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1. (WO2017150806) IMAGE FORMING APPARATUS, TOUCH INPUT APPARATUS, AND METHOD OF PREVENTING TOUCH ERROR

Pub. No.:    WO/2017/150806    International Application No.:    PCT/KR2017/000757
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Jan 24 00:59:59 CET 2017
IPC: G06F 3/042
G06F 3/041
Applicants: HP PRINTING KOREA CO., LTD.
Inventors: KIM, Jin-sil
OH, Han-sang
Title: IMAGE FORMING APPARATUS, TOUCH INPUT APPARATUS, AND METHOD OF PREVENTING TOUCH ERROR
Abstract:
An image forming apparatus, a touch input apparatus, and a method of preventing touch error display apparatus are provided. The image forming apparatus includes an image former, a display, a light emitter configured to emit a plurality of light beams in a first direction perpendicular to a light emitting direction of the display and a second direction perpendicular to the first direction and the light emitting direction, a light receiver, a first processor configured to determine a touch input coordinate of a user based on a variation amount of each of the plurality of light beams received by the receiver, and a second processor configured to control the display and the image former using the determined touch input coordinate, wherein the first processor suspends determination of a touch input coordinate in response to optical change being detected only in one direction within a preset first time.