US 12,316,402 B2
Bi-directional communication through capacitive coupling in wireless devices
Francesco Pugliese, Bologna (IT); and Marco Pifferi, Predosa (IT)
Assigned to Datalogic IP Tech S.R.L., Lippo di Calderara di Reno (IT)
Filed by Datalogic IP Tech S.r.l., Lippo di Calderara di Reno (IT)
Filed on Jan. 27, 2022, as Appl. No. 17/586,338.
Prior Publication US 2023/0239007 A1, Jul. 27, 2023
Int. Cl. H02J 7/00 (2006.01); G06K 7/14 (2006.01); H02J 7/02 (2016.01); H02J 50/10 (2016.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01); H04B 5/00 (2024.01); H04B 5/79 (2024.01); H04L 5/16 (2006.01); H04W 4/80 (2018.01); H04W 12/06 (2021.01)
CPC H04B 5/79 (2024.01) [G06K 7/1413 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02); H04L 5/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system of bi-directional communication through capacitive coupling in an inductive wireless charging device, comprising:
a wireless power transfer (WPT) system including a first transceiver with a transmitting capability and a second transceiver with a receiving capability for electrical power and data communication;
the WPT system including a first capacitive plate and a second capacitive plate positioned between the first transceiver and the second transceiver, wherein a distance exists between a first capacitive plate and a second capacitive plate of the pair of capacitive plates; and
the first transceiver configured to transmit an electrical signal to the first capacitive plate causing the first capacitive plate and the second capacitive plate to have a capacitive coupling, and wherein the electrical signal is received at the second transceiver from the second capacitive plate,
wherein a data transfer from the first transceiver through the first capacitive plate and from the second capacitive plate to the second transceiver occurs over a separate path from a transfer of the electrical power from the first transceiver to the second transceiver, and
wherein the first transceiver and the first capacitive plate are located in the inductive wireless charging device that holds a barcode reader, and the second transceiver and the second capacitive plate are located in the barcode reader.