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公开(公告)号：US10404221B2
公开(公告)日：2019-09-03
申请号：US15799770
申请日：2017-10-31
Applicant: THX Ltd.
Inventor： Owen Jones , Lawrence R. Fincham , Andrew Mason
Abstract: An amplifier circuit that includes a first amplifier that has a first input that receives an input signal, a second input and an output. The amplifier circuit also includes a second amplifier that has a first input that is coupled to the output of said the amplifier and a second input. The circuit further includes a first impedance network Z1, a second impedance network Z2, a third impedance network Z3 and a fourth impedance network Z4. The first impedance network Z1 is coupled to a load and the second input of the second amplifier, the second impedance Z2 is connected the output of the first amplifier and the second input of the first amplifier, the third impedance Z3 is connected to the output of the first amplifier and the load, the fourth impedance Z4 is connected the output of the second amplifier and the second input of said first amplifier.
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公开(公告)号：US20170164097A1
公开(公告)日：2017-06-08
申请号：US15433968
申请日：2017-02-15
Applicant: THX Ltd.
Inventor： Lawrence R. Fincham
CPC classification number: H04R1/2896 , H04R1/02 , H04R1/2869 , H04R1/403 , H04R5/02 , H04R2201/403
Abstract: A narrow-profile balanced subwoofer or similar speaker includes a number of drivers placed side by side in the same lateral plane, with a first set of drivers facing one direction and second set of drivers facing the opposite direction. Their orientation is such that the sum of the forces from the first set of drivers is equal and opposite the sum of the forces from the second set of drivers, thus cancelling, and the sum of the moments from all of the drivers about a center or pivot point substantially equals zero. The speaker may include three or more drivers, symmetrically or asymmetrically spaced. The drivers may be of the same or different sizes, and the audio signal amplitudes may be adjusted to help balance the speaker. Each set of drivers may output sound into separate sound ducts, which may output sound from one or more apertures.
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公开(公告)号：US09609405B2
公开(公告)日：2017-03-28
申请号：US14203410
申请日：2014-03-10
Applicant: THX Ltd
Inventor： Lawrence R. Fincham
CPC classification number: H04R1/2896 , H04R1/02 , H04R1/2869 , H04R1/403 , H04R5/02 , H04R2201/403
Abstract: A narrow-profile balanced subwoofer or similar speaker includes a number of drivers placed side by side in the same lateral plane, with a first set of drivers facing one direction and second set of drivers facing the opposite direction. Their orientation is such that the sum of the forces from the first set of drivers is equal and opposite the sum of the forces from the second set of drivers, thus cancelling, and the sum of the moments from all of the drivers about a center or pivot point substantially equals zero. The speaker may include three or more drivers, symmetrically or asymmetrically spaced. The drivers may be of the same or different sizes, and the audio signal amplitudes may be adjusted to help balance the speaker. Each set of drivers may output sound into separate sound ducts, which may output sound from one or more apertures.
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公开(公告)号：US20160099657A1
公开(公告)日：2016-04-07
申请号：US14873043
申请日：2015-10-01
Applicant: THX Ltd.
Inventor： Owen Jones , Andrew Mason , Lawrence R. Fincham
IPC: H02M7/06
Abstract: A power supply that includes a first current generator circuit that is coupled to a first transformer and generates a first waveform and a second current generator circuit that is coupled to a second transformer, and generates a second waveform that is out of phase with the first waveform. The first and second waveforms are rectified and combined into a DC output signal. The power supply includes a first coupling circuit that couples the first current generator circuit to the first transformer and a second coupling circuit that couples the second current generator circuit to the second transformer.
Abstract translation: 一种电源，包括耦合到第一变压器并产生第一波形的第一电流发生器电路和耦合到第二变压器的第二电流发生器电路，并且产生与第一波形异相的第二波形 。 第一和第二波形被整流并组合成直流输出信号。 电源包括将第一电流发生器电路耦合到第一变压器的第一耦合电路和将第二电流发生器电路耦合到第二变压器的第二耦合电路。
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公开(公告)号：US11246001B2
公开(公告)日：2022-02-08
申请号：US16857033
申请日：2020-04-23
Applicant: THX Ltd.
Inventor： Russell Gray
IPC: H04S7/00
Abstract: Embodiments provide methods, apparatuses, and systems for performing crosstalk cancellation and/or generation of virtual speakers. An audio processor may include a crosstalk cancellation circuit and a linearization circuit. The linearization circuit may offset the frequency response of the crosstalk cancellation circuit to provide an overall frequency response that is flat. A virtual speaker circuit may receive an input signal associated with an output channel and pass the input signal to the output channel unmodified. The virtual speaker circuit generates a virtualization signal based on the input signal and passes the virtualization signal to another physical channel. The virtualization signal may be generated further based on an ipsilateral head-related transfer function (HRTF) and a contralateral HRTF that correspond to a virtual speaker location of a virtual speaker generated by the virtual speaker circuit. Other embodiments may be described and/or claimed.
