公开(公告)号：CA2553753A1

公开(公告)日：2005-07-28

申请号：CA2553753

申请日：2004-12-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： SEO JAE-HYUN ,  KIM HEUNG-MOOK ,  KIM SEUNG-WON ,  LEE SOO-IN ,  EUM HO-MIN ,  LEE YONG-TAE ,  PARK SUNG-IK

IPC: H04N7/015 ,  H04B7/155 ,  H04N5/40

Abstract: Provided is a modulating apparatus and method of an on-channel repeater. An object of the present invention is to provide a modulating apparatus of an o n- channel repeater for reducing time delay by configuring and up-sampling a baseband signal, filtering the up-sampled baseband signal with an Equi-Rippl e (ER) filter or in a window method, and converting the filtered baseband sign al into an RF signal. The modulating apparatus includes: a baseband signal configuring unit for configuring a baseband. signal by combining an input field and a segment sync signal; a pilot adding unit for adding a pilot sign al to the baseband signal; a filtering unit for filtering the baseband signal with the pilot signal; and an RF up-converting unit for up-converting the filtered signal into an RF signal. The present invention is used to form an on- channel repeating network in a transmitting system including a digital TV broadcasting system.

公开(公告)号：CA2534435A1

公开(公告)日：2005-03-03

申请号：CA2534435

申请日：2003-12-30

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SO-RA ,  JEONG YOUNG-HO ,  LEE HYUN ,  LEE BONG-HO ,  LEE SOO-IN ,  HAHM YOUNG-KWON

IPC: H04H1/00 ,  H04H20/71 ,  H04H20/95 ,  H04H60/07 ,  H04N5/38 ,  H04N7/24 ,  H04N7/52

Abstract: Provided is a digital multimedia broadcasting (DMB) system that can provide a multimedia data broadcasting service having an excellent reception quality, a method thereof, and a computer-readable recording medium for recording a program that implements the method. The DMB system includes an encoding unit for encoding an inputted audio/video signal; a synchronizing unit for synchronizing media stream, additional data, interactive service objectifyin g data that are outputted from the encoding unit; a multiplexing unit for multiplexing the media stream outputted from the synchronizing unit; an erro r correction encoding unit for performing additional error correction encoding on the media stream outputted from the multiplexing unit; an interleaving un it for removing temporal correlation between adjacent byte units within a data stream outputted from the error correction encoding unit; and a transmitting unit for transmitting a DMB media stream outputted from the interleaving uni t to the conventional DAB system and other digital broadcasting systems.

公开(公告)号：AU2003285812A1

公开(公告)日：2004-12-13

申请号：AU2003285812

申请日：2003-12-27

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE SOO-IN ,  PARK SUNG-IK ,  LEE YONG-TAE ,  KIM SEUNG-WON

IPC: H04N7/015 ,  H04H20/00 ,  H04H20/06 ,  H04N5/21 ,  H04N5/40 ,  H04N5/44 ,  H04N5/455

Abstract: A repeater and method for an ATSC terrestrial digital TV broadcasting service. The on-channel repeater includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal from a main transmitter; a frequency downlink converting unit for converting the received RF broadcast signal into an intermediate frequency (IF) signal; a demodulating unit for converting the converted IF signal into a baseband signal; an equalizing unit for removing noise and multi-path signals generated from the converted baseband signal; a modulating unit for converting the baseband signal into an IF signal; a frequency uplink converting unit for converting the IF signal into a RF broadcast signal; a high power amplifying unit for amplifying and repeating the converted RF broadcast signal; a transmitting unit for transmitting the RF broadcast signal outputted from the high power amplifying unit; and a signal synchronizing unit for generating the first reference frequency, and generating the second reference frequency based on the first reference frequency such that the transmission/reception signal are frequency-and-phase synchronized.

公开(公告)号：AU2003224465A1

公开(公告)日：2004-05-04

申请号：AU2003224465

申请日：2003-04-24

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： AHN CHIETEUK ,  LEE BONG-HO ,  LEE HYUN ,  LEE SOO-IN

IPC: G10L13/04 ,  G10L15/26 ,  H04N5/445

Abstract: Disclosed is a system for providing an electronic program guide and a method of providing the same, the electronic program guide (EPG) being about a plurality of programs supplied through a digital broadcasting system, including the steps of receiving service information transmitted from the digital broadcasting system, and extracting the EPG information from the service information to store the EPG information; analyzing a user's request and extracting EPG information that meets the user's request from the stored EPG information to produce tailored EPG information; converting the tailored EPG information into speech EPG information; and reproducing the speech EPG information as speech to provide users with the EPG information.

公开(公告)号：CA2668058C

公开(公告)日：2016-03-29

申请号：CA2668058

申请日：2007-10-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG-IK ,  LEE JAE-YOUNG ,  SEO JAE-HYUN ,  EUM HO-MIN ,  KIM HEUNG-MOOK ,  LIM JONG-SOO ,  LEE SOO-IN

IPC: H04B7/14

Abstract: Provided is an apparatus and method for analyzing identification (ID) signals by converting radio frequency (RF) signals which are transmitted with an ID signal added thereto by a transmitting part, e.g., a plurality of transmitters or repeaters, into signals of a desired band; creating ID signals that are identical to the ID signals added to the RF signals; calculating correlation values between the converted signals and the created ID signals based on partial correlation; and extracting channel profile of multi-path signals caused by a channel between the transmitting part and the ID signal analyzing apparatus from the correlation value. The technology of the present research is applied to broadcasting and communication.

