公开(公告)号：US12154536B2

公开(公告)日：2024-11-26

申请号：US17978239

申请日：2022-11-01

Applicant: Airoha Technology Corp.

Inventor： Chao-Ling Hsu ,  Li-Wen Chi ,  Shih-Kai He

IPC: G10K11/178

Abstract: An active noise control (ANC) circuit is used for generating an anti-noise signal, and has a plurality of filters including at least one first filter and at least one second filter. The at least one first filter generates at least one first filter output, wherein each of the at least one first filter has a first filter type. The at least one second filter generates at least one second filter output, wherein each of the at least one second filter has a second filter type different from the first filter type. The anti-noise signal is jointly controlled by the at least one first filter output and the at least one second filter output. The at least one first filter and the at least one second filter are connected in a parallel fashion.

公开(公告)号：US20240364571A1

公开(公告)日：2024-10-31

申请号：US18138743

申请日：2023-04-25

Applicant: Airoha Technology Corp.

Inventor： Jeng-Hong Chen ,  Chun-Yuan Huang ,  Yun-Xuan Zhang

IPC: H04L27/26 ,  H04L27/00

CPC classification number: H04L27/2675 ,  H04L27/0014 ,  H04L2027/0026

Abstract: A frequency offset (FO) estimation method includes: sampling a frequency-modulated repetition-coded segment of a packet to generate a plurality of samples; obtaining a frequency deviation (FD) value for each of a plurality of target samples selected from the plurality of samples; and estimating an FO value through accumulating complete FD values of the plurality of target samples.

公开(公告)号：US20240276191A1

公开(公告)日：2024-08-15

申请号：US18647799

申请日：2024-04-26

Applicant: Airoha Technology Corp.

Inventor： Wen-Tsung HUANG

IPC: H04W4/80 ,  H04L1/00 ,  H04W76/10

CPC classification number: H04W4/80 ,  H04L1/0045 ,  H04W76/10

Abstract: The invention relates to a method, a non-transitory computer-readable storage medium, and an apparatus for receiving Bluetooth packets and correcting error bits therein. The method, which is performed by a processing unit, includes: receiving Bluetooth packets from radio frequency (RF) signal; verifying a unique synthesized packet with a checksum thereof when the unique synthesized packet can be generated from the Bluetooth packets; and transmitting a synthesized packet that has passed a verification to a program module for an application when the unique synthesized packet passes the verification.

公开(公告)号：US20230421347A1

公开(公告)日：2023-12-28

申请号：US17848399

申请日：2022-06-24

Applicant: Airoha Technology Corp.

Inventor： Ming-Yi Hsieh

IPC: H04L7/00

CPC classification number: H04L7/0079 ,  H04L7/0016

Abstract: An electronic device includes a receiver circuit, a clock generator circuit, and a clock control circuit. The receiver circuit receives first clock information associated with a first clock of another electronic device. The clock generator circuit generates a second clock for the electronic device. The clock control circuit obtains second clock information associated with the second clock, generates a clock control signal according to the first clock information and the second clock information, and outputs the clock control signal to the clock generator circuit, where the clock generator circuit adjusts the second clock in response to the clock control signal.

公开(公告)号：US20230388099A1

公开(公告)日：2023-11-30

申请号：US18073528

申请日：2022-12-01

Applicant: Airoha Technology Corp.

Inventor： Chia-Hsing Hsu ,  Chun-Chia Huang

IPC: H04L7/00 ,  H04J3/06

CPC classification number: H04L7/0079 ,  H04J3/0688

Abstract: A 100BASE-TX transceiver includes a receive (RX) circuit, a transmit (TX) circuit, a clock generator circuit, a clock and data recovery (CDR) circuit, and a clock multiplexer circuit. The RX circuit receives an input data to generate an RX data. The TX circuit transmits a TX data according to a TX clock, to generate an output data. The clock generator circuit generates an output clock. The CDR circuit generates an RX recovered clock according to the RX data. The clock multiplexer circuit receives the output clock and the RX recovered clock, and outputs the TX clock that is selected from the output clock and the RX recovered clock.

公开(公告)号：US20230362609A1

公开(公告)日：2023-11-09

申请号：US17737095

申请日：2022-05-05

Applicant: Airoha Technology Corp.

