Sonos, Inc.

Azimuth Systems, Inc.

Jose Graziani

Jeffrey M Peters

Hrishikesh Gossain

Michael Agerbak

Nicholas A J Millington

Ted M Lin

Prashant Darisi

Jeremy Spilman

Nicholas AJ Millington

A computing device may broadcast a first message via a wireless interface while operating according to a first network topology. After broadcasting the first message, the computing device may receive the first message via a wired interface. Based on receiving the first message via the wired interface, the computing device may broadcast a second message indicating a second network topology via the wireless interface. Based on receiving the first message via the wired interface, the computing device may operate according to the second network topology.

Transition between network connections

Examples are disclosed and described to facilitate resolution of Internet Protocol address conflicts. An example method includes periodically broadcasting, by the playback device over the network, a probe message, detecting, by the playback device, a change in status associated with the connection, based on the detection, obtaining, by the playback device, a new Internet Protocol (IP) address; and based on the detection, including, by the playback device in at least one probe message broadcast subsequent to the detection, an indication for other playback devices on the network to obtain a new IP address.

Facilitating the resolution of address conflicts in a networked media playback system

Network topology based on a useful wired connection

Examples are disclosed and described to facilitate resolution of Internet Protocol address conflicts. An example method includes listening, by a first playback device having a first IP address, to a specified server port, receiving, by the first playback device from a second playback device via the specified server port, a message, wherein the message identifies a second IP address, wherein the second IP address has been assigned to the second playback device, determining, by the first playback device, whether the first IP address is the same as the second IP address, and when the first IP address is the same as the second IP address, obtaining, by the first playback device, a new IP address, wherein the new IP address is different from the first IP address and the second IP address.

Certain examples identify a device's useful wired connection and, when found, facilitate network configuration according to that useful wired connection. An example method includes periodically transmitting, by a first device, a first message over a wireless network interface. The example method includes listening, by the first device, for the first message over a wired network interface. The example method includes, when the first device at least receives the first message over the wired network interface, transmitting, by the first device to at least one additional device over the wireless network interface, a second message, wherein the second message includes an indication, the indication indicating that the at least one additional device can change its network configuration to utilize the wired network interface of the first device.

Identifying a useful wired connection

A method and apparatus is provided that enables accurate measurement of drop rate and delay in a System Under Test (SUT) by one or more monitoring devices even when the frame error rate of the monitoring devices may be imperfect. During a packet drop measurement process, ancillary information is identified and analyzed to determine if the ancillary information can be used to infer receipt of packets when explicit information regarding receipt is not present. A delay measurement process incorporates the time required to re-transmit packets into the delay measurement to more accurately reflect SUT operation.

Growing community of inventors

Shrewsbury, MA, United States of America

Jose Graziani