Touch sensing

A touch sensing system, comprising:

• a touch panel;
• a first distributed controller at a first position relative to the touch panel;
• a second distributed controller at a second position relative to the touch panel;
• and
• a touch controller configured to:
• detect a touch event on the touch panel;
• establish a first communication channel with the first distributed controller;
• establish a second communication channel with the second distributed controller;
• evaluate the first communication channel and the second communication channel to identify one of the first position or the second position as an initiating position for the touch event;
• and
• control the touch panel based on the initiating position.

A touch controller, comprising:

• touch sensor array terminals;
• a transmit sequencer configured to:
• generate a transmit signal selectively connectable to the touch sensor array terminals;
• and
• generate an excitation signal on the touch sensor array terminals;
• an analog-to-digital-converter module selectively connectable to the touch sensor array terminals to measure responses to the transmit signal;
• and
• a processor configured to:
• detect a touch event based on the responses to the transmit signal;
• receive a first signal responsive to the excitation signal and associated with a first position relative to the touch sensor array terminals;
• receive a second signal responsive to the excitation signal and associated with a second position relative to the touch sensor array terminals;
• identify one of the first position or the second position as an initiating position for the touch event based on the first signal and the second signal;
• and
• generate a control signal based on the initiating position.