Patent application number | Description | Published |
20140133843 | OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT FOR SUPPORTING SLEEP MODE THEREOF - An optical line terminal is provided which includes an upward band allocating unit configured to send an upward bandwidth allocation map to an optical network unit and to determine a sleep mode of the optical network unit according to whether a response message corresponding to the upward bandwidth allocation map is received; and an alarm unit configured to determine an upward bandwidth allocation map transfer operation as a normal operation according to an operation of the sleep mode. | 05-15-2014 |
20140178072 | OPTICAL LINE TERMINAL AND METHOD OF REGISTERING OPTICAL NETWORK TERMINAL THEREOF - The inventive concept relates to an optical line terminal registering optical network terminals having overlapping serial numbers. The optical line terminal may include a memory storing serial number information of optical network terminals of which a registration is completed in a storage region; and a control part that if a serial number by a serial number request is received from optical network terminals, the received serial number is compared with the serial number information of the memory and if they overlap each other, a previously set preliminary identifier is allocated to the optical network terminal having an overlapping serial number. | 06-26-2014 |
20140270768 | OPTICAL LINE TERMINAL OF PASSIVE OPTICAL NETWORK, AND METHOD FOR CONTROLLING UPSTREAM BAND USING THE SAME - Disclosed are an apparatus and a method capable of adjusting an upstream band for a corresponding ONU by detecting a quantity of bands occupied by a packet, not an effective user packet, among upstream transmission bands for each target object of allocation of each band in the OLT to examine whether a queue report is normal, and detecting an ONU, which transmits an abnormal queue report, according to the examination. An OLT of a PON according to an exemplary embodiment of the present disclosure includes: a frame monitoring unit configured to monitor upstream frame data received for each T-CONT; an error detection unit configured to determine whether a queue report error is generated for each T-CONT according to a result of the monitoring; and a band allocation controller configured to allocate an upstream band for an ONU, in which the queue report error is generated, separately from a normal ONU. | 09-18-2014 |
20150104174 | METHOD OF CONTROLLING OPTICAL NETWORK UNIT (ONU) IN SLEEP MODE - Provided is a method of saving power in a passive optical network (PON) system including an optical line terminal (OLT) and a plurality of optical network units (ONUs), the OLT including an optical transceiver to communicate with at least one ONU through an optical line, and a controller to control the optical transceiver to transmit an upstream bandwidth map to the ONU at a predetermined transmission interval, wherein the transmission interval is determined based on a desired upstream data service delay time. | 04-16-2015 |
20150229389 | APPARATUS AND METHOD FOR DETECTING OPTICAL LINE FAULT IN PASSIVE OPTICAL NETWORK - Disclosed herein is an apparatus and method for detecting an optical line fault in a Passive Optical Network (PON). The apparatus includes an optical distribution unit configured to, when a multiplexed signal of a downstream light signal and a monitoring light signal is input, distribute the multiplexed signal to an Optical Network Unit (ONU) of a first optical path and to a second optical path. An optical layer management unit is installed in the second optical path and is configured to set a time at which the monitoring light signal of the multiplexed signal provided to the second optical path is received to a starting time of monitoring light measurement, compare a monitoring light signal reflected and returned from the ONU with a signal pattern obtained when no fault occurs, and then determine whether a fault has occurred in a distribution network. | 08-13-2015 |
Patent application number | Description | Published |
20150066947 | INDEXING APPARATUS AND METHOD FOR SEARCH OF SECURITY MONITORING DATA - An indexing apparatus and method for search of security monitoring data are provided. The indexing apparatus includes a data collection unit and a data index generation unit. The data collection unit collects data, that is, a basis of search of monitoring information, from a database in which security monitoring data has been stored. The data index generation unit generates file structure-based data in which indices have assigned to multiple search elements of the data collected by the data collection unit. | 03-05-2015 |
20150139539 | APPARATUS AND METHOD FOR DETECTING FORGERY/FALSIFICATION OF HOMEPAGE - An apparatus and method for detecting forgery/falsification of a homepage. The apparatus includes a homepage image shot generation module for generating homepage image shots of an entire screen of an accessed homepage. A character string extraction module extracts character strings from each homepage image shot using an OCR technique. A character string comparison module compares each of the extracted character strings with character strings required for determination of homepage forgery/falsification, thus determining whether the extracted character string is a normal character string or a falsified character string. A homepage falsification determination module determines whether the corresponding homepage has been forged/falsified, based on results of the comparison. A character string learning module learns the character string extracted from the homepage image shot, based on results of the determination, and classifies the character string as the normal character string or the falsified character string. | 05-21-2015 |
20150150132 | INTRUSION DETECTION SYSTEM FALSE POSITIVE DETECTION APPARATUS AND METHOD - Disclosed herein is an Intrusion Detection System (IDS) false positive detection apparatus and method. An IDS false positive detection apparatus includes a payload extraction unit for extracting payloads by dividing each packet corresponding to an IDS detection rule into a header and a payload. A false positive payload information generation unit generates false positive payload information required to identify a false positive payload by extracting a payload of a false positive packet based on results of packet analysis received from a manager. A false positive payload determination unit transmits results of a determination of whether each payload extracted by the payload extraction unit corresponds to a false positive payload, based on the false positive payload information, to the manager. | 05-28-2015 |