Patents by Inventor Sung-Jae Kwon
Sung-Jae Kwon 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).
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Publication number: 20240145935Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Byung Chul PARK, Seung Ho KIM, Kun Sup KWON, Jong Wan HEO, Sung Jae LEE, Ki Min HWANG
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Patent number: 11932618Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.Type: GrantFiled: March 13, 2023Date of Patent: March 19, 2024Assignee: ILDONG PHARMACEUTICAL CO., LTD.Inventors: Hong Chul Yoon, Kyung Mi An, Myong Jae Lee, Jin Hee Lee, Jeong-geun Kim, A-rang Im, Woo Jin Jeon, Jin Ah Jeong, Jaeho Heo, Changhee Hong, Kyeojin Kim, Jung-Eun Park, Te-ik Sohn, Changmok Oh, Da Hae Hong, Sung Wook Kwon, Jung Ho Kim, Jae Eui Shin, Yeongran Yoo, Min Whan Chang, Eun Hye Jang, In-gyu Je, Ji Hye Choi, Gunhee Kim, Yearin Jun
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Publication number: 20170307725Abstract: According to the present invention, a method for reducing a sidelobe in an ultrasound image includes Step 1 of receiving, from individual receiving elements of an array transducer, ultrasonic signals reflected from an imaging point, and outputting the ultrasonic signals as channel signals of the corresponding receiving elements; Step 2 of applying focusing delays to each of the channel signals to temporally align the channel signals; and Step 3 of synthesizing an ultrasound image by using an added-up signal which is obtained by adding up the temporally aligned channel signals, wherein Step 3 includes calculating a magnitude of a corresponding sidelobe signal by using a spatial frequency of the sidelobe signal which generates a sidelobe and the number of receiving elements and synthesizing the ultrasound image by subtracting the calculated magnitude of the sidelobe signal from the added-up signal.Type: ApplicationFiled: January 8, 2015Publication date: October 26, 2017Applicants: WAYGENCE CO., LTD, Daejin University Center for Educational Industrial CooperationInventors: Mok Kun JEONG, Sung Jae KWON
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Publication number: 20170052250Abstract: According to the present invention, ultrasonic image quality can be improved by removing side lobe signals using a nonlinear filter that subtracts the side lobe signals calculated from a summed signal resulting from the received channel signals obtained by focusing signals received via an array transducer having a plurality of receiving elements and uses the calculated magnitude of the side lobe signals as a filter coefficient.Type: ApplicationFiled: April 19, 2016Publication date: February 23, 2017Applicants: WAYGENCE CO., LTD, Daejin University Center for Educational Industrial CooperationInventors: Mok Kun JEONG, Sung Jae KWON
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Patent number: 9149256Abstract: Embodiments for forming a strain image by compensating for displacement in a later direction in an ultrasound system are disclosed. In one embodiment, an ultrasound system includes: an ultrasound data acquisition unit configured to acquire first ultrasound data where compression is not applied to a target object and second ultrasound data where compression is applied to the target object; and a processing unit configured to compensate for displacements in axial and lateral directions in the second ultrasound data based on the first ultrasound data and second ultrasound data, the processing unit being further configured to form a strain image based on the first ultrasound data and the axial and lateral displacement compensated second ultrasound data.Type: GrantFiled: June 3, 2011Date of Patent: October 6, 2015Assignee: SAMSUNG MEDISON CO., LTD.Inventors: Mok Kun Jeong, Sung Jae Kwon, Dong Kuk Shin
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Patent number: 8357096Abstract: The present invention relates to an ultrasound system and a method of forming a Doppler mode image. The ultrasound system comprises a transmission/reception unit operable to transmit/receive ultrasound signals at a pulse repetition frequency (PRF) to form an n number of Doppler signals. The ultrasound system further comprises a signal processing unit. The signal processing unit computes a first mean frequency based on an nth Doppler signal and an (n?1)th Doppler signal and a second mean frequency based on an nth Doppler signal and an (n?k)th Doppler signal, wherein k is a positive integer equal to or greater than 2. The signal processing unit estimates a Doppler frequency and compensate for aliasing of the Doppler signal based on the first and second mean frequencies to produce Doppler signal with the aliasing compensated. An image processing unit operable to form a Doppler mode image based on the Doppler signals produced by the signal processing unit.Type: GrantFiled: January 9, 2009Date of Patent: January 22, 2013Assignee: Medison Co., Ltd.Inventors: Mok Kun Jeong, Sung Jae Kwon
