Invention Grant
- Patent Title: Pointing device comprising a light control part and electronic apparatus comprising an input device
- Patent Title (中): 指向装置包括光控制部件和包括输入装置的电子设备
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Application No.: US12868442Application Date: 2010-08-25
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Publication No.: US08743088B2Publication Date: 2014-06-03
- Inventor: Takahiro Watanabe
- Applicant: Takahiro Watanabe
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2009-262342 20091117
- Main IPC: G06F3/042
- IPC: G06F3/042 ; G06F3/041 ; G02B5/02 ; H01L33/00 ; G06M7/00 ; G06F3/0354

Abstract:
A pointing device including a touching surface, a light emitting diode, an imaging element, and a first light control part. A fingertip is placed on the touching surface. The light emitting diode illuminates the touching surface from a side opposite to a side where the fingertip is placed. The imaging element receives light reflected from the fingertip. The first light control part controls light, which is emitted from the light emitting diode and reaches the touching surface, so that the light is evenly incident to the touching surface. The pointing device improves detection accuracy and prevents malfunctions, even when there is deviation in an output from a light source. In addition, an electronic apparatus including an input device can be provided.
Public/Granted literature
- US20110115705A1 POINTING DEVICE AND ELECTRONIC APPARATUS Public/Granted day:2011-05-19
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