Patents by Inventor Alireza Jabbari
Alireza Jabbari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9967673Abstract: An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.Type: GrantFiled: October 21, 2014Date of Patent: May 8, 2018Assignee: TYMPHANY HK LIMITEDInventors: Andrew David Unruh, Robert J. True, Edward T. Norcott, Jr., Jens-Peter Axelsson, Alireza Jabbari, David J. Prince, Kenneth L. Kantor, Ioannis Kanellakopoulos, Shaolin Wei
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Patent number: 9462388Abstract: An acoustic transducer includes a housing, a plurality of diaphragms suspended from the housing and separated into one or more groups, and one or more motors combined with the housing that operate in response to an electrical signal. The diaphragms of each group are driven by a respective motor to which all the diaphragms in the group are coupled and at least one motor has an indirect coupling with no direct mechanical connection to the diaphragms driven thereby. One or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers.Type: GrantFiled: October 21, 2014Date of Patent: October 4, 2016Assignee: TYMPHANY HK LIMITEDInventors: Andrew David Unruh, Robert J. True, Edward T. Norcott, Jr., Jens-Peter Axelsson, Alireza Jabbari, David J. Prince, Kenneth L. Kantor, Ioannis Kanellakopoulos, Shaolin Wei
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Patent number: 9301034Abstract: A method for operating an acoustic transducer is provided. The acoustic transducer includes a moving element and a fixed element, wherein the moving element is coupled to surrounding air. In the method, a signal-independent magnetic field is generated to urge the moving element into a rest position when no input signal is received; and a force is generated in response to the input signal and applying that force to the moving element to urge the moving element away from the rest position. The moving element is controlled by a combined influence of the signal-independent magnetic field and the signal-dependent force to generate acoustic vibrations in response to an audio input signal.Type: GrantFiled: October 21, 2014Date of Patent: March 29, 2016Assignee: TYMPHANY WORLDWIDE ENTERPRISES LIMITEDInventors: Kenneth L. Kantor, Ioannis Kanellakopoulos, Alireza Jabbari
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Publication number: 20150063624Abstract: A method for operating an acoustic transducer is provided. The acoustic transducer includes a moving element and a fixed element, wherein the moving element is coupled to surrounding air. In the method, a signal-independent magnetic field is generated to urge the moving element into a rest position when no input signal is received; and a force is generated in response to the input signal and applying that force to the moving element to urge the moving element away from the rest position. The moving element is controlled by a combined influence of the signal-independent magnetic field and the signal-dependent force to generate acoustic vibrations in response to an audio input signal.Type: ApplicationFiled: October 21, 2014Publication date: March 5, 2015Inventors: Kenneth L. KANTOR, Ioannis KANELLAKOPOULOS, Alireza JABBARI
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Publication number: 20150036868Abstract: An acoustic transducer includes a housing, a plurality of diaphragms suspended from the housing and separated into one or more groups, and one or more motors combined with the housing that operate in response to an electrical signal. The diaphragms of each group are driven by a respective motor to which all the diaphragms in the group are coupled and at least one motor has an indirect coupling with no direct mechanical connection to the diaphragms driven thereby. One or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers.Type: ApplicationFiled: October 21, 2014Publication date: February 5, 2015Inventors: Andrew David UNRUH, Robert J. TRUE, Edward T. NORCOTT, JR., Jens-Peter AXELSSON, Alireza JABBARI, David J. PRINCE, Kenneth L. KANTOR, Ioannis KANELLAKOPOULOS, Shaolin WEI
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Publication number: 20150036867Abstract: An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.Type: ApplicationFiled: October 21, 2014Publication date: February 5, 2015Inventors: Andrew David UNRUH, Robert J. TRUE, Edward T. NORCOTT, JR., Jens-Peter AXELSSON, Alireza JABBARI, David J. PRINCE, Kenneth L. KANTOR, Ioannis KANELLAKOPOULOS, Shaolin WEI
