Patents by Inventor Jun Chang

Jun Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11556538
    Abstract: Methods, systems, and computer-readable storage media for receiving, by a current database system, a query plan file representative of a captured query plan from a source database system, receiving, by the current database system, a set of definitions including one or more definitions, each definition in the set of definitions corresponding to an object that is implicated by the query plan, the object being included in a set of objects, and determining, by the current database system, that each definition in the set of definitions is identical to a respective definition of a corresponding object within the current database system, and in response: executing the captured query plan in the current database system to provide a query result.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: January 17, 2023
    Assignee: SAP SE
    Inventors: Youngbin Bok, Jaehyok Chong, Won Jun Chang, Sungguk Lim
  • Publication number: 20230009905
    Abstract: An apparatus for estimating blood glucose is provided. The apparatus for estimating blood glucose may include a spectrometer configured to measure a spectrum from an object, and a processor configured to monitor a change in a contact state between the object and the spectrometer, determine a calibration section based on the monitored change in the contact state, extract a background signal from a spectrum of the determined calibration section, and generate a personalized blood glucose estimation model based on the extracted background signal.
    Type: Application
    Filed: April 20, 2022
    Publication date: January 12, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Ka Ram CHOI, So Young Lee, Ho Jun Chang, Yun S Park, Hyeong Seok Jang
  • Patent number: 11530948
    Abstract: A Raman sensor includes a light source assembly having a plurality of light sources configured to emit light to a plurality of skin points of skin, each of the plurality of skin points having a predetermined separation distance from a light collection region of the skin from which Raman scattered light is collected; a light collector configured to collect the Raman scattered light from the light collection region of the skin; and a detector configured to detect the collected Raman scattered light.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: December 20, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Jun Chang, Sung Hyun Nam, Alexey Anikanov, Yun S Park, Eui Seok Shin, Woochang Lee
  • Publication number: 20220363546
    Abstract: The present disclosure relates to a graphene composite and a method of manufacturing the same, and a graphene composite according to an exemplary embodiment includes: a substrate; a first thin film positioned on the substrate; and a second thin film positioned on the first thin film, in which the first thin film includes graphene, and the second thin film includes at least any one of VSe2, VS2, VTe2, TaS2, TaSe2, NbS2, NbSe2, TiS2, TiSe2, TiTe2, ReS2, and ReSe2.
    Type: Application
    Filed: April 15, 2022
    Publication date: November 17, 2022
    Inventors: Young Jun Chang, Byoung Ki Choi
  • Publication number: 20220305243
    Abstract: The present invention relates to a porous structure-based magnetically actuated microrobot and a fabricating method therefor, wherein the porous structure-based magnetically actuated microrobot is based on a natural polymer having biocompatibility and biodegradability, so that the precise targeting of the porous microrobot through the attachment of magnetic nanoparticles and the drug and cell delivery using the porous microrobot can be attained.
    Type: Application
    Filed: November 9, 2020
    Publication date: September 29, 2022
    Inventors: Jong Oh PARK, Chang Sei KIM, Eun Pyo CHOI, Gwang Jun GO, Hyeong Woo SONG, Yeong Jun CHANG, Ami YOO
  • Patent number: 11439327
    Abstract: An apparatus for measuring a Raman spectrum may include a processor configured to adjust a Raman probe parameter, set a Raman probe with the Raman probe parameter, obtain a first Raman spectrum of the sample at a first time point and a second Raman spectrum of the sample at a second time point, obtain a difference spectrum between the first Raman spectrum and the second Raman spectrum, determine a degree of similarity between the difference spectrum and an analyte Raman spectrum, determine an optimal Raman probe parameter based on the degree of similarity, and obtain a Raman spectrum of the sample for measuring bio-information by setting the Raman probe with the optimal Raman probe parameter.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun S Park, Woo Chang Lee, Ho Jun Chang
  • Publication number: 20220286343
    Abstract: A wireless transceiver having an in-phase quadrature-phase (IQ) calibration function includes a transmitter, a receiver, a signal generator, and a switch circuit. The switch circuit includes a first and a second switch circuits. The first switch circuit is turned on in a receiver-end calibration process, and outputs a predetermined signal from the signal generator to the transmitter. The second switch circuit is turned on in the receiver calibration process and outputs a derivative signal of the predetermined signal from the transmitter to the receiver to let the receiver performs a receiver-end IQ calibration accordingly. The first switch circuit is turned off and the second switch circuit is turned on in a transmitter-end calibration process; the second switch circuit outputs a radio-frequency signal from the transmitter to the receiver to let the receiver generates a calibration reference accordingly; and the transmitter performs a transmitter-end IQ calibration according to the calibration reference.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 8, 2022
    Inventors: KUAN-YU SHIH, CHIA-JUN CHANG
  • Publication number: 20220280078
    Abstract: Provided is an apparatus for estimating a target component, the apparatus including a temperature controller configured to modulate temperature of an object, a measurer configured to measure a spectrum for each temperature of the object that changes based on the modulation, and a processor configured to obtain effective optical pathlength vectors corresponding to a temperature change based on the spectrum for each temperature of the object, obtain a representative effective optical pathlength based on the obtained effective optical pathlength vectors, and obtain a target component estimation model based on the obtained representative effective optical pathlength.
