Medium controller with slot-mounted sensors

Details Medium controller with slot-mounted sensors Medium controller with slot-mounted sensors

2005-07-12

2005-07-12

Psitos, Aristotelis M. (Department: 2653)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S030270

Reexamination Certificate

active

06917570

ABSTRACT:
When a medium is stored or removed manually, all slots must be checked to find any change in medium information, and as a result, updating medium storage information takes a long time. A medium controller, having a plurality of media and a medium transfer unit to take a medium in and out of storage and move the medium for reading or writing information, includes slots in which media are stored, sensors each mounted in a slot for detecting whether there is a medium in the slot; a sensor manager for holding a log of the status transitions of the sensors in a period when media are likely to be stored or removed manually and deciding the status transitions; and a part for reading information. Only when it is decided from a decision result of the sensor manager that the medium has been replaced, the media controller causes the part for reading medium information to read medium information in order to update the medium storage information.

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