# US 2021/0241767 A1 · Inaudible frequency transmission in interactive content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241767 A1 - Document ID: US20210241767A1 - Status: Published application - Kind: A1 - Application number: 17/234,916 - Filed: 2021-04-20 - Published: 2021-08-05 - Earliest claimed: 2019-03-08 - Assignees: Rovi Guides, Inc. - Applicants: Rovi Guides, Inc. - Inventors: David D. Shoop; Dylan M. Wondra - Web page: https://patentgrep.com/patent/US20210241767A1 ## CPC - G06F 3/167: {Audio in a user interface, e.g. using voice commands for navigating, audio feedback} - G10L 15/22: Procedures used during a speech recognition process, e.g. man-machine dialogue - G10L 25/51: for comparison or discrimination - G10L 25/84: for discriminating voice from noise - H04B 11/00: Transmission systems employing ultrasonic, sonic or infrasonic waves - H04N 21/43615: {Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals (home Audio Video Interoperability [HAVI] data switching networks H04L12/2805)} - H05B 47/155: Coordinated control of two or more light sources - G10L 2015/228: {of application context} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING - H04B: TRANSMISSION - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract Systems and methods may be used to detect an inaudible signal associated with a first audible signal of an audio input. The inaudible signal may include a frequency signature. The frequency signature may be associated with an electronic device type. The systems and methods may activate a response monitor. The response monitor may be activated for a predetermined time. The response monitor may be activated responsive to the frequency signature. The systems and methods may determine a content characteristic of the first audible signal based on the inaudible signal. The systems and methods may include generating a message. The message may be based on the content characteristic. The systems and methods may include transmitting the message. The message may be transmitted on a condition that a second audible signal corresponds to the message and is received within the predetermined time. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 A method comprising: detecting an inaudible signal associated with an audible signal, the inaudible signal including a signature associated with an electronic device; activating a monitor to detect a user gesture, wherein the monitor is activated for a predetermined time responsive to the signature; determining a characteristic of the audible signal based on the inaudible signal; and transmitting a message based on the characteristic on a condition that the user gesture corresponds to the message and is received within the predetermined time. ### Claim 22 (depends on 21) The method of claim 21, wherein the inaudible signal includes an inaudible wake command. ### Claim 23 (depends on 21) The method of claim 21, wherein the electronic device is a voice-activated electronic device. ### Claim 24 (depends on 21) The method of claim 21, wherein the monitor is a voice response monitor. ### Claim 25 (depends on 21) The method of claim 21, wherein activating the monitor comprises: activating the monitor responsive to a wake command and the signature; or activating the monitor without the wake command and responsive to the signature. ### Claim 26 (depends on 21) The method of claim 21, wherein activating the monitor comprises: activating a camera. ### Claim 27 (depends on 21) The method of claim 21, wherein the user gesture is a sign gait that is a virtual fingerprint of a user. ### Claim 28 (depends on 21) The method of claim 21, wherein the inaudible signal includes a content identifier (ID). ### Claim 29 (depends on 28) The method of claim 28, wherein the characteristic is based on the content ID. ### Claim 30 (depends on 21) The method of claim 21, wherein the characteristic includes a content context of an audio input associated with the audible signal. ### Claim 31 An electronic device comprising: a receiver configured to detect an inaudible signal associated with a first audible signal of an audio input, the inaudible signal including one or more frequency signatures; a processor configured to: activate a response monitor for a predetermined time to detect a user gesture response based on the one or more frequency signatures; and generate a message based on a content characteristic of the first audible signal; and a transmitter configured to transmit the message to an environment control device on a condition that the user gesture response corresponds to the message and is received within the predetermined time. ### Claim 32 (depends on 31) The electronic device of claim 31, wherein the environment control device is at least one of a lighting device, a thermostat, a camera, a wearable article, an aroma dispersion device, or a furniture article. ### Claim 33 (depends on 31) The electronic device of claim 31, wherein the one or more frequency signatures correspond to one or more voice-activated electronic device types. ### Claim 34 (depends on 31) The electronic device of claim 31, wherein the response monitor further detects a user voice response. ### Claim 35 (depends on 31) The electronic device of claim 31, wherein the processor is further configured to activate the response monitor with or without a wake command. ### Claim 36 (depends on 31) The electronic device of claim 31, wherein the processor is further configured to activate a camera to activate the response monitor. ### Claim 37 (depends on 31) The electronic device of claim 31 further comprising: a microphone configured to receive a second audible signal as a voice input. ### Claim 38 (depends on 31) The electronic device of claim 31, wherein the inaudible signal includes a content identifier (ID). ### Claim 39 (depends on 38) The electronic device of claim 38, wherein the content characteristic is based on the content ID. ### Claim 40 A method comprising: detecting a first signal associated with a second signal of an audio input, the first signal including one or more frequency signatures corresponding to one or more devices; determining a characteristic of the second signal based on the first signal; responsive to the detection of at least one of the one or more frequency signatures in the first signal, activating a monitor to detect a gesture within a predefined time; and responsive to the gesture being detected within the predefined time, transmitting a message generated based on the characteristic.