Display system using system level resources to calculate compensation parameters for a display module in a portable device

A method of operating an electronic device including, a display module integrated in the electronic device including an electronic video display and one or more sub-modules, each only using display level resources of the display module, and at least one processing unit, included in a system module physically arranged on one or more substrates communicatively coupled to and separate from the display module, the method comprising:

• performing by at least one sub-module of said one or more sub-modules, control of a process of measuring signals from pixels;
• executing at the at least one processing unit, system level applications of the electronic device;
• and
• performing at the at least one processing unit, as part of generating new compensation parameters, control of the process of measuring signals from pixels using system level resources of the one or more substrates distinct from the display level resources.