# US 10,311,866 B2 · Digital device and method for controlling same

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- Number: US 10,311,866 B2
- Document ID: US10311866B2
- Status: Granted
- Kind: B2
- Application number: 15/505,061
- Filed: 2014-11-10
- Published: 2017-09-14
- Granted: 2019-06-04
- Earliest claimed: 2014-08-21
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Ingyu Kang; Byounggi Lee; Sungmoon Cho
- Web page: https://patentgrep.com/patent/US10311866B2

## CPC

- G10L 15/20: Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech (G10L21/02 takes precedence)
- G10L 15/08: Speech classification or search
- G10L 15/22: Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L 15/30: Distributed recognition, e.g. in client-server systems, for mobile phones or network applications
- G10L 21/0208: Noise filtering
- H04L 12/12: Arrangements for remote connection or disconnection of substations or of equipment thereof
- H04L 12/2809: {indicating that an appliance service is present in a home automation network (monitoring functionality H04L43/0817; discovery or management thereof, e.g. service location protocol [SLP] or web services, H04L67/51)}
- H04L 12/2816: {Controlling appliance services of a home automation network by calling their functionalities (arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00)}
- H04L 61/00: Network arrangements, protocols or services for addressing or naming
- H04L 67/51: Discovery or management thereof, e.g. service location protocol [SLP] or web services
- H04L 67/52: specially adapted for the location of the user terminal
- G08C 2201/91: Remote control based on location and proximity
- G10L 2015/088: {Word spotting}
- G10L 2015/223: {Execution procedure of a spoken command}
- G10L 2021/02082: {the noise being echo, reverberation of the speech}
- H04L 2012/2841: {Wireless}
- H04L 2012/2849: {Audio/video appliances}
- H04L 2012/285: {Generic home appliances, e.g. refrigerators}
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G08C: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)

## Abstract

The present specification discloses various embodiments of a digital device and a method for controlling the same. A method for controlling a digital device according to an embodiment of the present invention may comprise the steps of: connecting to a repeater; sensing an external device located within a preconfigured distance and connected to the repeater; receiving an audio reference data transmission request from the sensed external device; and transmitting the requested audio reference data to the external device.

## Claims

### Claim 1

A method of controlling a digital device, the method performed by a controller of the digital device and comprising:
accessing a relay via a communication unit;
detecting an external device connected to the relay by being located within a preset distance from the relay;
receiving an audio reference data transmission request from the detected external devices via the communication unit,
wherein the external device supports a voice recognition function and transmits the audio reference data transmission request to the digital device outputting a real-time broadcast program in response to a preset voice recognition trigger command for controlling the external device, the preset voice recognition trigger command input by a user;
transmitting audio reference data stored in a storage unit to the external device in response to the audio reference data transmission request, wherein the audio reference data comprises audio data extracted from a broadcast signal of the real-time broadcast program and audio data contained in a music content; and
causing the external device to execute an acoustic echo canceler (AEC) function in response to the transmitted audio reference data by matching synch with an audio signal from a speaker of the digital device,
wherein when a plurality of digital devices are connected to the relay and when each of the plurality of digital devices includes a speaker, the relay simultaneously transmits audio reference data outputted through a respectively corresponding speaker of each of the plurality of digital devices to the external device, and
wherein the audio reference data further comprises audio data corresponding to a section from a current time of an audio signal currently outputted through the speaker of the digital device to a predetermined time elapsed from the current time.

### Claim 2 (depends on 1)

The method of claim 1, wherein the relay comprises a Wi-Fi (wireless-fidelity) router.

### Claim 3 (depends on 2)

The method of claim 2, wherein strength of a Wi-Fi signal generated by the Wi-Fi router is equal to or greater than a preset level when the external device is within the preset distance.

### Claim 4 (depends on 1)

The method of claim 1, wherein the external device comprises home appliances and wherein the home appliances comprise at least one selected from the group consisting of a robot cleaner, a refrigerator, and a washer.

### Claim 5

A digital device, comprising:
a communication unit performing data communication with a relay and an external device;
a storage unit storing audio reference data; and
a controller operably coupled to the communication unit and the storage unit and configured to:
access a relay via the communication unit;
detect an external device connected to the relay by being located within a preset distance from the relay;
receive an audio reference data transmission request from the detected external device,
wherein the external device supports a voice recognition function and transmits the audio reference data transmission request to the digital device outputting a real-time broadcast program in response to a preset voice recognition trigger command for controlling the external device, the preset voice recognition trigger command input by a user;
cause the communication unit to transmit audio reference data to the external device in response to receiving the audio reference data transmission request, wherein the audio reference data comprises audio data extracted from a broadcast signal of the real-time broadcast program and audio data contained in a music content; and
cause the external device to execute an acoustic echo canceler (AEC) function in response to the transmitted audio reference data by matching synch with an audio signal from a speaker of the digital device,
wherein when a plurality of digital devices are connected to the relay and each of the plurality of digital devices includes a speaker, the relay simultaneously transmits audio reference data outputted through a respectively corresponding speaker of each of the plurality of digital devices to the external device, and
wherein the audio reference data further comprises audio data corresponding to a section from a current time of an audio signal currently outputted through the speaker of the digital device to a predetermined time elapsed from the current time.

### Claim 6 (depends on 5)

The digital device of claim 5, wherein the relay comprises a Wi-Fi (wireless-fidelity) router.

### Claim 7 (depends on 6)

The digital device of claim 6, wherein strength of a Wi-Fi signal generated by the Wi-Fi router is equal to or greater than a preset level when the external device is within the preset distance.

### Claim 8 (depends on 5)

The digital device of claim 5, wherein the external device comprises home appliances and wherein the home appliances comprise at least one selected from the group consisting of a robot cleaner, a refrigerator, and a washer.