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Publication number: 20120083694Abstract: Embodiments for forming an elastic image in an ultrasound system are disclosed. In one embodiment, a processing unit is configured to control an ultrasound data acquisition unit to perform the transmit/receive operation in a first state where compression is not applied to the target object to thereby obtain a first ultrasound frame data set, and to perform the transmit/receive operation in a second state where compression is applied to the target object to thereby obtain a second ultrasound frame data set. The processing unit is further configured to compute a first strain between the first and second ultrasound frame data sets, perform globally uniform stretching upon the second ultrasound frame data set based on the first strain, and compute a second strain between the first ultrasound frame data set and the stretched second ultrasound frame data set and form an elastic image based on the second strain.Type: ApplicationFiled: March 30, 2011Publication date: April 5, 2012Inventors: Mok Kun JEONG, Sang Shik Park, Sung Jae Kwon
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Publication number: 20120065505Abstract: Embodiments for forming a strain image by compensating for displacement in a later direction in an ultrasound system are disclosed. In one embodiment, an ultrasound system includes: an ultrasound data acquisition unit configured to acquire first ultrasound data where compression is not applied to a target object and second ultrasound data where compression is applied to the target object; and a processing unit configured to compensate for displacements in axial and lateral directions in the second ultrasound data based on the first ultrasound data and second ultrasound data, the processing unit being further configured to form a strain image based on the first ultrasound data and the axial and lateral displacement compensated second ultrasound data.Type: ApplicationFiled: June 3, 2011Publication date: March 15, 2012Inventors: Mok Kun JEONG, Sung Jae Kwon, Dong Kuk Shin
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Patent number: 8012093Abstract: There is provided an ultrasound system for forming strain images by decreasing decorrelation of receive signals, which vary with time or space. More specifically, the decorrelation between the receive signals obtained without and with applying stress to a target object is reduced to decrease an error, which occurs during the calculation of a delay. Also, a center frequency, which varies with depth of a target object, is compensated to form the strain image.Type: GrantFiled: June 30, 2009Date of Patent: September 6, 2011Assignee: Medison Co., Ltd.Inventors: Ra Young Yoon, Sung Jae Kwon, Moo Ho Bae, Mok Kun Jeong
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Patent number: 7836766Abstract: The present invention relates to a method of acquiring an ultrasound image in an ultrasound imaging system having an array transducer, comprising: a) setting an image point at a predetermined depth on an ultrasound image acquired based on a reference speed of sound for a target object; b) setting a range of speed of sound with reference to the reference speed; c) setting a plurality of speeds of sound in a predetermined interval within the range of speed of sound; d) acquiring ultrasound images at each speed of sound; e) calculating an amplitude of an image point set at a predetermined depth of each ultrasound image; f) determining a real speed of sound in the target object based on the calculated amplitude; and g) acquiring an ultrasound image based on the determined real speed of sound in the target object.Type: GrantFiled: December 27, 2006Date of Patent: November 23, 2010Assignee: Medison Co., Ltd.Inventors: Mok Keun Jeong, Sung Jae Kwon, Ra Young Yoon
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Publication number: 20090318811Abstract: There is provided an ultrasound system for forming strain images by decreasing decorrelation of receive signals, which vary with time or space. More specifically, the decorrelation between the receive signals obtained without and with applying stress to a target object is reduced to decrease an error, which occurs during the calculation of a delay. Also, a center frequency, which varies with depth of a target object, is compensated to form the strain image.Type: ApplicationFiled: June 30, 2009Publication date: December 24, 2009Applicant: Medison Co., Ltd.Inventors: Ra Young Yoon, Sung Jae Kwon, Moo Ho Bae, Mok Kun Jeong
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Publication number: 20090182236Abstract: The present invention relates to an ultrasound system and a method of forming a Doppler mode image. The ultrasound system comprises a transmission/reception unit operable to transmit/receive ultrasound signals at a pulse repetition frequency (PRF) to form an n number of Doppler signals. The ultrasound system further comprises a signal processing unit. The signal processing unit computes a first mean frequency based on an nth Doppler signal and an (n?1)th Doppler signal and a second mean frequency based on an nth Doppler signal and an (n?k)th Doppler signal, wherein k is a positive integer equal to or greater than 2. The signal processing unit estimates a Doppler frequency and compensate for aliasing of the Doppler signal based on the first and second mean frequencies to produce Doppler signal with the aliasing compensated. An image processing unit operable to form a Doppler mode image based on the Doppler signals produced by the signal processing unit.Type: ApplicationFiled: January 9, 2009Publication date: July 16, 2009Inventors: Mok Kun Jeong, Sung Jae Kwon
