Patents Assigned to Revolabs, Inc.
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Patent number: 10334360Abstract: A signal processing unit calculates a first difference in time of arrival of sound from a sound source to a first and to a second microphone comprising a microphone array and calculates a second difference in time of arrival, which is the difference between the first difference in time of arrival and an actual time, of arrival, and determines the position of the sound source based on the sum of the first difference in time of arrival and the second difference in time of arrival.Type: GrantFiled: February 26, 2018Date of Patent: June 25, 2019Assignee: RevoLabs, IncInventor: Ryo Tanaka
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Patent number: 9928847Abstract: An audio or video conferencing system having an array comprised of two or more microphones and having one or more loudspeakers positioned proximate to the microphones. The conferencing system also has acoustic echo cancellation (AEC) functionality that removes direct and reverberant acoustic echo from microphone signals in two separate acoustic echo cancellation operations. The first AEC operation removes direct acoustic echo prior to a beamforming operation, and the second AEC operation removes reverberant acoustic echo from a microphone signal subsequent to the beamforming operation.Type: GrantFiled: August 4, 2017Date of Patent: March 27, 2018Assignee: Revolabs, Inc.Inventors: Pascal Cleve, Ryo Tanaka
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Patent number: 9401996Abstract: A digital audio conferencing system has a fixed base station that is in communication with a far end (R.E.) system over a communication network. The base station is associated with a wireless loudspeaker and one or more wireless microphones. The base station operates to receive F.E. audio signals to be played by the wireless loudspeaker, and it operates to remove acoustic echo picked up by the wireless microphones. A first clock controlling F.E. audio signal sampling at the base station, and a second clock controlling audio signal sampling and at a wireless microphone are synchronized to one master, reference clock that controls the operation of the base station. Acoustic echo included in an audio signal picked up by a wireless microphone is removed by AEC functionality running in the base station.Type: GrantFiled: December 16, 2014Date of Patent: July 26, 2016Assignee: RevoLabs, Inc.Inventor: Timothy D Root
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Patent number: 9344983Abstract: Systems and methods for adaptive OTA (over-the-air) synchronization of RF (radio frequency) base stations are described herein. Using these systems and methods, base stations in wireless audio systems can automatically identify externally sourced base station clocks and merge overlapping clock system domains, thereby eliminating the need for complex base station management and network configuration.Type: GrantFiled: August 10, 2015Date of Patent: May 17, 2016Assignee: RevoLabs, Inc.Inventors: Alexandre Sousa, Antonio Muchaxo, Jonathan Schau, Martin Bodley, Pascal Cleve
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Patent number: 9344049Abstract: An audio system is configured to support a number of wireless microphones, and each of the wireless microphones has one or more touch sensitive mute switches and a touch sensitive mute guard band switch. The mute guard band switch is connect to an electrically conductive surface that is proximate to a microphone peripheral surface that a user is likely to touch when they move the microphone. Logical instructions running in conjunction with a DSP associated with the microphone cause the audio system to override any mute commands it receives from any of the mute switches during the time that the guard band switch is activated.Type: GrantFiled: March 24, 2014Date of Patent: May 17, 2016Assignee: RevoLabs, Inc.Inventors: Mark Desmarais, Timothy D Root
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Patent number: 9276667Abstract: Systems and methods for wireless audio conferencing are described herein. In one embodiment, a wireless audio conferencing system is provided that includes a base unit configured to interface with a plurality of external communication systems, one or more wireless speakers, one or more wireless microphones, a handset configured to wirelessly control the base unit, and a charger tray separate from the base unit and configured to removably store and recharge the one or more wireless speakers, the one or more wireless microphones, and the handset. The one or more wireless speakers and the one or more wireless microphones are configured to communicate with the base unit to provide audio conferencing between a plurality of users. The systems and methods described herein can provide a high quality and adaptable audio conferencing system for use with a variety of communications systems.Type: GrantFiled: February 22, 2012Date of Patent: March 1, 2016Assignee: RevoLabs, Inc.Inventors: Martin R. Bodley, Jean-Pierre Carney, Mark Andrew DesMarais, Joshua Hallock Wilkie
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Patent number: 9271069Abstract: An audio conference system has a plurality of specially designed microphone housings into each of which a directional microphone is positioned. Each microphone housing is positioned entirely within the body of the audio conferencing system, the microphone housings are strategically positioned at each one of four corners of the audio conference system body in order to provide maximum exposure of a microphone to its operating environment, and the interior structure of the microphone housing is designing to reflect unwanted energy harmlessly away from the microphone. Each directional microphone is positioned in the microphone housing such that the most sensitive node in its polar response pattern is oriented normal (at right angles) to a line radiating outward from the center of the system.Type: GrantFiled: July 7, 2014Date of Patent: February 23, 2016Assignee: RevoLabs, IncInventors: Klaus Hartung, Scot T. Armstrong
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Patent number: 8965270Abstract: One or more audio conferencing systems are connected to a local network, and each conferencing system is comprised of a plurality of wireless microphones in communication with a plurality of antennas deployed in an array configuration. Each of the antennas comprising one of the audio conferencing systems is in direct communication with a base station and in indirect communication with a server which runs a centralized digital signal processing functionality. The digital signal processing functionality operates on audio information received from one or more far-end audio sources and from each of the one or more audio conferencing system.Type: GrantFiled: December 4, 2012Date of Patent: February 24, 2015Assignee: RevoLabs, Inc.Inventors: Timothy D. Root, Mark Desmarais, Holger Stoltze
