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91. 发明授权

US11196158B2 Electric composite detection antenna 有权
公开(公告)号：US11196158B2
公开(公告)日：2021-12-07
申请号：US16002553
申请日：2018-06-07
申请人： HOLY STONE ENTERPRISE CO., LTD.
发明人： Chiu-Lin Chiang , Chang-Ching Lin , Chih-Chung Lin
IPC分类号： H01Q3/24 , H04B5/00 , H01Q19/02 , H01Q5/335 , G01V3/10 , H03G3/30 , H01Q7/00
摘要： An electric composite detection antenna is disclosed. The antenna includes two RF antenna disposed on two sides of the circuit system of the electronic device, and a RF compensation system is disposed in the circuit system and includes an inductive sensing coil, and the induction coil can detect signal attenuation of any RF antenna subjected to external interference, so as to generate a detection signal. The RF compensation system can notice the control unit, to quickly drive any antenna matching circuit to switch to the RF antenna which is not interfered, or to quickly adjust antenna power or adjust the matching value of the RF antenna between the external environment, so that the preset electronic device can perform the stable transmission RF signal through the RF antenna without external interference, and maintain better power for RF signal transmissions.

92. 发明授权

US11184779B2 Electronic device for controlling beam width and method thereof 有权
公开(公告)号：US11184779B2
公开(公告)日：2021-11-23
申请号：US16543890
申请日：2019-08-19
申请人： Samsung Electronics Co., Ltd.
发明人： Youngpo Lee , Taeyoon Kim , Chaiman Lim
IPC分类号： H04W16/28 , H04W4/02 , H04W88/06 , H03G3/30 , H03F3/193 , H04W64/00
摘要： An electronic device comprises a first communication circuit configured to transmit at least one radio frequency (RF) signal, at least one antenna structure, electrically coupled to the first communication circuit, and including a plurality of antenna elements, at least one processor operatively coupled to the first communication circuit, and memory operatively coupled to the at least one processor. The memory stores instructions that, when executed by the at least one processor, causes the processor to perform a plurality of operation. The plurality of operations comprises identifying mobility information of the electronic device, identifying a beam width of a beam formed by at least a part of the plurality of antenna elements based on at least part of the mobility information of the electronic device, the beam being used to search for or communicate with an external electronic device, and forming the beam having the identified beam width.

93. 发明授权

US11184714B2 Hearing device comprising a loop gain limiter 有权
公开(公告)号：US11184714B2
公开(公告)日：2021-11-23
申请号：US16801832
申请日：2020-02-26
申请人： Oticon A/S
发明人： Meng Guo , Bernhard Kuenzle , Martin Kuriger
IPC分类号： H04R25/00 , H03G3/30
摘要： A hearing device comprises an input transducer providing an input gain GI, a signal processor comprising a compressor for determining a frequency and level dependent desired compressor gain GP to compensate for a hearing impairment of the user, and to provide a resulting compressor gain G′P, and an output transducer for providing output stimuli perceivable as sound for the user based on a processed signal, the output transducer providing an output gain, GO. A resulting forward path gain G′ is defined in a logarithmic representation as GI+G′P+GO. The hearing device further comprises a loop gain estimator for continuously estimating a current loop gain ΔL(n), configured to provide a loop gain estimate within a predefined number of feedback loop delays after a feedback buildup has started, and a loop gain controller for dynamically controlling said resulting forward path gain G′ in dependence of said estimate of said current loop gain ΔL(n). A resulting loop gain, LG′, is determined as a sum of the resulting forward path gain G′ and a feedback gain H when given in a logarithmic representation. The loop gain controller is configured to provide that the resulting loop gain is limited to stay below a predefined value.

94. 发明授权

US11177786B1 Field effect transistor circuits 有权
公开(公告)号：US11177786B1
公开(公告)日：2021-11-16
申请号：US16866399
申请日：2020-05-04
申请人： Ronald Quan
发明人： Ronald Quan
IPC分类号： H03G3/30 , H03G1/00 , H03G3/00
摘要： A number of field effect transistor circuits include voltage controlled attenuators or voltage controlled processing circuits. Example circuits include modulators, lower distortion variable voltage controlled resistors, sine wave to triangle wave converters, and or servo controlled biasing circuits.

95. 发明申请

US20210351755A1 CLASS D AMPLIFIER CIRCUIT 有权
公开(公告)号：US20210351755A1
公开(公告)日：2021-11-11
申请号：US17386287
申请日：2021-07-27
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： John Paul LESSO , Toru IDO
IPC分类号： H03G3/30 , H03F3/217 , H03F1/26 , H03F1/32 , H03F3/187 , H03F1/34 , H03G7/00
摘要： This application relates to Class D amplifier circuits. A modulator controls a Class D output stage based on a modulator input signal (Dm) to generate an output signal (Vout) which is representative of an input signal (Din). An error block, which may comprise an ADC, generates an error signal (ε) from the output signal and the input signal. In various embodiments the extent to which the error signal (ε) contributes to the modulator input signal (Dm) is variable based on an indication of the amplitude of the input signal (Din). The error signal may be received at a first input of a signal selector block. The input signal may be received at a second input of the signal selector block. The signal selector block may be operable in first and second modes of operation, wherein in the first mode the modulator input signal is based at least in part on the error signal; and in the second mode the modulator input signal is based on the digital input signal and is independent of the error signal. The error signal can be used to reduce distortion at high signal levels but is not used at low signal levels and so the noise floor at low signal levels does not depend on the component of the error block.

