EP0078494B1 - Dispositif de réception pour la réception des émissions d'un satellite - Google Patents

Dispositif de réception pour la réception des émissions d'un satellite Download PDF

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Publication number
EP0078494B1
EP0078494B1 EP82109906A EP82109906A EP0078494B1 EP 0078494 B1 EP0078494 B1 EP 0078494B1 EP 82109906 A EP82109906 A EP 82109906A EP 82109906 A EP82109906 A EP 82109906A EP 0078494 B1 EP0078494 B1 EP 0078494B1
Authority
EP
European Patent Office
Prior art keywords
antenna
circuit arrangement
side circuit
control commands
line
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
Application number
EP82109906A
Other languages
German (de)
English (en)
Other versions
EP0078494A3 (en
EP0078494A2 (fr
Inventor
Charles Schepers
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.)
Nokia Deutschland GmbH
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel NV
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV filed Critical Alcatel SEL AG
Priority to AT82109906T priority Critical patent/ATE32153T1/de
Publication of EP0078494A2 publication Critical patent/EP0078494A2/fr
Publication of EP0078494A3 publication Critical patent/EP0078494A3/de
Application granted granted Critical
Publication of EP0078494B1 publication Critical patent/EP0078494B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system

Definitions

  • the invention relates to a receiving device of the type specified in the preamble of claim 1.
  • radio and television programs can be received, which are emitted by a fixed radio satellite.
  • the receiving antenna is aimed at the satellite.
  • a specific coverage area is assigned to a broadcast satellite. In particular in peripheral areas of such coverage areas, several coverage areas overlap, so that broadcasts of one or more other satellites can also be received there by a receiving device specified at the beginning.
  • these satellites can also have other orbit positions and a different polarization of the emitted waves for the transmission of their programs.
  • a user of a receiving device specified at the outset wants to receive the program of these satellites in an area which is also in the coverage area of other satellites with a different polarization and / or orbit position, it is necessary that the polarization and / or the setting of the receiving antenna be switchable.
  • a receiving device specified at the beginning is known, for example, from the publication "Die Brücke von Struktur” No. 88, edition 2/1981 from Hirschmann, pages 3 to 9.
  • an antenna-side circuit device which is referred to as an external module, is connected to the parabolic antenna and can be switched over in an expansion stage to the reception of left-handed or right-handed circularly polarized waves.
  • the receiver device connected to the antenna-side circuit device of the known receiving device via a coaxial antenna line consists of an internal module for individual systems with a tunable frequency converter and with a frequency demodulator and a television receiver.
  • the desired reception channel of satellite broadcasting can be set on the tuner of the frequency converter.
  • antennas for receiving right-handed or left-handed circular-polarized waves are known which, depending on the direction of rotation of the waves, switch two antenna halves in parallel or antiparallel by means of a relay unit.
  • a multi-core control cable connects the relay unit of the antenna with an operating device.
  • An arrangement known from US Pat. No. 2,861,265 contains a rotor unit with a rotatable receiving antenna and a receiving unit with a receiving device and an adjusting device for adjusting the rotational position of the antenna, which is separated from the rotor unit via two lines.
  • the rotor unit contains a motor which rotates the antenna via a transmission and which is supplied with current by a power supply device via the two lines connecting the two units.
  • An interrupter contact controlled by the motor in the rotor unit generates current switching signals for a rotary position indicator in the receiving unit.
  • the direction of rotation of the antenna is determined by the level of the supply current.
  • the antenna signals are routed from the antenna to the receiver via the supply lines. In the rotor and the receiver unit, the antenna signals are separated from the power supply by low and high pass filters.
  • the invention is based on the object of transmitting the control commands for switching in the antenna-side circuit device or on the antenna without additional control and supply lines from the receiver device to the antenna-side circuit device in a receiving device of the type specified at the outset.
  • the object is achieved according to the invention by the characterizing features of claim 1 in an advantageous manner.
  • the invention has the particular advantage that in addition to the antenna line, no further lines, in particular control lines, have to be laid between the antenna-side circuit device and the receiver device. This saves additional installation work, particularly in the case of a building installation, and avoids additional sources of interference for the receiving device.
  • the satellite radio receiving device shown in the single figure of the drawing contains a parabolic antenna 1, which is connected via two short lines 2 and 3 to the input of a polarization converter 4 of an antenna-side circuit device 5.
  • the antenna-side circuit device can be an integral part of the parabolic antenna or, as in the exemplary embodiment shown, is arranged in the immediate vicinity of the parabolic antenna and, following the polarization converter, contains a frequency converter 6 which, after signal amplification, converts the frequency received by the parabolic antenna into a on a coaxial cable transmittable frequency in the frequency range of 1 GHz.
  • the output 7 of the antenna-side circuit device 5 connects a coaxial antenna line 8 to the input 9 of a receiver device 10, which essentially has a tunable frequency converter 11, a frequency demodulator 12 and one to the output of the Frequency demodulator connected playback device 13 for image and / or sound reproduction.
  • the parabolic antenna 1 is designed for the reception of circular right-handed and circular left-handed waves, of which the signals of the former waves reach the input of the polarization converter 4 via line 2 and the signals of the latter waves via line 3.
  • the polarization converter contains a polarization switch which is switched by a polarization switch 14 in accordance with the control commands at its control inputs 15 and 16 and connects either the antenna output via line 2 or the other antenna output via line 3 to the input of frequency converter 6.
  • the parabolic antenna 1 is the embodiment shown by means of an antenna transmission 17 according to the control commands at its control inputs 18 and 19 on two receiving positions.
  • the reception setting of the parabolic antenna 1 and the switching state of the antenna-side circuit device 5 is dependent on the reception channel which is set on a channel selection device 20 of the tunable frequency converter 11 of the receiver device 10. Accordingly, the channel selection device generates control commands for setting the parabolic antenna and the antenna-side circuit device. These control commands are transmitted from the receiver device 10 to the antenna-side circuit device 5 via the antenna line 8.
  • a coupling arrangement 21 is connected to the input 9 of the receiver device, which converts the control commands generated by the channel selection device 20 via control lines 22 into a short pulse telegram and couples this into the antenna line 8.
  • the antenna-side circuit device 5 contains a decoupling arrangement 23 which is connected to its output 7 and which receives, recognizes the pulse telegrams and converts them into control commands at its outputs 24 to 27. These control commands arrive at the control inputs 15, 16 and 18, 19 of the polarization switch 14 and the antenna transmission 17 and trigger the antenna-side settings associated with the channel set on the channel selection device.
  • the pulse telegrams are so short that the interruption of normal image and / or sound transmission, which they cause on the antenna line, is hardly noticed by the user of the receiving device.

