Automotive audio bus (a2b) bridge circuit
AssigneeHarman Becker Automotive Systems GmbH
InventorsZhijun CHEN, Viktor DOBOS, Péter Atilla KARDOS
Life of this patent
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Abstract
A bridge circuit for data transfer. The bridge circuit includes a first physical input/output (I/O) port for an automotive audio bus (A2B) of a first version, and a first I/O interface coupled to the first physical I/O port for the A2B of the first version. The bridge circuit includes a second physical I/O port for an A2B of a second version, wherein the second version has a different physical layer and a different bandwidth to the first version. The bridge circuit includes a second I/O interface coupled to the second physical I/O port for the A2B of the second version, and the second I/O interface coupled to the first I/O interface via one or more data channels.
Claims20
A bridge circuit for data transfer, the bridge circuit comprising:
- a first physical input/output (I/O) port for an automotive audio bus (A2B) of a first version;
- a first I/O interface coupled to the first physical I/O port for the A2B of the first version;
- a second physical I/O port for an A2B of a second version, wherein the second version has a different physical layer and a different bandwidth to the first version;
- a second I/O interface coupled to the second physical I/O port for the A2B of the second version, and the second I/O interface coupled to the first I/O interface via one or more data channels;
- and
- wherein:
- the first I/O interface is operable to receive data from a first device connected to the first I/O port, and to transmit the data via the one or more data channels to the second I/O interface, and
- the second I/O interface is operable to send the data to a second device connected to the second I/O port.
An audio system comprising:
- a bridge circuit including:
- a first physical input/output (I/O) port for an automotive audio bus (A2B) of a first version,
- a first I/O interface coupled to the first physical I/O port for the A2B of the first version,
- a second physical I/O port for an A2B of a second version, wherein the second version has a different physical layer and a different bandwidth to the first version,
- a second I/O interface coupled to the second physical I/O port for the A2B of the second version, and the second I/O interface coupled to the first I/O interface via one or more data channels, and
- wherein:
- the first I/O interface is operable to receive data from a first device connected to the first I/O port, and to transmit the data via the one or more data channels to the second I/O interface, and
- the second I/O interface is operable to send the data to a second device connected to the second I/O port;
- and
- a master computer (e.g., ECU, IVI, AMP, etc.) coupled to the first physical I/O port, the master computer comprising:
- memory, and
- a processor.
A method of coupling an automotive audio bus (A2B) of a first version with an A2B of a second version, wherein the second version has a different physical layer and a different bandwidth to the first version, the method comprising:
- receiving, at a first input/output (I/O) interface of a bridge circuit, data from a first device, the first device connected to a first physical I/O port of the bridge circuit and the first physical I/O port is coupled to the first I/O interface, wherein the first I/O port and the first I/O interface are for an A2B of the first version;
- transmitting the data to a second I/O interface, the second I/O interface is for an A2B of the second version, wherein the data is transmitted via one or more data channels between the first I/O interface and the second I/O interface;
- and
- sending the data from the second I/O interface to a second device via a second physical I/O port, the second physical I/O port coupled to the second I/O interface and the second device, wherein the second physical I/O port is for an A2B of the second version.
Dependencies are inferred from the claim text.