公开(公告)号：CA2726022A1

公开(公告)日：2009-12-03

申请号：CA2726022

申请日：2009-05-29

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG-IK ,  LIM HYOUNGSOO ,  KIM HEUNG-MOOK ,  LEE SOO-IN

IPC: H04N7/08

Abstract: A method and apparatus for transmitting/receiving broadcasting-communication data is provided. The apparatus includes: an original signal generator configured to receive the original data and generate baseband original signals; a first modulator configured to receive the baseband additional signals and generate original signals of a predetermined band; an additional signal generator configured to receive the additional data and generate baseband additional signals; a second modulator configured to receive the baseband additional signals and generate additional signals of a predetermined band; an average power controller configured to control an average power of the additional signals of the predetermined band; an inserter configured to insert the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and a transmitter configured to transmit the mixed signals of the predetermined band.

公开(公告)号：DE112007002220T5

公开(公告)日：2009-07-30

申请号：DE112007002220

申请日：2007-09-21

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： JEONG YOUNG-HO ,  KIM HYUN-GON ,  KIM SOON-CHOUL ,  CHO SAM-MO ,  KIM GEON ,  AHN CHUNG-HYUN ,  LEE SOO-IN

IPC: H04N7/08

Abstract: There is provided a method for processing a TPEG-based application service, including the steps of: receiving a TPEG-based broadcasting stream related to RFID application information through a broadcasting communication network; parsing the received broadcasting stream and extracting frames having no errors; analyzing characteristics (application IDs) of service components of the extracted frames to classify the extracted frames into RFID application data, LOC data, and SNI data by corresponding services; storing the classified RFID application data, LOC data, and SNI data in corresponding storage areas; searching RFID application related data of a corresponding service from a corresponding storing area in response to a RFID application service request from a user; and outputting the searched corresponding RFID application related data.

公开(公告)号：MX2007003049A

公开(公告)日：2007-08-02

申请号：MX2007003049

申请日：2005-09-15

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM SEUNG-WON ,  LEE SOO-IN ,  KIM SUNG-HOON ,  JI KUM-RAN ,  LEE JAE-YOUNG ,  CHIETEUK AHN

IPC: H04N5/00 ,  H04N7/24

Abstract: Se proporciona un transmisor/receptor de Television, Digital de Banda Lateral Residual (DTV) con base en el Comite del Sistema de Television Avanzado A/53. la invencion proporciona el transmisor/receptor DTV que tiene una estructura de flujo dual a traves de la generacion de datos robustos que tienen una proporcion de transmision de un cuarto tan rapido como la de los datos normales y un metodo para la misma. El transmisor DTV incluye medios de entrada para recibir el flujo de datos de video digital que incluye datos robustos y datos normales, medios de codificacion para realizar la codificacion de 1/4 de proporcion en el flujo de datos de video digitales de manera que un bit puede transmitirse a traves de dos simbolos y medios de transmision para modular/transmitir las senales de salida de los medios de codificacion. Esta invencion puede reducir el SNR y satisfacer el TOV de los datos robustos mediante realizar el FEC adicional de los datos robustos, transmitiendo/recibiendo los datos robustos 1/4 de proporcion codificados, que son capaces de transmitir datos de un bit para dos simbolos y mejorando la habilidad de decodificacion de un ecualizador y un decodificador trellis de un receptor DTV.

公开(公告)号：DE10394289T5

公开(公告)日：2007-07-05

申请号：DE10394289

申请日：2003-12-30

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BAE BYUNG-JUN ,  LEE JIN-HWAN ,  LEE YONG-HOON ,  CHO SAM-MO ,  JEONG YOUNG-HO ,  HAHM YOUNG-KWON ,  LEE SOO-IN

IPC: H04H20/86 ,  H04H20/95 ,  H04H60/07 ,  H04N7/24

公开(公告)号：MXPA06008226A

公开(公告)日：2007-04-16

申请号：MXPA06008226

申请日：2004-12-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE YONG-TAE ,  KIM SEUNG-WON ,  EUM HO-MIN ,  SEO JAE-HYUN ,  LEE SOO-IN ,  PARK SUNG-IK ,  KIM HEUNG-MOOK

IPC: H04N7/00 ,  H04N7/015 ,  H04B7/155 ,  H04N5/40

Abstract: Se proporcionan un aparato y metodo de modulacion de un repetidor en canal. Un objeto de la presente invencion es proporcionar un aparato de modulacion de un repetidor en canal para reducir el retardo de tiempo al configurar y muestrear ascendentemente una senal de banda base, filtrar la senal de banda base muestreada ascendentemente con un filtro de Equi-Ondulacion (ER) o en un metodo de ventana, y convertir la senal de banda base filtrada en una senal de RF. El aparato de modulacion incluye: una unidad de configuracion de senal de banda base para configurar una senal de banda base al configurar un campo de entrada y una senal de sincronizacion de segmento; una unidad de adicion de piloto para agregar una senal piloto a la senal de banda base; una unidad de filtracion para filtrar la senal de banda base con la senal piloto; y una unidad de conversion ascendente de RF para convertir ascendentemente la senal filtrada en una senal de RF. La presente invencion se utiliza para formar una red de repeticion en canal en un sistema de transmision que incluye un sistema de difusion de TV digital.