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Relay Systems (AREA)

Claims (4)

1. Equipement de réception pour diffusion directe par satellite comprenant:
- au moins une antenne dont la polarité est commutable (1),
- ainsi qu'un agencement de circuits associé à l'antenne (5), comprenant, outre un commutateur d'antenne (17, 18, 19) et/ou un convertisseur de polarisation (4), un convertisseur de fréquence (6),
- et un équipement récepteur, pour la reproduction d'image et/ou de son qui, par l'intermédiaire de la ligne d'antenne (8), est connecté à la sortie de l'agencement de circuits asocié à l'antenne (5) et qui peut être accordé sur divers canaux pouvant être reçus par l'antenne,
caractérisé en ce que,
- le câble d'antenne (8) sert en même temps de ligne de commande pour les ordres de commande produits par les circuits d'accord dans le dispositif d'accord (20) de l'équipement récepteur (10), afin de sélectionner les états de fonctionnement correspondants de l'antenne (1) et/ou de l'agencement de circuits associé à l'antenne (5),
- l'entrée (9) de l'équipement récepteur comprend un agencement de couplage d'entrée (21) pour coupler lesdits ordres de commande sur le câble d'antenne,
- la sortie (7) de l'agencement de circuits associé à l'antenne comprend un agencement de couplage de sortie (23) par lequel les ordres de commande sur le câble d'antenne sont reconnus, extraits et convertis en ordres de commutation.
2. Equipement conforme à la revendication 1, caractérisé en ce que lesdits ordres de commande sur le câble d'antenne (8) sont des trains d'impulsions courtes dont la durée n'interrompt la transmission normale d'image ou de son sur le câble d'antenne, que d'une façon à peine observable.
3. Equipement conforme à la revendication 1 ou 2, caractérisé en ce que l'agencement de circuits côté antenne (5) comprend une mémoire d'ordres de commande (28).
4. Equipement conforme à la revendication 1, caractérisé en ce que lesdits ordres de commande sont modulés sur une fréquence sensiblement différente de la fréquence de transmission à la sortie (7) de l'agencement de circuits associé à l'antenne (5) et qui ne peut pas être reçue par l'équipement récepteur (10).
EP82109906A 1981-10-29 1982-10-27 Dispositif de réception pour la réception des émissions d'un satellite Expired EP0078494B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82109906T ATE32153T1 (de) 1981-10-29 1982-10-27 Empfangseinrichtung zum empfang von satellitenrundfunk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3142892A DE3142892C2 (de) 1981-10-29 1981-10-29 Empfangseinrichtung zum Empfang von Satellitenrundfunk
DE3142892 1981-10-29

Publications (3)

Publication Number Publication Date
EP0078494A2 EP0078494A2 (fr) 1983-05-11
EP0078494A3 EP0078494A3 (en) 1984-04-11
EP0078494B1 true EP0078494B1 (fr) 1988-01-20

Family

ID=6145107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109906A Expired EP0078494B1 (fr) 1981-10-29 1982-10-27 Dispositif de réception pour la réception des émissions d'un satellite

Country Status (3)

Country Link
EP (1) EP0078494B1 (fr)
AT (1) ATE32153T1 (fr)
DE (2) DE3142892C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521732A2 (fr) * 1991-07-04 1993-01-07 Sony Corporation Système d'antenne pour la réception de signaux de diffusion ou communication d'un satellite

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861265A (en) * 1953-06-12 1958-11-18 Alliance Mfg Company Division Rotator
DE1238967B (de) * 1965-10-22 1967-04-20 Telefunken Patent Spannungsversorgungsschaltung fuer Antennenverstaerker
DE2005674A1 (de) * 1970-02-07 1971-08-12 Rohde & Schwarz Anordnung zum Übertragen einer konstanten Speisegleichspannung und einer Steuergrosse über eine Zweidrahtleitung zu einem abge setzten elektrischen Gerat
GB2026204B (en) * 1978-05-31 1982-09-02 Montorio Salvatore Device for the remote control of the angular position of a rotable aerial

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521732A2 (fr) * 1991-07-04 1993-01-07 Sony Corporation Système d'antenne pour la réception de signaux de diffusion ou communication d'un satellite
EP0521732B1 (fr) * 1991-07-04 1998-12-23 Sony Corporation Système d'antenne pour la réception de signaux de diffusion ou communication d'un satellite

Also Published As

Publication number Publication date
ATE32153T1 (de) 1988-02-15
DE3142892C2 (de) 1985-03-07
EP0078494A3 (en) 1984-04-11
EP0078494A2 (fr) 1983-05-11
DE3142892A1 (de) 1983-05-19
DE3278027D1 (en) 1988-02-25

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