IT1255805B - Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale - Google Patents

Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale

Info

Publication number
IT1255805B
IT1255805B ITMI921954A ITMI921954A IT1255805B IT 1255805 B IT1255805 B IT 1255805B IT MI921954 A ITMI921954 A IT MI921954A IT MI921954 A ITMI921954 A IT MI921954A IT 1255805 B IT1255805 B IT 1255805B
Authority
IT
Italy
Prior art keywords
frequency
signal
radio
isofrequential
broadcast
Prior art date
Application number
ITMI921954A
Other languages
English (en)
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 filed Critical
Priority to ITMI921954A priority Critical patent/IT1255805B/it
Publication of ITMI921954A0 publication Critical patent/ITMI921954A0/it
Priority to DE69321312T priority patent/DE69321312T2/de
Priority to ES93111014T priority patent/ES2121903T3/es
Priority to EP93111014A priority patent/EP0582103B1/en
Publication of ITMI921954A1 publication Critical patent/ITMI921954A1/it
Application granted granted Critical
Publication of IT1255805B publication Critical patent/IT1255805B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Noise Elimination (AREA)

Abstract

La frequenza del segnale radiofonico isofrequenziale (fr) è convertita mediante battimento con una frequenza fissa generata da un oscillatore locale (12) asservito a un oscillatore di riferimento (14) secondo un fattore costante. Mediante filtraggio passa-banda si preleva un segnale intermedio (fr) di frequenza portante pari alla differenza fra la frequenza del segnale radiofonico e la frequenza fissa e lo si trasmette sul ponte radio insieme alla frequenza di riferimento.Sul lato di ricezione si filtra il segnale ricevuto dal ponte radio in due filtri passa-banda (20,22) in modo da isolare il segnale intermedio, e la frequenza di riferimento. Da questa si ricostruisce la frequenza fissa, filtrando per riottenere il segnale radiofonico originario.Il metodo può essere esteso alla trasmissione di più segnali radiofonici con un unica frequenza di riferimento su uno stesso ponte radio.
ITMI921954A 1992-08-07 1992-08-07 Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale IT1255805B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITMI921954A IT1255805B (it) 1992-08-07 1992-08-07 Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale
DE69321312T DE69321312T2 (de) 1992-08-07 1993-07-09 Verfahren zur Übertragung radiophoner Signale mittels Radiorelaissystem für das Isofrequenzsenden
ES93111014T ES2121903T3 (es) 1992-08-07 1993-07-09 Metodo para transferir, por medio de un sistema de radioenlace señales radiofonicas para la emision de isofrecuencia.
EP93111014A EP0582103B1 (en) 1992-08-07 1993-07-09 Method for transferring, by means of a radio relay system radiophonic signals for isofrequency broadcasting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI921954A IT1255805B (it) 1992-08-07 1992-08-07 Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale

Publications (3)

Publication Number Publication Date
ITMI921954A0 ITMI921954A0 (it) 1992-08-07
ITMI921954A1 ITMI921954A1 (it) 1994-02-07
IT1255805B true IT1255805B (it) 1995-11-16

Family

ID=11363853

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI921954A IT1255805B (it) 1992-08-07 1992-08-07 Procedimento per il trasferimento tramite ponte radioelettrico video di segnali destinati alla radiodiffusione isofrequenziale

Country Status (4)

Country Link
EP (1) EP0582103B1 (it)
DE (1) DE69321312T2 (it)
ES (1) ES2121903T3 (it)
IT (1) IT1255805B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248685A1 (de) * 2002-07-15 2004-02-05 Prosch, Theodor, Dr. Gleichwellensendernetze auf der Grundlage von Breitbandverteilanlagen
DE102004016406B4 (de) * 2004-03-26 2006-06-08 Prosch, Theodor, Dr. Steuerung von Gleichwellensendern mit Signalzuführung durch Breitbandverteilanlagen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475243A (en) * 1982-12-21 1984-10-02 Motorola, Inc. Isolation method and apparatus for a same frequency repeater
US5089815A (en) * 1987-05-08 1992-02-18 Detector Systems, Inc. Vehicle communication system using existing roadway loops
IT1205657B (it) * 1987-05-21 1989-03-31 Rai Radiotelevisione Italiana Impianto di radiodiffusione isofrequenziale di programmi radiofonici,particolarmente in modulazione di frequenza,lungo un percorso stradale

Also Published As

Publication number Publication date
DE69321312D1 (de) 1998-11-05
EP0582103B1 (en) 1998-09-30
EP0582103A3 (en) 1995-02-01
ITMI921954A1 (it) 1994-02-07
EP0582103A2 (en) 1994-02-09
ITMI921954A0 (it) 1992-08-07
ES2121903T3 (es) 1998-12-16
DE69321312T2 (de) 1999-04-01

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970801