Systems and methods for discovering wireless display devices using inaudible audio signals

Patent metadata

Field	Value
Publication number	US-9513861-B2
Application number	US-201314128001-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Sep 24, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The present disclosure relates to computer-implemented systems and methods for wireless display discovery. The method may include receiving, by a computer, a selection to detect wireless display devices. The computer may include one or more processors, a radio transceiver, and a microphone. The method may also include identifying, by the radio transceiver, a plurality of wireless display device and transmitting, by the radio transceiver, respective connection requests to the plurality of wireless display devices. Additionally, the method may include transmitting, by the radio transceiver to the wireless display devices, respective requests for inaudible audio signal transmission. The method may also include receiving, by the microphone, a plurality of inaudible audio signals from the wireless display devices. Further still, the method may include determining, based at least in part on the plurality of inaudible audio signals, whether any of the plurality of wireless display devices are in the same room as the computer.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a computer, a selection to detect wireless display devices, the computer comprising one or more processors, a radio transceiver, and a microphone;
identifying, by the radio transceiver, a plurality of wireless display devices;
transmitting, by the radio transceiver, respective connection requests to the plurality of wireless display devices;
transmitting, by the radio transceiver to the wireless display devices, respective requests for inaudible audio signal transmission;
receiving, by the microphone, a plurality of inaudible audio signals from the wireless display devices; and
determining, based at least in part on the plurality of inaudible audio signals, that at least one of the plurality of wireless display devices is in a same room as the computer, the determining comprising:
receiving, from the wireless display devices, a wireless address identifier associated with an inaudible audio signal identifier,
determining respective signal-to-noise information associated with each of the plurality of inaudible audio signals,
determining, based at least in part on the respective signal-to-noise information, that a respective inaudible audio signal, of the plurality of inaudible audio signals, was transmitted from inside the room, the respective inaudible audio signal associated with the at least one of the plurality of wireless display devices, and
determining that the respective inaudible audio signal comprises an identifier that matches the inaudible audio signal identifier associated with a respective wireless display of the wireless display devices.

2. The method of claim 1 , further comprising:
establishing a streaming wireless display connection between the computer and the respective wireless display device.

3. The method of claim 1 , further comprising:
determining, based at least in part on the inaudible audio signal identifier, the wireless address identifier associated with the respective wireless display device; and
establishing the streaming wireless display connection with the wireless display device based at least in part on the wireless address identifier.

4. The method of claim 1 , wherein the radio transceiver is a Bluetooth Low-Energy transceiver.

5. A device, comprising:
a radio transceiver;
a microphone;
at least one processor; and
at least one memory storing computer-executable instructions, that when executed by the at least one processor, cause the at least one processor to:
identify, by the radio transceiver, a first wireless display and a second wireless display from a plurality of wireless display devices;
request the first wireless display and the second wireless display to emit respective inaudible audio signals;
receive, by the microphone, the respective inaudible audio signals from the first wireless display and the second wireless display; and
determine, based at least in part on the respective inaudible audio signals, that the first wireless display is in a same room as the device, wherein the computer-executable instructions that cause the at least one processor to determine further comprise additional computer-executable instructions that cause the at least one processor to:
receive, from the first wireless display or the second wireless display, a wireless address identifier associated with an inaudible audio signal identifier,
determine respective signal-to-noise information associated with each of the respective inaudible audio signals,
determine, based at least in part on the respective signal-to-noise information, that at least one of the respective inaudible audio signals was transmitted from inside the room, wherein the at least one of the respective inaudible audio signals is associated with the at least one of the plurality of wireless display devices, and
determine that the at least one of the respective inaudible audio signals comprises an identifier that matches the inaudible audio signal identifier associated with the first wireless display or the second wireless display.

6. The device of claim 5 , wherein the computer-executable instructions to identify the first wireless display and the second wireless display further comprise computer-executable instructions that cause the at least one processor to:
receive respective received signal strength indications (RSSIs) from the plurality of wireless display devices; and
determine that the RSSI associated with the first wireless display and the RSSI associated with the second wireless display are above a predetermined threshold.

7. The device of claim 5 , wherein the computer-executable instructions further cause the at least one processor to:
determine, for the respective inaudible audio signals, respective signal-to-noise information.

8. The device of claim 7 , wherein the computer-executable instructions to determine that the first wireless display is in the same room further comprise instructions that cause the at least one processor to:
determine that a first signal-to-noise information, of the respective signal-to-noise information, is above a predetermined threshold;
determine that the first signal-to-noise information is associated with a first inaudible audio signal received by the microphone; and
determine that the first inaudible audio signal is emitted by the first wireless display.

9. The device of claim 8 , wherein the computer-executable instructions to determine that the first inaudible audio signal is emitted by the first wireless display further comprise instructions that cause the at least one processor to:
receive, from the first wireless display, a first wireless address identifier associated with a first inaudible audio signal identifier;
determine audio signature information associated with the first inaudible audio signal; and
determine that the first inaudible audio signal identifier matches the audio signature information.

10. The device of claim 9 , wherein the computer-executable instructions further cause the at least one processor to:
determine, based at least in part on the association between the first wireless address identifier and the first inaudible audio signal identifier, that the first wireless address identifier corresponds to the first wireless display; and
establish, based at least in part on the first wireless address identifier, a streaming wireless display connection with the first wireless display.

11. The device of claim 10 , wherein the wireless address identifier is a Wi-Fi Media Access Control address.

12. The device of claim 5 , wherein the radio transceiver is a Bluetooth Low-Energy transceiver.

13. A non-transitory computer-readable medium comprising instructions, that when executed by at least one processor, cause the at least one processor to:
identify a first wireless display and a second wireless display from a plurality of wireless display devices;
request the first wireless display and the second wireless display to emit respective inaudible audio signals;
receive the respective inaudible audio signals from the first wireless display and the second wireless display; and
determine, based at least in part on the respective inaudible audio signals, that the first wireless display is in a same room as the device, wherein the instructions that cause the at least one processor to determine further comprise additional instructions that cause the at least one processor to:
receive, from the first wireless display or the second wireless display, a wireless address identifier associated with an inaudible audio signal identifier,
determine respective signal-to-noise information associated with each of t

Assignees

• Lin Xintian E
• Gao Jie
• Li Qinghua
• Bhasker Narjala
• Intel Corp

Inventors

• Lin Xintian E
• Gao Jie
• Li Qinghua
• Bhasker Narjala

Classifications

• H04W4/16 Primary

  Communication-related supplementary services, e.g. call-transfer or call-hold · CPC title

• H04M3/567

  Multimedia conference systems · CPC title

• G09G2370/16

  Use of wireless transmission of display information · CPC title

• H04W12/06

  Authentication · CPC title

• H04W76/14

  Direct-mode setup · CPC title