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    APARATO REPETIDOR EN CANAL Y METODO PARA EL SERVICIO DE TRANSMISION DE TELEVISION DIGITAL TERRESTRE.
    71.
    发明专利
    APARATO REPETIDOR EN CANAL Y METODO PARA EL SERVICIO DE TRANSMISION DE TELEVISION DIGITAL TERRESTRE. 未知

    公开(公告)号：MXPA05012578A

    公开(公告)日：2007-03-08

    申请号：MXPA05012578

    申请日：2003-12-27

    Applicant: KOREA ELECTRONICS TELECOMM

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

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

    Abstract: Se describe un repetidor y metodo para un servicio de servicio de difusion de TV digital terrestre de ATSC. El repetidor de canal activo incluye: una unidad de recepcion para recibir una senal de difusion de Radiofrecuencia (FR) desde un trasmisor principal; una unidad de conversion de enlace descendente de frecuencia para convertir la senal de difusion de RF recibida en una senal de frecuencia intermedia (IF); una unidad de desmodulacion para convertir la senal de IF convertida en una senal de banda base; una unidad de ecualizacion para remover una cierta senal innecesaria generada a partir de la senal de banda base convertida; una unidad de modulacion para convertir la senal de banda base en una senal de IF; una unidad de conversion de enlace ascendente de frecuencia para convertir la senal de IF en una senal de difusion de RF; una unidad de amplificacion de alta potencia para amplificar y repetir la senal de difusion de RF convertida; una unidad de transmision para transmitir la senal de difusion de RF producida de la unidad de amplificacion de alta potencia; y una unidad de sincronizacion de senal para generar la primera frecuencia de referencia, y generar la segunda frecuencia de referencia en la base de la primera frecuencia de referencia de manera que la senal de transmision/recepcion se sincronizan por frecuencia y fase.

    TRANSMISOR Y RECEPTOR DE TELEVISION DIGITAL PARA USAR UNA CODIFICACION TRELLIS DE 16 ESTADOS.
    72.
    发明专利
    TRANSMISOR Y RECEPTOR DE TELEVISION DIGITAL PARA USAR UNA CODIFICACION TRELLIS DE 16 ESTADOS. 未知

    公开(公告)号：MXPA06011267A

    公开(公告)日：2007-01-26

    申请号：MXPA06011267

    申请日：2005-04-01

    Applicant: KOREA ELECTRONICS TELECOMM

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

    IPC: H04N7/015 ,  H04N11/24

    Abstract: Se proporcionan un transmisor y un receptor de Television Digital (DTV) de Banda Lateral Residual (VSB) basados en el A/53 del Comite de Sistema de Television Avanzado (ATSC) y un metodo para los mismos. La presente invencion proporciona un transmisor y un receptor DTV de 8-VSB que puede mejorar el funcionamiento de la recepcion del receptor mediante transmitir y recibir flujos dobles formados de datos normales y datos robustos sin incrementar un nivel de energia promedio, sin importar la proporcion de los datos normales y los datos robustos, mediante incluir una unidad de codificacion para realizar la codificacion trellis de 16 estados codificando los datos robustos cuando un flujo de datos incluye datos y un metodo para los mismos.

    APPARATUS AND METHOD FOR RECEIVING DIGITAL TELEVISION SIGNALWITH BACKWARD COMPATIBILITY BYTE
    74.
    发明专利
    APPARATUS AND METHOD FOR RECEIVING DIGITAL TELEVISION SIGNALWITH BACKWARD COMPATIBILITY BYTE 未知

    公开(公告)号：CA2561182A1

    公开(公告)日：2006-01-12

    申请号：CA2561182

    申请日：2005-04-01

    Applicant: KOREA ELECTRONICS TELECOMM

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

    IPC: H04N7/12

    Abstract: Provided are a Vestigial Side Band (VSB) digital television (DTV) receiver based on is A/53 of the Advanced Television System Committee (ATSC) that can secure backward compatibility of a low-ranked DTV receiver by using parity bytes added to robust data for error correction and obtain RS coding gain fr om the robust data, and a method thereof. The DTV receiver includes: a receivin g unit for receiving a transmission signal including general data and robust data and converting the transmission signal into a base-band signal; an equalizer for determining a symbol level of the transmission signal; a trell is decoder for performing trellis decoding on a symbol of the determined level; a nonsystematic Reed Solomon (NRS) decoder for performing NRS decoding on the trellis-decoded robust data and correcting an error; and a restoring unit fo r restoring a digital video data stream with respect to the trellis-decoded general data and the NRS-decoded robust data.

    APPARATUS AND METHOD OF ON-CHANNEL REPEATER
    75.
    发明专利
    APPARATUS AND METHOD OF ON-CHANNEL REPEATER 未知

    公开(公告)号：CA2564236A1

    公开(公告)日：2005-11-17

    申请号：CA2564236

    申请日：2004-12-31

    Applicant: KOREA ELECTRONICS TELECOMM

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

    IPC: H04N7/015 ,  H04B7/155 ,  H04L25/03 ,  H04L25/24 ,  H04N5/21 ,  H04N5/38

    Abstract: Provided are an on-channel repeater and a method thereof. The repeater receives signals on one channel and distributes the signals on the same channel by converting RF signals from a main transmitter into baseband signals; equalizing them in a high-performance equalizer; adding a repeater identifier to them; modulating the baseband signals with the repeater identifier into RF signals. The repeater includes: a receiver for receiving RF signals; a demodulator for demodulating the RF signals into baseband signals ; an equalizer for equalizing the baseband signals; an adder for adding a repeater identifier to the baseband signals; a modulator for modulating the baseband signals with the repeater identifier added in the adder into RF signals; and a transmitter for transmitting the RF signals modulated in the modulator. The technology of the present invention is used to form an on- channel repeating network in an arbitrary transmission system including a digital television broadcasting system.

    Apparatus and method for processing 3d video based on mpeg-4 object descriptor information
    76.
    发明专利
    Apparatus and method for processing 3d video based on mpeg-4 object descriptor information 未知

    公开(公告)号：AU2003289588A1

    公开(公告)日：2005-06-29

    申请号：AU2003289588

    申请日：2003-12-30

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： YUN KUG-JIN ,  CHO SUK-HEE ,  AHN CHUNG-HYUN ,  LEE SOO-IN

    IPC: H04N7/24

    Abstract: The present invention relates to three-dimensional video processing apparatus and method using MPEG-4 object descriptor information and structures. The three-dimensional video processing apparatus and method that can support a three-dimensional video service smoothly to thereby provide a sense of reality and a cubic effect in an MPEG-4-based system by suggesting a three-dimensional video object descriptor structure and providing to a client an object descriptor, which includes information on kind of three-dimensional video, number of viewpoints, number of media streams and a plurality of display methods; and a method thereof.

    ON-CHANNEL REPEATING APPARATUS AND METHOD FOR TERRESTRIAL DIGITAL TELEVISION BROADCASTING SERVICE
    78.
    发明专利
    ON-CHANNEL REPEATING APPARATUS AND METHOD FOR TERRESTRIAL DIGITAL TELEVISION BROADCASTING SERVICE 未知

    公开(公告)号：CA2454295A1

    公开(公告)日：2004-11-20

    申请号：CA2454295

    申请日：2003-12-29

    Applicant: KOREA ELECTRONICS TELECOMM

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

    IPC: H04N7/015 ,  H04H20/00 ,  H04H20/06 ,  H04N5/21 ,  H04N5/40 ,  H04N5/44 ,  H04N5/455 ,  H04N5/00 ,  H04H1/00 ,  H04B7/005

    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.

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