Patent ID: 8332957
Filing Date: 2012-12-11
Classification: G06F

Abstract:
1. A storage device comprising: a nonvolatile storage configured to store data; a first timer section configured to count up to a first predetermined time period and to output a first count-up signal at an end of the first predetermined time period, the first timer section being configured to commence first clocking operation by means of taking, as a trigger, completion of use of the storage device by an authorized user, and to suspend the first clocking operation by means of taking, as a trigger, initiation of use of the storage device by the authorized user; a second timer section configured to count up to a second predetermined time period shorter than the first predetermined time period and to output a second count-up signal at an end of the second predetermined time period, the second timer section being configured to commence second clocking operation by means of taking, as a trigger, unauthorized removal of the storage device from a predetermined information processor, and to suspend the second clocking operation by means of taking, as a trigger, initiation of use of the storage device by the authorized user; and a controller configured to erase the data stored in the nonvolatile storage by means of at least either of the first count-up signal output from the first timer section and the second count-up signal output from the second timer section.