TOUCH PANEL SYSTEM AND ELECTRONIC DEVICE

• US 20160070371A1
• Filed: 03/31/2014
• Published: 03/10/2016
• Est. Priority Date: 04/25/2013
• Status: Active Grant

• Current Assignee: Wacom Co Limited (Wacom)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: OONISHI, Yoshinori, ISHIKAWA, Takashi
• Granted Patent: US 9,798,397 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells

Abstract

Pen pressure can be controlled in detail only by a positional detection controlling side of a touch panel. Thus, pen pressure data will not be required to be transmitted from a touch pen to the touch panel, the touch pen itself will require no batteries, and neither the touch pen nor the touch panel requires a communication apparatus, thus reducing the weight of the touch pen itself and reducing the size thereof. Comprised is a touch panel system for measuring output signals of at least two adjacent sensor lines to obtain an input position (x, y) of an indicator and information (z) of a capacitance value from a difference value therebetween; comprising a pen pressure converting section 616D for converting the information (z) of the capacitance value into pen pressure data, wherein the input position (x, y) and the pen pressure data are transmitted to a drawing controlling section.

Claims

1. A touch panel system for measuring output signals of at least two adjacent sensor lines to obtain an input position (x, y) of an indicator and information (z) of a capacitance value from a difference value between the output signals of at least two adjacent sensor lines,

the touch panel system comprising a pen pressure converting section for converting the information (z) of the capacitance value into pen pressure data, wherein the input position (x, y) and the pen pressure data are transmitted to a drawing controlling section.

3. The touch panel system according to claim 1, wherein the pen pressure converting section converts information (z) of a region capacitance value measured in accordance with the contacting or approaching of the indicator to the touch panel into pen pressure data by referring to one or a plurality of tables.

4. The touch panel system according to claim 3, wherein the table stores pen pressure data to be corrected in accordance with the indicator, wherein the pen pressure data with regard to the information (z) of the region capacitance value changes in a two-dimensional function manner at a predetermined inclination.

5. The touch panel system according to claim 3, wherein:

the plurality of tables store the pen pressure data with regard to the information (z) of the region capacitance value;

the information (z) of the region capacitance value is divided into a plurality of sections; and

inclination of the pen pressure data with regard to the information (z) of the region capacitance value is determined and linearly changed for each section of the information (z) of the region capacitance value.

6. An electronic device capable of performing a positional input with a touch panel system according to claim 1.

2. A touch panel system, comprising the steps of:

applying a signal to a drive line;

obtaining capacitance value (z) information, in addition to an input position (x, y) information of an indicator from a difference value between output signals obtained from at least two adjacent sensor lines;

converting a region capacitance value (z) obtained from the three-dimensional coordinates (x, y, z) into pen pressure data; and

transmitting the converted pen pressure data to a host terminal.

7. The touch panel system according to claim 2, wherein the pen pressure converting section converts information (z) of a region capacitance value measured in accordance with the contacting or approaching of the indicator to the touch panel into pen pressure data by referring to one or a plurality of tables.

8. The touch panel system according to claim 7, wherein the table stores pen pressure data to be corrected in accordance with the indicator, wherein the pen pressure data with regard to the information (z) of the region capacitance value changes in a two-dimensional function manner at a predetermined inclination.

9. The touch panel system according to claim 7, wherein:

the plurality of tables store the pen pressure data with regard to the information (z) of the region capacitance value;

the information (z) of the region capacitance value is divided into a plurality of sections; and

inclination of the pen pressure data with regard to the information (z) of the region capacitance value is determined and linearly changed for each section of the information (z) of the region capacitance value.

10. An electronic device capable of performing a positional input with a touch panel system according to claim 2.