Patent ID: 11901756
Assignee: SNAP INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. A chargeable device, comprising:
a battery;
a battery charger circuit coupled to the battery;
a receiver including contact pads coupled to the battery charger circuit and to ground of the chargeable device;
at least one switch coupled to draw current from the battery charger circuit; and
a device controller, responsive to power from the contact pads of the receiver, configured to control the battery charger circuit to implement a charging current profile and to operate the at least one switch to pulse modulate current through the contact pads of the receiver with a high pulse amplitude that periodically meets or exceeds a charging state threshold when current flow defined by the charging current profile is at or above a cable connection state threshold but below the charging state threshold.