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US 8,474,696 B2Granted
Payment terminal ESD test
AssigneeVisa International Service Association
InventorsMustafa Top, Stanley Weitz
Life of this patent
Estimating the term…
Abstract
Systems and methods for performing test procedures for measuring and defining the sensitivity of payment terminals to ESD (electrostatic discharge) are disclosed. In some embodiments, a plurality of test equipment in a controlled environment are used to measure the peak discharge current (Ip) when a payment device is inserted into a payment terminal during several simulated conditions. Energy levels of the discharge currents are calculated using an energy calculation program. One or more reference current and energy levels are determined.
Claims32
A method comprising:
- measuring a capacitance of a payment device using a capacitance measure fixture and a capacitance meter;
- measuring a first current level after performing a first test procedure, using a measuring device, wherein the first test procedure comprises inserting the payment device into a payment terminal;
- measuring a second current level after performing a second test procedure, using the measuring device;
- and
- measuring a third current level after performing a third test procedure, using the measuring device, wherein the third test procedure comprises:
- charging the payment device to a first predetermined voltage, using a charging source;
- inserting the payment device into the payment terminal;
- observing the payment terminal for proper operation;
- and
- decrementing an output of the charging source by a first predetermined voltage increment, upon determining that the payment terminal does not operate properly;
- repeating the charging, inserting, observing, and decrementing steps until the payment terminal starts functioning properly, wherein a current level before a voltage level that results in proper function of the device is recorded.
8 more elements
A system comprising:
- a payment terminal configured to receive account data from a payment device and generate an authorization request message;
- an oscilloscope coupled to the payment terminal and configured to generate a data file when the payment device is in the payment terminal;
- a current transducer coupled to the payment terminal and configured to measure a current when the payment device is in the payment terminal;
- a charging source adapted to charge each of the payment device and an operator to a pre-specified voltage;
- and
- a computer system coupled to the oscilloscope and configured to receive data from the oscilloscope and calculate a first energy level, a second energy level and a third energy level using an energy calculation program stored on and executed by the computer system.
3 more elements
Dependencies are inferred from the claim text.