Patents by Inventor Jai-Hyung CHO
Jai-Hyung CHO 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: 9851430Abstract: A terminal that receives carrier signals with start point information indicated thereon from three or more base stations (BSs) including a serving BS, calculates a difference in phase angles between carrier signals of two BSs while changing the two BSs by using the start point information of the carrier signals of the two BSs among the three or more BSs, and calculates coordinates of the terminal by using the calculated differences in distance of arrival is provided.Type: GrantFiled: June 1, 2015Date of Patent: December 26, 2017Assignee: Electronics and Telecommunications Research InstituteInventor: Jai Hyung Cho
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Publication number: 20160011297Abstract: A terminal that receives carrier signals with start point information indicated thereon from three or more base stations (BSs) including a serving BS, calculates a difference in phase angles between carrier signals of two BSs while changing the two BSs by using the start point information of the carrier signals of the two BSs among the three or more BSs, and calculates coordinates of the terminal by using the calculated differences in phase angles is provided.Type: ApplicationFiled: June 1, 2015Publication date: January 14, 2016Inventor: JAI HYUNG CHO
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Patent number: 9106895Abstract: Provided is a multi-dimensional layered modulation transmitting and receiving apparatus and method for stereoscopic three-dimensional (3D) video data. The transmitting apparatus may convert multi-dimensional data to a plurality of stream data by mapping the multi-dimensional data to a complex number plane, and may transmit the plurality of stream data by mapping the plurality of stream data to dimensions divided based on a time and a space, respectively. The receiving apparatus may determine a signal strength of received signal, a performance, a power mode, may determine a service image corresponding to the signal strength, the performance, the power mode, may determine a dimension corresponding to the service image, and may receive stream data of the determined dimension.Type: GrantFiled: August 18, 2011Date of Patent: August 11, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Seok Ho Won, Jai Hyung Cho, Jong Soo Lim, Jin Woo Hong
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Patent number: 8819526Abstract: Provided is a method and apparatus for encoding and decoding in which block coding is applied. According to a method and apparatus for block coding encoding and decoding, a minimum quality seamless service may be provided by reliably recovering high importance data even though continuous data loss occurs in a wired and wireless transmission line. A transposed duplication calculation or a post duplication calculation may be performed with respect to the high importance data. Data of a predetermined lost time zone may be recovered by duplicated data of another time zone.Type: GrantFiled: July 8, 2011Date of Patent: August 26, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jai Hyung Cho, Sang Ho Lee, Doug Young Suh, Chul Keun Kim
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Patent number: 8761766Abstract: Provided are a method for transmitting and receiving broadcasting service information and a mobile station for a broadcasting service. The method for transmitting broadcasting service information at a base station, includes registering a mobile station in a first cell, wherein the first cell is a cell managed by the base station, receiving vehicle related information from the mobile station mounted on a vehicle, and broadcasting the received vehicle related information to target cells.Type: GrantFiled: October 30, 2009Date of Patent: June 24, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jai-Hyung Cho, Hyunsuk Roh, Sang-Ho Lee
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Patent number: 8711794Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.Type: GrantFiled: December 22, 2011Date of Patent: April 29, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Mi Young Yun, Jung Mo Moon, Sang Ho Lee, Eun Hee Hyun, Jai Hyung Cho, Jee Hyeon Na, Chul Park, Sun Hwa Lim, Hyun Suk Roh, Dae Ik Kim, Jae Ho Kim, Yeong Jin Kim, Dae Sik Kim
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Patent number: 8650592Abstract: Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay.Type: GrantFiled: June 4, 2010Date of Patent: February 11, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jai Hyung Cho, Sang Ho Lee, Yeong Jin Kim, Jee Hyeon Na, Jung Mo Moon, Dae Ik Kim, Jae Ho Kim, Eun Hee Hyun, Hyun Suk Roh, Chul Park, Sun Hwa Lim, Mi Young Yun, Ho Choong Cho, Doug Young Suh, Chul Keun Kim, Eun Ju Park
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Publication number: 20130188014Abstract: Provided is a multi-dimensional layered modulation transmitting and receiving apparatus and method for stereoscopic three-dimensional (3D) video data. The transmitting apparatus may convert multi-dimensional data to a plurality of stream data by mapping the multi-dimensional data to a complex number plane, and may transmit the plurality of stream data by mapping the plurality of stream data to dimensions divided based on a time and a space, respectively. The receiving apparatus may determine a signal strength of received signal, a performance, a power mode, may determine a service image corresponding to the signal strength, the performance, the power mode, may determine a dimension corresponding to the service image, and may receive stream data of the determined dimension.Type: ApplicationFiled: August 18, 2011Publication date: July 25, 2013Inventors: Seok Ho Won, Jai Hyung Cho, Jong Soo Lim, Jin Woo Hong
