WO1993000774A1 - Systeme de diffusion a relais - Google Patents

Systeme de diffusion a relais Download PDF

Info

Publication number
WO1993000774A1
WO1993000774A1 PCT/GB1992/001097 GB9201097W WO9300774A1 WO 1993000774 A1 WO1993000774 A1 WO 1993000774A1 GB 9201097 W GB9201097 W GB 9201097W WO 9300774 A1 WO9300774 A1 WO 9300774A1
Authority
WO
WIPO (PCT)
Prior art keywords
store
signal
relay station
receiving
coupled
Prior art date
Application number
PCT/GB1992/001097
Other languages
English (en)
Inventor
Andrew Finney
Original Assignee
British Broadcasting Corporation
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
Application filed by British Broadcasting Corporation filed Critical British Broadcasting Corporation
Priority to BR9206170A priority Critical patent/BR9206170A/pt
Publication of WO1993000774A1 publication Critical patent/WO1993000774A1/fr
Priority to GB9325098A priority patent/GB2272348B/en
Priority to BG98312A priority patent/BG98312A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/02—Arrangements for relaying broadcast information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/10—Arrangements for replacing or switching information during the broadcast or the distribution
    • 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

Definitions

  • This invention relates to a broadcast relay transmission system for use in a broadcasting network, more particularly a television network.
  • a district can opt out to allow localised news, weather, travel, advertising or other information to be inserted into the output for a group of transmitters or a single transmitter in the chain.
  • a line-feed of the network signal can be fed through a regional or local studio centre on its way to the distant transmitter.
  • a studio centre it might be uneconomic for a studio centre to be set up and/or the topography or topology of the network might make line-feeds uneconomic or even impractical, especially in situations where a very small group of transmitters, or even a single transmitter, would broadcast the material.
  • a preferred embodiment of the invention will be described in more detail below in the form of a broadcast television relay transmission system which comprises a relay station which receives a TV signal from a parent transmitter and re-transmits it over a relay transmitter.
  • Local information such as for example a local weather map may from time to time be required to replace the signal from the parent transmitter.
  • the relay station has a computer which stores the various components of the weather map, namely the background map and a variety of icons, and a local studio centre transmits to it descriptors in the form of instructions or codes identifying the required picture components and their desired locations.
  • This data signal may be transmitted by telephone link and mode or may be included in the signal transmitted by the parent transmitter and downloaded by a receiver and decoder at the relay station.
  • Figure 1 is a schematic block diagram of a network system embodying the invention.
  • Figure 2 illustrates how a local weather map is built up at the relay transmitter in the system of Figure 1.
  • the broadcast television network 10 illustrated in Figure 1 receives from a main studio a network output indicated at 12 which is transmitted by a transmitter 14.
  • a relay station 16 has a simultaneous broadcast (S/B) or rebroadcast receiver 18 coupled to a receiving antenna 17 and which receives the transmitted network signal. This is then applied to a transmitter 20 having an antenna 21 (diagrammatically shown) which transmits on a different frequency to serve the local area.
  • S/B simultaneous broadcast
  • rebroadcast receiver 18 coupled to a receiving antenna 17 and which receives the transmitted network signal.
  • This is then applied to a transmitter 20 having an antenna 21 (diagrammatically shown) which transmits on a different frequency to serve the local area.
  • the system is a typical relay system.
  • the system illustrated additionally includes at the relay station a computer 22 which receives inputs from a modem 24 and/or from a data receiver 26 which extracts digital data from the signal transmitted by the transmitter 14 and received by the S/B receiver 18.
  • the computer output is added to the signal applied from the S/B receiver 18 to the local transmitter 20 by a switcher/inserter 28.
  • a local control centre 30 is capable of being connected to the modem 24 at the relay station by a dial-up telephone link 32, and/or is similarly connected to modify the network output 12 via a link 34.
  • the system operates as follows. It is convenient to explain the operation by reference to a specific example, such as a weather map, as shown in Figure 2. It is desired that the relay station 16 transmits at an appropriate time a weather map as shown at (c) in Figure 2, covering just the local area served by the relay station.
  • a video signal representing the map at (c) is generated at the local control centre 30 and transmitted at full video bandwidth over a land line or the like to the relay station 16.
  • the various components of the weather map are stored in a non-volatile store 23 diagrammatically shown in the computer 22. These components comprise the local map shown at (a) in Figure 2, and the icons which are to be placed on that map, shown at (b) in Figure 2.
