Apparatus for recording and verifying handwriting, in particular

Details Apparatus for recording and verifying handwriting, in particular Apparatus for recording and verifying handwriting, in particular

1989-03-07

1991-05-07

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

050138740

ABSTRACT:
A signature verification tablet comprises two piezo-electric membranes each having a plurality of line electrodes on one side. The membranes are sandwiched together, with the line electrodes on one membrane at right angles to the line electrodes on the other. The line electrodes on each membrane are connected together in three interleaved sets, so that when a signature is written on the tablet, a series of pulses is produced containing direction and speed of movement information from which the authenticity of the signature can be verified.

REFERENCES:
patent: 3563097 (1971-02-01), Roggenstein et al.
patent: 3699253 (1972-10-01), Freedman
patent: 3808364 (1974-04-01), Veith
patent: 3991402 (1976-11-01), Radcliffe, Jr.
patent: 4110556 (1978-08-01), Hawkes
patent: 4234868 (1980-11-01), Radice
patent: 4397033 (1983-08-01), Bechet
patent: 4475235 (1984-10-01), Graham
patent: 4484026 (1984-11-01), Thornburg
patent: 4570149 (1986-02-01), Thornburg et al.
patent: 4617515 (1986-10-01), Taguchi et al.
patent: 4653107 (1987-03-01), Shojima et al.
patent: 4677259 (1987-06-01), Abe
patent: 4733023 (1988-03-01), Tamaru et al.
patent: 4748672 (1988-05-01), Nevill, Jr. et al.
patent: 4800240 (1989-01-01), Bechet
Abstract of Soviet Union Certificate of Inventorship 638,988 to Rybkin et al.
"Signature Verification Using Holistic Measures", by P. de Bruyne, published in Computers & Security, vol. 4, No. 4, Dec. 1985.
"High Resolution CRT Display Overlay for Probe Position Determination", IBM Technical Disclosure Bulletin, vol. 29, No. 10, Mar. 1987.

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