Image display apparatus that irradiates light to an object placed thereon and displays a graphical user interface and control method therefor

A control method for an image-display apparatus, the image-display apparatus comprising:

• a display screen;
• a plurality of light-emitting units arranged to emit light behind a rear surface of the display screen;
• and
• a plurality of light sensors provided at different positions behind the rear surface of the display screen to detect light including light emitted from at least one light-emitting unit and light reflected from an object placed on a front surface of the display screen, and to output at least a first detection value at a first time and a second detection value at a second time,
• the control method comprising:
• lighting the display screen with at least one light-emitting unit;
• detecting light received by the plurality of light sensors;
• each light sensor outputting a first detection value when the image-display apparatus does not have an object placed on it and a second detection value when the image-display apparatus does have an object placed on it;
• receiving detection values from each light sensor;
• determining a position of an object region of the display screen on which the object is placed on the basis of a difference between the first and second detection values output from the plurality of light sensors;
• and
• causing at least one light-emitting unit in the object region to emit light with a greater brightness than other regions, wherein
• a GUI (Graphical User Interface) image including a menu, which receives an instruction from a user, is displayed on the display screen, and
• light emitted from at least one light-emitting unit is irradiated to the object on the display screen.

An image-display apparatus comprising:

• a display screen;
• a plurality of light-emitting units arranged to emit light behind a rear surface of the display screen;
• a plurality of light sensors provided at different positions behind the rear surface of the display screen to detect light emitted from at least one light-emitting unit and light reflected from an object placed on a front surface of the display screen, and to output at least a first detection value and a second detection value;
• a determination unit configured to determine, based on a difference between the first and second detection values output by the plurality of light sensors, a position of an object region of the display screen on which the object is placed;
• and
• a control unit configured to cause light-emitting units arranged in the object region to emit light with greater brightness than light-emitting units arranged outside of the object region, wherein
• a GUI (Graphical User Interface) image including a menu, which receives an instruction from a user, is displayed on the display screen.

A control method for an image-display apparatus, the image-display apparatus comprising:

• a display screen;
• a plurality of light-emitting units arranged to emit light behind a rear surface of the display screen;
• and
• a plurality of light sensors provided at different positions behind the rear surface of the display screen to detect light emitted from at least one light-emitting unit and light reflected from an object placed on a front surface of the display screen, and to output at least a first detection value and a second detection value,
• the control method comprising:
• lighting the display screen with at least one light-emitting, unit;
• detecting light received by the plurality of light sensors;
• receiving, detection values from each light sensor;
• determining a position of an object region of the display screen on which the object is placed on the basis of a difference between the first and second detection values output from the plurality of light sensors;
• and
• causing light-emitting units arranged in the object region to emit light with greater brightness than light-emitting units arranged outside of the object region, wherein
• a GUI (Graphical User Interface) image including a menu, which receives an instruction from a user, is displayed on the display screen.