Patents by Inventor Jung Hwa Bae
Jung Hwa Bae 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: 20210338364Abstract: Fiber Bragg grating (FBG) sensors are used to provide measurement of chordae tendineae forces. Two basic modes of operation are considered, The first mode is a research mode, where the FBG sensors are affixed to native chordae in situ and preferably in vivo to provide data on chordae forces in a beating heart under various conditions (e.g., normal, hypertensive, etc.), The second mode is a clinical mode, where the FBG sensor can be used to measure tension on a prosthetic neochord during the surgical procedure to implant the prosthesis.Type: ApplicationFiled: August 28, 2019Publication date: November 4, 2021Inventors: Michael John Paulsen, Y. Joseph WOO, Mark R. Cutkosky, Jung Hwa Bae, Annabel M. Imbrie-Moore
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Patent number: 10933808Abstract: A haptic feedback device for a vehicle is provided that has a ring member disposed circumferentially on the steering wheel as the moving element. This allows the system to be used with a wide variety of driver hand positions on the steering wheel, as opposed to requiring the driver to grip the steering wheel only in specific locations. A linear actuator is used, and accommodating the difference between the linear actuator motion and the rotational motion of the ring member is done via elastic compliance in the system (as opposed to providing pivots, rotary joints etc.). Such elastic compliance can only accommodate a limited range of angular motion (e.g., +/?1 degree), but this small range of motion has been found to be sufficient for this haptic display application.Type: GrantFiled: September 8, 2017Date of Patent: March 2, 2021Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Christopher J. Ploch, Jung Hwa Bae, Mark R. Cutkosky
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Patent number: 10582457Abstract: A method of controlling transmission power used for wireless transmission in a wireless communication device including calculating a remaining power level of a third period based on a tolerant power level of a first period and a remaining power level of a second period, the third period included in the first period and being a period from a current time to a point in time following the current time, the second period being a period from the current time to a point in time preceding the current time, calculating a transmission power level of the third period based on a target power level and the remaining power level of the third period, and generating a power control signal for determining a power level of a transmission signal unit based on the transmission power level of the third period may be provided.Type: GrantFiled: February 25, 2019Date of Patent: March 3, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-han Kim, Joo-hyun Do, Jung-hwa Bae, Min-goo Kim
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Publication number: 20190210523Abstract: A haptic feedback device for a vehicle is provided that has a ring member disposed circumferentially on the steering wheel as the moving element. This allows the system to be used with a wide variety of driver hand positions on the steering wheel, as opposed to requiring the driver to grip the steering wheel only in specific locations. A linear actuator is used, and accommodating the difference between the linear actuator motion and the rotational motion of the ring member is done via elastic compliance in the system (as opposed to providing pivots, rotary joints etc.). Such elastic compliance can only accommodate a limited range of angular motion (e.g., +/?1 degree), but this small range of motion has been found to be sufficient for this haptic display application.Type: ApplicationFiled: September 8, 2017Publication date: July 11, 2019Inventors: Christopher J. Ploch, Jung Hwa Bae, Mark R. Cutkosky
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Publication number: 20190191393Abstract: A method of controlling transmission power used for wireless transmission in a wireless communication device including calculating a remaining power level of a third period based on a tolerant power level of a first period and a remaining power level of a second period, the third period included in the first period and being a period from a current time to a point in time following the current time, the second period being a period from the current time to a point in time preceding the current time, calculating a transmission power level of the third period based on a target power level and the remaining power level of the third period, and generating a power control signal for determining a power level of a transmission signal unit based on the transmission power level of the third period may be provided.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Joo-han KIM, Joo-hyun DO, Jung-hwa BAE, Min-goo KIM
