公开(公告)号：US08884693B2

公开(公告)日：2014-11-11

申请号：US13713582

申请日：2012-12-13

Applicant: Samsung Electronics Co. Ltd.

Inventor： Jong-Woo Lee

IPC: H03G3/20 ,  H03G3/00 ,  H03G1/00

CPC classification number: H03G3/002 ,  H03F3/45475 ,  H03F2203/45512 ,  H03F2203/45522 ,  H03G1/0088 ,  H03G3/001 ,  H03G9/20 ,  H03H11/1291

Abstract: A variable gain amplifier circuit is provided. The circuit includes an operational amplifier for amplifying and outputting an input signal according to a cutoff frequency and a gain, a feedback resistor for changing a first resistance according to a first digital control code value which determines the cutoff frequency, and an input resistor for changing a second resistance according to a second digital control code value which is determined based on a difference of the first digital control code value and a gain code value. The gain is determined by a ratio of the first resistance and the second resistance and linearly changes on a decibel (dB) basis according to the first digital control code value, the cutoff frequency is inversely proportional to the first resistance and linearly changes on a log scale, and the variable gain can be easily set using the control code.

Abstract translation: 提供可变增益放大器电路。 该电路包括用于根据截止频率和增益放大和输出输入信号的运算放大器，用于根据确定截止频率的第一数字控制码值改变第一电阻的反馈电阻器，以及用于改变 根据第一数字控制代码值和增益代码值的差值确定的第二数字控制代码值的第二电阻。 增益由第一电阻和第二电阻的比率确定，并根据第一数字控制码值以分贝（dB）为基准线性变化，截止频率与第一电阻成反比，并且在对数线性上变化 可以使用控制代码容易地设置可变增益。

公开(公告)号：US11515843B2

公开(公告)日：2022-11-29

申请号：US17223121

申请日：2021-04-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-Min Kim ,  Jong-Soo Lee ,  Jong-Woo Lee ,  Joong-Ho Lee ,  Ji-Young Lee ,  Pil-Sung Jang ,  Thomas Byunghak Cho ,  Tae-Hwan Jin

IPC: H03F1/26 ,  H03F3/213 ,  H03F1/22 ,  H04B1/16

Abstract: A receiver includes an amplification block supporting carrier aggregation (CA). The amplification block includes a first amplifier circuit configured to receive a radio frequency (RF) input signal at a block node from an outside source, amplify the RF input signal, and output the amplified RF input signal as a first RF output signal. The first amplifier circuit includes a first amplifier configured to receive the RF input signal through a first input node to amplify the RF input signal, and a first feedback circuit coupled between the first input node and a first internal amplification node of the first amplifier to provide feedback to the first amplifier.

公开(公告)号：US10454842B2

公开(公告)日：2019-10-22

申请号：US15274210

申请日：2016-09-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hee-Dong Kim ,  Heui-Sam Kwag ,  Soon-Hyung Gwon ,  Kyoung-Han Park ,  Gye-Young Lee ,  Jong-Woo Lee ,  Dong-Yun Hawng

IPC: G06F13/00 ,  H04L12/911 ,  H04L29/08 ,  H04L12/28

Abstract: A method for issuing an access token of a device by a control point is provided. The method includes transmitting a search request message to the device, receiving, from the device, a search response message including first information indicating a type of the device, requesting access token issuance to the device using first information and second information, the second information including additional information about the device, and receiving the access token from the device. The second information may include model information about the device.

公开(公告)号：US09871492B2

公开(公告)日：2018-01-16

申请号：US14712267

申请日：2015-05-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong-Woo Lee ,  Byung-Hak Cho ,  Jae-Hyun Lim

IPC: H03F3/45 ,  H03F3/183 ,  H03G3/30

CPC classification number: H03F3/183 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45636 ,  H03F2200/21 ,  H03F2200/555 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45686 ,  H03F2203/45702 ,  H03G3/3005

Abstract: An analog amplifier is provided. The analog variable amplifier includes a first amplifier stage configured to amplify a bias current to output a first output voltage and a second output voltage that respectively depend on a magnitude of a first input voltage and a second input voltage, a second amplifier stage configured to receive the first output voltage and the second output voltage of the first amplifier stage as inputs and to amplify the received first output voltage and the second output voltage, and at least one auxiliary bias current source coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the first output voltage, and coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the second output voltage.

公开(公告)号：US09698998B2

公开(公告)日：2017-07-04

申请号：US14104505

申请日：2013-12-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ji-Hyeon Kweon ,  Hyun-Suk Min ,  Kwan-Woo Song ,  Jong-Woo Lee

IPC: H04L12/28

CPC classification number: H04L12/2816 ,  H04L12/2818 ,  H04L12/2834

Abstract: Provided is a method and apparatus for controlling home devices forming a home network at a time by using a mobile terminal in a home network system. In particular, the present disclosure provides a method and apparatus for controlling home devices at a time, depending on a type of contents. A method for playing contents in a Home GateWay (HGW) in a home network system includes receiving from a mobile terminal a control command requesting continuous playback of contents that are currently played in the mobile terminal and controlling at least one home devices in response to the control command.

公开(公告)号：US09093963B2

公开(公告)日：2015-07-28

申请号：US13777599

申请日：2013-02-26

Applicant: Samsung Electronics Co. Ltd.

Inventor： Jong-Woo Lee

IPC: H03F1/34 ,  H03F3/45

CPC classification number: H03F3/45076 ,  H03F1/34 ,  H03F3/45475 ,  H03F2200/405 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03G1/0088 ,  H03G1/0094 ,  H03H11/126 ,  H03H11/1291 ,  H03H2210/025 ,  H03H2210/036

Abstract: An amplifier circuit is provided. The amplifier circuit includes an operational amplifier, a feedback resistor for changing gain and cutoff frequency characteristics of the operational amplifier, and a feedback variable capacitor for changing the cutoff frequency characteristics of the operational amplifier, wherein a capacitance of the feedback variable capacitor increases exponentially according to a digital control code, and the cutoff frequency of the operational amplifier is inversely proportional to the capacitance of the feedback variable capacitor and varies linearly on a logarithmic scale.

Abstract translation: 提供放大器电路。 放大器电路包括运算放大器，用于改变运算放大器的增益和截止频率特性的反馈电阻器，以及用于改变运算放大器的截止频率特性的反馈可变电容器，其中反馈可变电容器的电容按指数增加 数字控制码，运算放大器的截止频率与反馈可变电容器的电容成反比，并以对数刻度线性变化。