Method and system for enabling touch controller to be adaptive to capacitive touch sensor

摘要

A method and a system for enabling a touch controller to be adaptive to a capacitive touch sensor are disclosed. The method may include: step A in which the touch controller detects and samples all the capacitors in the sensor model identification circuit and parses the sampled data; and step B in which the touch sensor selects parameters corresponding to a sensor model in accordance with a parsing result of step A to perform touch detection processing to the capacitive touch sensor. The disclosed methods and systems which are easy to implement and have lower cost can be applied in various digital products with capacitive touch screens, which not only facilitates replacing touch panel modules with different models or supplied by different suppliers, but also can ensure ideal touch detection results.

主权项

1. A method for enabling a touch controller to be adaptive to a capacitive touch sensor, the capacitive touch sensor connected to a capacitor-based sensor model identification circuit, the method comprising:
step A in which the touch controller detects and samples all the capacitors in the sensor model identification circuit and parses the sampled data; and step B in which the touch sensor selects parameters corresponding to a sensor model in accordance with a parsing result of step A to perform touch detection processing to the capacitive touch sensor, wherein step A comprises: step A1 in which the touch controller identifies a largest value from relative capacitance data obtained by sampling and format-converts the largest value according to a preset number of grades; step A2 in which remaining relative capacitance data other than the largest value are format-converted according to the preset number of the grades and a difference between the remaining relative capacitance data and the largest value; and step A3 in which a model of the current capacitive touch sensor is obtained according to code values resulted from format-converting all the relative capacitance data and correspondence between preset code values and sensor models.