Patents by Inventor Myeong-Cheol Shin
Myeong-Cheol Shin 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: 20240075953Abstract: A method for driving in a blind spot of a sensor mounted on an autonomous vehicle is provided. The method includes steps of: a computing device of the autonomous vehicle running on a specific road locating the autonomous vehicle from precision map information, sensor information and GPS information, and in response to determining that the autonomous vehicle is expected to encounter a specific event, transmitting vehicle location data, travelling direction data, vehicle structure data and sensor location data and sensor's viewing angle data to the server, to determine whether a region of interest corresponding to the specific event is included in blind spot candidates; receiving blind spot stereoscopic data, computed from the data received from the autonomous vehicle and 3D occlusion environmental data corresponding to occluding static objects in the blind spot candidates, from the server; and controlling movement of the autonomous vehicle based on the blind spot stereoscopic data.Type: ApplicationFiled: October 10, 2022Publication date: March 7, 2024Applicant: Autonomous A2ZInventors: Ki Cheol SHIN, Myeong Seon HEO, Byung Yong YOU, Ji Hyeong HAN
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Patent number: 11755930Abstract: A method and apparatus for controlling learning of a model for estimating an intention of an input utterance is disclosed. A method of controlling learning of a model for estimating an intention of an input utterance among a plurality of intentions includes providing a first index corresponding to the number of registered utterances for each intention, providing a second index corresponding to a learning level for each intention, providing a learning target setting interface such that at least one intention that is to be a learning target is selected from among the intentions based on the first index and the second index, and training the model based on the registered utterances for each intention and setting of the learning target for each intention.Type: GrantFiled: May 13, 2020Date of Patent: September 12, 2023Assignee: KAKAO CORP.Inventors: Seung Won Seo, Tae Uk Kim, Il Nam Park, Myeong Cheol Shin, Hye Ryeon Lee, Sung Eun Choi
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Patent number: 11080323Abstract: Disclosed is a search method and apparatus. A search service generates extend keywords highly related to a query input by a user, and provides a search result optimized to each extend keyword.Type: GrantFiled: September 6, 2017Date of Patent: August 3, 2021Assignees: KAKAO ENTERPRISE CORP, KAKAO CORP.Inventors: Myeong Cheol Shin, Yo Han Ra, Jong In Lee
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Publication number: 20200380382Abstract: A method and apparatus for controlling learning of a model for estimating an intention of an input utterance is disclosed. A method of controlling learning of a model for estimating an intention of an input utterance among a plurality of intentions includes providing a first index corresponding to the number of registered utterances for each intention, providing a second index corresponding to a learning level for each intention, providing a learning target setting interface such that at least one intention that is to be a learning target is selected from among the intentions based on the first index and the second index, and training the model based on the registered utterances for each intention and setting of the learning target for each intention.Type: ApplicationFiled: May 13, 2020Publication date: December 3, 2020Inventors: Seung Won SEO, Tae Uk KIM, Il Nam PARK, Myeong Cheol SHIN, Hye Ryeon LEE, Sung Eun CHOI
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Patent number: 10454729Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.Type: GrantFiled: July 23, 2018Date of Patent: October 22, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jacob C. Sharpe, Fei Tong, Myeong-Cheol Shin, Jeongtaek Lee
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Publication number: 20180331866Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.Type: ApplicationFiled: July 23, 2018Publication date: November 15, 2018Inventors: Jacob C. Sharpe, Fei Tong, Myeong-Cheol Shin, Jeongtaek Lee
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Publication number: 20180270091Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.Type: ApplicationFiled: March 20, 2017Publication date: September 20, 2018Inventors: JACOB C. SHARPE, FEI TONG, MYEONG-CHEOL SHIN, JEONGTAEK LEE
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Patent number: 10079705Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.Type: GrantFiled: March 20, 2017Date of Patent: September 18, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jacob C. Sharpe, Fei Tong, Myeong-Cheol Shin, Jeongtaek Lee
