{"updated":"2025-01-19T18:00:48.758161+00:00","links":{},"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00210823","sets":["6164:6165:6640:10580"]},"path":["10580"],"owner":"44499","recid":"210823","title":["圧縮辞書の再利用による車載ECU向けデータ圧縮方式"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-06-17"},"_buckets":{"deposit":"cfcb09fd-2609-42a0-a869-0c7298e08784"},"_deposit":{"id":"210823","pid":{"type":"depid","value":"210823","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"圧縮辞書の再利用による車載ECU向けデータ圧縮方式","author_link":["534530","534529","534528"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"圧縮辞書の再利用による車載ECU向けデータ圧縮方式"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"コンシューマデバイス","subitem_subject_scheme":"Other"}]},"item_type_id":"18","publish_date":"2020-06-17","item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_18_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"神奈川工科大学大学院"},{"subitem_text_value":"創価大学"},{"subitem_text_value":"神奈川工科大学"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/210823/files/IPSJ-DICOMO2020110.pdf","label":"IPSJ-DICOMO2020110.pdf"},"date":[{"dateType":"Available","dateValue":"2022-06-17"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-DICOMO2020110.pdf","filesize":[{"value":"2.3 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"cae35321-a78c-4fd3-a0e8-8b60de2740dc","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2020 by the Information Processing Society of Japan"}]},"item_18_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"染谷, 一輝"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"寺島, 美昭"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"清原, 良三"}],"nameIdentifiers":[{}]}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_5794","resourcetype":"conference paper"}]},"item_18_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"自動運転車両の研究が活発に行われている．実際に日本でも自動運転レベル 3 の自動車が登場しつつあり，高度な制御が要求される．その制御を行うため，車載 ECU の数の肥大化，その中身であるソフトウェアの大規模化が進んでいる．一方でネットワークに接続し，便利な分，セキュリティ面での脅威も存在する．事故につながるバグや外部から攻撃される危険性を考えると ECU のソフトウェアを迅速に更新する必要があると言える．また更新には携帯網などのネットワークを経由することが対応速度的に望ましい．データ受信部となるところまでは携帯網で比較的早い通信速度でデータ受信できるが，自動車内部のネットワークは 500kbps ととても遅い．そのため車載ネットワークでは差分更新が基本となる．しかし差分更新するためには各 ECU に十分な RAM が必要であり，RAM に余裕がない場合は利用できない．本論文では従来の汎用的なデータ圧縮方式を改良し，プリセット辞書を利用することでデータを小さくし，RAM 容量に余裕がなくとおソフトウェア更新が可能な方式を提案する．","subitem_description_type":"Other"}]},"item_18_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"754","bibliographic_titles":[{"bibliographic_title":"マルチメディア，分散協調とモバイルシンポジウム2129論文集"}],"bibliographicPageStart":"748","bibliographicIssueDates":{"bibliographicIssueDate":"2020-06-17","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"2020"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":210823,"created":"2025-01-19T01:12:01.542351+00:00"}