According to the U.S. Trademark and Patent Office (USPTO) publicized list, Apple today obtained a technology patent, the name of the “touch input device cover layer detection”, which simply means that the detection of the iPhone or iPad whether there is a film, and then through the action compensation to improve the interaction.
Apple in the patent a complete overview of the method and system for detecting whether the device is coated with a film, and can be on the iPhone, iPad and other digital devices, according to whether there is a film to dynamically adjust.
Note: Many consumers choose to apply a film to their iPhone, iPad devices for protection and other factors, which can lead to subtle distortions in the image produced by the screen, and can alter the light on the display in small but perceptible ways.
Apple in the patent outlines the whole optical system to detect whether the screen is laminated, and includes a set of processing units, connectors, sensors, including the system, and can communicate with the screen to adjust the screen display effect.