Bus interface and method for coupling a bus device to a bus
AssigneeRobert Bosch GmbH
InventorsHans-Friedrich Kiefer, Mathias Fiedler, Jochen Huebl
Life of this patent
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Abstract
A bus interface is described, in particular in motor vehicles, for connecting a bus device to a bus using a pair of complementary bus lines, including a first driver circuit whose input is connected to the bus device and whose output is connected to the first bus line of the pair of complementary bus lines, and a second driver circuit, which is complementary to the first driver circuit and whose output is connected to the second bus line of the pair of complementary bus lines, the input of the second driver circuit being connected to the output of the first driver circuit.
Claims9
A bus interface for connecting a bus device to a bus using a pair of complementary bus lines, the bus interface comprising:
- a first driver circuit that includes an input connected to the bus device, and an output connected to a first bus line of the pair of complementary bus lines;
- and
- a second driver circuit that is complementary to the first driver circuit and that includes an output connected to a second bus line of the pair of complementary bus lines, wherein an input of the second driver circuit is connected to the output of the first driver circuit via a center tapping point of a voltage divider, which is connected between the output of the first driver circuit and the output of the second driver circuit, the second driver circuit including a regulator to regulate a potential at the center tapping point of the voltage divider at a predetermined level, wherein the second driver circuit is inverse-operated relative to the first driver circuit with respect to a common voltage.
A method for connecting a bus device to a bus using a pair of complementary bus lines, the method comprising:
- connecting the bus device to an input of a first driver circuit;
- connecting an output of the first driver circuit to a first bus line of the pair of complementary bus lines;
- connecting an output of a second driver circuit, which is complementary to the first driver circuit, to a second bus line of the pair of complementary bus lines;
- connecting an input of the second driver circuit to the output of the first driver circuit via a center tapping point of a voltage divider, which is connected between the output of the first driver circuit and the output of the second driver circuit, the second driver circuit including a regulator to regulate a potential at the center tapping point of the voltage divider at a predetermined level;
- and
- controlling the first driver circuit by an input signal, wherein the second driver circuit is inverse-operated relative to the first driver circuit with respect to a common voltage.
Dependencies are inferred from the claim text.