US Patent No. 10,397,966

APPARATUS AND METHOD FOR ESTABLISHING A BI-DIRECTIONAL COMMUNICATION LINK BETWEEN A SYMBOL READER AND A SYMBOL READER CRADLE USING WIRELESS CHARGING COMPONENTS


Patent No. 10,397,966
Issue Date August 27, 2019
Title Apparatus And Method For Establishing A Bi-directional Communication Link Between A Symbol Reader And A Symbol Reader Cradle Using Wireless Charging Components
Inventorship Robert W. DiGiovanna, Shirley, NY (US)
Assignee Zebra Technologies Corporation, Lincolnshire, IL (US)

Claim of US Patent No. 10,397,966

1. A system comprising:a symbol reader cradle having:
a cradle housing;
a first short-range communication transceiver positioned within the cradle housing, the first short-range communication transceiver operable to maintain electronic communication via a short-range wireless communication protocol;
a first induction coil configured to generate an oscillating electromagnetic field in response to an alternating current applied across the first induction coil; and
a first controller configured to modulate the alternating current applied across the first induction coil to transmit, via the oscillating electromagnetic field, a first communication parameter related to the first short-range communication transceiver, the first communication parameter including identification data uniquely identifying the first short-range communication transceiver; and
a symbol reader having:
a symbol reader housing;
an imaging assembly positioned at least partially within the symbol reader housing, the imaging assembly having a field of view (FOV), the imaging assembly being configured to capture image data related to a symbol code;
a rechargeable power source configured to be electrically charged and to supply an electric charge to power the imaging assembly;
a second short-range communication transceiver positioned within the symbol reader housing, the second short-range communication transceiver operable to maintain electronic communication via the short-range wireless communication protocol;
a second induction coil configured to carry an induced current in response to being exposed to the oscillating electromagnetic field, the second induction coil being coupled to the rechargeable power source, the induced current carried through the second induction coil being used to electrically charge the rechargeable power source; and
a second controller communicatively coupled to the second short-range communication transceiver and to the second induction coil,
wherein, responsive to the symbol reader being positioned within the symbol reader cradle:
the rechargeable power source of the symbol reader is electrically charged by the induced current carried through the second induction coil;
the second controller receives the first communication parameter by detecting a modulation in the induced current carried through the second induction coil;
responsive to receiving the first communication parameter, the second controller instructs the second short-range communication transceiver to transmit, via the short-range wireless communication protocol, a radio frequency (RF) signal, the RF signal including (i) the identification data uniquely identifying the first short-range communication transceiver and (ii) a request to establish a bi-directional communication link with the first short-range communication transceiver;
the first short-range communication transceiver actively listens for the RF signal including (i) the identification data uniquely identifying the first short-range communication transceiver and (ii) the request to establish the bi-directional communication link with the first short-range communication transceiver; and
responsive to the first short-range communication transceiver receiving the RF signal, the first short-range communication transceiver and the second short-range communication transceiver establish the bi-directional communication link, the bi-directional communication link occurring via the short-range wireless communication protocol.