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Patent number: 10251137Abstract: A method of controlling transmission power used for wireless transmission in a wireless communication device including calculating a remaining power level of a third period based on a tolerant power level of a first period and a remaining power level of a second period, the third period included in the first period and being a period from a current time to a point in time following the current time, the second period being a period from the current time to a point in time preceding the current time, calculating a transmission power level of the third period based on a target power level and the remaining power level of the third period, and generating a power control signal for determining a power level of a transmission signal unit based on the transmission power level of the third period may be provided.Type: GrantFiled: May 24, 2017Date of Patent: April 2, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-han Kim, Joo-hyun Do, Jung-hwa Bae, Min-goo Kim
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Publication number: 20180116732Abstract: A method of real-time 3D flexible needle tracking for image-guided surgery is provided that includes uploading, using a controller, a virtual model of a flexible needle to a calibrated 3D mixed reality headset, where the virtual model, establishing an initial position of a base of a flexible needle relative to a target under test, using the controller and the flexible needle, where the flexible needle includes sensors spanning from the base to along a length of the flexible needle, where the sensors communicate a position, a shape, and an orientation of the flexible needle to the controller, where the controller communicates the sensor positions to the calibrated 3D mixed-reality headset, and using the calibrated 3D mixed-reality headset to display in real-time a position and shape of the flexible needle relative to the target under test.Type: ApplicationFiled: October 18, 2017Publication date: May 3, 2018Inventors: Michael A. Lin, Jung Hwa Bae, Subashini Srinivasan, Mark R. Cutkosky, Brian A. Hargreaves, Bruce L. Daniel
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Publication number: 20180020413Abstract: A method of controlling transmission power used for wireless transmission in a wireless communication device including calculating a remaining power level of a third period based on a tolerant power level of a first period and a remaining power level of a second period, the third period included in the first period and being a period from a current time to a point in time following the current time, the second period being a period from the current time to a point in time preceding the current time, calculating a transmission power level of the third period based on a target power level and the remaining power level of the third period, and generating a power control signal for determining a power level of a transmission signal unit based on the transmission power level of the third period may be provided.Type: ApplicationFiled: May 24, 2017Publication date: January 18, 2018Applicant: Samsung Electronics Co., Ltd.Inventors: Joo-han Kim, Joo-hyun Do, Jung-hwa Bae, Min-goo Kim
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Patent number: 9479272Abstract: Disclosed are a method and apparatus for processing a transmission signal using a window function that changes a spectrum characteristic of a symbol. A transmission apparatus includes a symbol generator that generate a plurality of consecutive symbols, and a symbol windowing processor that is coupled with the symbol generator. The symbol windowing processor applies a first window function and a third window function that uses a difference between the first window and a second window, and changes a spectrum characteristic of each of the plurality of consecutive symbols, and processes neighboring symbols from among the plurality of consecutive symbols of which spectrum characteristics are changed, such that the symbols partially overlap one another.Type: GrantFiled: May 14, 2015Date of Patent: October 25, 2016Assignee: Samsung Electronics Co., LtdInventors: Jung-Hwa Bae, In-Tae Kang, Hae-Dong Yeon
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Publication number: 20160008026Abstract: Various aspects as described herein are directed to methods and systems that include a tissue-engagement apparatus. The tissue-engagement apparatus includes a distal needle portion having a sharp-end region to be applied to a tissue surface. The tissue-engagement apparatus also includes a proximate needle portion to attach to a needle base, and an elongated needle portion, situated between the distal needle portion. The elongated needle portion includes a plurality of openings that accentuate haptic-type forces carried by the elongated needle portion in response to engagement between the sharp-end region and the tissue surface. Additionally, the proximate needle portion includes a communication pathway that conveys information, from the distal needle portion along the elongated needle portion, which characterizes forces due to the engagement between the sharp-end region and the tissue surface.Type: ApplicationFiled: March 4, 2014Publication date: January 14, 2016Inventors: Santhi Elayaperumal, Jung Hwa Bae, Bruce L. Daniel, Mark R. Cutkosky
