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公开(公告)号:US20170031960A1
公开(公告)日:2017-02-02
申请号:US15221916
申请日:2016-07-28
Inventor: Toshiaki TAKASU , Shinichi KIMURA , Takeharu YAMAMOTO
IPC: G06F17/30 , G06F12/0804 , G06F3/06
CPC classification number: G06F12/0804 , G06F3/0605 , G06F3/0652 , G06F3/0677 , G06F16/23
Abstract: An information recording device includes: a storage in which a database is stored, the database managing data recorded in an optical disk and history data associated with the data; and a controller that controls recording, update, and erase of the data with respect to the optical disk. The history data is pre-update data when the data recorded in the optical disk is updated. The controller determines whether at least one piece of history data associated with target data exists when the target data recorded in the optical disk is erased, and the controller erases the target data and the history data associated with the target data on the optical disk when at least the one piece of history data associated with the target data exists.
Abstract translation: 信息记录装置包括:存储数据库的存储器,数据库管理记录在光盘中的数据和与数据相关联的历史数据; 以及控制器,其控制关于光盘的数据的记录,更新和擦除。 当更新记录在光盘中的数据时,历史数据是更新前的数据。 当记录在光盘中的目标数据被擦除时,控制器确定是否存在与目标数据相关联的至少一条历史数据,并且控制器在当时在光盘上擦除与光盘上的目标数据相关联的目标数据和历史数据 至少存在与目标数据相关联的一条历史数据。