IC memory card with non-contact power and data connection
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United States of America Patent
Stats
-
May 2, 1995
Issued Date -
N/A
app pub date -
May 21, 1993
filing date -
Apr 20, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A non-contact electrical transformer coupling is disclosed that provides electrical power and full duplex digital communications between a host computer and a removable IC memory card. A unique two-part host magnetic core assembly having a quadrafid design forming multiple poles is provided with printed circuit windings and is disposed to receive the IC memory card embedded with core pole pieces and associated printed circuit card windings to complete the magnetic flux paths and transformer coupling. The configuration of the poles and windings form completely independent channels, each of which behaves like a wide-band ferrite core transformer. The independence of each channel enables this unique magnetic core and associated windings to couple relatively large amounts of power to the circuitry of the IC memory card and establish a high-speed bidirectional data link between the host and card.
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