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Patent number: 8942409Abstract: An improved electrodynamic acoustic transducer eliminates or reduces the need for flexible or elastic materials to suspend an internal magnetic element by using both static and dynamic signal-dependent magnetic fields to control its movement. In one implementation, the transducer has a magnet that moves within a surrounding tube. This tube in turn supports one or more electromagnetic coils that generate a dynamic signal-dependent magnetic field that causes the internal magnetic element to vibrate. The surrounding tube also supports one or more magnets whose location on the tube is fixed and whose magnetic fields provide appropriate restoring forces acting on the internal magnetic element. These fixed magnets may be replaced or supplemented by ferromagnetic materials.Type: GrantFiled: June 3, 2005Date of Patent: January 27, 2015Assignee: Tymphany HK LimitedInventors: Kenneth L. Kantor, Ioannis Kanellakopoulos, Alireza Jabbari
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Patent number: 8897472Abstract: An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.Type: GrantFiled: June 3, 2005Date of Patent: November 25, 2014Assignee: Tymphany HK LimitedInventors: Andrew David Unruh, Robert J. True, Edward T. Norcott, Jr., Jens-Peter Axelsson, Alireza Jabbari, David J. Prince, Kenneth L. Kantor, Ioannis Kanellakopoulos, Shaolin Wei
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Publication number: 20090190791Abstract: An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.Type: ApplicationFiled: June 3, 2005Publication date: July 30, 2009Applicant: Tymphany CorporationInventors: Andrew David Unruh, Robert J. True, Edward T. Norcott Jr., Jens-Peter Axelsson, Alireza Jabbari, David J. Prince, Kenneth L. Kantor, Ioannis Kanellakopoulos, Shaolin Wei
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Publication number: 20080075319Abstract: An improved electrodynamic acoustic transducer eliminates or reduces the need for flexible or elastic materials to suspend an internal magnetic element by using both static and dynamic signal-dependent magnetic fields to control its movement. In one implementation, the transducer has a magnet that moves within a surrounding tube. This tube in turn supports one or more electromagnetic coils that generate a dynamic signal-dependent magnetic field that causes the internal magnetic element to vibrate. The surrounding tube also supports one or more magnets whose location on the tube is fixed and whose magnetic fields provide appropriate restoring forces acting on the internal magnetic element. These fixed magnets may be replaced or supplemented by ferromagnetic materials.Type: ApplicationFiled: June 3, 2005Publication date: March 27, 2008Applicant: Tymphany CorporationInventors: Kenneth Kantor, Ioannis Kanellakopoulos, Alireza Jabbari
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Patent number: 6925478Abstract: A system and methods for generating a variable rate filtered output using synchronous filters having the same filter sampling time, that avoids complexities of asynchronous filters. A system employs multiple filters that are staggered in time and set so that the output of one of the multiple filters is available whenever a secondary process requires state information. In another embodiment, the synchronous filters are programmable so as to change the filter sampling time. This configuration is possible when it is known that the prescribed time interval of the secondary process is longer than the filter sampling time and the prescribed time interval is an integer multiple of the filter sampling time. By using programmable filters, the number of filters required to accommodate a certain prescribed time interval can be minimized.Type: GrantFiled: December 19, 2000Date of Patent: August 2, 2005Assignee: Nikon CorporationInventors: Alireza Jabbari, David P Stumbo, Michael Sogard
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Publication number: 20020120656Abstract: A system and methods for generating a variable rate filtered output using synchronous filters having the same filter sampling time, that avoids complexities of asynchronous filters. A system employs multiple filters that are staggered in time and set so that the output of one of the multiple filters is available whenever a secondary process requires state information. In another embodiment, the synchronous filters are programmable so as to change the filter sampling time. This configuration is possible when it is known that the prescribed time interval of the secondary process is longer than the filter sampling time and the prescribed time interval is an integer multiple of the filter sampling time. By using programmable filters, the number of filters required to accommodate a certain prescribed time interval can be minimized.Type: ApplicationFiled: December 19, 2000Publication date: August 29, 2002Inventors: Alireza Jabbari, David P. Stumbo, Michael Sogard