Patents by Inventor Koeng-Mo Sung
Koeng-Mo Sung 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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Patent number: 8483395Abstract: Provided are sound field reproducing apparatus and method. The sound field reproducing apparatus includes an input unit for receiving reflection reproducing information, a signal processor for selecting loudspeakers and calculating reflection signal for applying a panning algorithm based on the reflection reproducing information, a signal treatment unit for localizing the calculated reflection signal on a virtual sound image according to the panning algorithm; and a reproducer for reproducing the localized reflection signals through the selected loudspeakers.Type: GrantFiled: May 1, 2008Date of Patent: July 9, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-Hyoun Yoo, Hwan Shim, Hyunjoo Chung, Jun-Seok Lim, Tae-Jin Lee, Dae-Young Jang, Koeng-Mo Sung, Kyeongok Kang, Jin-Woo Hong, Jin-Woong Kim, Chieteuk Ahn
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Patent number: 8271291Abstract: A method for identifying a frame type is disclosed. The present invention includes receiving current frame type information, obtaining previously received previous frame type information, generating frame identification information of a current frame using the current frame type information and the previous frame type information, and identifying the current frame using the frame identification information. And, a method for identifying a frame type is disclosed. The present invention includes receiving a backward type bit corresponding to current frame type information, obtaining a forward type bit corresponding to previous frame type information, generating frame identification information of a current frame by placing the backward type bit at a first position and placing the forward type bit at a second position.Type: GrantFiled: May 8, 2009Date of Patent: September 18, 2012Assignee: LG Electronics Inc.Inventors: Sang Bae Chon, Lae Hoon Kim, Koeng Mo Sung
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Patent number: 8214222Abstract: A method for identifying a frame type is disclosed. The present invention includes receiving current frame type information, obtaining previously received previous frame type information, generating frame identification information of a current frame using the current frame type information and the previous frame type information, and identifying the current frame using the frame identification information. And, a method for identifying a frame type is disclosed. The present invention includes receiving a backward type bit corresponding to current frame type information, obtaining a forward type bit corresponding to previous frame type information, generating frame identification information of a current frame by placing the backward type bit at a first position and placing the forward type bit at a second position.Type: GrantFiled: May 8, 2009Date of Patent: July 3, 2012Assignee: LG Electronics Inc.Inventors: Sang Bae Chon, Lae Hoon Kim, Koeng Mo Sung
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Patent number: 8170246Abstract: Provided are an apparatus and a method for reproducing a surround wave field using wave field synthesis. The apparatus includes an audio signal analyzer for analyzing a received multi-channel audio signal to check the number of audio signal channels, and extracting a sound source signal for each checked channel from the multi-channel audio signal; a wave field synthesis renderer for localizing the extracted sound source signal for each channel at a virtual sound image outside a narrow space using wave field synthesis so that the extracted sound source signal is suitable for the number of the checked audio signal channels; and an audio reproducer for reproducing the localized virtual sound source signal.Type: GrantFiled: July 8, 2008Date of Patent: May 1, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-hyoun Yoo, Dae-Young Jang, Hwan Shim, Hyunjoo Chung, Jun-Seok Lim, Koeng-Mo Sung, Tae-Jin Lee, Kyeongok Kang, Jin-Woong Kim, Chieteuk Ahn
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Patent number: 7783495Abstract: Provided is a method and apparatus for encoding/decoding a multi-channel audio signal. The apparatus for encoding a multi-channel audio signal includes a frame converter for converting the multi-channel audio signal into a framed audio signal; means for downmixing the framed audio signal; means for encoding the downmixed audio signal; a source location information estimator for estimating source location information from the framed multi-channel audio signal; means for quantizing the estimated source location information; and means for multiplexing the encoded audio signal and the quantized source location information, to generate an encoded multi-channel audio signal.Type: GrantFiled: July 8, 2005Date of Patent: August 24, 2010Assignees: Electronics and Telecommunications Research Institute, Seoul National University Industry FoundationInventors: Jeong II Seo, Han Gil Moon, Seung Kwon Beack, Kyeong Ok Kang, In Seon Jang, Koeng Mo Sung, Min Soo Hahn, Jin Woo Hong
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Publication number: 20090313011Abstract: A method for identifying a frame type is disclosed. The present invention includes receiving current frame type information, obtaining previously received previous frame type information, generating frame identification information of a current frame using the current frame type information and the previous frame type information, and identifying the current frame using the frame identification information. And, a method for identifying a frame type is disclosed. The present invention includes receiving a backward type bit corresponding to current frame type information, obtaining a forward type bit corresponding to previous frame type information, generating frame identification information of a current frame by placing the backward type bit at a first position and placing the forward type bit at a second position.Type: ApplicationFiled: May 8, 2009Publication date: December 17, 2009Applicant: LG Electronics INC.Inventors: Sang Bae CHON, Lae Hoon Kim, Koeng Mo Sung
