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Card reader with power efficient architecture that includes a power supply and a wake-up circuit

  • US 9,449,203 B2
  • Filed: 11/16/2015
  • Issued: 09/20/2016
  • Est. Priority Date: 02/05/2002
  • Status: Expired due to Term
First Claim
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1. A financial transaction device reader comprising:

  • a housing;

    a slot for receiving a financial transaction device;

    wake-up electronics configured to send a wake-up signal to a microcontroller to wake up device electronics of the financial transaction device reader from a sleep state to an active state in response to the financial transaction device being received in the slot, the device electronics configured to, in the active state, receive data from the financial transaction device and convert the data into a digital signal;

    wherein the microcontroller is configured to power down the wake-up electronics into a power conservation state when the device electronics transition to the active state and to power up the wake-up electronics when the device electronics return to the sleep state; and

    an output port configured to transmit the data to an input port of a mobile device coupled to the financial transaction device reader.

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