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Multi-touch sensing device and method

A multi-touch and input device technology, applied in the direction of pulse technology, instruments, electronic switches, etc., can solve the problem of not being able to save costs

Active Publication Date: 2015-09-09
WACOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous approaches did not adequately address these issues and were not cost effective

Method used

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  • Multi-touch sensing device and method

Examples

Experimental program
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Embodiment Construction

[0025] Various devices including some form of man-machine interface (MMI: man to machine interface) are widely used in various situations. There are many forms of MMI, for example, the interactive panel / touch panel on various devices such as the keyboard of the user to the device (such as the keyboard of the computer, the fuel pump of the self-service, the self-service boarding terminal of the airport, etc.) ) to provide information and obtain information from the device. The popularity of MMI, enabled by touch-sensitive input devices in which a user interacts with a device using a finger or other means such as a stylus for pointing a location on the device by the user, is increasing. Many more host devices have MMIs that at least partially include touch-sensitive input devices.

[0026] In order to detect the interaction between the touch-sensitive input device and the user, a signal is applied sequentially to the conductors of the conductor pattern. In one embodiment, the ...

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Abstract

A device and method for detecting actual touch points (514,516) in a multi-touch input device (202). Embodiments include a measurement sharing device (504) configured to combine a measurement of an electrical characteristic on a first axis (X) with a measurement of an electrical characteristic on a second axis (Y). The combined measurement is compared with electrical characteristics measured separately on each axis to determine which intersections (514,516,518,520) correspond to actual touch points (514,516).

Description

technical field [0001] The invention relates to a multi-touch sensing device and method. Background technique [0002] Touch panel technology is relatively new in the field of display devices for stationary and mobile devices. A conventional method is to arrange lines in a pattern at a lower position of a touch panel capable of detecting a user's touch, and to repeatedly monitor a signal indicating the coordinates of the touched position. Early systems were designed to detect one contact at a time. However, there is increasing emphasis on developing touch panel technologies that can accurately detect multiple simultaneous contacts. In the conventional technology for multi-finger contact, the voltage of the row or column of the grid of conductors is charged and discharged, and the change of the electric charge at the time of contact is detected, thereby functioning correctly. [0003] In distinguishing the actual contact position obtained by the user touching the touch pan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
CPCG06F2203/04104G06F3/0416G06F3/044G06F3/04166G06F3/0445H03K17/962G06F2203/04111
Inventor 查尔斯·A·沃特伯里
Owner WACOM CO LTD