BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates to a display apparatus, a display system and a controlling method of a display apparatus.

Description of the Background Art

Conventionally, a display apparatus has been known that decreases a drive electric current that is supplied to light emitting elements of the display apparatus when a voltage of power supplied from a battery is a threshold value or smaller. Moreover, for example, a technology has been known that decreases luminance of an organic electroluminescence display to move the display into a power saving mode when a battery voltage of a mobile device, such as a smartphone and a tablet device, is low.

In a case of a display apparatus that includes a loudspeaker, the loudspeaker consumes an electric current in addition to the display. Therefore, even if the display is changed into the power saving mode, when an output from the loudspeaker is high, an electric current consumption may not be decreased enough. Especially, in the display apparatus that is supplied with power by a wire harness, an electric current greater than an allowable electric current should not flow in the wire harness. When the output from the loudspeaker is high even in the power saving mode, the electric current greater than the allowable electric current may flow in the wire harness. Moreover, the frequent change into the power saving mode causes frequent decrease in luminances of the images so that there is a possibility that a user of the display apparatus may feel difficult to watch the images.

SUMMARY OF THE INVENTION

According to one aspect of the invention, a display apparatus includes a display, a loudspeaker and a controller. The controller is configured to: perform, based on one or both of (i) image information of an image that is displayed on the display, and (ii) sound information of sound that is output from the loudspeaker, electric current control processing that controls a sum of an electric current to be supplied to the display and an electric current to be supplied to the loudspeaker.

An object of this invention is to provide a technology that prevents an electric current flow greater than an allowable electric current in a wire harness for a display apparatus that is supplied with power by the wire harness.

These and other objects, features, aspects and advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

