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Establishing communication between digital media servers and audio playback devices in audio systems

  • US 10,419,497 B2
  • Filed: 03/31/2015
  • Issued: 09/17/2019
  • Est. Priority Date: 03/31/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving via an audio playback device a first multicast transmission from a computer hosting a digital media server, the first multicast transmission indicating the presence of the digital media server on a network;

    transmitting via the audio playback device a first request for unicast connection to the digital media server; and

    in response to the first request for unicast connection being blocked via a firewall running on the computer hosting the digital media server, transmitting via the audio playback device a second multicast transmission,wherein the firewall running on the computer hosting the digital media server permits discovery requests and other multicast announcements and blocks requests to establish a unicast connection,wherein the second multicast transmission comprises information that allows the digital media server to establish a connection with the audio playback device to facilitate transmission of a unicast request for content from the audio playback device to the digital media server;

    in response to receiving the second multicast transmission at the digital media server, transmitting via the digital media server a second request for a unicast connection using the information provided in the second multicast transmission;

    receiving via the audio playback device the second request; and

    in response, establishing a unicast connection with the digital media server at the audio playback device.

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