Patent ID: 11902699
Assignee: CASIO COMPUTER CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 12:
13. A control method of a display device including a power key and at least one processor, the method being executed by the at least one processor, and the method comprising:
detecting a user operation of the power key in a state in which a light source is not turned on;
turning on the light source in response to detecting the user operation of the power key;
after turning on the light source and in response to detecting the user operation of the power key, determining whether a power supply supplying power is a battery power supply or an external commercial power supply;
displaying, in response to detecting the user operation of the power key and in response to a determination that the power supply supplying power is the battery power supply, a power-on continuation confirmation screen to prompt a user to enter a confirmation operation to continue lighting the light source;
detecting whether a user enters the confirmation operation to continue lighting the light source; and
continuing, in response to detecting the confirmation operation from the user, lighting of the light source,
wherein the method further comprises skipping the displaying of the power-on continuation confirmation screen and continuing the lighting of the light source, in response to a determination that the power supply supplying power is the external commercial power supply.