US 7,679,324 B2 · Non-common ground series bus physical layer implementation

Abstract

A communication circuit is used for transmitting data between a plurality of devices which have non-common ground voltages. The communication circuit comprises a plurality of transmitting input nodes coupled to the devices, respectively, a transmitting current path, a plurality of receiving output nodes coupled to the devices, respectively, and a receiving current path. The transmitting current path is coupled to the transmitting input nodes. The current through the transmitting current path is varied according to the input signal of the transmitting input nodes. The receiving current path is coupled to the receiving output nodes. The current through the receiving current path is varied according to the current of the transmitting current path such that data is transmitted from the transmitting input nodes to the receiving output nodes.

Claims19

Dependent claims

A communication circuit for transmitting data comprising:

a plurality of vertical devices which have a plurality of non-common ground voltages;
at least one lateral device, wherein said lateral device is at the lowest order ground voltage of said plurality of non-common ground voltages;
a plurality of vertical transmitting input nodes coupled to said plurality of vertical devices, respectively;
a lateral transmitting input node coupled to said lateral device;
and
a transmitting current path coupled to said plurality of vertical transmitting input nodes and said lateral transmitting input, wherein a current of said transmitting current path is varied according the input signals of said plurality of vertical transmitting input nodes and said lateral transmitting input node.

3 more elements

Dependencies are inferred from the claim text.

Non-common ground series bus physical layer implementation

Life of this patent

Non-common ground series bus physical layer implementation

Life of this patent

Abstract

Claims19