Pointing device and portable information terminal using the...

Details Pointing device and portable information terminal using the... Pointing device and portable information terminal using the...

2007-07-03

2007-07-03

Nguyen, Chanh (Department: 2675)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S157000

Reexamination Certificate

active

09930207

ABSTRACT:
A pointing device is placed in a through hole provided on an outer case of the portable information terminal. The portable information terminal includes a fingerplate attached to a through hole via a hinge4e; an image pick-up element placed on a circuit board; a condensing lens that forms an image on an outer surface of the fingerplate on an image pick-up plane of the image pick-up element; and a light emitting device that irradiates the outer surface of the fingerplate with illumination light, and takes the image of a pattern such as a fingerprint of a fingertip that touches the outer surface of the fingerplate by using the image pick-up element. When the fingertip moves while touching the fingerplate, the image taken by the image pick-up element changes and the pointer displayed on a display screen is moved in a direction according to a change direction and by a distance corresponding to a quantity of change.

REFERENCES:
patent: 6166370 (2000-12-01), Sayag
patent: 05073201 (1993-03-01), None
patent: 05265656 (1993-10-01), None
patent: 07057103 (1995-03-01), None
patent: 7219702 (1995-08-01), None
patent: 8179878 (1996-07-01), None
patent: 11194872 (1999-07-01), None
patent: 0016244 (2000-03-01), None

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