Method and apparatus for fingerprint verification
CA 1291572 C · Owner: Mytec Technologies Inc. · Inventors: Tomko, George John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an optical processing fingerprint verification device. A light source illuminates a prism upon which the user has placed two fingers so that light reflected from the prism is modulated by the data of the users fingerprints. The fingerprint data beam passes through a lens and undergoes a Fourier transform at a card including a reflection hologram matched to two fingerprints of a reference individual. The intensity distribution of the light reflected from the hologram determines whether a match exists. Use of a reflection hologram allows use of an incoherent light source. The two fingers are located on the prism by movable guides positioned by information on the card …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.