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公开(公告)号：US11538479B2
公开(公告)日：2022-12-27
申请号：US17130401
申请日：2020-12-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sung-No Lee , Hyochul Shin , Hyungdong Roh , Yong Ki Lee
Abstract: Disclosed is an electronic device which includes an audio processing block for voice recognition in a low-power mode. The electronic device includes a digital microphone that receives a voice signal from a user and converts the received voice signal into a PDM signal, and a DMIC interface circuit. The DMIC interface circuit includes a PDM-PCM converting block that converts the PDM signal into a PCM signal, a maxscale gain tuning block that tunes a maxscale gain of the PCM signal received from the PDM-PCM converting block based on a distance information indicating a physical distance between the user and the electronic device acquired in advance of the converting of the PDM signal, and an anti-aliasing block that performs filtering for acquiring voice data of a target frequency band associated with a PCM signal output from the maxscale gain tuning block.
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公开(公告)号：US09888320B2
公开(公告)日：2018-02-06
申请号：US15172877
申请日：2016-06-03
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Hyungdong Roh , Myung-Jin Lee , Yonghee Lee
CPC classification number: H04R5/04 , H01R24/58 , H01R2107/00 , H04R1/1041 , H04R29/00 , H04R2420/03
Abstract: Disclosed is an audio device including an audio codec circuit connected to a first channel electrode, a second channel electrode, and a microphone detection electrode, and a jack detection circuit connected to a first channel detection electrode, a ground detection electrode, and the microphone detection electrode, and, in response to voltages of the first channel detection electrode and the ground detection electrode corresponding to a ground voltage, the jack detection circuit detects insertion of a jack, applies the ground voltage to the ground detection electrode, and applies a bias voltage to the microphone detection electrode.
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3.发明申请DELTA SIGMA MODULATOR FOR SHAPING NOISE AND AUDIO CODEC HAVING THE SAME 有权用于形成噪声的DELTA SIGMA调制器和具有该噪声的音频编码公开(公告)号：US20170019123A1
公开(公告)日：2017-01-19
申请号：US15097715
申请日：2016-04-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mooyeol Choi , Hyungdong Roh , Bai-Sun Kong , Sunwoo Kwon , Myung-Jin Lee
Abstract: A delta-sigma modulator includes a loop filter, a quantizer configured to change an analog output signal into a digital signal, and a digital-to-analog converter configured to receive the digital signal and including a first capacitor and a second capacitor. In a first sampling period, the first capacitor is discharged, and at the same time, the second capacitor is charged with a reference voltage. In a second sampling period, the digital signal includes noise caused by a clock jitter, the first capacitor is charged with a reference voltage, and the second capacitor is discharged and generates a charge corresponding to the noise. In a next first sampling period, the first capacitor is discharged, and at the same time, the second capacitor generates a noise current corresponding to the noise using the charge and is charged with a reference voltage.
Abstract translation: Δ-Σ调制器包括环路滤波器，被配置为将模拟输出信号改变为数字信号的量化器，以及被配置为接收数字信号并包括第一电容器和第二电容器的数/模转换器。 在第一采样周期中，第一电容器被放电，同时第二电容器被充以基准电压。 在第二采样周期中，数字信号包括由时钟抖动引起的噪声，第一电容器用参考电压充电，并且第二电容器被放电并产生对应于噪声的电荷。 在接下来的第一采样周期中，第一电容器被放电，并且同时第二电容器使用电荷产生与噪声相对应的噪声电流并且对基准电压进行充电。
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Patent Agency Ranking
公开(公告)号：US10965299B1
公开(公告)日：2021-03-30
申请号：US16887535
申请日：2020-05-29
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jungho Kim , Michael Choi , Byungwoo Koo , Hyungdong Roh , Sunghan Do , Youngjae Cho
Abstract: A digital-to-analog converter (DAC) includes a current array having a plurality of unit cells in a plurality of rows and a plurality of columns, an arbitrary switch box and processing circuitry configured to randomly select a subset of rows among the plurality of rows based on a plurality of first row selection signals, the subset of rows including first unit cells among the plurality of unit cells, randomly select one row among the plurality of rows based on a plurality of second row selection signals, select a subset of columns among the plurality of columns based on column selection signals, second unit cells among the plurality of unit cells being included in both the one row and the subset of columns, and generate an analog output signal corresponding to a digital input signal based on the first unit cells and the second unit cells.
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公开(公告)号：US09949049B2
公开(公告)日：2018-04-17
申请号：US15459022
申请日：2017-03-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyungdong Roh , Jaekeun Lee
IPC: H04R29/00
CPC classification number: H04R29/001 , H04R2420/05 , H04R2460/03
Abstract: An audio jack detection circuit includes an impedance detecting circuit configured to generate a detection signal corresponding to an impedance between a ground pin and a ground detection pin, which are in contact with a ground terminal of an audio jack socket, and a controller configured to determine a state of the audio jack socket based on the detection signal. A detection range of the impedance detected by the impedance detector may be controlled by varying a resistance of a pull-up resistor connected to the ground detection pin.
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公开(公告)号：US09986330B2
公开(公告)日：2018-05-29
申请号：US15586308
申请日：2017-05-04
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Hyungdong Roh , Jaekeun Lee
CPC classification number: H04R3/00 , H04R1/1041 , H04R5/04 , H04R29/00 , H04R29/001 , H04R2420/05
Abstract: An audio device includes a channel detection electrode and a jack detector configured to determine whether the channel detection electrode is in contact with a jack according to voltage variation of a detection node. The jack detector includes a first resistor coupled between the detection node and a first node to which a first voltage is supplied, a second resistor coupled between the detection node and the channel detection electrode, a third resistor coupled between the detection node and a second node, and a comparator configured to compare a voltage at the detection node with a reference voltage.
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公开(公告)号：US20170272877A1
公开(公告)日：2017-09-21
申请号：US15459022
申请日：2017-03-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyungdong Roh , Jaekeun Lee
IPC: H04R29/00
CPC classification number: H04R29/001 , H04R2420/05 , H04R2460/03
Abstract: An audio jack detection circuit includes an impedance detecting circuit configured to generate a detection signal corresponding to an impedance between a ground pin and a ground detection pin, which are in contact with a ground terminal of an audio jack socket, and a controller configured to determine a state of the audio jack socket based on the detection signal. A detection range of the impedance detected by the impedance detector may be controlled by varying a resistance of a pull-up resistor connected to the ground detection pin.
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公开(公告)号：US09742428B2
公开(公告)日：2017-08-22
申请号：US15097715
申请日：2016-04-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mooyeol Choi , Hyungdong Roh , Bai-Sun Kong , Sunwoo Kwon , Myung-Jin Lee
Abstract: A delta-sigma modulator includes a loop filter, a quantizer configured to change an analog output signal into a digital signal, and a digital-to-analog converter configured to receive the digital signal and including a first capacitor and a second capacitor. In a first sampling period, the first capacitor is discharged, and at the same time, the second capacitor is charged with a reference voltage. In a second sampling period, the digital signal includes noise caused by a clock jitter, the first capacitor is charged with a reference voltage, and the second capacitor is discharged and generates a charge corresponding to the noise. In a next first sampling period, the first capacitor is discharged, and at the same time, the second capacitor generates a noise current corresponding to the noise using the charge and is charged with a reference voltage.
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