  • an object-oriented data signal is transmitted over the telephone link 32 from the local centre 30 indicating which icons are required on the map, and their locations.
  • the amount of data which needs to be transmitted to the relay station is thus trivially small compared with the full bandwidth video signal previously sent.
  • the computer 22 receives the instructions to display the map and place the symbols on it at designated co-ordinates. It will be appreciated therefore that neither the symbols nor the map are actually sent from the local centre to the transmitter, but only the display instructions.
  • the computer includes the store for the pictures, picture elements, or text items, and performs the function of a control unit.
  • the control unit controls the reading of the information from the store in response to the data received by the modem, and their location in the picture, and also the combination with the main signal in the switcher/inserter 28.
  • the information can be recalled from the store by interpreting the instructions or codes received by the modem which are related to the individual information items.
  • the computer on-line local store 23 holds maps of the local area, "sprite"-type images (the display objects) to represent weather features such as cloud, rain, thunder etc., the means to generate a suitable audio commentary (conveniently using text-to-speech or sampled words and phrases), and to display text on the screen, and other elements needed for the building up of a weather forecast.
  • the computer is also able to store the program to control the building up and display of the forecast.
  • PSTN local area network
  • PW private wire
  • the system uses readily available narrow band distribution methods to send information to the remote computer facility at the relay transmitter, to enable the computer to build up a suitable display and then insert it onto the air from the relay, replacing whatever is being transmitted at that moment by the parent, and which would otherwise be transmitted by the relay as well.
  • the computer 22 is preferably able to generate both images and sounds, and to control their insertion into the transmitter output stream.
  • a remote operator (at HQ, or at a local radio station for example) sends information to the controlling display program in the computer 22 to enable the map to be built up.
  • This information might be of the form:
  • This information if sent in a coded form, can quickly and easily be sent by telephone whereas sending a whole picture would take several minutes. Further commands can be used to animate the display, possibly in real time, and generate an audio commentary if one is needed. Alternatively an audio commentary could be sent using a wide band private wire if one were available, or by sending digitised and/or compressed speech to the relay's computer (22) by the same channel as the display objects.
  • the object-oriented data may not be sent by the telephone link 32 from the local centre 30 to the modem 24, but can alternatively be included in the main transmitted signal.
  • the data is sent to the network output by link 34, which may be another dial-up telephone link.
  • link 34 which may be another dial-up telephone link.
  • the dial-up links to the transmitter 14 and the relay station can be used together or as alternatives, depending on circumstances.
  • Data transmitted by transmitter 14 may be included in a teletext or datacast or NICAM audio signal for example, and is extracted at the relay station by the receiver 26 for application to the computer 22.
  • the computer translates the object data into transmission pictures, and if appropriate, sound and the vision and audio signals are applied to the switcher/inserter 28 which applies the network and computer feeds to the relay transmitter 20 under computer control.
  • the system can be used to replace the network output as described above, or to augment it by displaying text superimposed on the network output as, for example, with subtitles.
  • Potential applications include:
  • the data for the system could be distributed by a completely separate diffusion system, such as satellite, or even by hand, with the store being updated manually by someone visiting the station and uploading new data on a regular or occasional basis.
  • the main signal feed to the relay station can be indirect, with a transmitter being fed from a remote receiver by land line or microwave link, as well as having a receiver actually at the distant transmitter site. This may be visualized in Figure 1 by regarding the S/B receiver 18 as being physically spaced from the rest of the relay station.
  • the output of a remote and/or unmanned transmitter can be modified as required.
  • the regionality of a network can be enhanced with a substantially reduced infrastructure cost.
  • High quality, still or animated images can be transmitted from a remote transmitter without the need for a direct clean feed to that transmitter.
  • the invention is thus particularly beneficial where the whole image is to be substituted by the local information, though it is also beneficial in other circumstances where image portions of pictorial information are to be used. The need to transmit the pictorial image portion to the relay station in real time is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Radio Relay Systems (AREA)

