公开(公告)号：US5548716A

公开(公告)日：1996-08-20

申请号：US283780

申请日：1994-08-01

申请人： Takumi Maruyama ,  Noriyuki Yokoshi

发明人： Takumi Maruyama ,  Noriyuki Yokoshi

IPC分类号： G06F3/06 ,  G06F11/20 ,  G06F11/30 ,  G11C29/00 ,  G06F11/00

CPC分类号： G06F11/2071 ,  G06F11/3055 ,  G11C29/74

摘要： A main controller of a recording medium dualization system reads, when the power is turned on, three types of information: USE information (status information of a recording medium of each medium board) indicating whether or not the medium can be used; ACT information indicating which of the recording mediums is or was used in an active system; and PWON information indicating whether or not the power for the recording medium is turned on, whereupon the main controller sets the information to denote that the master system is an active system and executes a mirroring process whereby the USE information and the PWON information of the slave system are identical to the master system. When it is found that the recording medium of the master system is removed, on the basis of the USE and ACT information, the slave system is switched to an active system, and the corresponding information setting is performed. When it is found that the recording medium of the master system is mounted, on the basis of the PWON information, the USE information and the PWON information of the slave system are mirrored onto the master system.

摘要翻译： 记录介质二次化系统的主控制器在电源接通时读取三种类型的信息：指示是否可以使用介质的USE信息（每个介质板的记录介质的状态信息） 指示在活动系统中使用哪个记录介质的ACT信息; PWON信息表示记录介质的电源是否被接通，主控制器设定信息以表示主系统是活动系统，并执行镜像处理，由此使用信息和从属设备的PWON信息 系统与主系统相同。 当发现主系统的记录介质被删除时，基于USE和ACT信息，从系统被切换到活动系统，并执行相应的信息设置。 当发现主系统的记录介质被安装时，基于PWON信息，从系统的USE信息和PWON信息被镜像到主系统上。