96. 发明授权

US11172296B2 Volume management in a media playback system 有权
公开(公告)号：US11172296B2
公开(公告)日：2021-11-09
申请号：US16740751
申请日：2020-01-13
申请人： Sonos, Inc.
发明人： Jerome Agustin , Jonathan P. Lang , Mark W. Triplett
IPC分类号： H04R3/12 , H03G3/20 , G06F3/16 , H03G3/00 , H03G3/30
摘要： Example techniques may provide volume enhancements to a media playback system. An example implementation involves a first playback device in a first playback configuration playing audio at a first volume level and storing the first volume level in association with the first playback configuration. The first playback device receives instructions to change to a second playback configuration. Based on receiving the instructions, the first playback device joins a synchrony group with a second zone and adjusts the first playback device to play audio at a second volume level which is based on a volume level of a second playback device in the second zone. While in the second playback configuration, the first playback device receives instructions to change to the first playback configuration and, based on the instructions, leaves the synchrony group and adjusts the first playback device to play audio content at the stored first volume level.

97. 发明授权

US11165397B2 Apparatus and methods for true power detection 有权
公开(公告)号：US11165397B2
公开(公告)日：2021-11-02
申请号：US16749758
申请日：2020-01-22
申请人： Skyworks Solutions, Inc.
发明人： Foad Arfaei Malekzadeh , Abdulhadi Ebrahim Abdulhadi , Sanjeev Jain
IPC分类号： H03G3/30 , H03F3/24 , H03F3/193 , H03F1/56
摘要： Apparatus and methods for true power detection are provided herein. In certain embodiments, a power amplifier system includes an antenna, a directional coupler, and a power amplifier electrically connected to the antenna by way of a through line of the directional coupler. The power amplifier system further includes a combiner that combines a first coupled signal from a first end of the directional coupler's coupled line with a second coupled signal from a second end of the directional coupler's coupled line.

98. 发明授权

US11159136B2 Variable gain amplifier and method thereof 有权
公开(公告)号：US11159136B2
公开(公告)日：2021-10-26
申请号：US16730961
申请日：2019-12-30
申请人： Industrial Technology Research Institute
发明人： Jeng-Han Tsai , Yi-Tso Cheng , Wei-Tsung Li
IPC分类号： H03G3/30 , H03F1/02 , H03F3/21 , H03F3/19
摘要： A variable gain amplifier (VGA) is provided. The VGA includes at least one amplifier circuit, at least one current-steering circuit and at least one bias voltage circuit. Each current-steering circuit is coupled to its corresponding amplifier circuit. Each bias voltage circuit is coupled to its corresponding current-steering circuit to provide a positive bias voltage to each current-steering circuit.

99. 发明申请

US20210321948A1 CORONARY ARTERY DISEASE DETECTION SIGNAL PROCESSING SYSTEM AND METHOD 有权
公开(公告)号：US20210321948A1
公开(公告)日：2021-10-21
申请号：US17360716
申请日：2021-06-28
申请人： AUSCULSCIENCES, INC.
发明人： Jun ZHOU , Md Shahidul ISLAM , Jikang ZENG , Daniel LABONTÉ , Simon MARTIN , Brady LASKA , Sergey A. TELENKOV
IPC分类号： A61B5/00 , A61B5/318 , A61B7/04 , H03G3/30 , H04R3/04 , H04R1/46
摘要： An auscultatory sound-or-vibration sensor electronic test signal applied to a sound generator generates an acoustic sound signal, responsive to which an auscultatory sound-or-vibration sensor in proximity to the sound generator generates a corresponding auscultatory sound signal. The auscultatory sound-or-vibration sensor electronic test signal incorporates a plurality of frequency components, each frequency component of which incorporates an integral number of wavelengths and is terminated following a duration of time corresponding to the integral number of wavelengths after that frequency component is applied to the corresponding sound generator. A determination of whether or not the auscultatory sound-or-vibration sensor is functioning properly is made responsive to an analysis of a Fourier Transform of the auscultatory sound signal.

100. 发明授权

US11152893B2 Power amplifying circuit and power amplifier 有权
公开(公告)号：US11152893B2
公开(公告)日：2021-10-19
申请号：US16589332
申请日：2019-10-01
申请人： Murata Manufacturing Co., Ltd.
发明人： Takashi Yamada , Toshikazu Terashima , Yuuki Oomae
IPC分类号： H03F3/191 , H03F1/02 , H03G3/30 , H03F3/21 , H03F3/193
摘要： A power amplifying circuit includes a first amplifying unit that amplifies a first radio-frequency signal and a second amplifying unit that amplifies a second radio-frequency signal. The first amplifying unit includes a first matching circuit that performs impedance matching for a circuit in a preceding stage, and a first amplifying circuit that amplifies the first radio-frequency signal that has passed through the first matching circuit. The second amplifying unit includes a second matching circuit that performs impedance matching for the circuit in the preceding stage, a resistor including a first end and a second end, the first end being electrically connected to the second matching circuit, and a second amplifying circuit that is electrically connected to the second end of the resistor and that amplifies the second radio-frequency signal that has passed through the resistor.

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