WO1989010662A1 - Communication process and device, by sub-carriers integrated in an analog or digital signal - Google Patents

Communication process and device, by sub-carriers integrated in an analog or digital signal Download PDF

Info

Publication number
WO1989010662A1
WO1989010662A1 PCT/FR1989/000178 FR8900178W WO8910662A1 WO 1989010662 A1 WO1989010662 A1 WO 1989010662A1 FR 8900178 W FR8900178 W FR 8900178W WO 8910662 A1 WO8910662 A1 WO 8910662A1
Authority
WO
WIPO (PCT)
Prior art keywords
digital
analog
filter
characterized
khz
Prior art date
Application number
PCT/FR1989/000178
Other languages
French (fr)
Inventor
Denis Marinier
Original Assignee
Denis Marinier
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
Priority to FR88/05334 priority Critical
Priority to FR8805334A priority patent/FR2630604A1/en
Application filed by Denis Marinier filed Critical Denis Marinier
Publication of WO1989010662A1 publication Critical patent/WO1989010662A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal

Abstract

Device for reproducing digital or analog data obtained from a sub-carrier modulator at the emission source and received by a sub-carrier demodulator, on the basis of any single analog or digital signal emitted by terrestial or Hertzian means. It comprises a set of peripherals connected to a central management computer (1 to 7) which sends the data, in the form of two channels, to a sub-carrier modulator (9 to 14). The latter transmits the whole of this data by terrestial or Hertzian means (15, 16). A sub-carrier demodulator (8 to 13) receives, by terrestial or Hertzian means (1 to 14) the single analog or digital signal, decodes it and transmits the analog or digital information received (14 to 16) to the designated supports.

Description

METHOD AND DEVICE FOR COMMUNICATION BY SUB-CARRIER IN AN INTEGRATED DIGITAL OR ANALOG SIGNAL.

The present invention relates to a method and a communication device, for sub-carriers included in an analog or digital signal.

Current communication systems whether terrestrial (specialized Worn Telecom binding) or wireless (radio, satellite), carry one informa¬ tion within the original signal.

Some communication systems operating with dedicated line terres¬ be or satellite possess within their original signal numerical integration for service signals for the remote control. Usually this digital integration is inserted towards the end of the band si¬ gnal of origin and therefore admits only one subcarrier, given the bandwidth passante.Un of these systems is known as DBR name.

Another communication system operating him by radio (FM radio) also exists and is known as SCA.

This system, in general, is built after the multiplex signal ana¬ logical path, around 60 KHz. This subcarrier provides an audio channel or digital information.

The invention aims to increase the number of transmitted subcarriers in an analog or digital signal and thus increase the possibilities of transmitting said analog or digital signal. This is achieved for all transmission modes they are terrestrial or wireless through a process and a specific implementation device.

A method according to the invention with regard to a subcarrier modulator emission source and a demodulator of subcarriers in receipt of the transmission source.

Digital and analog information to be transmitted on a single analog or digital signal, are modulated subcarrier by the modulator. To do this, the modulator decomposes the analog or digital signal ori¬ gin into two bands of different or identical frequencies. Different in order to obtain sufficient bandwidth to support au¬ diophonique quality in the first frequency band; in this case, the modulator module two subcarriers for digital information or a subcarrier audiophonic channel in the second frequency band. identical frequency bands if it is not desired quality audiophone support; in this case, the modulator modulates in each band -fréquences two subcarriers for digital information or a subcarrier audiophonic channel. Thus, in this case, is obtained on the transmission of a single analog or digital signal, four subcarriers for digital in- formations or two subcarriers audiophonic channels.

In receiving said basic analog or digital signal, whether terrestrial or wireless, a demodulator of subcarriers reformats and distributes or two digital information or audiophonic way, or four digital in¬ formations or two audiophonic channels . Upon receipt also, the choice between digital information and the audiophonic channels is done by an automatic control switching télécomman¬ being supplied from the transmission source by the subcarrier modulator.

Device for carrying out the method according to the invention comprising: in transmission: A central management computer receiving peripherals: picture server, text server governed audiophonic digital advertising, etc ... for the digital information; A sound control for audiophone support quality or at least audiophone way.

These digital or analog information to be transmitted arrive at a modulator tor of sub-carriers comprising:

- A 8 KHz filter for sending a audiophone source of quality, bandwidth: 50 Hz ... 8 kHz.

- A filter at 4.5 KHz for sending a bandwidth audiophone way: 50 Hz ... 4.5 kHz. - a subcarrier modulation for the next filter.

- A filter 12 KHz for sending digital information.

- A mixer mixing filters 8 KHz and 12 KHz.

In reception: A receiver depending on the desired reception, for example: a démodem for receiving a dedicated line, a satellite receiver for receiving a satellite, a demodulated frequency receiver for receiving a radio wave frequency-modulated, ...

- A demodulator subcarrier set output of the receiver and comprising:

- a shaping of the analogue signal.

- A filter to 8 KHz restoring the audiophone support quality. - A formatting digital .signaux.

- A filter with 12 KHz restoring digital information.

- An amplifier of précédeur filter.

