Title:
POSITION INPUT DEVICE, ELECTRONIC APPARATUS, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/002018
Kind Code:
A1
Abstract:
According to one embodiment of the present invention, a position input device is provided with: an operation board having characteristics of scattering light inputted from a first surface; an image pickup element (CCD camera) that picks up, from the second surface side of the operation board, an image of a shadow of an indicator disposed on the first surface side of the operation board; and an image processing unit that detects positional information of the shadow on the operation board on the basis of the image captured by means of the image pickup element.
Inventors:
SHIBATA SATOSHI
YAMANAKA SHUNPEI
URAYAMA MASAO
YAMANAKA SHUNPEI
URAYAMA MASAO
Application Number:
PCT/JP2014/066643
Publication Date:
January 08, 2015
Filing Date:
June 24, 2014
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
G06F3/042; G06F3/0354
Foreign References:
| JPH07182101A | 1995-07-21 | |||
| JP2003076491A | 2003-03-14 | |||
| JP2006228196A | 2006-08-31 | |||
| JP2007241737A | 2007-09-20 | |||
| JP2013084269A | 2013-05-09 |
Attorney, Agent or Firm:
FUNAYAMA Takeshi et al. (JP)
Takeshi Funayama (JP)
Takeshi Funayama (JP)
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