NO923788D0 - Sending og mottaking i omgivelser med sterke forstyrrelser - Google Patents

Sending og mottaking i omgivelser med sterke forstyrrelser

Info

Publication number
NO923788D0
NO923788D0 NO1992923788A NO923788A NO923788D0 NO 923788 D0 NO923788 D0 NO 923788D0 NO 1992923788 A NO1992923788 A NO 1992923788A NO 923788 A NO923788 A NO 923788A NO 923788 D0 NO923788 D0 NO 923788D0
Authority
NO
Norway
Prior art keywords
interference
receiver
ofdm
pct
carriers
Prior art date
Application number
NO1992923788A
Other languages
English (en)
Other versions
NO923788L (no
NO180789C (no
NO180789B (no
Inventor
Arthur Gordon Mason
Jeffrey John Gledhill
Original Assignee
Nat Transcommunications Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27265019&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO923788(D0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB909007141A external-priority patent/GB9007141D0/en
Priority claimed from GB909020170A external-priority patent/GB9020170D0/en
Application filed by Nat Transcommunications Ltd filed Critical Nat Transcommunications Ltd
Publication of NO923788D0 publication Critical patent/NO923788D0/no
Publication of NO923788L publication Critical patent/NO923788L/no
Publication of NO180789B publication Critical patent/NO180789B/no
Publication of NO180789C publication Critical patent/NO180789C/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/0803—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division using frequency interleaving, e.g. with precision offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
  • Television Systems (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Telephone Function (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Information Transfer Between Computers (AREA)
  • Details Of Television Systems (AREA)
NO923788A 1990-03-30 1992-09-29 Sending og mottaking i omgivelser med sterke forstyrrelser NO180789C (no)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB909007141A GB9007141D0 (en) 1990-03-30 1990-03-30 Broadcasting data
GB909020169A GB9020169D0 (en) 1990-03-30 1990-09-14 Broadcasting in a hostile environment
GB909020170A GB9020170D0 (en) 1990-09-14 1990-09-14 Orthogonal frequency division multiplexing
PCT/GB1991/000513 WO1991015925A1 (en) 1990-03-30 1991-04-02 Transmission and reception in a hostile interference environment

Publications (4)

Publication Number Publication Date
NO923788D0 true NO923788D0 (no) 1992-09-29
NO923788L NO923788L (no) 1992-11-27
NO180789B NO180789B (no) 1997-03-10
NO180789C NO180789C (no) 1997-06-18

Family

ID=27265019

Family Applications (1)

Application Number Title Priority Date Filing Date
NO923788A NO180789C (no) 1990-03-30 1992-09-29 Sending og mottaking i omgivelser med sterke forstyrrelser

Country Status (12)