- A subcarrier demodulator. - A filter at 4.5 kHz with its emphasis and restoring the way that audiophoni¬. Note that the frequencies given for the filters are not static.

According to a preferred embodiment of the invention, each digital information is connected to a digital addressing. This digital addressing sends sixty four digital information in delayed time and can, if cou¬ pled to a digital advertising audiophone governed, set the time passa¬ age specific audiophonic messages.

The invention will be further explained by means of a non-limiting embodiment described below with reference to the accompanying drawings in which:

- Figure 1 shows schematically the subcarriers si¬ tuation modulator.

- Figure 2 shows schematically the subcarriers situation demodulator.

As shown Figure 1, a central management computer and aiguilla¬ ge 1 receives its peripherals, for example, an image server 2, a bright text server 3, a written text server 4, a board audiophoni ¬ 5 advertising, and also by digital addressing sixty six other possi- digital information bedded. All these possibilities are halved by the computer and thus come in the form of two paths. Each of these channels fall within the subcarrier modulator 8 of a fil¬ be 4.5 KHz 9 and 9 'and a pre-emphasis 10 and 10' is performed; Finally a modulation subcarrier 11 and 11 'is performed to obtain a filtered KHz be 12 12 and 12'. These two filters 12 KHz result in a blender

13. This mixer also receiving a 8KHz filter 14 which itself receives a regulated audiophonic 7. The output of the thus-mixed mixer and thus the output of the subcarrier modulator enters the audiophonic input, or digital logic ana¬ either a modem 15 type RS 232 for transmission over leased line or either a SCA encoder 16 for transmission over a frequency-modulated émet¬ tor.

In Figure 2, the analog or digital output of the audiophonic requested appro¬ receiver, whether a démodem 1 for specialized online reception, ré¬ satellite receiver 2, a frequency demodulated receiver accompanied with ACS decoder 3 or other radio receiver 4 is connected to the subcarrier demodulator 5 at its first input through a shaping circuit 6, followed by the filter 7 to 8 KHz to restore the audiophonic channel quality and also at its second input , through a shaping circuit 8 followed by its filter 9 to 12 KHz and its amplifier 10, then the subcarrier demodulator 11 followed by its filter to 4.5 KHz 12 with his deemphasis .. The outputs of the filters 7 and 12 enters the digital addressing decoder circuit 13 controlled automatic. The outputs of this address are the final outputs: analog output high quality 14, analog output 15 and digital output 16 may change several serially numéri¬ c: screens images, light panels, printers, etc ..

The advantages of the device according to the invention are important:

- The ability to carry multiple digital or analog information on a single analog or digital signal, allows the utilisa¬ tor significantly increase its communication possibilities.

- The addition of the digital addressing the device also allows the uti¬ lisateur to manage a very large number of messages, thus ensuring virtually all customer demands in communication.

This product exactly meets a significant market demand for communi¬ cation in the audiovisual media: eg chains stores, cities, media, etc ..

Claims

Revendicationsde patent:
1. A communication method, from a set of digital and analog information to be transmitted over a single analog or digital signal, characterized by a subcarrier modulator fitting on all terrestrial or wireless ap¬ pareillages d emission, and characterized in that the reception of the single basic analog or digital signal is performed by a demodulator subcarriers distributing c numéri¬ or analog information to the designated media.
2. Method according to claim 1, characterized in that the number of transmitted and received informa- tion are:
- either two digital or audiophone way
- or four digital όι "two-way audiophonic if it is not desired quality audiophone support.
3. Process according to Claims 1 and 2, characterized in that the choice en¬ be analog and digital information is operated by an automatic control switch remote from the emission source.
4. Device for the restitution of digital and analog information, obtained from a set of management computer and its peripheral devices (1-6), characterized in that it comprises a modulator of subcarriers (8) comprising a first filter to 4.5 KHz (9 and 9 '), then a préaccentua¬ tion (10 and 10') and a modulating subcarriers (11 and 11 ') réali¬ EDC for a filter 12 kHz (12 and 12 '). This filter leading to a mixer (13). This same mixer also receiving a 8KHz filter (14) which receives an audiophonic board (7). The mixer can be out on a démodem (15) either on an SCA encoder (16) to attack any possibi¬ ity of terrestrial or wireless transmission, and characterized in that it identifies con¬ demodulator sub carrier (5) receiving the single analo- ;, cal or digital signal in terrestrial form (1) or wireless (2 to 4) and keeping it in the form (6 and 8) on a first filter 8 KHz (7) restoring the quality of diophonique au¬ path as well as a second filter 12 KHz (9) monitoring the amplifier (10) followed by its demodulator sub-carrier (11) accompanied by its filter to 4.5 KHz and its deemphasis (12) in order to restore the digital information or the audiophonic analog channel.
5. Device according to claim 4 characterized in that an address is provided from numé¬ America 1 emission * on subcarrier modulator and is received in time delayed by the subcarrier demodulator on his decoder (13) controlled automatically.
6. Device according to claims 4 and 5 characterized in that the analogue outputs (14,15} and digital (16) of the subcarrier demodulator are provided wanted audiophonic and visual aids.
PCT/FR1989/000178 1988-04-22 1989-04-18 Communication process and device, by sub-carriers integrated in an analog or digital signal WO1989010662A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR88/05334 1988-04-22
FR8805334A FR2630604A1 (en) 1988-04-22 1988-04-22 Method and apparatus for communication by integrated subcarkers in an analog or digital signal

