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公开(公告)号：US10833683B2
公开(公告)日：2020-11-10
申请号：US15984387
申请日：2018-05-20
Inventor： Hyunsun Mo , Dae Jeong Kim
IPC: H03L7/085 , H03L7/107 , H03L7/16 , H03L7/093 , H03L7/08 , H03L7/089 , H03B29/00 , H03C3/09 , H04B15/04
Abstract: A clock generator including a phase frequency detector configured to compare a phase and a frequency of a reference clock signal with a phase and a frequency of a first output clock signal and generate a detection signal based on a difference in the phases and frequencies of the clock signals; a loop filter configured to generate a first control voltage signal based on the detection signal; a first voltage controlled oscillator configured to generate and output a first output clock signal based on the first control voltage signal, a modulation filter configured to generate a modulation voltage signal based on the reference clock signal and generate a second control voltage signal by combining the modulation voltage signal and the first control voltage signal, and a second voltage controlled oscillator configured to generate and output a second output clock signal based on the second control voltage signal is provided.
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Patent Agency Ranking
公开(公告)号：US20200232844A1
公开(公告)日：2020-07-23
申请号：US16525190
申请日：2019-07-29
Inventor： Hyun Sun Mo , Dae Jeong Kim
Abstract: Disclosed is a bio illuminance measuring apparatus including a circadian lambda filter passing external light along according to a circadian rhythm sensitivity curve, a visual lambda filter passing the external light along according to a visual sensitivity curve, a photo sensing portion sensing and converting the external light, which has passed through the circadian lambda filter, into a circadian wavelength signal and sensing and converting the external light, which has passed through the visual lambda filter, into a visual wavelength signal, and an illuminance calculating portion which calculates a ratio between the circadian wavelength signal and the visual wavelength signal, calculates a circadian action factor by applying the ratio between the circadian wavelength signal and the visual wavelength signal to a circadian action function which varies according to the visual wavelength signal, and calculates a bio illuminance value of the external light on the basis of the circadian action factor.
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公开(公告)号：US11326938B2
公开(公告)日：2022-05-10
申请号：US16525190
申请日：2019-07-29
Inventor： Hyun Sun Mo , Dae Jeong Kim
Abstract: Disclosed is a bio illuminance measuring apparatus including a circadian lambda filter passing external light along according to a circadian rhythm sensitivity curve, a visual lambda filter passing the external light along according to a visual sensitivity curve, a photo sensing portion sensing and converting the external light, which has passed through the circadian lambda filter, into a circadian wavelength signal and sensing and converting the external light, which has passed through the visual lambda filter, into a visual wavelength signal, and an illuminance calculating portion which calculates a ratio between the circadian wavelength signal and the visual wavelength signal, calculates a circadian action factor by applying the ratio between the circadian wavelength signal and the visual wavelength signal to a circadian action function which varies according to the visual wavelength signal, and calculates a bio illuminance value of the external light on the basis of the circadian action factor.
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公开(公告)号：US20200230346A1
公开(公告)日：2020-07-23
申请号：US16525183
申请日：2019-07-29
Inventor： Hyun Sun Mo , Young Rag Do , Dae Jeong Kim , Dae Hwan Kim , Sung Yeon Jang , In Hwan Jung , Dong Myung Kim , Seong Jin Choi , Sanggyu Yim , Hyung Min Kim , Sun Woong Choi , Gu Min Jeong , Seung Min Lee
IPC: A61M21/02
Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.
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公开(公告)号：US11305091B2
公开(公告)日：2022-04-19
申请号：US16525183
申请日：2019-07-29
Inventor： Hyun Sun Mo , Young Rag Do , Dae Jeong Kim , Dae Hwan Kim , Sung Yeon Jang , In Hwan Jung , Dong Myung Kim , Seong Jin Choi , Sanggyu Yim , Hyung Min Kim , Sun Woong Choi , Gu Min Jeong , Seung Min Lee
Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.
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公开(公告)号：US20190058479A1
公开(公告)日：2019-02-21
申请号：US15984387
申请日：2018-05-20
Inventor： Hyunsun Mo , Dae Jeong Kim
Abstract: A clock generator including a phase frequency detector configured to compare a phase and a frequency of a reference clock signal with a phase and a frequency of a first output clock signal and generate a detection signal based on a difference in the phases and frequencies of the clock signals; a loop filter configured to generate a first control voltage signal based on the detection signal; a first voltage controlled oscillator configured to generate and output a first output clock signal based on the first control voltage signal, a modulation filter configured to generate a modulation voltage signal based on the reference clock signal and generate a second control voltage signal by combining the modulation voltage signal and the first control voltage signal, and a second voltage controlled oscillator configured to generate and output a second output clock signal based on the second control voltage signal is provided.
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