Transfer device for a differential bus system
AssigneeRobert Bosch GmbH
InventorsSebastian Stegemann, Steffen Walker
Life of this patent
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Abstract
A transfer device for a differential bus system. The transfer device includes a first bus connection and a second bus connection for connection to a transfer medium of the differential bus system, a transmitting device that is connected and/or connectable to the first bus connection and the second bus connection, and an impedance adaptation circuit that is designed to influence an impedance at the first bus connection and/or at the second bus connection.
Claims14
A transfer device for a differential bus system, comprising:
- a first bus connection and a second bus connection for connection to a transfer medium of the differential bus system;
- a transmitting device that is connected and/or connectable to the first bus connection and the second bus connection;
- and
- an impedance adaptation circuit that is configured to control an impedance at the first bus connection and/or an impedance at the second bus connection, wherein the control is based on a predefined or predefinable impedance difference value of a difference between the respective impedances at the first and second bus connections.
A method for operating a transfer device for a differential bus system, the transfer device including a first bus connection and a second bus connection for connection to a transfer medium of the differential bus system, and including a transmitting device that is connected and/or connectable to the first bus connection and the second bus connection, the transfer device including an impedance adaptation circuit, the method comprising the following:
- controlling an impedance at the first bus connection and/or an impedance at the second bus connection, wherein the control is based on a predefined or predefinable impedance difference value of a difference between the respective impedances at the first and second bus connections.
A transfer device for a differential bus system, comprising:
- a first bus connection and a second bus connection for connection to a transfer medium of the differential bus system;
- a transmitting device that is connected and/or connectable to the first bus connection and the second bus connection;
- and
- an impedance adaptation circuit that is configured to influence an impedance at the first bus connection and/or at the second bus connection;
- wherein the transfer device includes at least one of the following three features (I)-(III):
- (I) the influence of the impedance for which the impedance adaptation circuit is configured is an influence of the impedance at the first bus connection and/or the second bus connection that ensures that the impedance at the first bus connection does not deviate from the impedance at the second bus connection by more than a maximum predefinable difference value;
- (II) the impedance adaptation circuit includes a first active semiconductor element that is connected and/or connectable to the first bus connection and a second active semiconductor element that is connected and/or connectable to the second bus connection;
- and
- (III) the impedance adaptation circuit includes at least one circuit component that represents a simulation of at least one portion of the transmitting device.
Dependencies are inferred from the claim text.