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公开(公告)号：US11437991B2
公开(公告)日：2022-09-06
申请号：US17313039
申请日：2021-05-06
Applicant: Airoha Technology Corp.
Inventor： Hung-I Chen , Yu-Hua Liu
IPC: H03K17/687 , H04W52/02
Abstract: A control circuit for a main switch is provided. The control circuit includes an output voltage tracker, a main switch bias generator, and a reference current device. The output voltage tracker is coupled to the main output end and generates a first tracking voltage positively correlated to an output voltage. The main switch bias generator, in response to the first tracking voltage, generates a second tracking voltage substantially equal to the output voltage. The reference current device is coupled to the main switch bias generator and is used to generate a control voltage on a main control end. The reference current device is used to limit the maximum value of the output current. The main switch and a duplicating switching element of the main switch bias generator form a current mirror configuration circuit. The consuming current of the output voltage tracker is positively correlated to the output current.
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公开(公告)号：US20220240018A1
公开(公告)日：2022-07-28
申请号：US17570815
申请日：2022-01-07
Applicant: Airoha Technology Corp.
Inventor： Ming-Yi HSIEH
Abstract: The invention relates to methods, non-transitory computer-readable storage medium, and apparatus for transmitting wireless multi-channel data. A method for transmitting wireless multi-channel data, which is performed by a processing unit of a wireless master device, includes: determining a first physical channel to be jumped into for a first wireless slave device, and a second physical channel to be jumped into for a second wireless slave device; and when the first physical channel is different from the second physical channel, transmitting a first media packet to the first wireless slave device in the first physical channel and a second media packet to the second wireless slave device in the second physical channel in a transmission slot of a subevent. The first wireless slave device and the second wireless slave device are peer devices with each other.
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公开(公告)号：US11309119B2
公开(公告)日：2022-04-19
申请号：US16034680
申请日：2018-07-13
Applicant: Airoha Technology Corp.
Inventor： Kuo-Yu Tseng , Shih-Chieh Chien
Abstract: An on-chip balun transformer including a primary winding and a secondary winding is provided. The primary winding includes at least one parallel coil and a plurality of first serial semi-turn coils connected to the at least one parallel coil. The secondary winding, magnetically coupled to the primary winding, includes a plurality of second serial semi-turn coils connected to each other. At least one of the second serial semi-turn coils is located within the at least one parallel coil. The primary winding and the secondary winding are coplanar.
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公开(公告)号：US20210359679A1
公开(公告)日：2021-11-18
申请号：US17313039
申请日：2021-05-06
Applicant: Airoha Technology Corp.
Inventor： Hung-I CHEN , Yu-Hua LIU
IPC: H03K17/687
Abstract: A control circuit for a main switch is provided. The control circuit includes an output voltage tracker, a main switch bias generator, and a reference current device. The output voltage tracker is coupled to the main output end and generates a first tracking voltage positively correlated to an output voltage. The main switch bias generator, in response to the first tracking voltage, generates a second tracking voltage substantially equal to the output voltage. The reference current device is coupled to the main switch bias generator and is used to generate a control voltage on a main control end. The reference current device is used to limit the maximum value of the output current. The main switch and a duplicating switching element of the main switch bias generator form a current mirror configuration circuit. The consuming current of the output voltage tracker is positively correlated to the output current.
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公开(公告)号：US10425737B2
公开(公告)日：2019-09-24
申请号：US16151397
申请日：2018-10-04
Applicant: Airoha Technology Corp.
Inventor： Ming-Yi Hsieh
Abstract: The present invention discloses a wireless audio output device, including two audio output units. One of the audio output units is configured as a first role. The other one of the audio output units is configured as a second role. The first role is configured to establish a multicast link with a source device, to receive one or more media packets from the source device via the multicast link, and to perform bidirectional communication with the source device. The second role is configured to join the multicast link, to receive the one or more media packets from the source device via the multicast link, to perform unidirectional communication with the source device, and to perform unidirectional communication and/or bidirectional communication with the first role.
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公开(公告)号：US20170272056A1
公开(公告)日：2017-09-21
申请号：US15456665
申请日：2017-03-13
Applicant: Airoha Technology Corp.
Inventor： Heng-Chih Lin , Chin-Lung Yang
CPC classification number: H01P7/088 , H03B5/326 , H03H9/64 , H03H9/6403 , H03H9/6483 , H03H9/725 , H03H2210/012 , H03H2210/04 , H03J3/00 , H03L7/093 , H03L7/099
Abstract: An acoustic-wave device with active calibration mechanism is provided. The acoustic-wave device with active calibration mechanism includes at least one acoustic-wave duplexer, a voltage-controlled oscillator (VCO), a frequency discriminator and a control circuit. The acoustic-wave duplexer includes a TX filter and an RX filter. The voltage-controlled oscillator includes a calibration resonator and a tunable negative impedance circuit. The TX filter, the RX filter and the calibration resonator are disposed on the same piezoelectric substrate. The frequency discriminator generates a calibration signal according to a frequency deviation of the calibration resonator. The control circuit is connected to the acoustic-wave duplexer and the frequency discriminator. The control circuit adjusts an operating frequency of the TX filter or an operating frequency of the RX filter according to the calibration signal.
