MULTI-TOUCH DETECTING METHOD FOR DETECTING LOCATIONS OF TOUCHED POINTS ON A TOUCH PANEL
First Claim
1. A multi-touch detecting method adapted for detecting touched points on a touch panel, the touch panel including first and second conductive films insulated from each other and coupled electrically to each other through touch, the first conductive film exhibiting electric anisotropy, and having a lower resistivity in a first direction, the multi-touch detecting method comprising:
- applying a first voltage to the first conductive film;
applying a second voltage greater than the first voltage to the second conductive film;
obtaining a first local maximum voltage, a second local maximum voltage and a local minimum voltage from voltages measured at a plurality of different measuring points of the first conductive film, the measuring point corresponding to the local minimum voltage being located between the measuring point corresponding to the first local maximum voltage and the measuring point corresponding to the second local maximum voltage;
determining a first location of the touched points in a second direction transverse to the first direction based on a location of the measuring point corresponding to the first local maximum voltage in the second direction; and
determining a second location of the touched points in the second direction based on a location of the measuring point corresponding to the second local maximum voltage in the second direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A multi-touch detecting method is adapted for detecting touched points on a touch panel that includes first and second conductive films. The first conductive film exhibits electric anisotropy, and has a lower resistivity in a first direction. The multi-touch detecting method includes: applying a first voltage to the first conductive film; applying a second voltage greater than the first voltage to the second conductive film; measuring sequentially voltages at different measuring points of the first conductive film; obtaining a first local maximum voltage, a second local maximum voltage and a local minimum voltage from the measured voltages; determining a first location of the touched points based on a location of the measuring point corresponding to the first local maximum voltage; and determining a second location of the touched points based on a location of the measuring point corresponding to the second local maximum voltage.
-
Citations
14 Claims
-
1. A multi-touch detecting method adapted for detecting touched points on a touch panel, the touch panel including first and second conductive films insulated from each other and coupled electrically to each other through touch, the first conductive film exhibiting electric anisotropy, and having a lower resistivity in a first direction, the multi-touch detecting method comprising:
-
applying a first voltage to the first conductive film; applying a second voltage greater than the first voltage to the second conductive film; obtaining a first local maximum voltage, a second local maximum voltage and a local minimum voltage from voltages measured at a plurality of different measuring points of the first conductive film, the measuring point corresponding to the local minimum voltage being located between the measuring point corresponding to the first local maximum voltage and the measuring point corresponding to the second local maximum voltage; determining a first location of the touched points in a second direction transverse to the first direction based on a location of the measuring point corresponding to the first local maximum voltage in the second direction; and determining a second location of the touched points in the second direction based on a location of the measuring point corresponding to the second local maximum voltage in the second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A multi-touch detecting method adapted for detecting touched points on a touch panel, the touch panel including first and second conductive films insulated from each other and coupled electrically to each other through touch, the second conductive film exhibiting electric anisotropy, and having a lower resistivity in a certain direction, the multi-touch detecting method comprising:
-
applying a first voltage to the first conductive film; applying a second voltage greater than the first voltage to the second conductive film; measuring sequentially voltages at different measuring points of the second conductive film; obtaining a first local minimum voltage, a second local minimum voltage and a local maximum voltage from the voltages measured at the different measuring points of the second conductive film, the measuring point corresponding to the local maximum voltage being located between the measuring point corresponding to the first local minimum voltage and the measuring point corresponding to the second local minimum voltage; determining a first location of the touched points based on a location of the measuring point corresponding to the first local minimum voltage; and determining a second location of the touched points based on a location of the measuring point corresponding to the second local minimum voltage. - View Dependent Claims (12, 13, 14)
-
Specification