    Type: Application
    Filed: May 13, 2021
    Publication date: September 8, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeong Seok JANG, Sung Hyun NAM, Sung Mo AHN, Jun Ho LEE, Ho Jun CHANG
  • Publication number: 20220265827
    Abstract: This application relates to a magnetically actuatable functional microscaffold for efficient targeted therapy of intractable diseases and a preparation method thereof. The magnetically actuatable functional microscaffold and the preparation method can enable the application of magnetic nanoparticles according to the status of the scaffold and enable various types of targeted therapy in the field of targeted therapy of intractable diseases.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 25, 2022
    Inventors: Yeong Jun CHANG, Bo Bae CHO, Seul Ki LEE
  • Publication number: 20220255717
    Abstract: A communication chip includes an input port, a gain circuit, a correction circuit having a phase-locked loop (PLL) circuit and a return terminal, a post-processing circuit, and a switching circuit. The gain circuit includes an input terminal and a quadrature modulation circuit that operates according to a reference clock. The gain circuit gains a signal from the input terminal according to a bias voltage and outputs a gained signal. The PLL circuit generates a correction signal through synchronization according to the reference clock. The post-processing circuit obtains an input signal strength according to a correction table and a signal from a receiving terminal of the post-processing circuit. The switching circuit couples the correction signal to the input terminal and the gained signal to the return terminal in test mode and couples the input port to the input terminal and the gained signal to the receiving terminal in an operating mode.
    Type: Application
    Filed: October 20, 2021
    Publication date: August 11, 2022
    Applicant: REALTEK SEMICONDUCTOR CORP.
    Inventors: Jon-Jin Chen, Chia-Jun Chang, Ka-Un Chan, Yi-Ching Wu
  • Publication number: 20220202308
    Abstract: A body fat measurement device, disclosed according to the present ion, comprises: at least one electrode unit which supports at least one EIT electrode and is tightly attachable to skin; and a sensor unit which measures electrical impedance tomography information by sensing a signal measured from the electrode unit, wherein, after being connected to the sensor unit and used once, the electrode unit may be separated from the sensor unit and replaced. According to such configuration, the one-time used electrode unit can be replaced from the sensor unit, and thus economic efficiency can be achieved, and convenience of use can be increased.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 30, 2022
    Inventors: Hun WI, Jun CHANG
  • Publication number: 20220173701
    Abstract: An amplifier device includes a regulator circuit, a first voltage converting circuit, a first control circuit, and an amplifier circuit. The regulator circuit is configured to output a first driving voltage. The first voltage converting circuit is coupled to the regulator circuit, and is configured to output one of the first driving voltage and at least one first voltages related to the first driving voltage, as a first operating voltage. The first control circuit is coupled to the first voltage converting circuit through a first node, and is configured to receive the first operating voltage and generate a first operating signal according to the first operating voltage and a first control signal. The amplifier circuit is coupled to the first control circuit and the regulator circuit, and is configured to receive the first driving voltage, and is controlled by the first operating signal to generate an output voltage.
    Type: Application
    Filed: April 19, 2021
    Publication date: June 2, 2022
    Inventors: Yang CHANG, Kuan-Yu SHIH, Chia-Jun CHANG, Ka-Un CHAN
  • Patent number: 11283412
    Abstract: A low noise amplifier circuit includes an input stage circuit, a first output stage circuit, and a second output stage circuit. The input stage circuit is configured to receive an input signal and to generate a bias signal. The first output stage circuit corresponding to a first wireless communication and is configured to be biased according to the bias signal and a first control signal, in order to generate a first output signal, in which the first control signal is for setting a first gain of the first output stage circuit. The second output stage circuit corresponding to a second wireless communication and is configured to be biased according to the bias signal and a second control signal, in order to generate a second output signal, in which the second control signal is for setting a second gain of the second output stage circuit.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: March 22, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chia-Jun Chang, Chia-Yi Lee, Ping-Hsuan Tsai, Ka-Un Chan
  • Publication number: 20220011334
    Abstract: This application relates to a movable apparatus for collecting and analyzing specimens. In one aspect, the movable apparatus includes a transport means configured to be moved independently and to maintain negative pressure therein by a negative pressure module, and a specimen collecting device arranged in the transport means and configured to collect a specimen under remote control by inserting a specimen collecting member into the nasal cavity of a testee who enters the transport means. The apparatus may also include a specimen transport device arranged in the transport means and configured to transport the specimen collecting member under remote control that has collected the specimen in one direction, and a specimen analysis device arranged in the transport means and configured to extract the specimen from the specimen collecting member that has been transported by the specimen transport device under remote control and to analyze the specimen.
