TOUCH SENSING SYSTEM AND METHOD OF CONTROLLING POWER CONSUMPTION THEREOF

摘要

A touch sensing system and a method of controlling power consumption thereof are disclosed. The touch sensing system includes a plurality of sensing units, which sample a voltage received from a touch screen and accumulate the sampled voltage, and a plurality of analog-to-digital converters converting an output of the sensing units into digital data. The sensing units and the analog-to-digital converters are divided into a plurality of groups in an idle state. Each of the plurality of groups includes at least two sensing units and one analog-to-digital converter. At least one sensing unit included in at least one group is powered down in the idle state. An analog-to-digital converter is powered on during the group it belongs to is powered on.

主权项

1. A touch sensing system, comprising:
a plurality of sensing units configured to sample a voltage received from a touch screen and accumulate a sampled voltage; and a plurality of analog-to-digital converters configured to convert an output of the sensing units into digital data, wherein the sensing units and the analog-to-digital converters are divided into a plurality of groups and driven in a time division manner, wherein each of the plurality of groups includes at least one of the sensing units and at least one of the analog-to-digital converters, wherein one of sensing units that is included in a group other than a group that is powered on is powered down, and wherein the plurality of groups are powered on, on a per group basis.