Abstract

Système de diffusion d'émission télévision par relais, comprenant une station relais (16) qui reçoit (17, 18) un signal télévision d'un émetteur père (14) et le retransmet par un transmetteur relais (20, 21). On peut vouloir transmettre des informations locales, par exemple une carte météo locale, en lieu et place du signal d'un transmetteur père. A cette fin, un ordinateur (22), qui dispose d'une mémoire non volatile (23) pour mémoriser les différentes composantes de la carte météorologique, une carte des icônes de fond, etc., et un studio local (30), transmet des instructions identifiant les composantes image nécessaires ainsi que leurs positions souhaitées. Le signal peut être transmis par le réseau téléphonique (32) et un modem (34), ou bien être inclus dans le signal transmis par l'émetteur père (14) puis téléchargé via un récepteur/décodeur (26). Grâce à ce système, il n'est pas nécessaire d'entretenir une ligne terrestre à largeur de bande vidéo ou une liaison analogue avec la station relais.
PCT/GB1992/001097 1991-06-21 1992-06-18 Systeme de diffusion a relais WO1993000774A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR9206170A BR9206170A (pt) 1991-06-21 1992-06-18 Estação de retransmissão de difusão, unidade de transmissão de sinal de vídeo e sistema auxiliar de geração de imagens
GB9325098A GB2272348B (en) 1991-06-21 1993-12-07 Broadcast relay transmission system
BG98312A BG98312A (en) 1991-06-21 1993-12-20 Relaying system for the retransmission of tv signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9113394.2 1991-06-21
GB919113394A GB9113394D0 (en) 1991-06-21 1991-06-21 Broadcast relay transmission system

Publications (1)

Publication Number Publication Date
WO1993000774A1 true WO1993000774A1 (fr) 1993-01-07

Family

ID=10697063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/001097 WO1993000774A1 (fr) 1991-06-21 1992-06-18 Systeme de diffusion a relais

Country Status (5)

Country Link
BG (1) BG98312A (fr)
BR (1) BR9206170A (fr)
GB (2) GB9113394D0 (fr)
HU (1) HUT67280A (fr)
WO (1) WO1993000774A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288714A (en) * 1994-04-12 1995-10-25 Bagano Ltd Data transmission in television microwave signal broadcasting
US5577735A (en) * 1991-05-28 1996-11-26 Tci Technology, Inc. Computer software delivery system
US8862048B2 (en) 2009-09-11 2014-10-14 Geo-Broadcast Solutions, Llc Equipment, system and methodologies for segmentation of listening area into sub-areas enabling delivery of localized auxiliary information
US9232481B1 (en) 2009-09-11 2016-01-05 Geo-Broadcast Solutions, Llc Equipment, system and methodologies for robust coverage in a broadcast area

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914712A (en) * 1995-05-08 1999-06-22 Video Jukebox Network, Inc. Interactive video system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514941A (en) * 1975-09-15 1978-06-21 British Broadcasting Corp Broadcasting messages
GB2195868A (en) * 1986-08-21 1988-04-13 Gainsborough Holdings Ltd Broadcasting of map information
US5029014A (en) * 1989-10-26 1991-07-02 James E. Lindstrom Ad insertion system and method for broadcasting spot messages out of recorded sequence
EP0443933A1 (fr) * 1990-02-21 1991-08-28 Aavs Arcomis Groupe Avs, Sarl Procédé pour l'insertion de messages sonores dans un programme diffusé localement
FR2664115A1 (fr) * 1990-06-28 1992-01-03 Sh Ace Installation de distribution de donnees a distance, en particulier par melange de textes et d'images a haute definition.
EP0482801A2 (fr) * 1990-10-23 1992-04-29 Sony ( Australia) Pty Limited Systèmes de transmission automatique pour télévision et radiodiffusion

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514941A (en) * 1975-09-15 1978-06-21 British Broadcasting Corp Broadcasting messages
GB2195868A (en) * 1986-08-21 1988-04-13 Gainsborough Holdings Ltd Broadcasting of map information
US5029014A (en) * 1989-10-26 1991-07-02 James E. Lindstrom Ad insertion system and method for broadcasting spot messages out of recorded sequence
EP0443933A1 (fr) * 1990-02-21 1991-08-28 Aavs Arcomis Groupe Avs, Sarl Procédé pour l'insertion de messages sonores dans un programme diffusé localement
FR2664115A1 (fr) * 1990-06-28 1992-01-03 Sh Ace Installation de distribution de donnees a distance, en particulier par melange de textes et d'images a haute definition.
EP0482801A2 (fr) * 1990-10-23 1992-04-29 Sony ( Australia) Pty Limited Systèmes de transmission automatique pour télévision et radiodiffusion