    Type: Application
    Filed: July 7, 2021
    Publication date: January 13, 2022
    Inventors: Yeong Jun CHANG, Jung Min LEE
  • Publication number: 20210379799
    Abstract: The present invention relates to a manufacturing device for manufacturing a large amount of micro-scaffolds for a long period of time such that stable and uniform particles can be fabricated. The manufacturing device comprises: a first solution storage portion for storing a polymer support structure solution; a second solution storage portion for storing an emulsifier solution; a gas storage portion connected to each of the first solution storage portion and the second solution storage portion; a pressure control portion for controlling the pressure of the transporting gas flowing into the first solution storage portion and the second solution storage portion from the pressurization portion, respectively; a scaffold injector portion for receiving the polymer support structure solution and the emulsifier solution provided by the transporting gas, respectively; and a scaffold generating portion for receiving the scaffold dispersion discharged through the scaffold injection portion.
    Type: Application
    Filed: March 26, 2019
    Publication date: December 9, 2021
    Inventors: Eun Pyo CHOI, Jong Oh PARK, Chang Sei KIM, Byung Jeon KANG, Seok Jae KIM, Gwang Jun GO, Yeong Jun CHANG
  • Patent number: 11193871
    Abstract: Provided is an apparatus for measuring particulate matter, the apparatus including an air inflow device configured to receive air including particulate matter particles, two or more light sources configured to respectively emit light of different wavelengths to the air received, a pattern measuring device configured to measure scattering patterns for each wavelength of light based on detecting light that is forward-scattered by the particulate matter particles and light that is back-scattered by the particulate matter particles, and a processor configured to obtain a size of the particulate matter particles and a concentration of the particulate matter particles based on the scattering patterns for each wavelength of light.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: December 7, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Jun Chang, Yun S Park, Woo Chang Lee
  • Publication number: 20210357407
    Abstract: Methods, systems, and computer-readable storage media for receiving, by a current database system, a query plan file representative of a captured query plan from a source database system, receiving, by the current database system, a set of definitions including one or more definitions, each definition in the set of definitions corresponding to an object that is implicated by the query plan, the object being included in a set of objects, and determining, by the current database system, that each definition in the set of definitions is identical to a respective definition of a corresponding object within the current database system, and in response: executing the captured query plan in the current database system to provide a query result.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventors: Youngbin Bok, Jaehyok Chong, Won Jun Chang, Sungguk Lim
  • Publication number: 20210302254
    Abstract: The present disclosure provides a transparent pressure sensor including: a first substrate on which a micropattern having pyramidal structures is formed; a first electrode layer coated on the micropattern of the first substrate; a second substrate stacked on the first electrode layer; and a second electrode layer stacked on the second substrate, wherein the first substrate and the second substrate show a difference in light refractive index of 10% or less in the visible light region.
    Type: Application
    Filed: December 2, 2020
    Publication date: September 30, 2021
    Inventors: Steve Park, Han Byul Choi, Jin Won Oh, Jun Chang Yang
  • Publication number: 20210303571
    Abstract: Methods, systems, and computer-readable storage media for receiving a query plan and a set of query parameters of the query plan, the query plan corresponding to a query submitted to a database system, and determining that the set of query parameters matches a filter in a set of filters, each parameter in a set of parameters of the filter matching a query parameter in the set of query parameters, and in response: providing the query plan to an abstract query plan generator that generates an abstract query plan based on the query plan, and storing the abstract query plan in an abstract query plan store.
    Type: Application
    Filed: March 31, 2020
    Publication date: September 30, 2021
    Inventors: Won Jun Chang, Jaehyok Chong, Sungguk Lim, Youngbin Bok
  • Patent number: 11112363
    Abstract: Provided is an apparatus for measuring particulate matter including an image obtaining device configured to charge particulate matter particles included in air that is introduced to the image obtaining device, and to obtain an image of the charged particulate matter particles based on lens-free imaging, a spectrum obtaining device configured to obtain a Raman spectrum of the charged particulate matter particles, and a processor configured to determine a size of the particulate matter particles and a concentration of the particulate matter particles based on the obtained image, and to determine components of the particulate matter particles based on the obtained Raman spectrum.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: September 7, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo Chang Lee, Yun S Park, Ho Jun Chang, Sung Hyun Nam