Title:
NON-CONTACT TYPE USER INPUT DEVICE
Document Type and Number:
Japanese Patent JP3800984
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To recognize the information of two or more points and the shape of an approaching object.
SOLUTION: A non-contact type user input device is provided with a plurality of linear transmission electrodes, a transmitter supplying an AC current for transmission to the respective transmission electrodes, a plurality of linear reception electrodes arranged so as not to be in contact with the respective transmission electrodes and a receiver receiving the AC current flowing through the reception electrodes. A capacitor is formed at each intersection of the transmission electrode and the reception electrode, a parallel capacitor is formed corresponding to the approach of the fingertip of a user and the capacitance of the capacitor changes corresponding to the approaching degree of the fingertip. Recognition is performed by utilizing the change of the AC current passing through the capacitor between the electrodes.
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Inventors:
Jun Rekimoto
Application Number:
JP2001151499A
Publication Date:
July 26, 2006
Filing Date:
May 21, 2001
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06F3/041; G06F3/044; (IPC1-7): G06F3/033
Domestic Patent References:
| JP8137607A | ||||
| JP2000047808A |
Foreign References:
| WO1999038149A1 |
Attorney, Agent or Firm:
Masaaki Miyata
Eiji Yamada
Toshio Sawada
Eiji Yamada
Toshio Sawada