Browse Prior Art Database

Signature Recognition System Transducer

IP.com Disclosure Number: IPCOM000085362D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bajorek, CH: AUTHOR [+2]

Abstract

Consumer transaction systems and credit card terminals require a simple method for verifying personal identity.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Signature Recognition System Transducer

Consumer transaction systems and credit card terminals require a simple method for verifying personal identity.

This magnetic transducer is located in a pen tip and operates with a special paper on which a person signs. The paper contains recorded magnetic transitions aligned from left to right. Thus, the component of pen motion perpendicular to the transitions causes the tip to cross the transitions, creating an output signal in the magnetic transducer.

A thin film magnetoresistive probe tip for reading magnetic stripes on price tags is incorporated into pens like the fine-point marking pens commonly available. The magnetic paper is simply sheets of recording tape with the magnetic transitions imprinted at the factory by an inductive recording head or by magnetic contact printing. Alternatively, it consists of a tablet with a permanent set of magnetic transitions and a roll of thin paper, which continuously feeds clean stock onto the working surface.

With computer terminals, the wand can use preamplification and analog-to- digital circuitry adapted for a price-tag reader. An internal clock and counter measure the time between pulses, which is a direct measure of pen velocity.

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