ES2062153T3 - Sistema de transmision de television por cable optico. - Google Patents

Sistema de transmision de television por cable optico.

Info

Publication number
ES2062153T3
ES2062153T3 ES90107060T ES90107060T ES2062153T3 ES 2062153 T3 ES2062153 T3 ES 2062153T3 ES 90107060 T ES90107060 T ES 90107060T ES 90107060 T ES90107060 T ES 90107060T ES 2062153 T3 ES2062153 T3 ES 2062153T3
Authority
ES
Spain
Prior art keywords
frequency band
frequency
cable television
transformed
band
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES90107060T
Other languages
English (en)
Inventor
Rolf Dr Heidemann
Heinz Krimmel
Berthold Dr Wedding
Hans Jurgen Dr Matt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
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 claimed from DE3913520A external-priority patent/DE3913520A1/de
Priority claimed from DE19893918530 external-priority patent/DE3918530A1/de
Application filed by Alcatel SEL AG filed Critical Alcatel SEL AG
Application granted granted Critical
Publication of ES2062153T3 publication Critical patent/ES2062153T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Optical Communication System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

EL INVENTO SE PLANTEA EL PROBLEMA DE TRASMITIR UNA SEÑAL MULTIPLEX DE FRECUENCIA, QUE ABARCA UNA ANCHA BANDA DE FRECUENCIA, POR EJEMPLO, LA BANDA DE FRECUENCIAS DE UNA TELEVISION POR CABLE DE 60 A 440 MHZ, A TRAVES DE UN TRAMO DE TRANSMISION DE FIBRA OPTICA. SEGUN EL INVENTO, EN EL DISPOSITIVO EMISOR SE TRANSFORMA TODA LA BANDA DE FRECUENCIAS A TRANSMITIR, POR MODULACION DE AMPLITUDES DE BANDA LATERAL UNICA DE UNA PORTADORA DE ALTA FRECUENCIA (FO), EN UNA BANDA DE MAYOR FRECUANCIA, POR EJEMPLO, DE 840 A 1240 MHZ, QUE, REFERIDA A SU FRECUENCIA MAS BAJA, ES UN OCTAVO MENOS ANCHA. LOS PRODUCTOS DE INTERMODULACION DE SEGUNDO ORDEN QUE SE ORIGINAN NORMALMENTE DURANTE LA TRANSFORMACION EN UNA SEÑAL OPTICA, SE SITUAN CON ELLO EN UNA ZONA DE FRECUENCIAS NO OCUPADA. POR PARTE DEL RECEPTOR SE PRODUCE LA CORRESPONDIENTE DESMODULACION, BIEN POR RECUPERACION DEL SOPORTE TRANSMISOR, O BIEN UTILIZANDO UN SOPORTE ORIGINADO LOCALMENTE. TAMBIEN RESULTA VENTAJOSO QUE LA BANDA DE FRECUENCIAS A TRANSMITIR ESTRANSFORMADA EN VARIAS BANDAS PARCIALES EN LA BANDA DE MAYOR FRECUENCIA.
ES90107060T 1989-04-25 1990-04-12 Sistema de transmision de television por cable optico. Expired - Lifetime ES2062153T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913520A DE3913520A1 (de) 1989-04-25 1989-04-25 Optisches kabelfernsehuebertragungssystem
DE19893918530 DE3918530A1 (de) 1989-06-07 1989-06-07 Modulator/demodulator, insbesondere fuer ein optisches kabelfernseh-uebertragungssystem

Publications (1)

Publication Number Publication Date
ES2062153T3 true ES2062153T3 (es) 1994-12-16

Family

ID=25880242

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90107060T Expired - Lifetime ES2062153T3 (es) 1989-04-25 1990-04-12 Sistema de transmision de television por cable optico.

Country Status (3)

Country Link
EP (1) EP0394772B1 (es)
DE (1) DE59006809D1 (es)
ES (1) ES2062153T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001039A1 (de) * 1990-01-16 1991-07-18 Standard Elektrik Lorenz Ag Optisches kabelfernseh-uebertragungssystem
JPH09172632A (ja) * 1995-12-19 1997-06-30 Sony Corp 光送信装置
US9136955B2 (en) 2009-06-30 2015-09-15 Thomson Licensing Method of resending digital signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135202A (en) * 1973-12-03 1979-01-16 Communications Patents Limited Broadcasting systems with fibre optic transmission lines
US4512025A (en) * 1982-11-23 1985-04-16 The United States Of America As Represented By The United States Department Of Energy Increasing capacity of baseband digital data communication networks
CH667169A5 (de) * 1984-07-20 1988-09-15 Bbc Brown Boveri & Cie Verfahren zur phasenstarren uebertragung eines niederfrequenten modulationssignals sowie schaltungsanordnung zur durchfuehrung des verfahrens.
DE3739101A1 (de) * 1987-11-19 1989-06-01 Krupp Atlas Elektronik Gmbh Optischer einseitenbandmodulator

Also Published As

Publication number Publication date
EP0394772A3 (de) 1991-01-23
EP0394772B1 (de) 1994-08-17
EP0394772A2 (de) 1990-10-31
DE59006809D1 (de) 1994-09-22

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