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

Claim 17:
18. A method of communication in a communication system with a host device and a communication device, the method comprising:
providing a virtual ground to a device controller circuit of the communication device and to one or more downstream ports, which downstream ports are for connecting one or more respective devices, different from the host device;
retrieving from a memory pre-determined impedance data of a signal ground between the host device and the communication device;
controlling the virtual ground based on the pre-determined impedance data so that a ground potential difference between the host device, the device controller circuit, and the one or more downstream ports of the communication device is reduced; and
communicating between the host device and the communication device.