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Publication number: 20140335838Abstract: A wireless audio conferencing system has one base station and a number of portable parts each of which is able to establish a communication link with the base station. The base station is controlled to initiate and to terminate communication sessions with other communication devices over a communications network such as a LAN or a WAN, and the base station includes a DSP the implements a digital radio and system application functionality that monitors and stores certain operational state characteristics associated with the portable parts. The base station uses the stored operational state characteristics associated with each portable part to determine whether, at the end of a communication session, a portable part is connected to a charging tray or not, and if not, the base station operates to transmit a warning message indicating that a portable part is not being charged.Type: ApplicationFiled: May 7, 2013Publication date: November 13, 2014Applicant: REVOLABS, INC.Inventor: TIMOTHY ROOT
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Patent number: 8879720Abstract: An audio conferencing system having a base station, a loud speaker and one or more microphones generally operates to receive a F.E. audio signal, play the signal, and to receive a N.E. audio signal at the microphone that includes the F.E. audio signal modified by an echo path and a N.E. audio signal. The base station includes an adaptive filter whose length is controlled to be variable depending upon activity detected at each of one or more filter elements comprising the adaptive filter.Type: GrantFiled: March 17, 2013Date of Patent: November 4, 2014Assignee: RevoLabs, Inc.Inventor: Pascal Cleve
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Publication number: 20140205105Abstract: An audio conferencing system has a base station, a speaker and one or more mobile microphones, and it operates to receive audio information from both a far-end audio source and a near-end audio source and to process the audio information for transmission to a far-end audio conferencing system. At least one of the mobile microphones has a motion detection device and operates to send detected motion information to the base station. The base station operates to control the processing of audio information it receives from the microphone according to the detected microphone motion information.Type: ApplicationFiled: January 21, 2013Publication date: July 24, 2014Applicant: REVOLABS, INC.Inventors: PASCAL CLEVE, THOMAS COTTON, MARK DESMARAIS, JONATHAN SCHAU
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Publication number: 20130150114Abstract: Various methods and devices are provided for a wireless audio system for a number of users. The system includes a base unit that is adapted to removably store, recharge and communicate with various communication modules, including personal microphone modules, table-top microphones, and audio adapters. The system also includes a plurality of personal microphone modules that are each adapted to be removable and coupled, for example, to a user's clothing, and further, are adapted to communicate wirelessly with the base unit, and table-top microphones that are adapted to communicate wirelessly with the base unit.Type: ApplicationFiled: January 9, 2013Publication date: June 13, 2013Applicant: Revolabs, Inc.Inventors: Martin Reed Bodley, Jean-Pierre Carney
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Publication number: 20120014534Abstract: Various methods and devices are provided for a wireless audio system for a number of users. The system includes a base unit that is adapted to removably store, recharge and communicate with various communication modules, including personal microphone modules, table-top microphones, and audio adapters. The system also includes a plurality of personal microphone modules that are each adapted to be removable and coupled, for example, to a user's clothing, and further, are adapted to communicate wirelessly with the base unit, and table-top microphones that are adapted to communicate wirelessly with the base unit.Type: ApplicationFiled: February 8, 2010Publication date: January 19, 2012Applicant: REVOLABS ,INC.Inventors: Martin Reed Bodley, Jean-Pierre Carney
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Patent number: D628560Type: GrantFiled: February 9, 2009Date of Patent: December 7, 2010Assignee: Revolabs, Inc.Inventors: Martin Reed Bodley, Jean-Pierre Carney, Stephen Lyman
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Patent number: D629355Type: GrantFiled: February 9, 2009Date of Patent: December 21, 2010Assignee: Revolabs, Inc.Inventors: Martin Reed Bodley, Jean-Pierre Carney, Stephen Lyman
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Patent number: D714249Type: GrantFiled: March 12, 2013Date of Patent: September 30, 2014Assignee: RevoLabs, Inc.Inventors: Jean-Pierre Carney, Timothy Root, Holger Stoltze, Steven Lyman, Scott E Stropkay, Jason J Cooper, Arvin Abadilla
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Patent number: D716772Type: GrantFiled: December 17, 2013Date of Patent: November 4, 2014Assignee: RevoLabs, Inc.Inventors: Dio Climaco Cavero, Mathieu Zastawny, Adam Sebastian Sanchez, Timothy D Root, Marc Cremer, Jean-Pierre Carney, Stephen Lyman, Holger Stoltze, Jonathan Schau
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Patent number: D725624Type: GrantFiled: January 27, 2014Date of Patent: March 31, 2015Assignee: RevoLabs, Inc.Inventors: Jean-Pierre Carney, Holger Stoltze, Stephen Lyman, Timothy D Root, Steven M Dibdin, Bill Fiebel, Mathieu Zastawny
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Patent number: D736188Type: GrantFiled: June 27, 2014Date of Patent: August 11, 2015Assignee: RevoLabs, Inc.Inventors: Dio C Cavero, Mathieu Zastawny, Adam S Sanchez, Timothy D Root, Marc Cremer, Jean-Pierre Carney, Holger Stoltze, Stephen Lyman, Jonathan Schau, Klaus Hartung
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Patent number: D803805Type: GrantFiled: October 31, 2016Date of Patent: November 28, 2017Assignee: RevoLabs, Inc.Inventors: John Coffey, Jean Pierre Carney, Timothy D Root, Barret Wolber, John W Wolber, Jonathan Schau, Mathieu Zastawny, Lance Hazelton, John Moldauer