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公开(公告)号：US20230206020A1
公开(公告)日：2023-06-29
申请号：US18111014
申请日：2023-02-17
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyeongdo KIM , Sanghyo LEE , Seungwon LEE , Jongpil CHO
IPC: G06K19/077 , G06K19/07 , H02M1/08
CPC classification number: G06K19/07773 , G06K19/0715 , H02M1/08 , H02M3/156
Abstract: A smart card includes an antenna to transmit and to receive a radio frequency signal, a rectifier to rectify a signal received through the antenna to output a rectified voltage, a voltage regulator to operate in a first operation mode for stabilizing a level of the rectified voltage and a second operation mode for generating an internal voltage using the rectified voltage, a regulator converter to control the voltage regulator to operate the voltage regulator in one of the first operation and the second operation according to a mode selection signal, a clamp circuit to connect an output terminal of the rectifier to a ground according to the mode selection signal, a load modulator to vary a resistance of the antenna to perform a load modulation, and a regulator controller to generate the mode selection signal according to whether the load modulator is activated or deactivated.
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公开(公告)号：US20190213459A1
公开(公告)日：2019-07-11
申请号：US16233886
申请日：2018-12-27
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyeongdo KIM , Sanghyo LEE , Seungwon LEE , Jongpil CHO
IPC: G06K19/077 , H02M3/156 , H02M1/08 , G06K19/07
CPC classification number: G06K19/07773 , G06K19/0715 , H02M1/08 , H02M3/156 , H02M7/06 , H02M2001/0045
Abstract: A smart card includes an antenna to transmit and to receive a radio frequency signal, a rectifier to rectify a signal received through the antenna to output a rectified voltage, a voltage regulator to operate in a first operation mode for stabilizing a level of the rectified voltage and a second operation mode for generating an internal voltage using the rectified voltage, a regulator converter to control the voltage regulator to operate the voltage regulator in one of the first operation and the second operation according to a mode selection signal, a clamp circuit to connect an output terminal of the rectifier to a ground according to the mode selection signal, a load modulator to vary a resistance of the antenna to perform a load modulation, and a regulator controller to generate the mode selection signal according to whether the load modulator is activated or deactivated.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20210203382A1
公开(公告)日：2021-07-01
申请号：US16991666
申请日：2020-08-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Youngseok KIM , Sanghyo LEE
IPC: H04B5/00
Abstract: A near field communication (NFC) device includes a resonator including an antenna and a matching circuit, a transmitter and a frequency detector. The transmitter generates a sensing voltage signal at the resonator. With respect to a plurality of measurement periods where each measurement period includes a turn-on period and a turn-off period, the transmitter is enabled to output a radio frequency (RF) signal to the resonator during the turn-on period and disabled during the turn-off period. The frequency detector detects a resonance frequency of the resonator based on the sensing voltage signal. The resonance frequency is accurately detected by measuring the resonance frequency during the plurality of measurement periods. In addition, the resonance frequency is efficiently detected by generating the sensing voltage signal using the transmitter established in the NFC device.
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公开(公告)号：US20140035728A1
公开(公告)日：2014-02-06
申请号：US13955088
申请日：2013-07-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sanghyo LEE , Iljong SONG
IPC: G06K7/10
CPC classification number: G06K7/10198 , G06K7/10158 , G06K7/10217
Abstract: An RFID reader for communication with an RFID tag includes an RF unit configured to communicate with the RFID tag according to an operating period of the RFID reader. The operating period includes a first period in which the RF unit communicates with the RFID tag, and the operating period includes a second period in which the RF unit does not communicate with the RFID tag. The RFID reader includes a microcontroller unit configured to control a quality factor of the RF unit according to a change in the operating period. The RFID reader includes a power supply configured to supply power to the RF unit and the microcontroller unit.
Abstract translation: 用于与RFID标签通信的RFID读取器包括被配置为根据RFID读取器的操作周期与RFID标签通信的RF单元。 操作周期包括RF单元与RFID标签通信的第一周期，并且操作周期包括RF单元不与RFID标签通信的第二周期。 RFID读取器包括被配置为根据操作周期的变化来控制RF单元的品质因数的微控制器单元。 RFID读取器包括被配置为向RF单元和微控制器单元供电的电源。
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公开(公告)号：US20240330613A1
公开(公告)日：2024-10-03
申请号：US18370118
申请日：2023-09-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Minhyeok KANG , Sanghyo LEE
CPC classification number: G06K7/0166 , G06K7/0008
Abstract: The present disclosure provides systems and devices including reception circuits for communications between smart cards and card readers. In some embodiments, a reception circuit of a smart card includes a first circuit and a second circuit. The first circuit is configured to receive a wireless signal including a pause, and restore the wireless signal to a clock signal. The second circuit is configured to charge a voltage of a first node based on a first logic level of the clock signal, compare the voltage of the first node with a predefined reference voltage, and output, based on the comparison of the voltage of the first node, a synchronization signal indicating a rising starting time point of the pause of the wireless signal.
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公开(公告)号：US20220376734A1
公开(公告)日：2022-11-24
申请号：US17708408
申请日：2022-03-30
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Minchul KANG , Sanghyo LEE , Kyeongdo KIM , Inhyuk KIM
Abstract: A communication device is provided. The communication device includes: an antenna; a matching circuit connected with the antenna; a transmitter configured to generate a transmission communication signal and provide the transmission communication signal to the antenna through the matching circuit; a filter connected between the matching circuit and the antenna; and a receiver configured to receive an attenuated signal from the antenna through the filter. The filter is configured to pass frequencies of an antenna signal corresponding to a pass band and attenuate frequencies of the antenna signal corresponding to a stop band, and a center frequency of the transmission communication signal corresponds to the stop band of the filter.
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公开(公告)号：US20210334618A1
公开(公告)日：2021-10-28
申请号：US17366908
申请日：2021-07-02
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyeongdo KIM , Sanghyo LEE , Seungwon LEE , Jongpil CHO
IPC: G06K19/077 , G06K19/07 , H02M1/08
Abstract: A smart card includes an antenna to transmit and to receive a radio frequency signal, a rectifier to rectify a signal received through the antenna to output a rectified voltage, a voltage regulator to operate in a first operation mode for stabilizing a level of the rectified voltage and a second operation mode for generating an internal voltage using the rectified voltage, a regulator converter to control the voltage regulator to operate the voltage regulator in one of the first operation and the second operation according to a mode selection signal, a clamp circuit to connect an output terminal of the rectifier to a ground according to the mode selection signal, a load modulator to vary a resistance of the antenna to perform a load modulation, and a regulator controller to generate the mode selection signal according to whether the load modulator is activated or deactivated.
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