METHOD AND CONTROLLER FOR DETECTING TOUCH OR PROXIMITY

摘要

When at least one external object approaches or touches a touch sensor, profiles in a scanning signal corresponding to each external object will appear. The smallest value between the profiles corresponding to a first and a second external object is designated as a division value when the profiles corresponding to the first and the second external objects overlap. The overlapping profiles can be divided into the portion of the first external object and the portion of the second external object, respectively.

主权项

1. A controller for detecting touch or proximity, executing the following steps:
obtaining a 1D sensing information comprising continuous positive values based on signals of a touch sensor; designating a relative minimum as a division value to identify a first sub profile and a second sub profile if the continuous positive values comprise the relative minimum between a first relative maximum and a second relative maximum, wherein the first sub profile includes the first relative maximum but excludes the division value, and the second relative maximum includes the second relative maximum but excludes the division value; and determining a first proportion and a second proportion in the division value based on the ratios of a first value and a second value, wherein the first value comprises at least the value of the first sub profile closest to the division value and greater than a first threshold, and the second value comprises at least the value of the second sub profile closest to the division value and greater than a second threshold.