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Publication number: 20090131797Abstract: The present invention relates to an ultrasound diagnostic device. The ultrasound diagnostic device comprises a pair of transducers operable to transmit/receive ultrasound signals. The transducers are arranged to face each other. The transducers may be an array transducer including a plurality of elements, which are linearly arranged.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Inventors: Mok Kun Jeong, Yung Gil Kim, Sung Jae Kwon, Ra Young Yoon
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Publication number: 20090003128Abstract: The present invention relates to a method of acquiring an ultrasound image in an ultrasound imaging system having an array transducer, comprising: a) setting an image point at a predetermined depth on an ultrasound image acquired based on a reference speed of sound for a target object; b) setting a range of speed of sound with reference to the reference speed; c) setting a plurality of speeds of sound in a predetermined interval within the range of speed of sound; d) acquiring ultrasound images at each speed of sound; e) calculating an amplitude of an image point set at a predetermined depth of each ultrasound image; f) determining a real speed of sound in the target object based on the calculated amplitude; and g) acquiring an ultrasound image based on the determined real speed of sound in the target object.Type: ApplicationFiled: December 27, 2006Publication date: January 1, 2009Inventors: Mok Keun Jeong, Sung Jae Kwon, Ra Young Yoon
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Publication number: 20070197915Abstract: There is provided an ultrasound diagnostic system, which includes: a unit for forming transmit signals, wherein waveforms of the transmit signals vary depending on whether or not a stress is applied to a target object; a probe for converting the transmit signals into ultrasound signals and forming receive signals based on ultrasound echo signals reflected from the target object in the presence and absence of the stress; a processor for computing a displacement and a strain of the target object due to the stress based on the receive signals; and a post-processing unit for forming an ultrasound elastic image based on the strain.Type: ApplicationFiled: January 24, 2007Publication date: August 23, 2007Applicant: Medison Co., Ltd.Inventors: Mok Kun JEONG, Sung Jae Kwon, Ra Young Yoon
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Patent number: 6913574Abstract: A method and apparatus for measuring the elastic characteristics of a medium by estimating variations in the speckle patterns in ultrasound images. The method for measuring the elastic characteristics of a medium comprises the steps of applying vibrations to the medium; acquiring a plurality of ultrasound image frames of the medium; estimating a variation in brightness of the speckle pattern over the plurality of ultrasound image frames; and measuring the elastic characteristics of the medium based on the estimated brightness variation. The apparatus for measuring the elastic characteristics of a medium comprises a vibrator for applying vibrations to the medium; transducers for acquiring a plurality of ultrasound image frames of the medium; a device for estimating a variation in brightness of a speckle pattern over the plurality of ultrasound image frames; and a device for measuring the elastic characteristics of the medium based on the estimated brightness vibration.Type: GrantFiled: July 3, 2003Date of Patent: July 5, 2005Assignee: Madison Co., Ltd.Inventors: Mok-Kun Jeong, Sung-Jae Kwon
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Publication number: 20040006270Abstract: A method and apparatus for measuring the elastic characteristics of a medium by estimating variations in the speckle patterns in ultrasound images. The method for measuring the elastic characteristics of a medium comprises the steps of applying vibrations to the medium; acquiring a plurality of ultrasound image frames of the medium; estimating a variation in brightness of the speckle pattern over the plurality of ultrasound image frames; and measuring the elastic characteristics of the medium based on the estimated brightness variation. The apparatus for measuring the elastic characteristics of a medium comprises a vibrator for applying vibrations to the medium; transducers for acquiring a plurality of ultrasound image frames of the medium; a device for estimating a variation in brightness of a speckle pattern over the plurality of ultrasound image frames; and a device for measuring the elastic characteristics of the medium based on the estimated brightness vibration.Type: ApplicationFiled: July 3, 2003Publication date: January 8, 2004Applicant: Medison Co., Ltd.,Inventors: Mok-Kun Jeong, Sung-Jae Kwon