Title:
COORDINATE INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/029952
Kind Code:
A1
Abstract:
Provided is a coordinate input device in which the input coordinates of a single point and multiple points can be specified. A plurality of drive electrodes (2) are arranged in the direction of the X axis, and a drive voltage is applied to the drive electrodes. A plurality of sense electrodes (3) are arranged in the direction of the Y axis, and the sense electrodes are endowed with an arbitrary angle so that electrostatic capacitances form. Adjacent sense electrodes (3) are simultaneously selected. The selected sense electrodes (3) are sequentially switched from one end to the other end in the direction of the Y axis. The difference is detected between the output signal of one sense electrode (3) and the output signal having reversed polarity of the other sense electrode (3). The input coordinate is calculated from the difference value obtained.
Inventors:
OYA JUNICHIRO (JP)
HIROBE KISEI (JP)
FUJIYOSHI TATSUMI (JP)
HATANO NAOYUKI (JP)
OI MOTOSHI (JP)
HIROBE KISEI (JP)
FUJIYOSHI TATSUMI (JP)
HATANO NAOYUKI (JP)
OI MOTOSHI (JP)
Application Number:
PCT/JP2009/065766
Publication Date:
March 18, 2010
Filing Date:
September 09, 2009
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD (JP)
OYA JUNICHIRO (JP)
HIROBE KISEI (JP)
FUJIYOSHI TATSUMI (JP)
HATANO NAOYUKI (JP)
OI MOTOSHI (JP)
OYA JUNICHIRO (JP)
HIROBE KISEI (JP)
FUJIYOSHI TATSUMI (JP)
HATANO NAOYUKI (JP)
OI MOTOSHI (JP)
International Classes:
G06F3/044; G06F3/041
Foreign References:
| JPH0895701A | 1996-04-12 | |||
| JPH1020992A | 1998-01-23 | |||
| JPS62134717A | 1987-06-17 | |||
| JPH04296922A | 1992-10-21 |
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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