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Using Multidimensional Multifinger Search with Range Oversampling Hill Climbing and Hill Descent

A finger, hill-climbing algorithm for detecting and tracking multiple targets

Active Publication Date: 2018-10-02
CIRQUE CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are also "minima" in the lower part of the curve that are not detected

Method used

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  • Using Multidimensional Multifinger Search with Range Oversampling Hill Climbing and Hill Descent
  • Using Multidimensional Multifinger Search with Range Oversampling Hill Climbing and Hill Descent
  • Using Multidimensional Multifinger Search with Range Oversampling Hill Climbing and Hill Descent

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Embodiment Construction

[0022] Referring now to the drawings, in which the various elements of the invention will be numbered, and the invention will be discussed to enable those skilled in the art to make and use the invention. It should be understood that the following description is only exemplary of the principles of the invention and should not be taken as narrowing the scope of the claims.

[0023] The prior art shown in Figure 2 teaches that in order to find multiple fingers, one can scan the sensor results in one dimension looking for a maximum, then a minimum, then another maximum to identify the first finger. The spacing between fingers, fingers, and a second finger is then identified, which corresponds to the first and second maxima shown. However, it has been determined that in some cases, processing data from a touch sensor as one-dimensional is inappropriate and does not accurately identify multiple fingers.

[0024] First, existing techniques cannot identify multiple fingers for a par...

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Abstract

A method for detecting and tracking multiple fingers in a 2D set of results using oversampled hill-climbing and hill-down with ranges.

Description

technical field [0001] The present invention generally relates to touch sensors. More specifically, the invention is a method for using data from a touch sensor to detect and track multiple objects using a two dimensional set of results from the touch sensor. Background technique [0002] There are many designs of capacitive sensitive touch sensors. An existing touchpad design that can be modified to work with the present invention is subject to Company-made touchpads. Therefore, it is helpful to examine the underlying technology to better understand how any capacitive sensitive touchpad can be modified for use with the present invention. [0003] Corporate touchpads are mutual capacitance sensing devices, an example of which is shown in the block diagram in Figure 1. In this touchpad 10, a grid of X (12) and Y (14) electrodes and a sensing electrode 16 are used to define a touch sensitive area 18 of the touchpad. Typically, the touchpad 10 is a rectangular grid of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
CPCG06F3/04166G06F2203/04104
Inventor 迈克尔·D·莱顿
Owner CIRQUE CORPORATION