Pointing device and portable information terminal using the same
5 Assignments
0 Petitions
Accused Products
Abstract
A pointing device is placed in a through hole provided on an outer case of the portable information terminal. The terminal includes a fingerplate attached to a through hole via a hinge; 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 that touches the outer surface of the fingerplate by using the image pick-up element. When the fingertip moves, 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 the movement of the fingertip.
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Citations
4 Claims
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1. (canceled)
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2. A pointing device for moving pointer shown on a display screen of a display apparatus, comprising:
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a substrate disposed within a housing; and
an outer package for disposing said housing above said substrate, wherein said outer package includes an opening, a plate supported in a manner to allow a pushing operation via holding means, and an operation switch operated in accordance with the pushing operation of said plate, wherein said plate is exposed from said opening and includes a transparent outer surface portion for contacting a surface of an object, and wherein said substrate includes a light emitting means for irradiating illumination light toward an outer surface of said plate, an image detecting means for detecting reflecting light reflected at the surface of said object which is in contact with the outer surface of said plate, an optical means for focusing said reflecting light on a detecting surface of said image detecting means. - View Dependent Claims (3, 4)
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Specification