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Publication number: 20090306994Abstract: A method for identifying a frame type is disclosed. The present invention includes receiving current frame type information, obtaining previously received previous frame type information, generating frame identification information of a current frame using the current frame type information and the previous frame type information, and identifying the current frame using the frame identification information. And, a method for identifying a frame type is disclosed. The present invention includes receiving a backward type bit corresponding to current frame type information, obtaining a forward type bit corresponding to previous frame type information, generating frame identification information of a current frame by placing the backward type bit at a first position and placing the forward type bit at a second position.Type: ApplicationFiled: May 8, 2009Publication date: December 10, 2009Applicant: LG Electronics Inc.Inventors: Sang Bae CHON, Lae Hoon Kim, Koeng Mo Sung
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Publication number: 20090171671Abstract: There is an apparatus for evaluating the audio quality of a multi-channel audio codec, including: a preprocessing unit for synthesizing binaural signals based on multi-channel audio signals transmitted through a multi-channel of a multi-channel audio reproduction system; an output variable calculator for calculating an interaural cross-correlation coefficient distortion (IACCDist) and other output variables of the binaural signals; and an artificial neural network circuit for outputting a grade of the perceived quality based on the interaural cross-correlation coefficient distortion (IACCDist) and other output variables calculated in the output variable calculator.Type: ApplicationFiled: February 5, 2007Publication date: July 2, 2009Inventors: Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Kyeong-Ok Kang, Jin-Woo Hong, In-Yong Choi, Sang-Bae Chon, Koeng-Mo Sung
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Publication number: 20090136048Abstract: Provided are an apparatus and a method for reproducing a surround wave field using wave field synthesis. The apparatus includes an audio signal analyzer for analyzing a received multi-channel audio signal to check the number of audio signal channels, and extracting a sound source signal for each checked channel from the multi-channel audio signal; a wave field synthesis renderer for localizing the extracted sound source signal for each channel at a virtual sound image outside a narrow space using wave field synthesis so that the extracted sound source signal is suitable for the number of the checked audio signal channels; and an audio reproducer for reproducing the localized virtual sound source signal.Type: ApplicationFiled: July 8, 2008Publication date: May 28, 2009Inventors: Jae-hyoun YOO, Dae-Young JANG, Hwan SHIM, Hyunjoo CHUNG, Jun-Seok LIM, Koeng-Mo SUNG, Tae-Jin LEE, Kyeongok KANG, Jin-Woong KIM, Chieteuk AHN
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Publication number: 20080279389Abstract: Provided are sound field reproducing apparatus and method. The sound field reproducing apparatus includes an input unit for receiving reflection reproducing information, a signal processor for selecting loudspeakers and calculating reflection signal for applying a panning algorithm based on the reflection reproducing information, a signal treatment unit for localizing the calculated reflection signal on a virtual sound image according to the panning algorithm; and a reproducer for reproducing the localized reflection signals through the selected loudspeakers.Type: ApplicationFiled: May 1, 2008Publication date: November 13, 2008Inventors: Jae-Hyoun YOO, Hwan SHIM, Hyunjoo CHUNG, Jun-Seok LIM, Tae-Jin LEE, Dae-Young JANG, Koeng-Mo SUNG, Kyeongok KANG, Jin-Woo HONG, Jin-Woong KIM, Chieteuk AHN
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Publication number: 20080167880Abstract: Provided is a method and apparatus for encoding/decoding a multi-channel audio signal. The apparatus for encoding a multi-channel audio signal includes a frame converter for converting the multi-channel audio signal into a framed audio signal; means for downmixing the framed audio signal; means for encoding the downmixed audio signal; a source location information estimator for estimating source location information from the framed multi-channel audio signal; means for quantizing the estimated source location information; and means for multiplexing the encoded audio signal and the quantized source location information, to generate an encoded multi-channel audio signal.Type: ApplicationFiled: July 8, 2005Publication date: July 10, 2008Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong II Seo, Han Gil Moon, Seung Kwon Beack, Kyeong Ok Kang, In Seon Jang, Koeng Mo Sung, Min Soo Hahn, Jin Woo Hong
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Patent number: 6657572Abstract: A digital noise-shaping filter with real coefficients for delta-sigma data converters used in a digital amplifier, 1-bit digital/analog converter, 1-bit analog/digital converter and the like, and a method for making the same. The present digital noise-shaping filter has improved noise suppression performance and system stability and reduced calculation complexity. To this end, the digital noise-shaping filter comprises a noise transfer function expressed by NTF(z)=−1+a1z−1+a2z−2+&Lgr;+aNz−N. The noise transfer function has optimum real coefficients or real coefficients approximating them.Type: GrantFiled: May 7, 2002Date of Patent: December 2, 2003Inventors: Ducksoo Lee, Yeongha Choi, Sejin Doo, Kyoungsoo Park, Koeng-Mo Sung
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Publication number: 20030086500Abstract: A digital noise-shaping filter with real coefficients for delta-sigma data converters used in a digital amplifier, 1-bit digital/analog converter, 1-bit analog/digital converter and the like, and a method for making the same. The present digital noise-shaping filter has improved noise suppression performance and system stability and reduced calculation complexity. To this end, the digital noise-shaping filter comprises a noise transfer function expressed by NTF(z)=−1+a1z−1+a2z−2+&Lgr;+aNz−N. The noise transfer function has optimum real coefficients or real coefficients approximating them.Type: ApplicationFiled: May 7, 2002Publication date: May 8, 2003Inventors: Ducksoo Lee, Yeongha Choi, Sejin Doo, Kyoungsoo Park, Koeng-mo Sung