Method and apparatus for improving touch sensitivity of touch screen panel
First Claim
1. A method for improving touch sensitivity in an electronic device having a capacitive type touch screen panel, the method comprising:
- sequentially driving a plurality of transmitting channels of the touch screen panel using a predetermined scan frequency;
determining a number of adjacently touched receiving channels of a plurality of receiving channels by simultaneously scanning a plurality of receiving channels of the touch screen panel;
specifying a scan unit to be used for dividing the plurality of receiving channels into groups on the basis of the number of adjacently touched receiving channels and for sequentially scanning the groups of the receiving channels;
determining a touch coordinate by sequentially scanning the plurality of receiving channels using the specified scan unit;
newly specifying the predetermined scan frequency based on the number of adjacently touched receiving channels; and
sequentially driving the plurality of transmitting channels using the newly specified scan frequency,wherein the newly specifying of the scan frequency includes multiplying the predetermined scan frequency by the number of adjacently touched receiving channels.
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Accused Products
Abstract
A method and an apparatus for improving touch sensitivity of a capacitive type touch screen panel are provided. In the method, the apparatus sequentially drives a plurality of transmitting channels of the touch screen panel using a predetermined scan frequency. The apparatus determines a sequential touch count by simultaneously scanning a plurality of receiving channels of the touch screen panel wherein the sequential touch count is the number of sequentially touched receiving channels. Also, the apparatus specifies a scan unit to be used for dividing the plurality of receiving channels into groups on the basis of the sequential touch count and for sequentially scanning the groups of the receiving channels. The apparatus determines a touch coordinate by sequentially scanning the plurality of receiving channels using the specified scan unit.
21 Citations
15 Claims
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1. A method for improving touch sensitivity in an electronic device having a capacitive type touch screen panel, the method comprising:
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sequentially driving a plurality of transmitting channels of the touch screen panel using a predetermined scan frequency; determining a number of adjacently touched receiving channels of a plurality of receiving channels by simultaneously scanning a plurality of receiving channels of the touch screen panel; specifying a scan unit to be used for dividing the plurality of receiving channels into groups on the basis of the number of adjacently touched receiving channels and for sequentially scanning the groups of the receiving channels; determining a touch coordinate by sequentially scanning the plurality of receiving channels using the specified scan unit; newly specifying the predetermined scan frequency based on the number of adjacently touched receiving channels; and sequentially driving the plurality of transmitting channels using the newly specified scan frequency, wherein the newly specifying of the scan frequency includes multiplying the predetermined scan frequency by the number of adjacently touched receiving channels. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for improving touch sensitivity, the apparatus comprising:
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a capacitive type touch screen panel having a plurality of transmitting and receiving channels; and a control unit configured to; sequentially drive the plurality of transmitting channels using a predetermined scan frequency, determine a number of adjacently touched receiving channels by simultaneously scanning the plurality of receiving channels wherein the number of adjacently touched receiving channels is the number of adjacently arranged receiving channels being touched, specify a scan unit on the basis of the number of adjacently touched receiving channels, determine a touch coordinate by sequentially scanning the plurality of receiving channels using the specified scan unit, newly specify the scan frequency based on the number of adjacently touched receiving channels, and sequentially drive the plurality of transmitting channels using the newly specified scan frequency, wherein the newly specified scan frequency is a scan frequency multiplied by the number of adjacently touched receiving channels. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification