Kenneth Gould, Joo Chung, Michael Sun, Frank Huang: System and method for multicast stream failover. Road Runner, ServiceCo, Roberts Abokhair & Mardula, January 4, 2005: US06839865 (20 worldwide citation)

A system and method for avoiding a single point of failure in the broadcast of streaming data. The system uses multiple redundant servers steaming the exactly same data to a failover device. The failover device buffers the steams into a primary and secondary data stream and automatically switches fr ...

Jae Hyoun Yoo, Hyun Joo Chung, Sang Bae Chon, Jeong Il Seo, Kyeong Ok Kang, Koang Mo Sung: Apparatus and method of reproducing surround wave field using wave field synthesis based on speaker array. Electronics and Telecommunications Research Institute, Staas & Halsey, February 17, 2015: US08958582 (12 worldwide citation)

Disclosed are an apparatus and method of surround wave field synthesizing a multi-channel signal excluding sound image localization information. A wave field synthesis and reproduction apparatus may include a signal classification unit to classify an inputted multi-channel signal into a primary sign ...

Un Chul Paek, Young Joo Chung, Chang Seok Kim, Yong Woo Park, Hyun Soo Park, Kyung Ho Kwack: Method of fabricating optical fiber gratings maximizing residual mechanical stress in the optical fibers. Samsung Electronics, Robert E Bushnell Esq, May 27, 2003: US06568220 (10 worldwide citation)

An optical fiber for maximizing residual mechanical stress and an optical fiber grating fabricating method using the optical fiber are provided. The optical fiber includes a core formed of silica, for propagating light, and a cladding formed of boron-doped silica, surrounding the core. Alternatively ...

Seung Hun Oh, Ki Un Namkoong, Man Seok Seo, Un Chul Paek, Kyung Hwan Oh, Ghie Hugh Song, Mun Hyun Do, Young Joo Chung: Apparatus and method for overcladding optical fiber preform rod and optical fiber drawing method. SamSung Electroncs, Robert E Bushnell Esq, April 25, 2000: US06053013 (9 worldwide citation)

There are provided an optical fiber rod overcladding apparatus and method, and an optical fiber drawing method. In the preform rod overcladding method, a preform rod is clamped in a top chuck and leveled, and a glass tube is mounted in a bottom chuck and leveled. The preform rod is coaxially inserte ...

Hyun Joo Chung: Contents search system for providing reliable contents through network and method thereof. NHN Corporation, Knobbe Martens Olson & Bear, July 28, 2009: US07567970 (7 worldwide citation)

Disclosed is a contents search system and method for providing reliable search results. In the method, search results are identified by searching contents for information that pertains to a query word inputted from a user via the network are searched. Then, a degree of reliability of the search resu ...

Chung Dam Song, Eek Joo Chung, Hyun Ho Kim: Method of mounting condenser microphone on main PCB and condenser microphone adapted for the same. BSE, Keusey Tutunjian & Bitetto P C, September 11, 2007: US07269267 (5 worldwide citation)

A condenser microphone and a method of mounting a condenser microphone on a main PCB are provided. The method includes assembling the condenser microphone by assembling elements of the condenser microphone such that a vibration plate including a diaphragm and a backplate is directed toward an opened ...

Un Chul Paek, Young Joo Chung, Chang Seok Kim, Young Geun Han, Hyun Soo Park, Kyung Ho Kwack: Erbium-doped optical fiber having gratings formed therein and fabrication method thereof. Samsung Electronics, Robert E Bushnell Esq, May 21, 2002: US06392789 (5 worldwide citation)

An erbium-doped optical fiber (EDF) and a fabricating method thereof The erbium-doped optical fiber has a core formed by substantially doping silica with erbium and having gratings formed therein at a predetermined period, for propagating light therethrough, and a cladding surrounding the core and h ...

Huesup Song, Gyeungho Kim, Doh Yeon Kim, Tai Joo Chung: Process for manufacture of a zirconia material resistant to low temperature degradation. Korea Institute of Science & Technology, Scully Scott Murphy & Presser, October 27, 1998: US05827572 (4 worldwide citation)

A zirconia material resistant to low temperature degradation and process for manufacturing thereof includes heat treating zirconia material or zirconia composite material at 1200.degree.-1700.degree. C. in the presence of nitrogen source.

Chung Dam Song, Eek Joo Chung, Hyun Ho Kim: SMD type biased condenser microphone. BSE, Keusey Tutunjian & Bitetto P C, September 11, 2007: US07269268 (4 worldwide citation)

A surface mounted device (SMD) type biased condenser microphone includes two terminals for a surface mounting process. The SMD type biased condenser microphone includes a grounding terminal for connecting with an external circuit, a diaphragm/backplate set, one end of which is connected to the groun ...

Un Chul Paek, Young Joo Chung, Chang Seok Kim, Jong Ho Kim, Hyun Soo Park, Kyung Ho Kwack: Device and method for forming anti-symmetric long period optical fiber gratings by microbending. Samsung Electronics, Robert E Bushnell Esq, May 7, 2002: US06385370 (4 worldwide citation)

There is provided a device and method for forming optical fiber anti-symmetric long period gratings by microbending. In the optical fiber grating forming device, a laser system emits a CO