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US 12,393,925 B2Granted
Communication system and display synchronization
AssigneeSumup Payments Ltd.
InventorStefano Bianconi
Life of this patent
Estimating the term…
Abstract
Various aspects of the disclosure generally relate to point-of-sale credit card processing devices. More specifically, the disclosure relates to synchronizing device communications with other device functions in order to reduce cross-platform interference and meet certification requirements.
Claims17
A point-of-sale credit card device comprising:
- a case;
- a display coupled to the case, the display having a plurality of pixels and configured to be refreshed during a plurality of refresh periods, each of the refresh periods including a write phase in which at least one of the plurality of pixels is addressed, and a dormant phase in which none of the plurality of pixels are addressed;
- a printed circuit board (PCB) coupled to the case;
- a display controller coupled to the PCB, the display controller configured to provide addressing for at least some of the plurality of pixels during the write phase;
- and
- a near-field-communication (NFC) system coupled to the PCB and configured to broadcast an NFC signal for near-field communication, the NFC system synchronized to the display refresh period and configured to begin broadcasting the NFC signal during the dormant phase based on the synchronization, continue broadcasting in an approximately continuous manner through the dormant phase, and continue broadcasting into at least the write phase of the following refresh period.
3 more elements
A method of reducing interference comprising:
- refreshing a display having a plurality of pixels by addressing at least one of the plurality of pixels during a write phase;
- entering a dormant phase in which none of the plurality of pixels is addressed;
- receiving a signal in a near field communication (NFC) system indicating that the dormant phase has been entered;
- beginning a broadcast of an NFC signal during the dormant phase;
- refreshing the display, after beginning a broadcast of an NFC signal, by addressing at least some of the plurality of pixels during the write phase;
- and
- ending the broadcast of the NFC signal after the beginning of the second display refresh.
4 more elements
A method of reducing interference in a credit card processing device comprising:
- refreshing a display having a plurality of pixels by addressing at least one of the plurality of pixels during a write phase;
- entering a dormant phase in which none of the plurality of pixels is addressed;
- synchronizing a start for broadcasting in a near field communication (NFC) system with the dormant phase;
- and
- broadcasting by the NFC system in the dormant phase and into another write phase.
2 more elements
Dependencies are inferred from the claim text.