Device and method for use in the verification of handwriting

Details Device and method for use in the verification of handwriting Device and method for use in the verification of handwriting

2008-07-15

2008-07-15

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000, C382S187000

Reexamination Certificate

active

07400286

ABSTRACT:
A device (10) for use in the verification of handwriting, comprising: a body (12) having a surface (11) over which a writing instrument (8) is moved during the generation of a piece of handwriting; a transducer (14) for transducing stress-wave activity in the body (12) to an analogue time varying signal (15); and digitizing means (22) for converting the analogue time varying signal (15) into a digital signal (27, 31, 11), the digitizing means (22) comprising a sampler (22) arranged to under-sample the analogue time varying signal (15).

REFERENCES:
patent: 4122435 (1978-10-01), Greenaway
patent: 6556635 (2003-04-01), Dehghan
patent: 6741650 (2004-05-01), Painchaud et al.
patent: 3 541 031 (1986-05-01), None
patent: 10241328 (2004-03-01), None
patent: 2 159 998 (1985-12-01), None
patent: 93/00659 (1993-01-01), None
Leslie Green; The Alias Theorems: Practical Undersampling For Expert Engineers; Reed Electronics; Jun. 21, 2001.

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