Inventor： Yun-Xuan ZHANG ,  Tzu-Kuan YANG

IPC: H04W4/80 ,  H04L1/00

CPC classification number: H04W4/80 ,  H04L1/0002

Abstract: A Bluetooth transmitter, a Bluetooth receiver, and a receiver are provided. The Bluetooth transmitter includes modulation modules, up-conversion modules, and an RF transmitting circuit. The modulation modules modulate transmission bitstreams to generate multiple pairs of modulated signals. The up-conversion modules up-convert the pairs of modulated signals to multiple pairs of up-converted signals. The RF transmitting circuit transmits an output signal based on the pairs of up-converted signals. The Bluetooth receiver includes an RF receiving circuit, down-conversion modules, and de-modulators. The RF receiving circuit transforms an input signal into a pair of analog filtered signals. The down-conversion modules generate pairs of down-converted signals based on the pair of analog filtered signals. The de-modulators generate received bitstreams by demodulating the pairs of down-converted signals.

公开(公告)号：US20230262792A1

公开(公告)日：2023-08-17

申请号：US17673005

申请日：2022-02-16

Applicant: PIXART IMAGING INC. ,  AIROHA TECHNOLOGY CORP.

Inventor： Ping-Shun ZEUNG ,  Chih-Wei SUNG ,  Yu-Feng CHEN

IPC: H04W76/14 ,  H04W76/30 ,  H04W76/25 ,  H04R1/10

CPC classification number: H04W76/14 ,  H04W76/30 ,  H04W76/25 ,  H04R1/1016 ,  H04R1/1025 ,  H04R1/1041 ,  H04W4/80

Abstract: There is provided a wireless device including an earphone set and a charging cradle. The charging cradle is used as means for charging the earphone set. The charging cradle further records connection information of multiple external devices that have been BT connected to the charging cradle. The earphone set receives a connection command from the charging cradle to accordingly form an audio connection to one of the multiple external devices. The charging cradle is further used as a communication medium between the multiple external devices.

公开(公告)号：US20230131573A1

公开(公告)日：2023-04-27

申请号：US17699631

申请日：2022-03-21

Applicant: AIROHA TECHNOLOGY CORP.

Inventor： Chao-Ling HSU ,  Li-Wen CHI ,  Kai-Sheng CHEN

IPC: G10K11/178

Abstract: The present invention relates to an active noise cancellation integrated circuit for stacking multiple anti-noise signals, an associated method, and an active noise cancellation headphone using the same. The method is applicable to an audio playback device with multiple ANC filtering units. The method includes: acquiring an anti-noise signal from an ANC filtering unit; generating a decoupled signal by processing the anti-noise signal with the transfer function of a physical channel and operations of other ANC filtering units; performing a signal superposition, wherein an anti-noise signal from another ANC filtering unit is superposed with the decoupled signal; and performing an audio playback based on the superposed signal and an audio signal such that noise is eliminated.

公开(公告)号：US11601297B2

公开(公告)日：2023-03-07

申请号：US17094913

申请日：2020-11-11

Applicant: Airoha Technology Corp.

Inventor： Ming-Yi Hsieh

IPC: H04L12/18 ,  H04W76/40 ,  H04W36/24 ,  H04L1/08

Abstract: A wireless audio output device includes a plurality of audio output units, first and second audio output units among the audio output units being set as first and second roles, respectively. The first role is to establish a multicast link with a source device, to receive one or more media packets from the source device on the multicast link, and to perform bidirectional communication with the source device. The second role is to join the multicast link, to receive the one or more media packets from the source device on the multicast link, to perform unidirectional communication with the source device, and to perform unidirectional and/or bidirectional communication with the first role. An extended packet time slot is divided and each of the first role and the second role transmits or receives one or more extended packets during the extended packet time slot.

公开(公告)号：US20230054927A1

公开(公告)日：2023-02-23

申请号：US17689436

申请日：2022-03-08

Applicant: Airoha Technology Corp.

Inventor： Chao-Ling HSU ,  Li-Wen CHI

IPC: G10K11/178 ,  H04R1/10

Abstract: The invention relates to an adaptive active noise cancellation apparatus and an audio playback system using the same. The adaptive active noise cancellation apparatus shapes an error signal and a noise signal according to a shape of an ideal noise. After that, the shaped noise signal and the shaped error signal are sent into a parameter adjusting unit to perform an adaptive parameter adjustment. Thus, the adaptive noise filter unit is not only can adaptively suppress noise and minimize the error signal, but also can suppress specific frequencies that are sensitive to the human ear.