US 2026/0238920 A1Published application

Device, System, and Method for Audio Transmission

AssigneeBang & Olufsen A/S

InventorRené HAUNSTRUP

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Abstract

Disclosed is an audio device that includes a Universal Serial Bus Type-C (USB-C) connector comprising at least one pair of signal transmitting pins and at least one pair of signal receiving pins, and an audio transmit-receive device for audio bus communication. The audio transmit-receive device is in a master mode or in a slave mode. Further disclosed are a system comprising a plurality of audio devices and a method of transmitting and receiving audio between a plurality of such audio devices.

Claims15

Dependent claims

An audio device comprising:

a Universal Serial Bus Type-C (USB-C) connector comprising at least one pair of signal transmitting pins and at least one pair of signal receiving pins,
an audio transmit-receive device for audio bus communication, the audio transmit-receive device being in a master mode or in a slave mode, wherein the audio transmit-receive device, if in the master mode, is configured to:
receive an audio signal for playback;
transmit, via a pair of master pins of the audio transmit-receive device, a bus initiation signal to initiate an audio bus for transmitting and receiving digital signals comprising audio data and, optionally, control data via the pair of master pins;
transmit and receive, via the audio bus and the pair of master pins, digital signals comprising audio data and, optionally, control data;
and
periodically transmit with a predetermined period, via the pair of master pins, a downstream synchronisation control frame, and periodically receive with the predetermined period, via the pair of master pins, an upstream synchronisation response frame,
and wherein the audio transmit-receive device, if in the slave mode, is configured to:
receive, via a pair of slave pins of the audio transmit-receive device, a bus initiation signal to initiate an audio bus for transmitting and receiving digital signals comprising audio data, and, optionally, control data via the pair of slave pins;
transmit and receive, via the audio bus and the pair of slave pins, digital signals comprising audio data and, optionally, control data;
and
periodically receive with a predetermined period, via the pair of slave pins, a downstream synchronisation control frame, and periodically transmit with the predetermined period, via the pair of slave pins, an upstream synchronisation response frame,
the audio device further comprising a control device operably connected to the USB-C connector and the audio transmit-receive device,
wherein the control device is configured to, in response to determining that the audio transmit-receive device is in the master mode, connect a pair of the at least one pair of signal transmitting pins of the USB-C connector to the pair of master pins of the audio transmit-receive device, and/or in response to determining that the audio transmit-receive device is in the slave mode, connect a pair of the at least one pair of signal receiving pins of the USB-C connector to the pair of slave pins of the audio transmit-receive device, respectively.

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Dependencies are inferred from the claim text.

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Abstract

An audio device comprising:

a Universal Serial Bus Type-C (USB-C) connector comprising at least one pair of signal transmitting pins and at least one pair of signal receiving pins,
an audio transmit-receive device for audio bus communication, the audio transmit-receive device being in a master mode or in a slave mode, wherein the audio transmit-receive device, if in the master mode, is configured to:
receive an audio signal for playback;
transmit, via a pair of master pins of the audio transmit-receive device, a bus initiation signal to initiate an audio bus for transmitting and receiving digital signals comprising audio data and, optionally, control data via the pair of master pins;
transmit and receive, via the audio bus and the pair of master pins, digital signals comprising audio data and, optionally, control data;
and
periodically transmit with a predetermined period, via the pair of master pins, a downstream synchronisation control frame, and periodically receive with the predetermined period, via the pair of master pins, an upstream synchronisation response frame,
and wherein the audio transmit-receive device, if in the slave mode, is configured to:
receive, via a pair of slave pins of the audio transmit-receive device, a bus initiation signal to initiate an audio bus for transmitting and receiving digital signals comprising audio data, and, optionally, control data via the pair of slave pins;
transmit and receive, via the audio bus and the pair of slave pins, digital signals comprising audio data and, optionally, control data;
and
periodically receive with a predetermined period, via the pair of slave pins, a downstream synchronisation control frame, and periodically transmit with the predetermined period, via the pair of slave pins, an upstream synchronisation response frame,
the audio device further comprising a control device operably connected to the USB-C connector and the audio transmit-receive device,
wherein the control device is configured to, in response to determining that the audio transmit-receive device is in the master mode, connect a pair of the at least one pair of signal transmitting pins of the USB-C connector to the pair of master pins of the audio transmit-receive device, and/or in response to determining that the audio transmit-receive device is in the slave mode, connect a pair of the at least one pair of signal receiving pins of the USB-C connector to the pair of slave pins of the audio transmit-receive device, respectively.

11 more elements