-
41.发明专利
公开(公告)号：CA2579502C
公开(公告)日：2014-05-27
申请号：CA2579502
申请日：2005-09-15
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： KIM SUNG-HOON , JI KUM-RAN , LEE JAE-YOUNG , KIM SEUNG-WON , LEE SOO-IN , AHN CHIETEUK
Abstract: Provided is a Vestigial Side Band Digital Television (DTV) transmitter /receiver based on Advanced Television System Committee A/53. The invention provides DTV transmitter/receiver having a dual stream structure through generation of robust data which has a transmission rate a fourth as fast as that of normal data, and a method thereof . The DTV transmitter includes: input means for receiving digital video data stream including normal and robust data; encoding means for performing 1/4 rate coding on the digital video data stream so that one bit can be transmitted through two symbols; and transmitting means for modulating/transmitting output signals of the encoding means. This invention can reduce SNR and satisfy TOV of robust data by performing additional FEC on robust data, transmitting/receiving 1/4 rate coded robust data, which are capable of transmitting one-bit data for two symbols, and improving decoding ability of an equalizer and a trellis decoder of a DTV receiver.
-
公开(公告)号：CA2553753C
公开(公告)日：2013-06-04
申请号：CA2553753
申请日：2004-12-31
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： PARK SUNG-IK , LEE YONG-TAE , EUM HO-MIN , KIM HEUNG-MOOK , SEO JAE-HYUN , KIM SEUNG-WON , LEE SOO-IN
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 on-channel repeater for reducing time delay by configuring and up-sampling a baseband signal, filtering the up-sampled baseband signal with an Equi-Ripple (ER) filter or in a window method, and converting the filtered baseband signal 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 signal 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：CA2564236C
公开(公告)日：2013-04-02
申请号：CA2564236
申请日：2004-12-31
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： SEO JAE-HYUN , LEE YONG-TAE , KIM HEUNG-MOOK , EUM HO-MIN , PARK SUNG-IK , KIM SEUNG-WON , LEE SOO-IN
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.
-
公开(公告)号：CA2561185C
公开(公告)日：2012-05-29
申请号：CA2561185
申请日：2005-04-01
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE JAE-YOUNG , JI KUM-RAN , KIM SUNG-HOON , KIM SEUNG-WON , LEE SOO-IN , AHN CHIETEUK
IPC: H04N7/015
Abstract: Provided are a Vestigial Side Band (VSB) Digital Television (DTV) transmitter and receiver based on the Advanced Television System Committee (ATSC) A/53, and a method thereof. The present invention provides 8-VSB DTV transmitter and receiver that can improve reception performance of the receiver by transmitting and receiving robust data mixed with P-2VSB, E-4VSB, and/or E-8VSB. The DTV transmitter includes an input means for receiving a digital video data stream including normal data and robust data; an encoding means for coding the digital video data stream into data symbols; and a transmitting means for modulating and transmitting an output signal of the encoding means, wherein the encoding means performs trellis coding on the robust data by sequentially applying a plurality of trellis coding methods.
-
公开(公告)号：DE60334504D1
公开(公告)日：2010-11-18
申请号：DE60334504
申请日：2003-12-30
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： YUN KUG-JIN , AHN CHUNG-HYUN , KANG HOON-JONG , HUR NAM-HO , CHO SUK-HEE , LEE SOO-IN
-
Patent Agency Ranking
公开(公告)号：CA2668058A1
公开(公告)日：2008-05-08
申请号：CA2668058
申请日：2007-10-12
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LIM JONG-SOO , PARK SUNG-IK , LEE SOO-IN , LEE JAE-YOUNG , KIM HEUNG-MOOK , EUM HO-MIN , SEO JAE-HYUN
IPC: H04B7/14
Abstract: Provided is an apparatus and method for analyzing identification (ID) sig nals by converting radio frequency (RF) signals which are transmitted with a n ID signal added thereto by a transmitting part, e.g., a plurality of trans mitters or repeaters, into signals of a desired band; creating ID signals th at are identical to the ID signals added to the RF signals; calculating corr elation values between the converted signals and the created ID signals base d on partial correlation; and extracting channel profile of multi-path signa ls caused by a channel between the transmitting part and the ID signal analy zing apparatus from the correlation value. The technology of the present res earch is applied to broadcasting and communication.
