INFORMATION TERMINAL DEVICE AND TOUCH COORDINATE DETERMINATION METHOD

• US 20140071084A1
• Filed: 07/08/2013
• Published: 03/13/2014
• Est. Priority Date: 09/12/2012
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Sugiura, Yohei
• Granted Patent: US 9,323,382 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 3/04186 Touch location disambiguation
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A mobile terminal device includes an electrostatic touch panel, a resistive touch panel, a memory, and a processor connected to the memory. The processor acquires a touch coordinate detected on at least one of the electrostatic touch panel and the resistive touch panel and determines a touch mode including the presence or absence of strong touch at equal to or higher than a predetermined pressure based on the acquired touch coordinate. Then, the processor specifies a touch coordinate at which the strong touch is made when a touch mode with the strong touch is determined and the touch coordinate is detected on each of the electrostatic touch panel and the resistive touch panel.

Claims

1. An information terminal device comprising:

a first touch panel that is configured to detect a touch coordinate with an electrostatic capacitance system;

a second touch panel that is provided so as to be superimposed on the first touch panel and is configured to detect a touch coordinate with a resistance film system;

a memory; and

a processor connected to the memory, wherein

the processor executes a process comprising;

acquiring a touch coordinate detected on at least one of the first touch panel and the second touch panel;

determining a touch mode including presence or absence of strong touch at equal to or higher than a predetermined pressure based on the acquired touch coordinate; and

specifying a touch coordinate at which the strong touch is made when a touch mode with the strong touch is determined and the touch coordinate is detected on each of the first touch panel and the second touch panel.

2. The information terminal device according to claim 1, wherein the determining includes:

first determining whether a distance between the touch coordinate detected on the first touch panel and the touch coordinate detected on the second touch panel is equal to or larger than a predetermined value; and

second determining whether the strong touch is made at only one place based on a result of the first determining.

3. The information terminal device according to claim 2, wherein the second determining includes determining that strong touch with a conductor is made at only one place when the distance between the touch coordinate detected on the first touch panel and the touch coordinate detected on the second touch panel is smaller than the predetermined value.

4. The information terminal device according to claim 3, wherein the specifying includes specifying that the strong touch is made at only the touch coordinate detected on the first touch panel and of which distance to the touch coordinate detected on the second touch panel is smaller than the predetermined value.

5. The information terminal device according to claim 1, wherein the determining includes:

third determining whether a detection range of the touch coordinate detected on the first touch panel and the touch coordinate detected on the second touch panel are overlapped; and

forth determining whether the strong touch is made at a plurality of places based on a result of the third determining.

6. The information terminal device according to claim 5, wherein the forth determining includes determining that strong touch with a conductor is made at a plurality of places when the detection range of the touch coordinate detected on the first touch panel and the touch coordinate detected on the second touch panel are overlapped.

7. The information terminal device according to claim 6, wherein the specifying includes specifying that the strong touch is made at a combination of touch coordinates, among a plurality of combinations of touch coordinates detected on the first touch panel, in which a representative point obtained from the combination of the touch coordinates is closest to the touch coordinate detected on the second touch panel.

8. The information terminal device according to claim 5, wherein the forth determining includes determining that strong touch with an insulator is made in a state where a hand makes contact with the first touch panel when the detection range of the touch coordinate detected on the first touch panel and the touch coordinate detected on the second touch panel are not overlapped.

9. The information terminal device according to claim 8, wherein the specifying includes:

calculating a correction factor based on an area of a detection region corresponding to the touch coordinate detected on the first touch panel; and

specifying that the strong touch is made at a coordinate obtained by correcting the touch coordinate detected on the second touch panel by using the correction factor.

10. A touch coordinate determination method comprising:

acquiring a touch coordinate detected on at least one of a first touch panel that is configured to detect a touch coordinate with an electrostatic capacitance system and a second touch panel that is provided so as to be superimposed on the first touch panel and configured to detect a touch coordinate with a resistance film system;

determining a touch mode including presence or absence of strong touch at equal to or higher than a predetermined pressure based on the acquired touch coordinate; and

specifying a touch coordinate at which the strong touch is made when a touch mode with the strong touch is determined and the touch coordinate is detected on each of the first touch panel and the second touch panel.

11. A computer-readable recording medium having stored therein a touch coordinate determination program that causes a computer to execute a process comprising:

acquiring a touch coordinate detected on at least one of a first touch panel that is configured to detect a touch coordinate with an electrostatic capacitance system and a second touch panel that is provided so as to be superimposed on the first touch panel and configured to detect a touch coordinate with a resistance film system;

determining a touch mode including presence or absence of strong touch at equal to or higher than a predetermined pressure based on the acquired touch coordinate; and

specifying a touch coordinate at which the strong touch is made when a touch mode with the strong touch is determined and the touch coordinates is detected on each of the first touch panel and the second touch panel.