Devices and methods for controlling proximity sensing in input-display device

A proximity sensing controller, comprising:

• a display driver interface circuit configured to:
• receive an output vertical sync signal from a display driver configured to drive a display panel according to display information, the display panel defining a sensing region and including a first display area and a second display area, and
• retrieve the display information encoded in the output vertical sync signal,
• wherein a first display frame rate for the first display area and a second display frame rate for the second display area are set to different frame rates based on respective contents displayed in the first and second display areas;
• a proximity sensing circuit configured to generate positional information of an input object based at least in part on a resulting signal received from a sensor electrode disposed in the sensing region;
• and
• a control circuit configured to control an operation of the proximity sensing circuit based at least in part on the display information, wherein a proximity sensing report rate corresponding to a portion of the sensing region corresponding to the first display area is lower than a proximity sensing report rate corresponding to a portion of the sensing region corresponding to the second display area.

A method, comprising:

• driving, by a display driver, a display panel according to display information, the display panel defining a sensing region, wherein the display panel includes a first display area and a second display area, and wherein driving the display panel comprises setting a first display frame rate for the first display area and a second display frame rate for the second display area, wherein the first display frame rate is higher than the second display frame rate, and wherein the first and second display frame rates are set based on respective contents displayed in the first and second display areas;
• encoding the display information in an output vertical sync signal, wherein the encoded display information comprises an encoding of the display mode;
• transmitting the output vertical sync signal from the display driver to a proximity sensing controller configured to generate positional information of an input object based at least in part on a resulting signal received from a sensor electrode disposed in the sensing region;
• and
• controlling an operation of the proximity sensing controller based at least in part on the display information, wherein a proximity sensing report rate corresponding to a portion of the sensing region corresponding to the first display area is lower than a proximity sensing report rate corresponding to a portion of the sensing region corresponding to the second display area.