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
FUNKSCHAU. no. 12, June 1982, MUNCHEN DE pages 77 - 79 'Rechnergestützt: Sendernetz automatisch überwacht' *
FUNKSCHAU. vol. 62, no. 14, 29 June 1990, MUNCHEN DE pages 60 - 62 U.BERGER 'Computer an den Schaltstellen' *
NEC RESEARCH AND DEVELOPMENT no. 58, July 1980, TOKYO JP pages 1 - 8 S.MOTOHASHI ET AL. 'TV Broadcast Automation' *
SMPTE JOURNAL vol. 87, no. 6, June 1978, SCARSDALE, NY US pages 383 - 385 R.W.ZBOROWSKI 'Automatic Transmission System for Television' *
SMPTE JOURNAL vol. 94, no. 5, May 1985, SCARSDALE, NY US pages 559 - 565 Y.MORII ET AL. 'A new master control system for NHK's local stations' *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577735A (en) * 1991-05-28 1996-11-26 Tci Technology, Inc. Computer software delivery system
US5944608A (en) * 1991-05-28 1999-08-31 Tci Technology, Inc. Computer software delivery system
US6126546A (en) * 1991-05-28 2000-10-03 Tci Technology Management, Llc Computer software delivery system
US6402618B1 (en) 1991-05-28 2002-06-11 Time Warner Entertainment Co. Lp Computer software delivery system
GB2288714A (en) * 1994-04-12 1995-10-25 Bagano Ltd Data transmission in television microwave signal broadcasting
GB2288714B (en) * 1994-04-12 1999-01-20 Bagano Ltd Improvements in and relating to microwave signal broadcasting
US8862048B2 (en) 2009-09-11 2014-10-14 Geo-Broadcast Solutions, Llc Equipment, system and methodologies for segmentation of listening area into sub-areas enabling delivery of localized auxiliary information
US9232481B1 (en) 2009-09-11 2016-01-05 Geo-Broadcast Solutions, Llc Equipment, system and methodologies for robust coverage in a broadcast area

Also Published As

Publication number Publication date
BG98312A (en) 1994-01-03
HU9303550D0 (en) 1994-04-28
GB9113394D0 (en) 1991-08-07
BR9206170A (pt) 1994-12-06
GB9325098D0 (en) 1994-02-16
GB2272348A (en) 1994-05-11
GB2272348B (en) 1995-02-22
HUT67280A (en) 1995-03-28

Similar Documents

Publication Publication Date Title
US6064420A (en) Simulating two way connectivity for one way data streams for multiple parties
US6209132B1 (en) Host apparatus for simulating two way connectivity for one way data streams
EP1053641B1 (fr) Appareil portable pour simulation a connectivite bidirectionnelle pour trains de donnees unidirectionnels
US6005602A (en) Message delivery method for interactive televideo system
US6452640B1 (en) Sound bite augmentation
JPH07203420A (ja) 双方向放送方式およびその受信装置とその遠隔制御装置
US8949885B2 (en) Systems, methods and apparatus for transmitting weather information in a television distribution network
EP1024661A3 (fr) Guide de programme électronique avec image et graphique
NZ309286A (en) Asymmetric data communications system
JPH09511376A (ja) ビデオモザイクとテレテキストとの合成
GB2309134A (en) Information inclusion in television broadcasting
JP2002509665A (ja) テレビ放送システム及び方法
WO1993000774A1 (fr) Systeme de diffusion a relais
AU2003200904B9 (en) Enhancement for interactive TV formatting apparatus
JPH11284963A (ja) 放送波に関する情報供給方法と放送波を受信する受信装置
JP3641136B2 (ja) ディジタル放送システムとその端末装置
JP3988053B2 (ja) 放送送受信方法
KR20010109720A (ko) 대중 교통수단내 인터넷정보 전송방법
JP4863084B2 (ja) 受信装置、受信方法、送信装置、および送信方法
KR100265274B1 (ko) 개선된위성방송수신기의프로그램정보표시방법
JPH0767172B2 (ja) 車両情報受信システム
KR100682986B1 (ko) 국제 방송 로밍 기능을 가지는 위성의 중계장치 및 그 방법
EP1271820A1 (fr) Systeme de production de programme de radiodiffusion de donnees, procede de programme de radiodiffusion de donnees, programme informatique de production de programme de radiodiffusion de donnees et support enregistre lisible par ordinateur
KR20020076394A (ko) 데이터베이스를 사용한 콘텐츠 내장의 디지털 전송 시스템
JPH08242432A (ja) テレビジョン放送システム

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BG BR GB HU RO RU

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 93-01738

Country of ref document: RO