Country Link
US (1) US5488632A (no)
EP (1) EP0521995B1 (no)
JP (1) JPH05505290A (no)
KR (1) KR100186803B1 (no)
AT (1) ATE139660T1 (no)
AU (1) AU651818B2 (no)
CA (1) CA2078445A1 (no)
DE (1) DE69120401T2 (no)
FI (1) FI924373A (no)
HK (1) HK1004312A1 (no)
NO (1) NO180789C (no)
WO (1) WO1991015925A1 (no)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5291289A (en) * 1990-11-16 1994-03-01 North American Philips Corporation Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation
US5287180A (en) * 1991-02-04 1994-02-15 General Electric Company Modulator/demodulater for compatible high definition television system
DE69330946D1 (de) * 1992-01-08 2001-11-22 Broadband Innovations Inc Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren
EP0589683B1 (en) * 1992-09-24 1999-06-09 Canon Kabushiki Kaisha Method for frequency comb spread spectrum modulation
FR2707064B1 (no) * 1993-06-21 1996-03-08 France Telecom
GB9313987D0 (en) * 1993-07-07 1993-08-18 British Broadcasting Corp Imrpovements in signal transmission systems
US5572264A (en) 1994-02-14 1996-11-05 Hitachi, Ltd. High definition TV signal receiver
JP3371506B2 (ja) * 1994-02-14 2003-01-27 株式会社日立製作所 受信装置
US5666382A (en) * 1994-02-28 1997-09-09 Abb Daimler-Benz Transportation (North America) Inc. Method and apparatus for communicating in the presence of power and propulsion system interference
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US6282683B1 (en) * 1994-09-26 2001-08-28 Adc Telecommunications, Inc. Communication system with multicarrier telephony transport
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
FR2734109B1 (fr) * 1995-05-10 1997-07-18 France Telecom Signal numerique multiporteuse limitant les brouillages cocanaux avec un signal de television analogique, et reception d'un tel signal
GB9510127D0 (en) * 1995-05-20 1995-08-02 West End System Corp CATV Data transmission system
DE19601161A1 (de) * 1995-05-27 1996-11-28 Deutsche Telekom Ag Verfahren zur Übertragung von Zusatzinformationen in TV-Kanälen
JPH08331095A (ja) * 1995-05-31 1996-12-13 Sony Corp 通信システム
US6035000A (en) * 1996-04-19 2000-03-07 Amati Communications Corporation Mitigating radio frequency interference in multi-carrier transmission systems
US6014412A (en) * 1996-04-19 2000-01-11 Amati Communications Corporation Digital radio frequency interference canceller
US6055307A (en) * 1996-06-28 2000-04-25 At&T Corp. System and method for selecting agent destinations and monitoring calls made to network customers
EP0854619A1 (en) * 1997-01-15 1998-07-22 Alcatel Method to allocate data bits, multicarrier transmitter and receiver using the method, and related allocation message generator
US7548787B2 (en) * 2005-08-03 2009-06-16 Kamilo Feher Medical diagnostic and communication system
US6246729B1 (en) 1998-09-08 2001-06-12 Northrop Grumman Corporation Method and apparatus for decoding a phase encoded data signal
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
US6269132B1 (en) 1999-04-26 2001-07-31 Intellon Corporation Windowing function for maintaining orthogonality of channels in the reception of OFDM symbols
US6074086A (en) * 1999-04-26 2000-06-13 Intellon Corporation Synchronization of OFDM signals with improved windowing
US6505037B1 (en) * 1999-06-29 2003-01-07 Sharp Laboratories Of America, Inc. Data unit detection including antenna diversity
US6859504B1 (en) 1999-06-29 2005-02-22 Sharp Laboratories Of America, Inc. Rapid settling automatic gain control with minimal signal distortion
US6278685B1 (en) 1999-08-19 2001-08-21 Intellon Corporation Robust transmission mode
US6442129B1 (en) * 1999-12-06 2002-08-27 Intellon Corporation Enhanced channel estimation
CA2344014A1 (en) 2000-04-12 2001-10-12 Yiyan Wu Method and system for broadcasting a digital data signal within an analog tv signal using orthogonal frequency division multiplexing
US6289000B1 (en) 2000-05-19 2001-09-11 Intellon Corporation Frame control encoder/decoder for robust OFDM frame transmissions
JP2001339320A (ja) * 2000-05-25 2001-12-07 Sony Corp 干渉波除去回路とデジタルテレビ受信機
JP2001358692A (ja) * 2000-06-14 2001-12-26 Nec Corp 直交周波数分割多重変復調回路
EP1164762A1 (de) * 2000-06-16 2001-12-19 Abb Research Ltd. Breitbandmodulationsverfahren
US7298691B1 (en) 2000-08-04 2007-11-20 Intellon Corporation Method and protocol to adapt each unique connection in a multi-node network to a maximum data rate
US6909723B1 (en) 2000-08-04 2005-06-21 Intellon Corporation Segment bursting with priority pre-emption and reduced latency
US7352770B1 (en) * 2000-08-04 2008-04-01 Intellon Corporation Media access control protocol with priority and contention-free intervals
US7469297B1 (en) 2000-08-04 2008-12-23 Intellon Corporation Mechanism for using a quasi-addressed response to bind to a message requesting the response
US6987770B1 (en) 2000-08-04 2006-01-17 Intellon Corporation Frame forwarding in an adaptive network
US6907044B1 (en) 2000-08-04 2005-06-14 Intellon Corporation Method and protocol to support contention-free intervals and QoS in a CSMA network
FR2814302B1 (fr) 2000-09-20 2003-02-07 France Telecom Signal multiporteuse a pilotes repartis concu pour limiter l'interference, procede de construction d'un signal, procede de reception, recepteur et dispositif d'emission correspondants
FR2814303A1 (fr) 2000-09-20 2002-03-22 France Telecom Signal multiporteuse a symbole de reference concu pour limiter l'interference, procede de reception, procede de construction, recepteur et dispositif correspondants
US7107996B2 (en) * 2001-04-10 2006-09-19 Ganz Robert A Apparatus and method for treating atherosclerotic vascular disease through light sterilization
US6975583B2 (en) * 2001-05-14 2005-12-13 Intel Corporation Technique for continuous OFDM modulation
US7020218B2 (en) * 2001-06-18 2006-03-28 Arnesen David M Sliding-window transform with integrated windowing
