Method of transmitting information from a power efficient card to a mobile device
First Claim
Patent Images
1. A method of transmitting information to a mobile device, comprising:
- powering wake-up electronics of a card reader by a microphone bias voltage signal of the mobile device, wherein the wake-up electronics are configured to transition a microcontroller into an active mode upon detection of a card swipe signal;
reading a payment card using the card reader, the card reader comprising a read head configured for reading a magnetic stripe of the payment card;
receiving a raw magnetic head signal at an analog to digital front-end of the card reader, the analog to digital front end coupled to the microcontroller and a power subsystem of the card reader configured to convert the microphone bias voltage signal into a system voltage signal that enables the analog to digital front-end to operate;
converting, by the analog to digital front-end, the raw magnetic head signal into a processed digital signal that the microcontroller can interpret; and
sending an output signal to the mobile device, the output signal based at least in part on contents of the raw magnetic head signal.
4 Assignments
0 Petitions
Accused Products
Abstract
A method of transmitting information to a mobile device includes providing a read head with a slot for swiping a magnetic stripe of a card, a power supply coupled to wake-up electronics and a microcontroller. The wake-up electronics are powered by a microphone bias of a mobile device.
-
Citations
30 Claims
-
1. A method of transmitting information to a mobile device, comprising:
-
powering wake-up electronics of a card reader by a microphone bias voltage signal of the mobile device, wherein the wake-up electronics are configured to transition a microcontroller into an active mode upon detection of a card swipe signal; reading a payment card using the card reader, the card reader comprising a read head configured for reading a magnetic stripe of the payment card; receiving a raw magnetic head signal at an analog to digital front-end of the card reader, the analog to digital front end coupled to the microcontroller and a power subsystem of the card reader configured to convert the microphone bias voltage signal into a system voltage signal that enables the analog to digital front-end to operate; converting, by the analog to digital front-end, the raw magnetic head signal into a processed digital signal that the microcontroller can interpret; and sending an output signal to the mobile device, the output signal based at least in part on contents of the raw magnetic head signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A card reader apparatus, comprising:
-
a housing having a slot, the slot configured to accept a magnetic stripe card; a read head, located in the slot of the housing, the read head configured for reading a magnetic stripe card; a microcontroller, coupled to the read head; a power subsystem, coupled to the microcontroller, the power subsystem configured to convert a microphone bias voltage signal into a system voltage signal that enables the microcontroller to operate; wake up electronics, coupled to the microcontroller; and a jack configured for interfacing with a microphone input having the microphone bias voltage signal, the jack further configured for accepting power from the microphone bias voltage signal, the jack being coupled to the wake up electronics, the power subsystem, and the microcontroller. - View Dependent Claims (30)
-
Specification