EP0314930A3 - Method and apparatus for transmitting control signals to actuators in television satellite receivers - Google Patents

Method and apparatus for transmitting control signals to actuators in television satellite receivers Download PDF

Info

Publication number
EP0314930A3
EP0314930A3 EP88116533A EP88116533A EP0314930A3 EP 0314930 A3 EP0314930 A3 EP 0314930A3 EP 88116533 A EP88116533 A EP 88116533A EP 88116533 A EP88116533 A EP 88116533A EP 0314930 A3 EP0314930 A3 EP 0314930A3
Authority
EP
European Patent Office
Prior art keywords
actuators
cable
transmitting
control signals
transmitting control
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.)
Withdrawn
Application number
EP88116533A
Other languages
German (de)
French (fr)
Other versions
EP0314930A2 (en
Inventor
Raffaello Pini
Francesco Banfi
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.)
BRIONVEGA SpA
Original Assignee
BRIONVEGA SpA
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 BRIONVEGA SpA filed Critical BRIONVEGA SpA
Publication of EP0314930A2 publication Critical patent/EP0314930A2/en
Publication of EP0314930A3 publication Critical patent/EP0314930A3/en
Withdrawn legal-status Critical Current

Links

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
    • H01Q3/005—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using remotely controlled antenna positioning or scanning

Landscapes

  • Selective Calling Equipment (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The apparatus comprises: at least one receiving antenna (16) having one or more actuators (15); a coaxial transmission cable (13); at least one internal unit (9); first circuit means (1) for transmitting control signals to one end of the cable; second circuit means (17) for receiving and decoding the signals received at the other end of the cable and adapted to operate the actuators. The information for operating the actuators being obtained by modulating the direct tension, powering the external unit, with adapted pulses. The direct power tension normally overlaps the radiofrequency signal in the coaxial transmission cable and the modulation depth is such that it has no effect on the external unit powering. This allows, for transmitting the control signal, to use the same single coaxial cable for transmitting the radiofrequency signals.
EP88116533A 1987-11-02 1988-10-06 Method and apparatus for transmitting control signals to actuators in television satellite receivers Withdrawn EP0314930A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2247987 1987-11-02
IT22479/87A IT1223039B (en) 1987-11-02 1987-11-02 PROCEDURE AND EQUIPMENT FOR SENDING COMMAND SIGNALS TO ACTUATORS IN TELEVISION RECEPTION SYSTEMS FROM SATELLITE

Publications (2)

Publication Number Publication Date
EP0314930A2 EP0314930A2 (en) 1989-05-10
EP0314930A3 true EP0314930A3 (en) 1990-05-09

Family

ID=11196828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116533A Withdrawn EP0314930A3 (en) 1987-11-02 1988-10-06 Method and apparatus for transmitting control signals to actuators in television satellite receivers

Country Status (2)

Country Link
EP (1) EP0314930A3 (en)
IT (1) IT1223039B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920007075B1 (en) * 1989-12-20 1992-08-24 삼성전자 주식회사 Circuit for generating pulse of polarotar in satellite telecommunication receiver
GB9103713D0 (en) * 1991-02-22 1991-04-10 Amstrad Plc Improvements relating to television systems
JPH04324788A (en) * 1991-04-24 1992-11-13 Sharp Corp Satellite broadcast reception system
GB2271669A (en) * 1992-10-02 1994-04-20 David Arends Control of antennas
JP2988844B2 (en) * 1995-04-25 1999-12-13 シャープ株式会社 Switching circuit for satellite broadcast converter.
US6108526A (en) * 1997-05-07 2000-08-22 Lucent Technologies, Inc. Antenna system and method thereof
EP0918367A3 (en) * 1997-11-19 2004-01-21 RR ELEKTRONISCHE GERÄTE GmbH & Co. KG Tracking control system and method for alignment of a pivoting reflector antenna with a radiating source
EP2286520B1 (en) 2008-06-12 2016-12-14 Sato Holdings Corporation Antenna design and interrogator system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131839A (en) * 1977-08-19 1978-12-26 Springer Barry R System for multistation remote position indication and control
US4301397A (en) * 1980-04-24 1981-11-17 Cornell-Dubilier Electric Corporation DC Antenna rotator system
JPS609202A (en) * 1983-06-28 1985-01-18 Sumitomo Electric Ind Ltd Reception level meter for adjusting reception antenna direction
US4538175A (en) * 1980-07-11 1985-08-27 Microdyne Corporation Receive only earth satellite ground station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131839A (en) * 1977-08-19 1978-12-26 Springer Barry R System for multistation remote position indication and control
US4301397A (en) * 1980-04-24 1981-11-17 Cornell-Dubilier Electric Corporation DC Antenna rotator system
US4538175A (en) * 1980-07-11 1985-08-27 Microdyne Corporation Receive only earth satellite ground station
JPS609202A (en) * 1983-06-28 1985-01-18 Sumitomo Electric Ind Ltd Reception level meter for adjusting reception antenna direction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 118 (E-316)[1841], 23rd May 1985; & JP-A-60 009 202 (SUMITOMO) 18-01-1985 *

Also Published As

Publication number Publication date
IT8722479A0 (en) 1987-11-02
IT1223039B (en) 1990-09-12
EP0314930A2 (en) 1989-05-10

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