u00f2n c\u00f3 m\u1ed1i quan t\u00e2m ng\u00e0y c\u00e0ng t\u0103ng trong vi\u1ec7c s\u1eed d\u1ee5ng DVD \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u l\u00e2u d\u00e0i do \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh c\u1ee7a ch\u00fang.<\/p>\n<h2>M\u00e1y ch\u1ee7 DVD v\u00e0 Proxy: K\u1ebft n\u1ed1i kh\u00f4ng mong \u0111\u1ee3i<\/h2>\n<p>M\u1eb7c d\u00f9 DVD v\u00e0 m\u00e1y ch\u1ee7 proxy d\u01b0\u1eddng nh\u01b0 thu\u1ed9c v\u1ec1 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 giao thoa v\u1edbi nhau theo nh\u1eefng c\u00e1ch th\u00fa v\u1ecb. M\u00e1y ch\u1ee7 proxy ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian cho c\u00e1c y\u00eau c\u1ea7u t\u1eeb kh\u00e1ch h\u00e0ng \u0111ang t\u00ecm ki\u1ebfm t\u00e0i nguy\u00ean t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c, cung c\u1ea5p nhi\u1ec1u ch\u1ee9c n\u0103ng kh\u00e1c nhau nh\u01b0 ki\u1ec3m so\u00e1t, b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0.<\/p>\n<p>Khi n\u00f3i \u0111\u1ebfn DVD, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng DVD ch\u1ee9a n\u1ed9i dung video c\u00f3 b\u1ea3n quy\u1ec1n, c\u00e1c h\u1ea1n ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 h\u1ea1n ch\u1ebf vi\u1ec7c xem n\u1ed9i dung \u1edf m\u1ed9t s\u1ed1 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd nh\u1ea5t \u0111\u1ecbnh, m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u1eb7n \u0111\u1ecba l\u00fd. Ng\u01b0\u1eddi xem \u1edf khu v\u1ef1c c\u00f3 n\u1ed9i dung DVD b\u1ecb ch\u1eb7n s\u1ebd kh\u00f4ng th\u1ec3 ph\u00e1t n\u1ed9i dung \u0111\u00f3. Tuy nhi\u00ean, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 v\u01b0\u1ee3t qua c\u00e1c h\u1ea1n ch\u1ebf \u0111\u00f3 b\u1eb1ng c\u00e1ch che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP ban \u0111\u1ea7u c\u1ee7a ng\u01b0\u1eddi xem v\u00e0 cung c\u1ea5p \u0111\u1ecba ch\u1ec9 IP m\u1edbi t\u1eeb khu v\u1ef1c c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c n\u1ed9i dung.<\/p>\n<p>M\u1eb7c d\u00f9 \u0111\u00e2y l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ti\u1ec1m n\u0103ng nh\u01b0ng \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 vi\u1ec7c b\u1ecf qua gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd theo c\u00e1ch n\u00e0y c\u00f3 th\u1ec3 vi ph\u1ea1m \u0111i\u1ec1u kho\u1ea3n d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 ph\u00e2n ph\u1ed1i n\u1ed9i dung v\u00e0 lu\u1eadt hi\u1ec7n h\u00e0nh.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li>Di\u1ec5n \u0111\u00e0n DVD (<a href=\"http:\/\/www.dvdforum.org\/forum.shtml\" target=\"_new\" rel=\"noopener nofollow\">http:\/\/www.dvdforum.org\/forum.shtml<\/a>)<\/li>\n<li>Hi\u1ec7p h\u1ed9i c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef quang h\u1ecdc (OSTA) (<a href=\"http:\/\/www.osta.org\/\" target=\"_new\" rel=\"noopener nofollow\">http:\/\/www.osta.org\/<\/a>)<\/li>\n<li>DVD \u0111\u01b0\u1ee3c l\u00e0m s\u00e1ng t\u1ecf (<a href=\"http:\/\/www.dvddemystified.com\/dvdfaq.html\" target=\"_new\" rel=\"noopener nofollow\">http:\/\/www.dvddemystified.com\/dvdfaq.html<\/a>)<\/li>\n<li>Hi\u1ec7p h\u1ed9i \u0111\u0129a Blu-ray (<a href=\"http:\/\/www.blu-raydisc.com\/\" target=\"_new\" rel=\"noopener nofollow\">http:\/\/www.blu-raydisc.com\/<\/a>)<\/li>\n<\/ul>\n<p>Xin l\u01b0u \u00fd r\u1eb1ng OneProxy kh\u00f4ng x\u00e1c nh\u1eadn ho\u1eb7c qu\u1ea3ng b\u00e1 b\u1ea5t k\u1ef3 ho\u1ea1t \u0111\u1ed9ng b\u1ea5t h\u1ee3p ph\u00e1p n\u00e0o, bao g\u1ed3m c\u1ea3 vi\u1ec7c v\u01b0\u1ee3t qua c\u00e1c gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd \u0111\u1ed1i v\u1edbi n\u1ed9i dung c\u00f3 b\u1ea3n quy\u1ec1n. Th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c cung c\u1ea5p ch\u1ec9 cho m\u1ee5c \u0111\u00edch gi\u00e1o d\u1ee5c. Lu\u00f4n t\u00f4n tr\u1ecdng c\u00e1c \u0111i\u1ec1u kho\u1ea3n d\u1ecbch v\u1ee5 v\u00e0 lu\u1eadt \u00e1p d\u1ee5ng t\u1ea1i \u0111\u1ecba \u0111i\u1ec3m c\u1ee7a b\u1ea1n.