Patent ID: 11877244
Assignee: MICROCHIP TECHNOLOGY INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 16:
17. A communication system comprising:
a host device; and
a communication device, the communication device for connection with the host device and with a power source, the communication device comprising:
a device controller circuit for data communication with the host device;
one or more downstream ports for connecting one or more respective devices, different from the host device; and
a converter circuit to provide a virtual device ground at least to the device controller circuit and to the one or more downstream ports to compensate a ground potential difference between the host device, the device controller circuit, and the one or more downstream ports of the communication device; wherein
the converter circuit comprises a compensator with a memory; wherein

the compensator to retrieve from the memory pre-determined impedance data of a signal ground between the host device and the communication device and to control the virtual device ground based on the pre-determined impedance data so that the ground potential difference is reduced.