{"id":9439,"date":"2016-10-08T19:11:58","date_gmt":"2016-10-09T04:11:58","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T15:00:00","slug":"","status":"publish","type":"post","link":"http:\/\/w3devlabs.net\/wp\/?p=9439","title":{"rendered":"[\uc815\ubcf4\ud1b5\uc2e0\uc6a9\uc5b4] \ubaa8\ub380 \ub610\ub294 \ubcc0\ubcf5\uc870\uae30"},"content":{"rendered":"<p><h1>modem (modulator\/demodulator)  &#8211;  \ubaa8\ub380 \ub610\ub294 \ubcc0\ubcf5\uc870\uae30<\/h1>\n<\/p>\n<p>\ubaa8\ub380\uc740 \ucef4\ud4e8\ud130\uc5d0\uc11c \ub098\uac00\ub294 \ub514\uc9c0\ud138 \uc2e0\ud638\ub97c \uc804\ud654\ud68c\uc120\uc744 \ud1b5\ud574 \ubcf4\ub0bc \uc218 \uc788\ub3c4\ub85d \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\ub85c \ubc14\uafb8\uace0(\ubcc0\uc870), \ub4e4\uc5b4\uc624\ub294 \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\ub97c \ub514\uc9c0\ud138 \uc2e0\ud638\ub85c \ubc14\uafb8\uc5b4\uc8fc\ub294(\ubcf5\uc870) \uc7a5\uce58\ub97c \ub9d0\ud55c\ub2e4. \uc6b0\ub9ac\uac00 \uc0ac\uc6a9\ud558\ub294 \uc804\ud654\ud68c\uc120\uc774\ub098 \uc804\uc6a9\ud68c\uc120\uc740 \uc74c\uc131\uae09\uc73c\ub85c \uad6c\uc131\ub418\uc5b4\uc11c \ub514\uc9c0\ud138 \uc2e0\ud638\uac00 \ud1b5\uacfc\ud558\uba74 \ub9ce\uc740 \uac10\uc1e0\uac00 \uc77c\uc5b4\ub098\ubbc0\ub85c, 50 \ud53c\ud2b8 \uc774\uc0c1 \ub5a8\uc5b4\uc838 \uc788\ub294 \uc7a5\ube44 \uc0ac\uc774\uc5d0 \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud558\ub824\uba74 \ubaa8\ub380\uc774 \ud544\uc694\ud558\uac8c \ub41c\ub2e4. \ubaa8\ub380\uc740 \ud06c\uac8c \uc1a1\uc2e0\ubd80\uc640 \uc218\uc2e0\ubd80\ub85c \ub098\ub20c \uc218 \uc788\ub2e4. \uc1a1\uc2e0\ubd80\ub294 \ub514\uc9c0\ud138 \uc2e0\ud638\uac00 \uc778\ucf54\ub354\uc5d0 \uc785\ub825\ub418\uc5b4 &#8220;1&#8221; \uc774\ub098 &#8220;0&#8221; \uc774 \ub354\uc774\uc0c1 \ub098\uc624\uc9c0 \uc54a\ub3c4\ub85d \uc2a4\ud06c\ub7a8\ube14 \ub41c \ud6c4 \ubcc0\uc870\uae30\ub85c \ub4e4\uc5b4\uac04\ub2e4. \uc5ec\uae30\uc11c \uc57d 1700~1800 Hz \uc815\ub3c4\uc758 \ubc18\uc1a1 \uc8fc\ud30c\uc218\ub85c \ubcc0\uc870\ub41c \ud6c4 \uc544\ub0a0\ub85c\uadf8 \ud615\ud0dc\ub85c \ubcc0\ud615\ub41c \ub2e4\uc74c, \ub300\uc5ed\uc81c\ud55c \uc5ec\ud30c\uae30\ub97c \uac70\uccd0 \uc1a1\uc2e0\uc120\ub85c\ub85c \ub098\uac00\uac8c \ub41c\ub2e4. \uc218\uc2e0\ubd80\ub294 \ud1b5\uc2e0\uc120\ub85c\ub85c\ubd80\ud130 \ub4e4\uc5b4\uc624\ub294 \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\uac00 \ub300\uc5ed\uc81c\ud55c \uc5ec\ud30c\uae30\ub97c \uac70\uccd0 \uc6d0\ud558\ub294 \ubd80\ubd84\uc758 \uc8fc\ud30c\uc218 \ub300\uc5ed\uc744 \ud560\ub2f9\ubc1b\uc740 \ud6c4, \uc790\ub3d9 \uc774\ub4dd\uc870\uc808\uae30(AGC ; automatic gain control)\ub85c \ub4e4\uc5b4\uac00\uc11c \uc801\uc808\ud55c \ud06c\uae30\ub85c \ubd84\ud560\ub41c\ub2e4. \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\ub294 \ubcf5\uc870\uae30\ub97c \ud1b5\ud574 \ubcf5\uc870\ub41c \ud6c4 \ub514\uc9c0\ud138\uc2e0\ud638\ub85c \ubcc0\ud658\ub418\uace0, \ub2e4\uc2dc \ub370\uc774\ud130 \ub514\ucf54\ub354\ub97c \uac70\uccd0 \ubcf8\ub798\uc758 \ub370\uc774\ud130\ub85c \ud658\uc6d0\ub41c\ub2e4. \ubaa8\ub380\uc740 \ubbf8\uad6d\uc744 \uc911\uc2ec\uc73c\ub85c \ud558\ub294 Bell \ud45c\uc900\uacfc \uc720\ub7fd\uc744 \uc911\uc2ec\uc73c\ub85c \ud55c CCITT \ud45c\uc900\uc758 \ub450\uac00\uc9c0 \ud45c\uc900\uc774 \uc788\ub2e4. \uc774 \ub450 \uac1c\uc758 \ud45c\uc900\uc740 \uc720\uc0ac\ud55c \uacbd\uc6b0\ub3c4 \uc788\uc73c\ub098, \uc804\ud600 \ub2e4\ub978 \uacbd\uc6b0\ub3c4 \uc788\uc5b4 \uc11c\ub85c \ud638\ud658\uc131\uc744 \uac16\uc9c0 \uc54a\ub294\ub2e4. \uc804\ud654\ub9dd\uc744 \uc774\uc6a9\ud55c \ub370\uc774\ud130 \uc804\uc1a1\uc6a9 \ubaa8\ub380\uc5d0 \uad00\ud55c \uad8c\uace0\ub294 V \uc2dc\ub9ac\uc988\ub85c\uc11c \uadf8 \ub0b4\uc6a9\uc740 \ub2e4\uc74c \ud45c\uc640 \uac19\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>modem (modulator\/demodulator) &#8211; \ubaa8\ub380 \ub610\ub294 \ubcc0\ubcf5\uc870\uae30 \ubaa8\ub380\uc740 \ucef4\ud4e8\ud130\uc5d0\uc11c \ub098\uac00\ub294 \ub514\uc9c0\ud138 \uc2e0\ud638\ub97c \uc804\ud654\ud68c\uc120\uc744 \ud1b5\ud574 \ubcf4\ub0bc \uc218 \uc788\ub3c4\ub85d \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\ub85c \ubc14\uafb8\uace0(\ubcc0\uc870), \ub4e4\uc5b4\uc624\ub294 \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\ub97c \ub514\uc9c0\ud138 \uc2e0\ud638\ub85c \ubc14\uafb8\uc5b4\uc8fc\ub294(\ubcf5\uc870) \uc7a5\uce58\ub97c \ub9d0\ud55c\ub2e4. \uc6b0\ub9ac\uac00 \uc0ac\uc6a9\ud558\ub294 \uc804\ud654\ud68c\uc120\uc774\ub098 \uc804\uc6a9\ud68c\uc120\uc740 \uc74c\uc131\uae09\uc73c\ub85c \uad6c\uc131\ub418\uc5b4\uc11c \ub514\uc9c0\ud138 \uc2e0\ud638\uac00 \ud1b5\uacfc\ud558\uba74 \ub9ce\uc740 \uac10\uc1e0\uac00 \uc77c\uc5b4\ub098\ubbc0\ub85c, 50 \ud53c\ud2b8 \uc774\uc0c1 \ub5a8\uc5b4\uc838 \uc788\ub294 \uc7a5\ube44 \uc0ac\uc774\uc5d0 \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud558\ub824\uba74 \ubaa8\ub380\uc774 \ud544\uc694\ud558\uac8c \ub41c\ub2e4. \ubaa8\ub380\uc740 \ud06c\uac8c \uc1a1\uc2e0\ubd80\uc640 \uc218\uc2e0\ubd80\ub85c &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/w3devlabs.net\/wp\/?p=9439\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;[\uc815\ubcf4\ud1b5\uc2e0\uc6a9\uc5b4] \ubaa8\ub380 \ub610\ub294 \ubcc0\ubcf5\uc870\uae30&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[5922],"tags":[5921],"class_list":["post-9439","post","type-post","status-publish","format-standard","hentry","category-5922","tag-5921","entry"],"_links":{"self":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/9439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9439"}],"version-history":[{"count":0,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/9439\/revisions"}],"wp:attachment":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9439"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}