“Digital Currency” Recently, Digital Currency is proceeding, but limited to wallets for purchase. To proceed more, digital currency must be applied to assets classes. Then, paper and coins currency can be invalid. If digital currency is applied to assets and used in smartphones, various types of Bonds and Securities are possible. Digital Currency is associated with Personal Information, and it causes fear and intrust to own government for some people. This problem can be solved by fear to lose money. If paper and coins are invalid, people must use digital currency. To proceed Digital Currency, deleting trust for Bitcoin is good way. Bitcoin is used for dark money, and not in control by trustable organizations. Digital Currency by government can compete Bitcoin if the government is trustable. In addition, Bitcoin has several deep security risk by hackers. Roll back is impossible when hackers steal Bitcoin.
I searched Oracle's Japan patents. Hummm... Oracle seems to be ready for online Databases, I think... FI Total 説明 Description Total 821 G06F16 277 情報検索；そのためのデータベース構造；そのためのファイルシステム構造［２０１９．０１］ Information retrieval; Database structures therefor; File system structures therefor G06F9 168 プログラム制御のための装置，例．制御装置（周辺装置のためのプログラム制御Ｇ０６Ｆ１３／１０）［２０１８．０１］ Arrangements for program control, e.g. control units (program control for peripheral devices G06F13/10) [2018.01] G06F12 151 メモリシステムまたはアーキテクチャ内でのアクセシング，アドレシングまたはアロケーティング（記録媒体，例．ディスク記録ユニット，からのデジタル入力，またはデジタル出力Ｇ０６Ｆ３／０６）［２００６．０１］ Accessing, addressing or allocating within memory systems or architectures (information storage in general G11) [4,5] G06F17 118 特定の機能に特に適合したデジタル計算またはデータ処理の装置または方法（そのための情報検索，データベース構造またはファイルシステム構造Ｇ０６Ｆ１６／００）［２０１９．０１］ Digital computing or data processing equipment or methods, specially adapted for specific functions (information retrieval, database structures or file system structures therefor G06F?16/00) [2019.01] G06F13 100