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公开(公告)号：US10231047B2
公开(公告)日：2019-03-12
申请号：US15946194
申请日：2018-04-05
Applicant: Avnera Corporation
Inventor： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC: H04R1/10 , G10K11/178 , H04R3/00 , H04R29/00
Abstract: A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. The threshold corresponds to one or more of an audio response of the audio signal at a corresponding frequency and an audio response of a feedback microphone signal at a corresponding frequency, under one or more known conditions.
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公开(公告)号：US10198239B2
公开(公告)日：2019-02-05
申请号：US15470413
申请日：2017-03-27
Applicant: AVNERA CORPORATION
Inventor： Manpreet S. Khaira , Shawn O'Connor , Frank Prestrelski , Patrick Allen Quinn , Richard Andrew Sorensen , Eric Sorensen
IPC: G06F3/16 , G06F3/03 , G06F3/01 , G06F3/041 , G06F3/0346
Abstract: A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.
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公开(公告)号：US10135455B2
公开(公告)日：2018-11-20
申请号：US15799812
申请日：2017-10-31
Applicant: Avnera Corporation
Inventor： Jianping Wen , Garry Link , Wai Laing Lee
Abstract: A system can include an analog input port; a digital output port; and a successive approximation register (SAR) analog-to-digital converter (ADC). The SAR ADC can include a voltage comparator Vd having a first input, a second input, and an output; a first plurality of capacitors Cp[0:n] that are coupled with the analog input port and each have a top plate and a bottom plate; a second plurality of capacitors Cn[0:n] that are coupled with the analog input port and each have a top plate and a bottom plate; and a SAR controller coupled between the output of the voltage comparator Vd and the digital output port.
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公开(公告)号：US20180227659A1
公开(公告)日：2018-08-09
申请号：US15946194
申请日：2018-04-05
Applicant: Avnera Corporation
Inventor： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC: H04R1/10 , G10K11/178
CPC classification number: H04R1/1041 , G10K11/178 , G10K11/17855 , G10K2210/1081 , G10K2210/3021 , H04R1/1083 , H04R3/00 , H04R29/00 , H04R2410/05 , H04R2460/03
Abstract: A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. The threshold corresponds to one or more of an audio response of the audio signal at a corresponding frequency and an audio response of a feedback microphone signal at a corresponding frequency, under one or more known conditions.
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公开(公告)号：US09998827B2
公开(公告)日：2018-06-12
申请号：US15613738
申请日：2017-06-05
Applicant: Avnera Corporation
Inventor： Theodore Hetke , John Speth
CPC classification number: H04R3/12 , H04R2420/07 , H04R2420/09 , H04R2430/01 , H04W4/80
Abstract: A method for forming a complete ring network of a plurality of Bluetooth® speakers, the method including populating a configurable speaker register of each of the plurality of Bluetooth® speakers with an address of an upstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, populating the configurable speaker register of each of the plurality of Bluetooth® speakers with an address of a downstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, and coupling an audio source to one Bluetooth® speaker of the plurality of Bluetooth® speakers.
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Patent Agency Ranking
公开(公告)号：US09980034B2
公开(公告)日：2018-05-22
申请号：US15792394
申请日：2017-10-24
Applicant: Avnera Corporation
Inventor： Amit Kumar , Shankar Rathoud , Mike Wurtz , Eric Etheridge , Eric Sorensen
IPC: H04R1/10 , H04R29/00 , G10K11/178
CPC classification number: H04R1/1041 , G10K11/178 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , H04R1/1008 , H04R29/001 , H04R2460/01
Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.
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公开(公告)号：US09946277B2
公开(公告)日：2018-04-17
申请号：US15078894
申请日：2016-03-23
Applicant: AVNERA CORPORATION
Inventor： Christopher D. Nilson
CPC classification number: G05F1/468
Abstract: A start-up circuit for a bandgap reference voltage generator circuit, including a first native transistor with a drain connected to a supply voltage of the bandgap reference voltage generator circuit and a source connected to a gate of the first native transistor; a low voltage transistor with a source connected to ground, a drain connected to the source of the first native transistor, and a gate connected to a resistor; a second native transistor with a source connected to the resistor, a gate connected to the source of the first native transistor; a high voltage transistor with a drain connected to a drain of the second native transistor and a source connected to the supply voltage; and a transistor with a gate connected to the gate of the first high voltage transistor and a drain which provides a start-up current for the bandgap reference voltage generator circuit.
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公开(公告)号：US09686609B1
公开(公告)日：2017-06-20
申请号：US14320104
申请日：2014-06-30
Applicant: Avnera Corporation
Inventor： Chris O'Connor , Xudong Zhao
CPC classification number: H04R3/12 , G10L19/012 , H04R1/1041 , H04R5/04 , H04R29/001 , H04R2420/05 , H04R2460/03
Abstract: A low power, digital audio interface includes support for variable length coding depending on content of the audio data sent from the interface. A particularized coding system is implemented that uses techniques of silence detection, dynamic scaling, and periodic encoding to reduce sent data to a minimum. Other techniques include variable packet scaling based on an audio sample rate. Differential signaling techniques are also used. The digital audio interface may be used in a headphone interface to drive digital headphones. A detector in the interface may detect whether digital or analog headphones are coupled to a headphone jack and drive the headphone jack accordingly.
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公开(公告)号：US09621336B1
公开(公告)日：2017-04-11
申请号：US14471324
申请日：2014-08-28
Applicant: Avnera Corporation
Inventor： Samuel J. Peters, II , Eric P. Etheridge , Victor Lee Hansen , Alexander C. Stange
IPC: H04L7/033
CPC classification number: H04L7/033 , G06F13/4295 , H04L7/0029 , H04L7/02
Abstract: A system and a technique for recovering data from an input data stream without synchronization of an input sampling circuit to the input data stream determines a count of incoming samples (or frames) without generating a signal that is frequency-locked to the input data stream. A first clock is generated comprising a frequency that is greater than or equal to an expected frequency of the input data stream. A sample count is incremented in response to a sample received in the input data stream, and is decremented in response to a second clock signal. The second clock is generated from the first clock signal by passing the first clock signal if the sample count of the sample counter does not equal a predetermined sample count value and by blocking the first clock signal if the sample count equals the predetermined sample count value.
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公开(公告)号：US20170013345A1
公开(公告)日：2017-01-12
申请号：US14850859
申请日：2015-09-10
Applicant: Avnera Corporation
Inventor： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC: H04R1/10
CPC classification number: H04R1/1041 , G10K11/178 , G10K11/17855 , G10K2210/1081 , G10K2210/3021 , H04R1/1083 , H04R3/00 , H04R29/00 , H04R2410/05 , H04R2460/03
Abstract: A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. In another aspect, an off-ear detection (OED) system includes a headphone and an OED processor. The headphone has a speaker, a feedforward microphone, and a feedback microphone. The OED processor is configured to determine whether the headphone is off ear or on ear, based at least in part on a headphone audio signal, a feedforward microphone signal, and a feedback microphone signal.
Abstract translation: 一种耳机检测器，包括耳机和处理器。 耳机具有麦克风和扬声器，麦克风被配置为基于扬声器的输出产生音频信号。 处理器被配置为接收音频信号，确定音频信号的特性，并且基于特征与阈值的比较来评估耳机是耳朵还是耳朵。 在另一方面，一种耳朵检测（OED）系统包括耳机和OED处理器。 耳机具有扬声器，前馈麦克风和反馈麦克风。 OED处理器被配置为至少部分地基于耳机音频信号，前馈麦克风信号和反馈麦克风信号来确定耳机是否脱离耳朵或耳朵。
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