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Publication number: 20130111302Abstract: Provided is a method and apparatus for encoding and decoding in which block coding is applied. According to a method and apparatus for block coding encoding and decoding, a minimum quality seamless service may be provided by reliably recovering high importance data even though continuous data loss occurs in a wired and wireless transmission line. A transposed duplication calculation or a post duplication calculation may be performed with respect to the high importance data. Data of a predetermined lost time zone may be recovered by duplicated data of another time zone.Type: ApplicationFiled: July 8, 2011Publication date: May 2, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Jai Hyung Cho, Sang Ho Lee, Doug Young Suh, Chul Keun Kim
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Publication number: 20120163274Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Mi Young YUN, Jung Mo MOON, Sang Ho LEE, Eun Hee HYUN, Jai Hyung CHO, Jee Hyeon NA, Chul PARK, Sun Hwa LIM, Hyun Suk ROH, Dae Ik KIM, Jae Ho KIM, Yeong Jin KIM, Dae Sik KIM
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Publication number: 20120072955Abstract: Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay.Type: ApplicationFiled: June 4, 2010Publication date: March 22, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Jai Hyung Cho, Sang Ho Lee, Yeong Jin Kim, Jee Hyeon Na, Jung Mo Moon, Dae Ik Kim, Jae Ho Kim, Eun Hee Hyun, Hyun Suk Roh, Chul Park, Sun Hwa Lim, Mi Young Yun, Ho Choong Cho, Doug Young Suh, Chul Keun Kim, Eun Ju Park
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Publication number: 20110314505Abstract: The present invention relates to a method and apparatus of providing a shared Video on Demand (VoD) broadcasting service using a mobile communication network. The method and apparatus may concurrently provide, to a plurality of terminals requesting a first content, requested content from among broadcasting requested contents selected from a broadcasting content list, thereby effectively using radio resources.Type: ApplicationFiled: January 21, 2010Publication date: December 22, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jai Hyung Cho, Sang Ho Lee, Dong Jin Shin
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Publication number: 20110151847Abstract: A contents providing apparatus and method is provided. A contents providing apparatus based on a mobile communication network, the contents providing apparatus including: a receiving unit receiving contents and contents providing area information of the contents from a contents provider, the contents providing area information being information about an area where the contents is provided; an area group setting unit retrieving at least one cell based on the contents providing area information, and setting the retrieved at least one cell as a contents providing area group of the contents; and a transmitting unit transmitting the contents to the set contents providing area group.Type: ApplicationFiled: December 31, 2008Publication date: June 23, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Jae-ho Kim, Sang Ho Lee, Jai Hyung Cho, Eun Hee Hyun
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Publication number: 20110078730Abstract: Provided is a method and apparatus for scheduling a radio access to reduce a channel zapping delay. The radio access scheduling method may receive abstract information with respect to all of currently receivable channels at each channel scheduling interval, and may receive the abstract information in advance and provide the abstract information when a channel change request is received, and thereby reduce the channel zapping delay.Type: ApplicationFiled: August 9, 2010Publication date: March 31, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Jee Hyeon NA, Jung Mo MOON, Jai Hyung CHO, Sang Ho LEE, Jae Heung KIM, Soon Gi PARK, Changki KIM, Yeon Seung SHIN
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Publication number: 20100130234Abstract: A personal broadcast service transmitter and a mobile terminal are provided. The mobile terminal receiving a personal broadcast service includes a location information transmitter to transmit location information of the mobile terminal to a personal broadcast service transmitter transmitting the personal broadcast service over a mobile communication network; and a personal broadcast service receiver to receive from the personal broadcast service transmitter the personal broadcast service generated based on the location information of the mobile terminal.Type: ApplicationFiled: October 15, 2009Publication date: May 27, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Dong-jin SHIN, Jai-hyung CHO, Sang-ho LEE, Yeong-jin KIM
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Publication number: 20100112978Abstract: Provided are a method for transmitting and receiving broadcasting service information and a mobile station for a broadcasting service. The method for transmitting broadcasting service information at a base station, includes registering a mobile station in a first cell, wherein the first cell is a cell managed by the base station, receiving vehicle related information from the mobile station mounted on a vehicle, and broadcasting the received vehicle related information to target cells.Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Jai-Hyung CHO, Hyunsuk ROH, Sang-Ho LEE
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Publication number: 20080225770Abstract: A method and a system for transmitting and receiving Ethernet data to/from a mobile terminal supporting high speed mobility are provided.Type: ApplicationFiled: December 8, 2006Publication date: September 18, 2008Inventors: Jai-Hyung Cho, Sungsoo Kang
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Publication number: 20080107025Abstract: Provided is a switching device for detecting and removing a looping phenomenon in a data communication network and a method using the switching device. The method includes: detecting a frame checksum value; counting the number of times of a checksum value corresponding to the frame checksum value is received; and declaring a looping phenomenon when the number of times exceeds a predetermined threshold. The method makes it possible to easily detect a looping phenomenon using the checksum value.Type: ApplicationFiled: May 16, 2005Publication date: May 8, 2008Applicant: Electronics and Telecommunications Research InstitInventors: Jai-Hyung Cho, Sung-Back Hong