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公开(公告)号：US09705468B2
公开(公告)日：2017-07-11
申请号：US14594254
申请日：2015-01-12
Applicant: AIROHA TECHNOLOGY CORP.
Inventor： Tao-Yi Lee , Bing-Jye Kuo , Hsuan-An Wei
IPC: H03H7/46 , H03H7/12 , H03H7/01 , H03F1/56 , H03F3/195 , H03F3/24 , H03F3/68 , H03H7/06 , H03H7/09
CPC classification number: H03H7/461 , H03F1/565 , H03F3/195 , H03F3/245 , H03F3/68 , H03F2200/111 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03H7/0115 , H03H7/0153 , H03H7/06 , H03H7/09 , H03H7/12 , H03H7/175 , H03H7/1758 , H03H2007/013
Abstract: The present invention is related to an adjustable harmonic filtering device, mainly comprising a first connecting port, a second connecting port, a harmonic filtering unit, and an adjusting unit, in which a passive network is presented between the first connecting port and the second connecting port, as well as the harmonic filtering unit is connected to the passive network. The harmonic filtering unit comprises a first inductor and a first capacitor. The adjusting unit is adjacent to the first inductor of the harmonic filtering unit, and induced electromagnetically therewith. Thus, frequency-band of the harmonic, to be filtered out by the harmonic filtering unit, may be changed, allowing for reducing loss of signal occurring in the process of transmission between the first connecting port and the second connecting port effectively.
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公开(公告)号：US20170195762A1
公开(公告)日：2017-07-06
申请号：US15182643
申请日：2016-06-15
Applicant: Airoha Technology Corp.
Inventor： Heng-Chih Lin , Wen-Sheng Hou , Chien-Chen Lin
CPC classification number: H04R1/026 , F21V33/0056 , G05D1/0212 , G05D1/0291 , G05D1/12 , H04L67/125 , H04L67/18 , H04R5/02 , H04R27/00 , H04R2205/024 , H04R2420/07 , H04R2499/13 , H04W4/80 , H04W84/12
Abstract: A wireless speaker system including one or more self-propelled speaker device is provided. The self-propelled speaker device includes a processing unit, a wireless audio transmitter/receiver unit, a speaker unit, a tracking unit, and an actuator. The wireless audio transmitter/receiver unit is coupled to the processing unit and configured to receive an audio signal via a wireless transmission interface. The speaker unit is coupled to the processing unit and configured to produce sound according to the audio signal. The tracking unit is coupled to the processing unit and configured to track a location of a mobile device. The actuator is coupled to the processing unit. The processing unit controls the actuator according to the location of the mobile device. The actuator drives the self-propelled speaker device to move along with the mobile device.
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公开(公告)号：US20170170788A1
公开(公告)日：2017-06-15
申请号：US15202635
申请日：2016-07-06
Applicant: Airoha Technology Corp.
Inventor： Heng-Chih Lin , Chien-Kuang Lee , Yao-Te Chiu
CPC classification number: H03F1/0205 , H03F1/223 , H03F1/26 , H03F1/565 , H03F3/19 , H03F3/193 , H03F3/72 , H03F2200/111 , H03F2200/216 , H03F2200/294 , H03F2200/372 , H03F2200/451 , H03F2200/492 , H03F2203/7209
Abstract: A low-noise amplifier (LNA), a folded low-noise amplifier (folded LNA) and an amplifier circuit module are provided. The LNA includes a plurality of radio frequency (RF) input stages, at least one bias transistor and at least one radio frequency (RF) output stage. The bias transistor is connected to theRF input stages to provide a DC bias source to one of the RF input stages for isolating others of the RF input stages. The RF output stage is connected in parallel with the RF input stages, which share an adjustable input inductor.
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公开(公告)号：US09577660B1
公开(公告)日：2017-02-21
申请号：US15239920
申请日：2016-08-18
Applicant: Airoha Technology Corp.
Inventor： Yu-Hsuan Kang
CPC classification number: H03M1/46 , H03M1/1245
Abstract: Successive approximation ADC includes a digital-to-analog converter, a comparator, a comparison unit, a timing unit and a control logic circuit. The digital-to-analog converter converts a digital signal to a reference analog signal. The comparator compares an analog input signal with a reference analog voltage and generates a comparing signal. The comparison unit generates a comparison result signal according to the comparing signal. The timing unit generates a clock signal, and sequentially enables N supplementary clock signals corresponding to N bits when the comparison result signal is enabled. The control logic circuit updates the digital signal according to the comparing signal, and generates N bits of digital value sequentially from the most significant bit to the least significant bit, and then determines whether the digital value is valid according to whether the Nth supplementary clock signal corresponding to the least significant bit is enabled.
Abstract translation: 逐次逼近ADC包括数模转换器，比较器，比较单元，定时单元和控制逻辑电路。 数模转换器将数字信号转换为参考模拟信号。 比较器将模拟输入信号与参考模拟电压进行比较，并产生比较信号。 比较单元根据比较信号生成比较结果信号。 定时单元产生时钟信号，并且当比较结果信号被使能时，顺序启动对应于N位的N个辅助时钟信号。 控制逻辑电路根据比较信号更新数字信号，并从最高有效位顺序生成数字值N位到最低有效位，然后根据第N个辅助时钟信号是否确定数字值是否有效 对应于最低有效位被使能。
