{"id":1356,"date":"2026-07-04T12:24:02","date_gmt":"2026-07-04T03:24:02","guid":{"rendered":"https:\/\/www.ecoop.net\/memo\/?page_id=1356"},"modified":"2026-07-04T12:37:53","modified_gmt":"2026-07-04T03:37:53","slug":"about-en","status":"publish","type":"page","link":"https:\/\/www.ecoop.net\/memo\/about-en","title":{"rendered":"About ecoop.net"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u65e5\u672c\u8a9e\u7248: <a href=\"https:\/\/www.ecoop.net\/memo\/about\">\u3053\u306e\u30b5\u30a4\u30c8\u306b\u3064\u3044\u3066<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is ecoop.net?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ecoop.net is a personal site that has published programming notes and translated<br \/>developer documentation since 2002. It has three main sections:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.ecoop.net\/memo\/\">Tech Memo (\u3066\u304f\u3081\u3082)<\/a>: a blog of programming and<br \/>server administration notes, written in Japanese.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.ecoop.net\/coop\/\">Coop!<\/a>: a programming reference archive. Its<br \/>centerpiece is a complete translation of the GNU Make 4.4 manual, available in<br \/>Japanese, Spanish, French, Portuguese and Chinese.<\/li>\n\n\n\n<li>OSS documentation translations: unofficial Japanese translations of the official<br \/><a href=\"https:\/\/www.ecoop.net\/w\/imagemagick\/\">ImageMagick<\/a>,<br \/><a href=\"https:\/\/www.ecoop.net\/w\/imagemagick-usage\/\">ImageMagick Usage<\/a>,<br \/><a href=\"https:\/\/www.ecoop.net\/w\/ffmpeg\/\">FFmpeg<\/a> and<br \/><a href=\"https:\/\/www.ecoop.net\/w\/dcmtk\/\">DCMTK<\/a> documentation.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Who runs it<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The site is run by Mitsuhiro Inomata, representative director of two companies:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/marginalgains.jp\/\">\u30de\u30fc\u30b8\u30ca\u30eb\u30b2\u30a4\u30f3\u682a\u5f0f\u4f1a\u793e (Marginal Gains Inc.)<\/a>, a systems development company<\/li>\n\n\n\n<li><a href=\"https:\/\/deeprad.co.jp\/\">DeepRad\u682a\u5f0f\u4f1a\u793e (DeepRad Inc.)<\/a>, an AI company that researches and develops medical AI<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Everything below describes earlier work as a sole proprietor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Freelance work<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Android and iOS application development<\/li>\n\n\n\n<li>Windows application development<\/li>\n\n\n\n<li>Web services for smartphones<\/li>\n\n\n\n<li>Web system development<\/li>\n\n\n\n<li>Server setup, maintenance and consulting<\/li>\n\n\n\n<li>Teaching and lecturing<\/li>\n\n\n\n<li>Other work on request<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trade name: ecoop.net<br \/>Representative: Mitsuhiro Inomata<br \/>In business since: February 1, 2013<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Selected work<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Android apps<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Emoji Input (\u7d75\u6587\u5b57\u5165\u529b)<\/strong><br \/>Released in 2010. A &#8220;Mushroom&#8221; input-extension app for Japanese IMEs, with about<br \/>280,000 total downloads. No longer available on Google Play.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ChatPad<\/strong><br \/>Released in 2012 as contract work: the Android client for<br \/><a href=\"http:\/\/chatpad.jp\/\">ChatPad<\/a>, an existing one-on-one chat web service.<br \/><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=jp.chatpad.android\">Google Play<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;The World&#8217;s Largest Christmas Tree Is This Way!&#8221;<\/strong><br \/>Released in 2012. A joint project with the Osakan Space coworking community,<br \/>covered by the Sankei Kansai newspaper. The app and the article are no longer online.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Osakan Space Compass (\u30aa\u30aa\u30b5\u30ab\u30f3\u30b9\u30da\u30fc\u30b9\u3053\u3063\u3061\u3084\u3067\uff01)<\/strong><br \/>Released in 2012. Another Osakan Space joint project. No longer available on Google Play.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Corporate websites<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"http:\/\/www.metalcreation.co.jp\/\">Metal Creation Co., Ltd.<\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.ainy-h.com\/\">Ainy Co., Ltd.<\/a><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Other contract work<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tilt-sensor library for Android<\/strong> (Java)<br \/>A library that detects device tilt from accelerometer, magnetometer and<br \/>gyroscope readings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>AR library R&amp;D for iOS\/Android<\/strong> (C\/C++)<br \/>Research on improving the accuracy and speed of OpenCV-based tag recognition.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Walking-measurement app for iOS<\/strong> (Objective-C)<br \/>An app that detects walking with CoreMotion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Google Sites gadgets<\/strong> (Java + Slim3)<br \/>Development and maintenance of Google Sites gadgets for operating Google Apps,<br \/>running on Google App Engine.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Teaching<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Instructor for the Tech Institute app developer training course, organized by<br \/>Samsung Electronics Japan, the Waseda University Extension Center and the<br \/>Kadokawa ASCII Research Institute.<br \/><a href=\"https:\/\/www.itmedia.co.jp\/mobile\/articles\/1404\/10\/news023.html\">Coverage on ITmedia (Japanese)<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Events<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tenawa (\u30c6\u30ca\u30ef)<\/strong><br \/>A monthly 10-hour meetup for catching up on the latest in generative AI,<br \/>held since April 2025.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Talks<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DroidKaigi 2019<\/li>\n\n\n\n<li>SDL App Contest 2019 (won a special prize)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>\u65e5\u672c\u8a9e\u7248: \u3053\u306e\u30b5\u30a4\u30c8\u306b\u3064\u3044\u3066 What is ecoop.net? ecoop.net is a personal site that has published programming notes and trans &hellip; <a href=\"https:\/\/www.ecoop.net\/memo\/about-en\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">About ecoop.net<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1356","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/pages\/1356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/comments?post=1356"}],"version-history":[{"count":2,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/pages\/1356\/revisions"}],"predecessor-version":[{"id":1363,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/pages\/1356\/revisions\/1363"}],"wp:attachment":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/media?parent=1356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}