{"id":145,"date":"2020-05-13T15:04:44","date_gmt":"2020-05-13T06:04:44","guid":{"rendered":"https:\/\/tanabiki.com\/?page_id=145"},"modified":"2020-05-13T15:05:34","modified_gmt":"2020-05-13T06:05:34","slug":"dct-idct","status":"publish","type":"page","link":"https:\/\/tanabiki.com\/?page_id=145","title":{"rendered":"DCT, IDCT"},"content":{"rendered":"\n<p>8&#215;8\u306eDCT, IDCT \u3092\u884c\u3046\u56de\u8def\u3067\u3059\u3002DCT\u306f\u7c21\u5358\u306a\u884c\u5217\u306e\u8a08\u7b97\u3092\u304a\u3053\u306a\u3046\u3060\u3051\u3067\u3059\u304b\u3089\u3001<br>DSP\u5185\u8535\u306eFPGA\u3067\u3042\u308c\u3070\u3001\u5bb9\u6613\u306b\u69cb\u6210\u3067\u304d\u307e\u3059\u3002<br>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u3001Lattice FPGA (ECP2M) \u7528\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5165\u529b\u4fe1\u53f7<\/td><\/tr><tr><td>RST<\/td><td>\u975e\u540c\u671f\u30ea\u30bb\u30c3\u30c8 H=\u30ea\u30bb\u30c3\u30c8<\/td><\/tr><tr><td>CLK<\/td><td>\u30af\u30ed\u30c3\u30af<\/td><\/tr><tr><td>START<\/td><td>64\u500b\u306e\u5165\u529b\u30c7\u30fc\u30bf\u306e\u5148\u982d 1CLK H<\/td><\/tr><tr><td>XIN[9..0]<\/td><td>\u30c7\u30fc\u30bf\u5165\u529b(8&#215;8)=64\u500b\u3067\uff11\u30bb\u30c3\u30c8<\/td><\/tr><tr><td>XIN_EN<\/td><td>XIN\u306eenable\u4fe1\u53f7<\/td><\/tr><tr><td>\u51fa\u529b\u4fe1\u53f7<\/td><\/tr><tr><td>DCT_COEFF[17..0]<\/td><td>DCT\u4fc2\u6570\u51fa\u529b<\/td><\/tr><tr><td>DCFLG<\/td><td>DC\u30d5\u30e9\u30b0 (64\u500b\u306e\u5165\u529b\u30c7\u30fc\u30bf\u306e\u5148\u982d 1CLK H)<\/td><\/tr><tr><td>DCT_EN<\/td><td>DCT_COEFF\u306eenable\u4fe1\u53f7(XIN_EN\u3092\u8a2d\u3051\u305f\u70ba)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>8&#215;8\u306eDCT, IDCT \u3092\u884c\u3046\u56de\u8def\u3067\u3059\u3002DCT\u306f\u7c21\u5358\u306a\u884c\u5217\u306e\u8a08\u7b97\u3092\u304a\u3053\u306a\u3046\u3060\u3051\u3067\u3059\u304b\u3089\u3001DSP\u5185\u8535\u306eFPGA\u3067\u3042\u308c\u3070\u3001\u5bb9\u6613\u306b\u69cb\u6210\u3067\u304d\u307e\u3059\u3002\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u3001Lattice FPGA (ECP2M) \u7528\u3067\u3059\u3002  &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/tanabiki.com\/?page_id=145\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;DCT, IDCT&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/pages\/145"}],"collection":[{"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tanabiki.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=145"}],"version-history":[{"count":2,"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/pages\/145\/revisions"}],"predecessor-version":[{"id":148,"href":"https:\/\/tanabiki.com\/index.php?rest_route=\/wp\/v2\/pages\/145\/revisions\/148"}],"wp:attachment":[{"href":"https:\/\/tanabiki.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}