Title:
指紋入力装置
Document Type and Number:
Japanese Patent JP4454335
Kind Code:
B2
Abstract:
A fingerprint input apparatus for providing a plurality of inputs while moving a finger to acquire a fingerprint image, the fingerprint input apparatus determining an intersection of the plurality of input partial fingerprint images to calculate a relative location between the plurality of partial fingerprint images on the basis of the intersection and outputting the calculated relative location with the plurality of partial fingerprint images to an external device. The intersection of the plurality of partial fingerprint images is obtained, for example, on the basis of a density distribution of dots constituting each of the image. The relative location is at least one of the moving direction, the moving distance, and the angle of rotation. Thereby, there is no movable part and thus it eliminates a need for providing the external device with software processing for calculating the relative location of the partial fingerprint images, thereby achieving downsizing and power saving of the apparatus.
Inventors:
Munehiro Ikeda
Application Number:
JP2004035067A
Publication Date:
April 21, 2010
Filing Date:
February 12, 2004
Export Citation:
Assignee:
NEC Infrontia Co., Ltd.
International Classes:
G06T1/00; G06K9/00
Domestic Patent References:
| JP2003248820A | ||||
| JP2003248828A | ||||
| JP10091769A |
Attorney, Agent or Firm:
Jyohei Yamashita
Michio Nagai
Michio Nagai