FR2826223A1 (fr) * 2001-06-19 2002-12-20 Koninkl Philips Electronics Nv Dispositif de reemission insofrequence d'un signal de television numerique terrestre
AT412249B (de) * 2001-08-30 2004-11-25 Frequentis Nachrichtentechnik Gmbh Verfahren und anordnung der übertragung von sprache und/oder daten
US7855948B2 (en) * 2001-09-05 2010-12-21 Cisco Technology, Inc. Interference mitigation in a wireless communication system
US6990059B1 (en) 2001-09-05 2006-01-24 Cisco Technology, Inc. Interference mitigation in a wireless communication system
US7826466B2 (en) * 2002-06-26 2010-11-02 Atheros Communications, Inc. Communication buffer scheme optimized for VoIP, QoS and data networking over a power line
US7120847B2 (en) * 2002-06-26 2006-10-10 Intellon Corporation Powerline network flood control restriction
US8149703B2 (en) * 2002-06-26 2012-04-03 Qualcomm Atheros, Inc. Powerline network bridging congestion control
US7227835B2 (en) * 2002-06-27 2007-06-05 Thomson Licensing Method and apparatus for adjacent channel interference reduction in an orthogonal frequency division multiplexing (OFDM) receiver
US7623542B2 (en) 2002-10-21 2009-11-24 Intellon Corporation Contention-free access intervals on a CSMA network
KR20040044267A (ko) * 2002-11-20 2004-05-28 삼성전자주식회사 직교 주파수 분할 다중 접속방식 시스템에 있어서 측부엽억제신호 발생장치 및 이를 채용하는 상향링크 통신장치
KR20050115236A (ko) * 2003-02-14 2005-12-07 포커스 인핸스먼츠, 인코포레이티드 주파수 분할 다중화 장치 및 방법
US7539123B2 (en) * 2003-06-27 2009-05-26 Intel Corporation Subcarrier puncturing in communication systems
KR100498953B1 (ko) * 2003-07-08 2005-07-04 삼성전자주식회사 불충분한 주기적 프리픽스를 사용하는 직교 주파수 분할다중화 시스템을 위한 송수신 장치 및 방법
US7281187B2 (en) 2003-11-20 2007-10-09 Intellon Corporation Using error checking bits to communicated an address or other bits
US8090857B2 (en) 2003-11-24 2012-01-03 Qualcomm Atheros, Inc. Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks
US7660327B2 (en) * 2004-02-03 2010-02-09 Atheros Communications, Inc. Temporary priority promotion for network communications in which access to a shared medium depends on a priority level
US7715425B2 (en) * 2004-02-26 2010-05-11 Atheros Communications, Inc. Channel adaptation synchronized to periodically varying channel
US7251577B2 (en) * 2004-07-19 2007-07-31 Tektronix, Inc. Realtime power mask trigger
CN101048943A (zh) * 2004-08-27 2007-10-03 皇家飞利浦电子股份有限公司 用于系统内和系统间的滑动中频收发方法和设备
US7636370B2 (en) * 2005-03-03 2009-12-22 Intellon Corporation Reserving time periods for communication on power line networks
US9042461B2 (en) * 2005-03-10 2015-05-26 Qualcomm Incorporated Efficient employment of digital upsampling using IFFT in OFDM systems for simpler analog filtering
US8769046B2 (en) * 2005-03-23 2014-07-01 Qualcomm Incorporated Methods and apparatus for using multiple wireless links with a wireless terminal
US7590183B2 (en) * 2005-05-12 2009-09-15 Intellon Corporation Generating signals for transmission of information
EP1739908A1 (en) * 2005-06-30 2007-01-03 STMicroelectronics N.V. Method and apparatus for reducing the interferences between a wide band device and a narrow band interferer
US8175190B2 (en) 2005-07-27 2012-05-08 Qualcomm Atheros, Inc. Managing spectra of modulated signals in a communication network
US7822059B2 (en) 2005-07-27 2010-10-26 Atheros Communications, Inc. Managing contention-free time allocations in a network
WO2008141165A1 (en) * 2007-05-10 2008-11-20 Intellon Corporation Managing distributed access to a shared medium
US9282274B2 (en) * 2009-06-22 2016-03-08 Entropic Communications, Llc System and method for reducing intra-channel interference
JP5678171B2 (ja) 2010-04-12 2015-02-25 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ ネットワークにおける低オーバーヘッド通信のためのチャネル推定
KR101222666B1 (ko) 2010-06-01 2013-01-17 한국전자통신연구원 인접 채널간 간섭 억제를 위한 데이터 전송 방법
CN102137051B (zh) * 2011-03-10 2013-03-20 上海交通大学 用于无线传感器网络的干扰检测方法及其检测装置
US8891605B2 (en) 2013-03-13 2014-11-18 Qualcomm Incorporated Variable line cycle adaptation for powerline communications
US11202113B2 (en) * 2013-08-22 2021-12-14 Interdigital Ce Patent Holdings Low adjacent channel interference mode for a digital television system
US9819446B2 (en) 2014-10-29 2017-11-14 FreeWave Technologies, Inc. Dynamic and flexible channel selection in a wireless communication system
US10033511B2 (en) 2014-10-29 2018-07-24 FreeWave Technologies, Inc. Synchronization of co-located radios in a dynamic time division duplex system for interference mitigation
US9787354B2 (en) * 2014-10-29 2017-10-10 FreeWave Technologies, Inc. Pre-distortion of receive signal for interference mitigation in broadband transceivers
US10149263B2 (en) 2014-10-29 2018-12-04 FreeWave Technologies, Inc. Techniques for transmitting/receiving portions of received signal to identify preamble portion and to determine signal-distorting characteristics
US9584170B2 (en) 2014-10-29 2017-02-28 FreeWave Technologies, Inc. Broadband superhetrodyne receiver with agile intermediate frequency for interference mitigation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609228B1 (fr) * 1986-12-24 1989-12-01 France Etat Procede de diffusion numerique dans des canaux de television
IT1211612B (it) * 1987-12-22 1989-11-03 Esercizio Delle Telecomunicazi Procedimento e dispositivo di decodifica con rivelazione di cancellature per sistemi di trasmissione multilivello
US4881241A (en) * 1988-02-24 1989-11-14 Centre National D'etudes Des Telecommunications Method and installation for digital communication, particularly between and toward moving vehicles
US5053860A (en) * 1988-10-03 1991-10-01 North American Philips Corp. Method and apparatus for the transmission and reception multicarrier high definition television signal
US5063574A (en) * 1990-03-06 1991-11-05 Moose Paul H Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels

