Display control apparatus for controlling display responsive to touch input, display control method, and storage medium

Patent metadata

Field	Value
Publication number	US-8988397-B2
Application number	US-201113019016-A
Country	US
Kind code	B2
Filing date	Feb 1, 2011
Priority date	Feb 5, 2010
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

A display control apparatus which can prevent calibration caused by a user's erroneous operation in normal use, and correct for a coordinate deviation beyond the scope of assumption. Transformation of touch input is performed to obtain detected coordinates using a transformation coefficient. When the detected coordinates are obtained inside a first range defined in advance, the detected coordinates are obtained as calibration coordinates. When the detected coordinates are obtained outside the first range, the relationship between the previous detected coordinates and the present detected coordinates is obtained, and whether or not the relationship satisfies a specific condition determined in advance is determined. When the number of times the specific condition is satisfied reaches a predetermined number of times, a plurality of detected coordinates obtained outside the first range are obtained as calibration coordinates. A calibration process is performed to update the transformation coefficient based on the calibration coordinates.

First claim

What is claimed is:

1. A display control apparatus that performs calibration to correct for a coordinate deviation between detected coordinates, which are coordinates corresponding to touch input to target coordinates defined in advance, and the target coordinates, comprising:
a detected coordinate obtainment unit configured to perform transformation of the touch input to obtain the detected coordinates using a transformation coefficient for transforming the touch input into coord…

Assignees

• Naka Yasutaka
• Canon Kk

Inventors

• Naka Yasutaka

Classifications

• G06F3/0418 Primary

  Physics · mapped topic