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Portable credit card terminal interface

  • US 5,408,513 A
  • Filed: 09/24/1993
  • Issued: 04/18/1995
  • Est. Priority Date: 09/24/1993
  • Status: Expired due to Fees
First Claim
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1. A portable credit card terminal interface for verifying credit information, the portable credit card terminal interface removably connected to a credit card terminal and to a telephone station, the credit card terminal interface comprising:

  • a D/C power storage device;

    means for converting D/C power from the storage device into A/C power;

    means for transmitting A/C power from the means for converting to the credit card terminal;

    means for detecting financial information signals representing credit and transaction information;

    first circuit means for receiving from the credit card terminal said financial information signals;

    second circuit means for receiving from the telephone station verification signals representing verification information from a host computer; and

    control circuit for controlling the means for converting, the control circuit also controlling the first circuit means to route the financial information signals from the credit card terminal to the telephone station, the control circuit also controlling the second circuit means to route the verification signals from the telephone station to the credit card terminal,wherein, the credit card terminal interface is connected to an auxiliary power storage device; and

    wherein, the means for converting includes;

    means for determining that the portable credit card terminal interface is connected to the auxiliary power storage device; and

    means for receiving power from the auxiliary power storage device.

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