Publications (1)

Publication Number Publication Date
WO1989010662A1 true WO1989010662A1 (en) 1989-11-02

Family

ID=9365557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1989/000178 WO1989010662A1 (en) 1988-04-22 1989-04-18 Communication process and device, by sub-carriers integrated in an analog or digital signal

Country Status (5)

Country Link
EP (1) EP0338917A1 (en)
AU (1) AU3539389A (en)
DE (1) DE3838727A1 (en)
FR (1) FR2630604A1 (en)
WO (1) WO1989010662A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT115798T (en) * 1989-10-16 1994-12-15 Falter & Funk Gmbh Co Device for transmitting audio information and / or digital information.
DE19601161A1 (en) * 1995-05-27 1996-11-28 Deutsche Telekom Ag Additional information transmission method esp. for television channels

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2051034A1 (en) * 1970-10-17 1972-06-08 Hessischer Rundfunk
US3922607A (en) * 1974-08-14 1975-11-25 Drake Co R L Radio broadcasting system
US4379947A (en) * 1979-02-02 1983-04-12 Teleprompter Corporation System for transmitting data simultaneously with audio
US4417349A (en) * 1979-11-08 1983-11-22 Digital Broadcasting Corporation SCA Data transmission system with a raised cosine filter
US4449249A (en) * 1982-09-27 1984-05-15 Price Robert T Televison programming information system
GB2146204A (en) * 1983-09-06 1985-04-11 Mcmartin Ind Inc FM subsidiary transmission method and system
EP0172095A1 (en) * 1984-07-30 1986-02-19 Dimitri Baranoff-Rossine Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission
US4660193A (en) * 1983-10-11 1987-04-21 Regency Electronics, Inc. Digital modulation method for standard broadcast FM subcarrier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2051034A1 (en) * 1970-10-17 1972-06-08 Hessischer Rundfunk
US3922607A (en) * 1974-08-14 1975-11-25 Drake Co R L Radio broadcasting system
US4379947A (en) * 1979-02-02 1983-04-12 Teleprompter Corporation System for transmitting data simultaneously with audio
US4417349A (en) * 1979-11-08 1983-11-22 Digital Broadcasting Corporation SCA Data transmission system with a raised cosine filter
US4449249A (en) * 1982-09-27 1984-05-15 Price Robert T Televison programming information system
GB2146204A (en) * 1983-09-06 1985-04-11 Mcmartin Ind Inc FM subsidiary transmission method and system
US4660193A (en) * 1983-10-11 1987-04-21 Regency Electronics, Inc. Digital modulation method for standard broadcast FM subcarrier
EP0172095A1 (en) * 1984-07-30 1986-02-19 Dimitri Baranoff-Rossine Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission

Also Published As

Publication number Publication date
DE3838727A1 (en) 1989-11-09
AU3539389A (en) 1989-11-24
FR2630604A1 (en) 1989-10-27
EP0338917A1 (en) 1989-10-25

Similar Documents

Publication Publication Date Title
US3366731A (en) Television distribution system permitting program substitution for selected viewers
EP0594353B1 (en) Method of initializing terminals in a signal distribution system
RU2119726C1 (en) Network controller for cable tv system, network controller for remote control of accounting information, method for usage of equipment for digital signal processing, method for usage of control node of cable tv network for remote destination of advertisements, method for remote control of accounting information
US6741834B1 (en) Device and method to improve integrated presentation of existing radio services and advanced multimedia services
US5790170A (en) Two-way information transmission system and two-way information transmission method
CA2116801C (en) Integrated television services system
US5929895A (en) Low cost hybrid video distribution system for aircraft in-flight entertainment systems
EP0712242B1 (en) Television receiver with a message providing system
US6208626B1 (en) Real-time satellite communication system using separate control and data transmission paths
US5864546A (en) System for formatting broadcast data for satellite transmission and radio reception
US5572442A (en) System for distributing subscription and on-demand audio programming
US4704715A (en) Information communication system
JP3331158B2 (en) Data transmission system and method and a broadcast resource mapping method
US4520404A (en) System, apparatus and method for recording and editing broadcast transmissions
AU597468B2 (en) Service and entertainment system
US4654843A (en) Signal distribution system
US3221098A (en) Multiple lingual television in a multiplex broadcast system
US4945412A (en) Method of and system for identification and verification of broadcasting television and radio program segments
US4450477A (en) Television information system
US3639686A (en) Television receiver cut-in device
EP0488289A2 (en) Video network system
US5825407A (en) Cable television audio messaging systems
US4887152A (en) Message delivery system operable in an override mode upon reception of a command signal
CN1123224C (en) Analog/digital cable TV capble of performing bidirectional communication
US4430731A (en) Video and data distribution module with subscriber terminal

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BB BR JP KP KR MC MG SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BF BJ CF CG CM GA ML MR SN TD TG