Patents by Inventor No-Wook Park
No-Wook Park 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: 9960807Abstract: Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.Type: GrantFiled: June 9, 2016Date of Patent: May 1, 2018Assignee: KT CORPORATIONInventors: Hyung-Jin Park, Kwangyeol Yoon, No Wook Park, In-Taek Jeong
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Patent number: 9948353Abstract: Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.Type: GrantFiled: May 24, 2017Date of Patent: April 17, 2018Assignee: KT CORPORATIONInventors: Hyung-Jin Park, Kwangyeol Yoon, No Wook Park, In-Taek Jeong
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Patent number: 9866273Abstract: Disclosed are a network access device and method for improving data transmission efficiency without replacement of a home network or additional pairing. A network access device is connected to a control server through an external wideband network and connected to at least one end point through at least one cable. Such a network access devices includes an interface module configured to couple with the network, at least one domain master connected to the at least one end point, an adaptation module configured to convert G.hn signals to Ethernet signals between the domain master and the interface module, and a processor configured to control the interface module and the at least one domain master. The processor communicates with the control server through an external wideband network to check status of the home network and provisions the home network in real time.Type: GrantFiled: May 19, 2014Date of Patent: January 9, 2018Assignee: KT CORPORATIONInventors: No Wook Park, Hyung Jin Park, In Taek Jeong
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Publication number: 20170257142Abstract: Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.Type: ApplicationFiled: May 24, 2017Publication date: September 7, 2017Applicant: KT CORPORATIONInventors: Hyung-Jin PARK, Kwangyeol YOON, No Wook PARK, In-Taek JEONG
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Publication number: 20160365895Abstract: Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Applicant: KT CORPORATIONInventors: Hyung-Jin PARK, Kwangyeol YOON, No Wook PARK, In-Taek JEONG
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Publication number: 20160308581Abstract: Disclosed are a network access device and method for improving data transmission efficiency without replacement of a home network or additional pairing. A network access device is connected to a control server through an external wideband network and connected to at least one end point through at least one cable. Such a network access devices includes an interface module configured to couple with the network, at least one domain master connected to the at least one end point, an adaptation module configured to convert G.hn signals to Ethernet signals between the domain master and the interface module, and a processor configured to control the interface module and the at least one domain master. The processor communicates with the control server through an external wideband network to check status of the home network and provisions the home network in real time.Type: ApplicationFiled: May 19, 2014Publication date: October 20, 2016Applicant: KT CORPORATIONInventors: No Wook PARK, Hyung Jin PARK, In Taek JEONG
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Publication number: 20080019694Abstract: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit is injection-locked at the same wavelength as that of the optical signal outputted from the central office, thereby enabling the optical network unit to output an optical signal having the same wavelength as that of the optical signal outputted from the central office. In accordance with this system, it is possible to transmit and receive forward and backward data at the same wavelength by the unit of channels. Since inexpensive F-P LDs are used as respective light sources of the central office and optical network units, it is possible to efficiently and economically implement a WDM PON system.Type: ApplicationFiled: July 3, 2007Publication date: January 24, 2008Inventors: Jae-Won Song, Jong-Hoon Lee, No-Wook Park, Jun-Hyok Seo, Man-Shik Jeon, Suck-Woo Jang, Jang-Ki Baek
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Publication number: 20080013951Abstract: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit is injection-locked at the same wavelength as that of the optical signal outputted from the central office, thereby enabling the optical network unit to output an optical signal having the same wavelength as that of the optical signal outputted from the central office. In accordance with this system, it is possible to transmit and receive forward and backward data at the same wavelength by the unit of channels. Since inexpensive F-P LDs are used as respective light sources of the central office and optical network units, it is possible to efficiently and economically implement a WDM PON system.Type: ApplicationFiled: July 3, 2007Publication date: January 17, 2008Inventors: Jae-Won SONG, Jong-Hoon LEE, No-Wook PARK, Jun-Hyok SEO, Man-Shik JEON, Suck-Woo JANG, Jang-Ki BAEK
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Patent number: 7254332Abstract: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit is injection-locked at the same wavelength as that of the optical signal outputted from the central office, thereby enabling the optical network unit to output an optical signal having the same wavelength as that of the optical signal outputted from the central office. In accordance with this system, it is possible to transmit and receive forward and backward data at the same wavelength by the unit of channels. Since inexpensive F-P LDs are used as respective light sources of the central office and optical network units, it is possible to efficiently and economically implement a WDM PON system.Type: GrantFiled: August 5, 2003Date of Patent: August 7, 2007Assignee: Jun-Kook ChoiInventors: Jae-Won Song, Jong-Hoon Lee, No-Wook Park, Jun-Hyok Seo, Man-Shik Jeon, Suck-Woo Jang, Jang-Ki Baek
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Publication number: 20040033076Abstract: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit is injection-locked at the same wavelength as that of the optical signal outputted from the central office, thereby enabling the optical network unit to output an optical signal having the same wavelength as that of the optical signal outputted from the central office. In accordance with this system, it is possible to transmit and receive forward and backward data at the same wavelength by the unit of channels. Since inexpensive F-P LDs are used as respective light sources of the central office and optical network units, it is possible to efficiently and economically implement a WDM PON system.Type: ApplicationFiled: August 5, 2003Publication date: February 19, 2004Inventors: Jae-Won Song, Jong-Hoon Lee, No-Wook Park, Jun-Hyok Seo, Man-Shik Jeon, Suck-Woo Jang, Jang-Ki Baek