-
公开(公告)号：MXPA06013060A
公开(公告)日：2007-02-14
申请号：MXPA06013060
申请日：2004-12-31
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： SEO JAE-HYUN , PARK SUNG-IK , LEE YONG-TAE , KIM HEUNG-MOOK , EUM HO-MIN , KIM SEUNG-WON , LEE SOO-IN
Abstract: Se proporcionan un repetidor de canal activo y un metodo del mismo. El repetidor recibe las senales en un canal y distribuye las senales en el mismo canal mediante convertir las senales RF desde un transmisor principal en las senales de banda base; ecualizandolas en un ecualizador de alto rendimiento, agregando un identificador del repetidor a ellas, modulando las senales de banda base con el identificador del repetidor en las senales RF. El repetidor incluye: un receptor para recibir las senales RF; un demodulador para demodular las senales RF en las senales de banda base, un ecualizador para ecualizar las senales de banda base; un agregador para agregar un identificador del repetidor a las senales de banda base, un modulador para modular las senales de banda base con el identificador del repetidor agregado en el agregador en base senales RF y un transmisor para transmitir las senales RF moduladas en el modulador. La tecnologia de la presente invencion se usa para formar una red de repeticion de canal activo en un sistema de transmision arbitrario incluyendo un sistema de transmision de television digital.
-
公开(公告)号：CA2561183A1
公开(公告)日：2006-12-01
申请号：CA2561183
申请日：2005-04-01
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE SOO-IN , AHN CHIETEUK , JI KUM-RAN , KIM SUNG-HOON , LEE JAE-YOUNG , KIM SEUNG-WON
IPC: H04N7/015
Abstract: Provided are a Vestigial Side Band (VSB) Digital Television (DTV) transmitte r and receiver based on the Advanced Television System Committee (ATSC) A/53, and a method thereof. The present invention provides 8-VSB DTV transmitter a nd receiver that can improve reception performance of the receiver by transmitting and double streams formed of normal data and robust data withou t increasing an average power level, regardless of the ratio of the normal dat a and robust data, by including an encoding unit for performing 16-state trell is coding on the robust data when a data stream includes robust data, and a method thereof.
-
49.发明专利
公开(公告)号：CA2597706A1
公开(公告)日：2006-08-24
申请号：CA2597706
申请日：2006-02-16
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： PARK HYUN-CHEOL , KIM JAE-BUM , LEE SOO-IN , AHN CHIE-TEUK , JI KUM-RAN , KIM SUNG-HOON , LEE JAE-YOUNG , KIM SEUNG-WON
Abstract: Provided is an error correcting encoder and, more particularly, to an error correcting encoder used for an improved transmission method of the Advanced Television System Committee (ATSC), and a method thereof. The error correcting encoder for digital television broadcasting, which is suggested in the present research, includes a robust encoder for encoding a one-bit input into robust encoded data; a pre-coding block for receiving the robust encoded data and performing pre-coding to thereby produce a pre-coded signal; and a trellis encoding block for performing trellis encoding on the robust encoded data and the pre-coded signal.
-
公开(公告)号：CA2561185A1
公开(公告)日：2006-01-12
申请号：CA2561185
申请日：2005-04-01
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： KIM SUNG-HOON , LEE SOO-IN , KIM SEUNG-WON , AHN CHIETEUK , JI KUM-RAN , LEE JAE-YOUNG
IPC: H04N7/015
Abstract: Provided are a Vestigial Side Band (VSB) Digital Television (DTV) transmitte r and receiver based on the Advanced Television System Committee (ATSC) A/53, and a method thereof. The present invention provides 8-VSB DTV transmitter a nd receiver that can improve reception performance of the receiver by transmitting and receiving robust data mixed with P-2VSB, E-4 VSB, and/or E- 8 VSB. The DTV transmitter includes an input means for receiving a digital vid eo data stream including normal data and robust data; an encoding means for coding the digital video data stream into data symbols; and a transmitting means for modulating and transmitting an output signal of the encoding means , wherein the encoding means performs trellis coding on the robust data by mixing and using a plurality of methods.
-
-
-
-
-
-
-
-
-
Search Results
133
records
(took 0.03 seconds)
