- Patent Title: Electronic device with a backlight and capacitive touch panel and method for controlling electronic device so as to suppress error detection of a touch operation
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Application No.: US14993635Application Date: 2016-01-12
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Publication No.: US10345937B2Publication Date: 2019-07-09
- Inventor: Atsushi Ichihara
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2015-005077 20150114
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/041 ; G06F3/044 ; G09G3/34 ; G09G3/36

Abstract:
Provided an electronic device capable of suppressing the effects of noise caused by driving of a backlight, and preventing an erroneous detection of an operation on a touch panel. The electronic device includes a display, a touch panel, which is arranged on a display surface side of the display and is capable of detecting a touch operation, a backlight of the display, a backlight control unit configured to drive and control a current of the backlight based on pulse width modulation, and a CPU. The CPU is configured to cause the backlight control unit to drive and control the backlight at a current drive frequency different from a sub-scanning frequency of the touch panel.
Public/Granted literature
- US20160202821A1 ELECTRONIC DEVICE AND METHOD FOR CONTROLLING ELECTRONIC DEVICE Public/Granted day:2016-07-14
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