Patent ID: 8423801
Filing Date: 2013-04-16
Classification: H04N

Abstract:
1. An electronic device comprising: an external-memory-medium installing portion in which an external memory medium that can store contents data; a display portion configured to be operable to display the contents data stored in the external memory medium; a sound generating portion configured to generate a sound; a power-shut-down-requirement receiving portion configured to receive a requirement for shutting-down a power supply to the electronic device; a contents-data-display commanding portion configured to command the display portion to display the contents data stored in the external memory medium; a monitoring portion configured to determine whether the external memory medium is installed in the external-memory-medium installing portion; a judging portion configured to judge whether certification information related to the contents data stored in the external memory medium is present whenever the monitoring portion has determined that the external memory medium is installed in the external-memory-medium installing portion; a first sound-generation commanding portion configured to command the sound generating portion to generate an alarming sound when the monitoring portion has determined that the external memory medium is not installed in the external-memory-medium installing portion and when the judging portion has judged that the certification information is present; and a power supply control portion configured to inhibit an operation to shut down the power supply to the electronic device when the power-shut-down-requirement receiving portion has received said requirement for shutting down the power supply and when the judging portion has judged that the certification information is present, wherein the certification information is stored in the external memory medium in which the contents data are stored.