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Patent Agency Ranking
公开(公告)号：US10784827B2
公开(公告)日：2020-09-22
申请号：US16053729
申请日：2018-08-02
Applicant: THX LTD.
Inventor： Andrew John Mason
IPC: H03F3/217 , H03F3/185 , H02J7/02 , H02J7/00 , H02J7/06 , H04R3/00 , H02J7/04 , H02J7/34 , H02M3/158
Abstract: Embodiments provide a power management system for a battery-powered audio device. The system includes bi-directional power conversion and control circuitry to implement a corresponding control scheme. The system may be switchable between a charge mode, during which the power conversion and control circuitry charges the battery of the audio device and the AC/DC adapter provides an amplifier supply voltage to one or more amplifiers of the audio device, and a discharge mode, in which the power conversion and control circuitry may provide a regulated amplifier supply voltage to the one or more amplifiers that is regulated based on one or more operating conditions of the system. The system may provide reduced cost and reduced power consumption and reduced size compared with prior systems.
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公开(公告)号：US10298142B2
公开(公告)日：2019-05-21
申请号：US14873043
申请日：2015-10-01
Applicant: THX Ltd.
Inventor： Owen Jones , Andrew Mason , Lawrence R. Fincham
Abstract: A power supply that includes a first current generator circuit that is coupled to a first transformer and generates a first waveform and a second current generator circuit that is coupled to a second transformer, and generates a second waveform that is out of phase with the first waveform. The first and second waveforms are rectified and combined into a DC output signal. The power supply includes a first coupling circuit that couples the first current generator circuit to the first transformer and a second coupling circuit that couples the second current generator circuit to the second transformer.
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公开(公告)号：US20140333653A1
公开(公告)日：2014-11-13
申请号：US14446105
申请日：2014-07-29
Applicant: THX, Ltd
Inventor： Peter Polit , Robert C. Carroll
CPC classification number: G06Q10/20 , G06K15/00 , G09G3/006 , G09G2320/0666 , G09G2320/0693 , G09G2370/02 , H04N1/00087 , H04N5/247 , H04N17/00
Abstract: A method and system according to the disclosure facilitates subscription based access to services for image systems including an image acquisition device configured to generate image data describing a target object in a target area of the image acquisition device and an image display device configured to generate a human perceptible rendering of the target object based on the image data.
Abstract translation: 根据本公开的方法和系统有助于基于订阅的对图像系统的服务的访问，包括被配置为生成描述图像获取装置的目标区域中的目标对象的图像数据的图像获取装置，以及被配置为生成人 基于图像数据对目标对象的可察觉的呈现。
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公开(公告)号：US20190044486A1
公开(公告)日：2019-02-07
申请号：US16053729
申请日：2018-08-02
Applicant: THX LTD.
Inventor： Andrew John Mason
Abstract: Embodiments provide a power management system for a battery-powered audio device. The system includes bi-directional power conversion and control circuitry to implement a corresponding control scheme. The system may be switchable between a charge mode, during which the power conversion and control circuitry charges the battery of the audio device and the AC/DC adapter provides an amplifier supply voltage to one or more amplifiers of the audio device, and a discharge mode, in which the power conversion and control circuitry may provide a regulated amplifier supply voltage to the one or more amplifiers that is regulated based on one or more operating conditions of the system. The system may provide reduced cost and reduced power consumption and reduced size compared with prior systems.
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公开(公告)号：US20180123531A1
公开(公告)日：2018-05-03
申请号：US15799770
申请日：2017-10-31
Applicant: THX Ltd.
Inventor： Owen Jones , Lawrence R. Fincham , Andrew Mason
CPC classification number: H03F1/34 , H03F3/183 , H03F3/187 , H03F3/45475 , H03F3/605 , H03F2200/03 , H03F2200/135 , H03F2203/45118 , H03F2203/45138 , H03F2203/45148
Abstract: An amplifier circuit that includes a first amplifier that has a first input that receives an input signal, a second input and an output. The amplifier circuit also includes a second amplifier that has a first input that is coupled to the output of said the amplifier and a second input. The circuit further includes a first impedance network Z1, a second impedance network Z2, a third impedance network Z3 and a fourth impedance network Z4. The first impedance network Z1 is coupled to a load and the second input of the second amplifier, the second impedance Z2 is connected the output of the first amplifier and the second input of the first amplifier, the third impedance Z3 is connected to the output of the first amplifier and the load, the fourth impedance Z4 is connected the output of the second amplifier and the second input of said first amplifier.
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