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Publication number: 20180067940Abstract: Disclosed is a search method and apparatus. A search service generates extend keywords highly related to a query input by a user, and provides a search result optimized to each extend keyword.Type: ApplicationFiled: September 6, 2017Publication date: March 8, 2018Inventors: Myeong Cheol SHIN, Yo Han RA, Jong In LEE
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Patent number: 9306781Abstract: An apparatus and a method are provided for receiving a signal in a communication system supporting a Gaussian frequency shift keying (GFSK) modulation scheme. The method includes receiving the signal; and estimating a codeword vector by performing a signal detecting operation based on a GFSK-maximum likelihood sequence estimation (MLSE) scheme, which is based on a GFSK modulation scheme and an MLSE scheme, on the received signal. States of a Viterbi trellis that are used in the GFSK-MLSE scheme are determined based on the GFSK modulation scheme.Type: GrantFiled: April 1, 2015Date of Patent: April 5, 2016Assignee: Samsung Electronics Co., LtdInventors: Myeong-Cheol Shin, Tae-Sung Kim, Jin-Yong Chung
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Publication number: 20150280951Abstract: An apparatus and a method are provided for receiving a signal in a communication system supporting a Gaussian frequency shift keying (GFSK) modulation scheme. The method includes receiving the signal; and estimating a codeword vector by performing a signal detecting operation based on a GFSK-maximum likelihood sequence estimation (MLSE) scheme, which is based on a GFSK modulation scheme and an MLSE scheme, on the received signal. States of a Viterbi trellis that are used in the GFSK-MLSE scheme are determined based on the GFSK modulation scheme.Type: ApplicationFiled: April 1, 2015Publication date: October 1, 2015Inventors: Myeong-Cheol SHIN, Tae-Sung KIM, Jin-Yong CHUNG
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Patent number: 8660199Abstract: To demodulate a quadrature amplitude modulation (QAM) signal, a reception point is determined corresponding to a symbol in the QAM signal that is received where the symbol is mapped to one reference point of a plurality of reference points in a rotated constellation and the plurality of reference points are represented by an in-phase (I) coordinate and a quadrature-phase (Q) coordinate. A plurality of candidate points corresponding to a portion of the plurality of reference points are selected based on distances between the reception point and the respective reference points. The reception point is demapped by calculating a plurality of log-likelihood ratios based on the plurality of candidate points, the plurality of log-likelihood ratios corresponding to bits of data represented by the reception point.Type: GrantFiled: March 29, 2012Date of Patent: February 25, 2014Assignee: Samsung Electronics Co., Ltd.Inventor: Myeong-Cheol Shin
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Patent number: 8607119Abstract: The present invention relates to a method and a system for transmitting and receiving control information of an Multi-Input Multi-Output (MIMO) system, wherein the control information consists of information bits and parity bits. A base station transmits the control information including the location information for where the control information of the other terminal is transmitted. A terminal receives the control information of the other terminal based on the location information for where the control information of the other terminal is received. Therefore, the precoding matrix of the other terminal can be obtained from the received control information. The invention enables the removal of interference through the obtained precoding matrix when receiving a data symbol in an environment where a channel is not in a good state.Type: GrantFiled: December 9, 2009Date of Patent: December 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jinxia Cheng, Myeong Cheol Shin, Sang Boh Yun, Sung Soo Hwang, Sei Joon Shim, Sung Hwan Kim
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Publication number: 20120250805Abstract: To demodulate a quadrature amplitude modulation (QAM) signal, a reception point is determined corresponding to a symbol in the QAM signal that is received where the symbol is mapped to one reference point of a plurality of reference points in a rotated constellation and the plurality of reference points are represented by an in-phase (I) coordinate and a quadrature-phase (Q) coordinate. A plurality of candidate points corresponding to a portion of the plurality of reference points are selected based on distances between the reception point and the respective reference points. The reception point is demapped by calculating a plurality of log-likelihood ratios based on the plurality of candidate points, the plurality of log-likelihood ratios corresponding to bits of data represented by the reception point.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Myeong-Cheol SHIN
