Abstract: An apparatus for identifying a web page for an industrial control system includes an information collection unit and an industrial control system identification unit. The information collection unit receives IP targets, from which web pages are to be collected, from a user, and collects web pages and information from the IP targets. The industrial control system identification unit identifies web pages for one or more industrial control systems with respect to the IP targets based on the information collected by the information collection unit.
Type:
Grant
Filed:
June 17, 2015
Date of Patent:
September 17, 2019
Assignee:
ELECTRONICS AND TELECOMMUICATIONS RESEARCH INSTITUTE
Inventors:
Sungho Jeon, Jeong-Han Yun, Woonyon Kim, Eung Ki Park, Sangwoo Park
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 3/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for quadrature phase shift keying (QPSK) modulation.
Type:
Grant
Filed:
December 8, 2016
Date of Patent:
June 25, 2019
Assignee:
Electronics and Telecommuications Research Institute
Inventors:
Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
Abstract: A hybrid type passively and actively mode-locked laser scheme is disclosed, in which not only the capability of producing ultra-short optical pulses by the conventional passively mode-locked optical fiber laser scheme is utilized, but also the repetition rate variation capability and the optical pulse synchronization capability of the conventional actively mode-locked laser scheme are utilized. Consequently, all the advantages of the two conventional laser schemes are obtained in the present invention. Specifically, two loops are coupled together, and one of the two loops consists of a non-linear amplifying loop of the existing passively mode-locked scheme, while the other loop includes an optical modulator and an optical gain medium for the loop to perform the function of an actively mode-locked scheme. Further the other loop includes a time delay line so as to adjust the laser oscillation repetition rate.
Type:
Grant
Filed:
September 13, 1996
Date of Patent:
October 27, 1998
Assignee:
Electronics and Telecommuications Research Institute
Inventors:
Kyong-Hon Kim, Seo-Yeon Park, Hak-Kyu Lee, Min-Yong Jeon