Fingerprint sensing method with finger position indication
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United States of America Patent
Stats
-
Oct 27, 1998
Grant Date -
N/A
app pub date -
Jan 26, 1996
filing date -
Jan 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fingerprint sensing device includes a fingerprint sensor, a processor for determining an actual fingerprint position on the fingerprint sensor relative to a desired fingerprint position, and a finger position indicator for generating a finger position indication to assist the user in positioning the finger to the desired fingerprint position based upon the actual fingerprint position on the fingerprint sensor. The processor preferably calculates a fingerprint center point defining the actual fingerprint position. The fingerprint sensor may be provided by an electric field sensor in integrated circuit form. The finger position indicator may be provided by a visual indicator, such as a desired position image indicia generator for generating image indicia on a display screen relating to the desired fingerprint position on the fingerprint sensor, and wherein an actual fingerprint position image is also generated relative to the desired position image indicia on the display screen. The desired position image indicia may preferably be a desired fingerprint center point indicia image. Method aspects of the invention are also disclosed.
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