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Patent number: 8121212Abstract: Respective codewords of quantization codebooks corresponding to a number of data streams are selected based on channel information estimated by a received training symbol. A stream mode is selected among stream modes to determine a modulation method applied to each data stream. The data stream is detected by using the codeword corresponding to the quantization codebook of the data stream corresponding to the selected stream mode as a precode matrix, and the detected data stream is modulated. In this case, a receiving apparatus performs a feedback operation so that indexes of the selected stream mode and the codeword used as the precode matrix may be transmitted to the transmitting apparatus. The transmitting apparatus selects the number of transmitted data streams and the modulation method based on the transmitted index of feedback streams by the feedback operation.Type: GrantFiled: December 4, 2006Date of Patent: February 21, 2012Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Dong-Seung Kwon, Young-Seog Song, Seung-Joon Lee, Jong-Ee Oh, Chungyong Lee, Myeong-Cheol Shin
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Patent number: 8121208Abstract: The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M transmit antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.Type: GrantFiled: August 10, 2005Date of Patent: February 21, 2012Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Young-Seog Song, Seong-Rag Kim, In-Kyeong Choi, Choong-Il Yeh, Seung-Joon Lee, Hyoung-Soo Lim, Kwang-Jae Lim, Yu-Ro Lee, Jong-Ee Oh, Dong-Seung Kwon, Seung-Ku Hwang, Chung-Yong Lee, Myeong-Cheol Shin
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Publication number: 20110302480Abstract: The present invention relates to a method and a system for transmitting and receiving control information of an Multi-Input Multi-Output (MIMO) system, wherein the control information consists of information bits and parity bits. A base station transmits the control information including the location information for where the control information of the other terminal is transmitted. A terminal receives the control information of the other terminal based on the location information for where the control information of the other terminal is received. Therefore, the precoding matrix of the other terminal can be obtained from the received control information. The invention enables the removal of interference through the obtained precoding matrix when receiving a data symbol in an environment where a channel is not in a good state.Type: ApplicationFiled: December 9, 2009Publication date: December 8, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jinxia Cheng, Myeong Cheol Shin, Sang Boh Yun, Sung Soo Hwang, Sei Joon Shim, Sung Hwan Kim
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Method and device for optimizing codebook for quantized precoder by using steepest descent algorithm
Patent number: 7746936Abstract: In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.Type: GrantFiled: May 2, 2007Date of Patent: June 29, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Dong-Seung Kwon, Young-Seog Song, In-Kyeong Choi, Chung-Yong Lee, Myeong-Cheol Shin, Myoung-Seog Kim, Seung-Joon Lee -
Publication number: 20090252240Abstract: Respective codewords of quantization codebooks corresponding to a number of data streams are selected based on channel information estimated by a received training symbol. A stream mode is selected among stream modes to determine a modulation method applied to each data stream. The data stream is detected by using the codeword corresponding to the quantization codebook of the data stream corresponding to the selected stream mode as a precode matrix, and the detected data stream is modulated. In this case, a receiving apparatus performs a feedback operation so that indexes of the selected stream mode and the codeword used as the precode matrix may be transmitted to the transmitting apparatus. The transmitting apparatus selects the number of transmitted data streams and the modulation method based on the transmitted index of feedback streams by the feedback operation.Type: ApplicationFiled: December 4, 2006Publication date: October 8, 2009Applicant: Electronics and Telecommunications Research InstituteInventors: Dong-Seung Kwon, Young-Seog Song, Seung-Joon Lee, Jong-Ee Oh, Chungyong Lee, Myeong-Cheol Shin
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Publication number: 20080240276Abstract: The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M tansrni antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.Type: ApplicationFiled: August 10, 2005Publication date: October 2, 2008Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESERCH INSTITUTE, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Young-Seog Song, Seong-Rag Kim, In-Kyeong Choi, Choong-ll Yeh, Seung-Joon Lee, Hyoung-Soo Lim, Kwang-Jae Lim, Yu-Ro Lee, Jong-Ee Oh, Dong-Seung Kwon, Seung-Ku Hwang, Chung-Yong Lee, Myeong-Cheol Shin