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Publication number: 20150333944Abstract: Disclosed are a method and apparatus for processing a transmission signal using a window function that changes a spectrum characteristic of a symbol. A transmission apparatus includes a symbol generator that generate a plurality of consecutive symbols, and a symbol windowing processor that is coupled with the symbol generator. The symbol windowing processor applies a first window function and a third window function that uses a difference between the first window and a second window, and changes a spectrum characteristic of each of the plurality of consecutive symbols, and processes neighboring symbols from among the plurality of consecutive symbols of which spectrum characteristics are changed, such that the symbols partially overlap one another.Type: ApplicationFiled: May 14, 2015Publication date: November 19, 2015Inventors: Jung-Hwa BAE, In-Tae KANG, Hae-Dong YEON
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Patent number: 8548092Abstract: A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal.Type: GrantFiled: January 11, 2011Date of Patent: October 1, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: In-Tae Kang, Jung-Hwa Bae, Jung-Uk Woo, Shin-Ho Kim, Sang-Min Bae, Jong-Han Lim, Dong-Min Kim, Bo-Rham Lee
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Patent number: 8509079Abstract: A method and apparatus for transmitting a signal whereby it is determined if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, an input signal to be transmitted Q times in a time domain when the Q is an integer is expanded, a Single Carrier Frequency Division Multiplexing Access (SC-FDMA) signal is generated, and the SC-FDMA signal is transmitted.Type: GrantFiled: June 8, 2010Date of Patent: August 13, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: In-Tae Kang, Jung-Hwa Bae, Bo-Rham Lee, Sang-Min Bae, Jong-Han Lim
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Patent number: 8467479Abstract: Provided are an apparatus and a method for estimating I/Q unbalance parameters in an OFDM receiver. The apparatus includes an unbalance parameter estimator and an I/Q unbalance compensator. The unbalance parameter estimator estimates an amplitude difference and a phase difference depending on positions of pilot tones in a preamble of a received signal. The I/Q unbalance compensator compensates for an I/Q unbalance using the amplitude difference and the phase difference estimated by the unbalance parameter estimator.Type: GrantFiled: February 19, 2009Date of Patent: June 18, 2013Assignee: Samsung Electronics Co., LtdInventors: Jung-Hwa Bae, Sang-Min Bae
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Publication number: 20110182339Abstract: A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal.Type: ApplicationFiled: January 11, 2011Publication date: July 28, 2011Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: In-Tae KANG, Jung-Hwa BAE, Jung-Uk WOO, Shin-Ho KIM, Sang-Min BAE, Jong-Han LIM, Dong-Min KIM, Bo-Rham LEE
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Publication number: 20100329394Abstract: Provided are an apparatus and a method for estimating I/Q unbalance parameters in an OFDM receiver. The apparatus includes an unbalance parameter estimator and an I/Q unbalance compensator. The unbalance parameter estimator estimates an amplitude difference and a phase difference depending on positions of pilot tones in a preamble of a received signal. The I/Q unbalance compensator compensates for an I/Q unbalance using the amplitude difference and the phase difference estimated by the unbalance parameter estimator.Type: ApplicationFiled: February 19, 2009Publication date: December 30, 2010Inventors: Jung-Hwa Bae, Sang-Min Bae
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Publication number: 20100322065Abstract: A method and apparatus for transmitting a signal in a Single Carrier-Frequency Division Multiplexing Access (SC-FDMA) communication system are provided. The method includes determining if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, expanding an input signal to be transmitted Q times in a time domain when the Q is an integer, generating an SC-FDMA signal, and transmitting the SC-FDMA signal.Type: ApplicationFiled: June 8, 2010Publication date: December 23, 2010Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: In-Tae KANG, Jung-Hwa BAE, Bo-Rham LEE, Sang-Min BAE, Jong-Han LIM
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Patent number: 7334424Abstract: Disclosed herein is an air conditioner having independent cooling and purifying paths. The air conditioner comprises a body casing formed by assembling a front panel with a rear panel, the front panel having a cooled air discharge opening and one or more suction openings to introduce indoor air into the body casing, a first fan arranged in the body casing to suction air via the suction openings, and a heat exchanger located above the first fan to perform heat exchange of the suctioned air. A cooler housing is arranged in the body casing to receive the first fan therein. Also, an air purifier is mounted in the body casing.Type: GrantFiled: October 19, 2005Date of Patent: February 26, 2008Assignee: WiniaMando Inc.Inventors: Jun Hyung Park, Jung Hwa Bae, Kwang Oh Moon, Hyoung Bok Jung