Also Published As

Publication number Publication date
NO923788L (no) 1992-11-27
WO1991015925A1 (en) 1991-10-17
FI924373A0 (fi) 1992-09-29
NO180789C (no) 1997-06-18
CA2078445A1 (en) 1991-10-17
EP0521995B1 (en) 1996-06-19
FI924373A (fi) 1992-09-29
JPH05505290A (ja) 1993-08-05
KR100186803B1 (ko) 1999-05-01
NO180789B (no) 1997-03-10
EP0521995A1 (en) 1993-01-13
US5488632A (en) 1996-01-30
ATE139660T1 (de) 1996-07-15
AU7584591A (en) 1991-10-30
DE69120401T2 (de) 1997-01-02
HK1004312A1 (en) 1998-11-20
DE69120401D1 (de) 1996-07-25
AU651818B2 (en) 1994-08-04

Similar Documents

Publication Publication Date Title
NO923788L (no) Sending og mottaking i omgivelser med sterke forstyrrelser
EP1330090A3 (en) Multiresolution transmission with multicarrier modulation
US4237486A (en) Compatible transmission of an encoded signal with a television
KR940027562A (ko) 디지털 신호 송신용 디지털 송신 시스템과 디지털 송신 시스템용 송신기와 수신기 및, 디지털 송신 방법
JPS6242537B2 (no)
JPH05102899A (ja) 多周波通信方式
EP1035696A3 (en) Mutliresolution transmission system
KR900702684A (ko) 변조파 전송 방법 및 이 방법을 구현하기 위한 송.수신기
US1641431A (en) Communication system
EP0130692A3 (en) A technique for the time frequency multiplexing of three television signals
CZ162694A3 (en) Micro-wave wireless communication line from spot to spot
GB1043231A (en) Improved wired broadcasting systems and apparatus therefor
ES8404593A1 (es) Aparato de television perfeccionado con varias vias de sonido.
KR100246539B1 (ko) 직접변환방식리얼제로단측파대송신장치
GB1043232A (en) Improved wired broadcasting systems and apparatus therefor
JP2004274610A (ja) ディジタル放送波中継方法、送信機及び受信機
ES2033665T1 (es) Procedimiento y dispositivo de transmision de senales de video en un medio confinado.
GB1166632A (en) Improved Wired Broadcasting Systems and Apparatus Therefor
TH53619A (th) ระบบการแพร่สัญญาณแบบในแถบบนช่องสำหรับข้อมูลดิจิตอล
JPS57106287A (en) Transmitting method of television multiplex signal and television receiver for television multiplex broadcasting
KR930022840A (ko) 다중상제거 송수신장치
GB444065A (en) Improvements in or relating to television and like systems
KR830009849A (ko) 텔리비죤 방송을 위한 다중신호 전송방법 및 장치
KR950010537A (ko) 고주파신호 변조장치
KR20010038727A (ko) 통신시스템의 전송방향에 따라 주파수변조와 진폭변조를 사용하는 양방향 통신장치