Patent ID: 11868190
Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. The display device according to claim 1, wherein
the voltage detection circuit compromises a circuit comprising:
a DC-DC converter that converts a voltage value of the power supplied from the external device via the predetermined connector to generate the reference voltage;
a resistance voltage divider circuit that generates a voltage corresponding to the reference voltage by dividing, in proportion to resistances, the voltage value of the power supplied from the external device via the predetermined connector; and
a voltage comparison comparator that compares the reference voltage with the voltage corresponding to the reference voltage, and when the voltage corresponding to the reference voltage becomes equal to or lower than the reference voltage, outputs an output signal indicating a state in which the second switch is turned on.