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公开(公告)号：US20210408829A1
公开(公告)日：2021-12-30
申请号：US17318129
申请日：2021-05-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ju Ri Lee , Jun Ho Kim
Abstract: Signal power management circuits and smart cards including the same are provided. For example, a signal power management circuit comprises a rectifier that is configured to rectify a received radio frequency signal and output a first rectified voltage, a first regulator that is configured to maintain the first rectified voltage at a predetermined first voltage level, and a second regulator that is configured to receive an output of the first regulator and maintain a second rectified voltage different from the first rectified voltage at a predetermined second voltage level. A signal detector of the signal power management circuit is configured to receive the first rectified voltage and the second rectified voltage and detect a signal component of the received radio frequency signal on the basis of a difference between the first voltage level of the first rectified voltage and the second voltage level of the second rectified voltage.
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公开(公告)号：US20170330905A1
公开(公告)日：2017-11-16
申请号：US15397065
申请日：2017-01-03
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yong Suk Tak , Hong Bum Park , Won Oh Seo , Guk Hyon Yon , Ju Ri Lee
IPC: H01L27/146
CPC classification number: H01L27/1462 , H01L27/14621 , H01L27/14627
Abstract: A pixel array may include an array of microlenses, an array of photodetectors, and an array of color filters. The array of microlenses concentrate incoming light through respective filters in the array of color filters to respective photodetectors in the array of photodetectors. An anti-reflective layer is included between the photodetectors and color filters. The anti-reflective layer includes a first layer having a first index of refraction, a second layer closer to the color filter than the first layer having a second, higher, index of refraction, and a lattice adjusting layer between the first and second layers. The second layer includes a rutile phase TiO2 layer and the lattice adjusting layer includes a crystalline material having a lattice constant similar to that of the rutile phase TiO2 layer.
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公开(公告)号：US11469619B2
公开(公告)日：2022-10-11
申请号：US17318129
申请日：2021-05-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ju Ri Lee , Jun Ho Kim
Abstract: Signal power management circuits and smart cards including the same are provided. For example, a signal power management circuit comprises a rectifier that is configured to rectify a received radio frequency signal and output a first rectified voltage, a first regulator that is configured to maintain the first rectified voltage at a predetermined first voltage level, and a second regulator that is configured to receive an output of the first regulator and maintain a second rectified voltage different from the first rectified voltage at a predetermined second voltage level. A signal detector of the signal power management circuit is configured to receive the first rectified voltage and the second rectified voltage and detect a signal component of the received radio frequency signal on the basis of a difference between the first voltage level of the first rectified voltage and the second voltage level of the second rectified voltage.
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公开(公告)号：US11551048B2
公开(公告)日：2023-01-10
申请号：US17317111
申请日：2021-05-11
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ju Ri Lee , Kyeong Do Kim
IPC: G06K19/07 , G06K19/073 , G05F1/46
Abstract: A smart card with improved power stability is provided. The smart card comprises a rectification signal line through which a rectification signal extracted from a radio frequency (RF) signal is provided; a regulator configured to regulate a voltage of the rectification signal line to a first voltage; a power circuit configured to extract a power component from the rectification signal using an output of the regulator; a logic circuit configured to receive the power component and generate a reception enable signal on the basis of the power component; a demodulator which is enabled by the reception enable signal provided from the logic circuit and configured to extract a signal component from the rectification signal; a capacitor controller which is enabled by the reception enable signal provided from the logic circuit and configured to generate a capacitor enable signal; and a capacitor circuit which is connected to the rectification signal line and has capacitance changed according to the capacitor enable signal.
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