Ic card reader/writer having a short-circuit detection capability
CA 1319987 C · Owner: Hirata, Hiroharu · Inventors: Hirata, Hiroharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An IC card reader/writer has a short-circuit detector for determining, when an IC card is inserted in the reader/writer whether or not any of connecting terminals for feeding a current to the IC card is short-circuited, and producing a resultant signal representative of the result of determination. A control is responsive to the resultant signal for performing when the resultant, signal does not indicate short-circuit control such that the current, is fed to the IC card via the connecting terminals. A reference voltage generator generates a reference voltage while the short-, circuit detector determines whether any of the connecting terminals is short-circuited or not by using the generated …
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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 July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
- 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.