Patent ID: 11924519
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A display device coupled to a settop box, the display device comprising:
a transceiver configured to communicate to and receive communication from an external device and the settop box;
a display configured to display a content included in a broadcast signal received from the settop box at a screen;
a sensor configured to sense a brightness of the display; and
a controller configured to control at least one of the transceiver, the display, or the sensor,
wherein the controller is further configured to:
control the display to display the content;
control the display to decrease the brightness of the display from a default brightness value to a first brightness value for a first brightness decrease time based on a brightness of a fixed region of a whole display region being maintained at a brightness level that exceeds a prescribed brightness over a first prescribed time, wherein a fixed content received from the settop box is continuously displayed at the fixed region over the first prescribed time;
control the display to increase the brightness of the display from the first brightness value to the default brightness value based on a first signal being received at the settop box from the external device within a second prescribed time, the first signal requesting changing the screen from a first screen comprising a settop box menu screen to a second screen comprising a live screen; and
control the display to decrease the brightness of the display from the first brightness value to a second brightness value for a second brightness decrease time based on the sensed brightness of the fixed region being maintained over the second prescribed time while the first signal is not received at the settop box from the external device.