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1. WO2020069213 - IDENTIFICATION DE RÉSEAU DE DISPOSITIFS ÉLECTRONIQUES PORTABLES PENDANT UN CHANGEMENT DES ÉTATS DE PUISSANCE

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CLAIMS

1. A method for maintaining knowledge of a network identity of a network-connected playback device while changing power states, the method comprising:

determining that a playback device is entering a power state of sleep state;

sending state information from the playback device to a central data repository over a network responsive to the determination that the playback device is entering sleep state, where the state information comprises a MAC address of the playback device;

receiving the state information about the playback device at a waking device from the central data repository;

while in sleep state, waking the playback device at predetermined time intervals with messages addressed to the MAC address of the playback device; and

receiving a wake-up message at the playback device from the waking device and responding by changing from sleep state to active state.

2. The method of claim 1, further comprising:

maintaining a power state on a playback device, where the power state is at least one of: active, standby, and sleep;

broadcasting a MAC address associated with the playback device at a first predetermined time interval when the playback device is in the active power state;

broadcasting the MAC address associated with the playback device at a second predetermined time interval when the playback device is in the standby power state; and

ceasing broadcasting the MAC address when the playback device enters the sleep state.

3. The method of any preceding claim, further comprising:

reducing power to at least one electrical component of the playback device when the playback device transitions from the active power state to the standby power state; and

increasing power to the at least one electrical component of the playback device when the playback device transitions from the standby power state to the active power state.

4. The method of any preceding claim, wherein the central data repository is a cloud network.

5. The method of any preceding claim, further comprising sending a request for state information from the waking device to the cloud network, where the request for state information includes an identifier of the playback device.

6. The method of any preceding claim, where the playback device is not connected to an external power source.

7. The method of any preceding claim, where state information includes status of whether the playback device is in a state that cannot receive or respond to a magic frame.

8. The method of any preceding claim, where the wake-up message is unicast addressed to the playback device or where the wake-up message is broadcast on a network that the playback device is connected to.

9. The method of any preceding claim, where the controller device is another member of a group acting as group controller requesting MAC addresses of all devices in the group.

10. The method of any preceding claim, where the second predetermined time interval is longer than the first predetermined time interval.

11. The method of any preceding claim, wherein sending state information from the playback device to a cloud network when the playback device enters the sleep state comprises sending state information from the playback device to a cloud network when the playback device enters the sleep state from standby state.

12. The method of any preceding claim, further comprising

receiving input on a user interface on the waking device causing an instruction to cause the playback device to come out of sleep state;

responsive to the input on the user interface causing the instruction to cause the playback device to come out of sleep state, sending a wake up message from the waking device with a magic frame to each MAC address associated with each at least one playback device.

13. The method of claim 12, where the input on a user interface on the waking device causing an instruction to cause the playback device to come out of sleep state comprises detection of an input selecting the playback device.

14. The method of any of claim 12 or 13, where the input on a user interface on the waking device causing an instruction to cause the playback device to come out of sleep state comprises an instruction to a group controller, where the group controller is a controller for a group of playback devices to which the playback device belongs, to have the group of playback devices play a media content.

15. The method of any of claim 12 to 14, where requesting and receiving, by a waking device from a central data repository over a network, state information about the playback device is performed periodically at a predetermined time interval.

16. The method of any of claim 12 to 15, where requesting and receiving, by a waking device from a central data repository over a network, state information about the playback device is performed in response to an event on the waking device.