<\/p>","protected":false},"featured_media":468286,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477014","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Digital Versatile Discs (DVD): The Compact Storage Medium<\/mark>","faq_items":[{"question":"What is a DVD?","answer":"<p>A DVD, short for Digital Versatile Disc or Digital Video Disc, is an optical disc storage medium designed to supersede the Compact Disc (CD). It has a greater storage capacity and broader application capabilities and has been used widely for the distribution of digital video, audio, and data.<\/p>"},{"question":"When was the DVD first introduced?","answer":"<p>The DVD was officially announced in September 1995 by a consortium of Philips, Sony, Toshiba, and Panasonic. The first players and discs were commercially available in Japan in November 1996, followed by a U.S. release in March 1997.<\/p>"},{"question":"How does a DVD work?","answer":"<p>DVDs store data in microscopic pits arranged in a spiral track on the disc. This information is read by a laser that scans the disc. The pits and lands (the flat areas between pits) cause different reflections of the laser, interpreted as binary data, which are then transformed into the video, audio, or other data stored on the disc.<\/p>"},{"question":"What are the different types of DVDs?","answer":"<p>DVDs come in several formats, each designed for specific uses. They include DVD-ROM, DVD-R\/DVD+R, DVD-RW\/DVD+RW, DVD-R DL\/DVD+R DL, DVD-RAM, DVD-Audio, and DVD-Video.<\/p>"},{"question":"What challenges are associated with the use of DVDs?","answer":"<p>Physical wear and tear can lead to data degradation over time, and the disc's susceptibility to scratches can impact its readability. Moreover, with the advent of streaming services, cloud storage, and digital downloads, the relevance of physical media like DVDs has declined.<\/p>"},{"question":"How do DVDs compare to CDs and Blu-ray discs?","answer":"<p>CDs have a storage capacity of 700MB and use a 780nm laser for data reading. DVDs have a larger capacity of 4.7GB (single-layer) or 8.5GB (dual-layer), and use a 650nm laser. Blu-ray discs offer the highest capacity of 25GB (single-layer) or 50GB (dual-layer), using a 405nm laser.<\/p>"},{"question":"What is the future of DVD technology?","answer":"<p>While the use of DVDs has declined due to advancements in digital distribution and storage technologies, they continue to have a presence in certain sectors. Future advances may include technologies such as holographic storage, which can offer much higher capacities.<\/p>"},{"question":"How can proxy servers be associated with DVDs?","answer":"<p>In cases where DVDs contain copyrighted video content with geographic viewing restrictions (geo-blocking), a proxy server can be used to bypass such restrictions by masking the user's original IP address and providing a new one from a region where the content is accessible.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477014\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468286"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}