Method and device for analyzing positions
First Claim
1. A method for analyzing positions in mutual-capacitance detection, comprising:
- obtaining a touch sensitive information from a plurality of sensors corresponding to at least one external object touching or approaching a first signal source;
when the touch sensitive information including a first portion corresponding to a first characteristic and a second portion corresponding to a second characteristic, and the first characteristic being opposite to the second characteristic, analyzing the portion of the second characteristic to determine if there is a third portion corresponding to a third characteristic, wherein the third portion corresponds to the at least one external object touching or approaching the first signal source; and
analyzing from the third portion a position corresponding to a touch or approach of the at least one external object in the third portion.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.
46 Citations
20 Claims
-
1. A method for analyzing positions in mutual-capacitance detection, comprising:
-
obtaining a touch sensitive information from a plurality of sensors corresponding to at least one external object touching or approaching a first signal source; when the touch sensitive information including a first portion corresponding to a first characteristic and a second portion corresponding to a second characteristic, and the first characteristic being opposite to the second characteristic, analyzing the portion of the second characteristic to determine if there is a third portion corresponding to a third characteristic, wherein the third portion corresponds to the at least one external object touching or approaching the first signal source; and analyzing from the third portion a position corresponding to a touch or approach of the at least one external object in the third portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A device for analyzing positions in mutual-capacitance detection, comprising:
-
a sensing device including a plurality of sensors; and a controller for performing at least the following operations; obtaining a touch sensitive information from the plurality of sensors corresponding to at least one external object touching or approaching a first signal source; when the touch sensitive information including a first portion corresponding to a first characteristic and a second portion corresponding to a second characteristic, and the first characteristic being opposite to the second characteristic, analyzing the portion of the second characteristic to determine if there is a third portion corresponding to a third characteristic, wherein the third portion corresponds to the at least one external object touching or approaching the first signal source; and analyzing from the third portion a position corresponding to a touch or approach of the at least one external object in the third portion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
performing the first zero-crossing position analysis starting from each second initial position in a second range in a second direction, wherein a zero-crossing analyzed by the first zero-crossing position analysis is a position corresponding to the third characteristic, and the first range and the second range do not include the first portion and the portion apart from the third portion in the second portion.
-
-
19. The method of claim 18, wherein the controller further includes performing the following operation:
analyzing from the first portion a position corresponding to the at least one external object touching or approaching the first signal source.
-
20. The method of claim 19, wherein the analyzing of the position in the first portion includes:
-
determining at least a third initial position in the touch sensitive information based on the first threshold; determining at least a fourth initial position in the touch sensitive information based on the second threshold; performing a second zero-crossing position analysis starting from each third initial position in a third range in a second direction; and performing the second zero-crossing position analysis starting from each fourth initial position in a fourth range in a first direction, wherein a zero-crossing analyzed by the second zero-crossing position analysis is a position corresponding to the first characteristic, and the third range and the fourth range do not include the second portion.
-
Specification