GB800305A - Improvements in or relating to systems for relaying and transmitting television programmes - Google Patents

Improvements in or relating to systems for relaying and transmitting television programmes

Info

Publication number
GB800305A
GB800305A GB9653/55A GB965355A GB800305A GB 800305 A GB800305 A GB 800305A GB 9653/55 A GB9653/55 A GB 9653/55A GB 965355 A GB965355 A GB 965355A GB 800305 A GB800305 A GB 800305A
Authority
GB
United Kingdom
Prior art keywords
frequency
klystron
crystal
april
stabilized
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
GB9653/55A
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.)
Raytheon Co
Original Assignee
Raytheon Manufacturing Co
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 Raytheon Manufacturing Co filed Critical Raytheon Manufacturing Co
Publication of GB800305A publication Critical patent/GB800305A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/02—Arrangements for relaying broadcast information
    • H04H20/04—Arrangements for relaying broadcast information from field pickup units [FPU]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Radio Relay Systems (AREA)

Abstract

800,305. Television. RAYTHEON MANUFACTURING CO. April 1, 1955 [April 8, 1954], No. 9653/55. Class 40 (3). [Also in Group XL (c)] Television programmes are relayed from a location remote from a broadcasting station by portable transmitting equipment beaming, in the direction of the station, a single high-frequency carrier frequency modulated by video signals combined with a frequency-modulated sound subcarrier. Video output (at 46) from a camera and a frequency-modulated sound subcarrier with mean frequency retroactively stabilized are produced from a portable container and applied through a cable 26 to another portable container located adjacent a highly situated parabolic radiating antenna 109. The second unit may contain a transmitting klystron 106 mounted on a waveguide 107 having connected to it a wavemeter cavity resonator 128 and a crystal detector 124. The arrangement is such that coincidence of the unmodulated frequency of the klystron with the resonance peak X of the resonator 128 and of its frequency sweep within one flank X-Y of the resonance curve are continuously checked by a monitor 121 responsive to the crystal output. The klystron frequency is also stabilized by the crystal 124. The connecting cable 26 between the two units may also be used for intercommunication between their positions.
GB9653/55A 1954-04-08 1955-04-01 Improvements in or relating to systems for relaying and transmitting television programmes Expired GB800305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US800305XA 1954-04-08 1954-04-08

Publications (1)

Publication Number Publication Date
GB800305A true GB800305A (en) 1958-08-27

Family

ID=22154801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9653/55A Expired GB800305A (en) 1954-04-08 1955-04-01 Improvements in or relating to systems for relaying and transmitting television programmes

Country Status (1)

Country Link
GB (1) GB800305A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149624A (en) * 1983-11-07 1985-06-12 Vickers Plc Apparatus for testing electromagnetic radiation responsive devices
FR2596228A1 (en) * 1986-03-18 1987-09-25 France Etat Method and device for modulating television signals, in particular of the D2-MAC/Packet type
EP0250274A1 (en) * 1987-03-19 1987-12-23 France Telecom Method and device for modulating television signals, especially those of the D2-MAC-packet type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149624A (en) * 1983-11-07 1985-06-12 Vickers Plc Apparatus for testing electromagnetic radiation responsive devices
FR2596228A1 (en) * 1986-03-18 1987-09-25 France Etat Method and device for modulating television signals, in particular of the D2-MAC/Packet type
EP0250274A1 (en) * 1987-03-19 1987-12-23 France Telecom Method and device for modulating television signals, especially those of the D2-MAC-packet type

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