GB519558A - Improvements in or relating to systems for broadcasting multicomponent programs - Google Patents

Improvements in or relating to systems for broadcasting multicomponent programs

Info

Publication number
GB519558A
GB519558A GB11006/39A GB1100639A GB519558A GB 519558 A GB519558 A GB 519558A GB 11006/39 A GB11006/39 A GB 11006/39A GB 1100639 A GB1100639 A GB 1100639A GB 519558 A GB519558 A GB 519558A
Authority
GB
United Kingdom
Prior art keywords
receiver
sound
control
april
vision
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
GB11006/39A
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine Corp
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 Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB519558A publication Critical patent/GB519558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)

Abstract

519,558. Automatic gain control systems. HAZELTINE CORPORATION. April 11, 1939, No. 11006. Convention date, April 23, 1938. [Class 40 (v)] A television or other multiple-component broadcasting system is characterized by the feature that a number of differant transmitters 10, 11, 12 each radiate signals on individual carriers having a predetermined unmodulated amplitude relation, say between the sound and vision carriers, which is the same for all stations, the gain of both channels being automatically controlled by voltages derived from one (e.g., the sound channel). In this way the automatic control at the receiver remains equally efficient no matter to which transmitter the receiver may be tuned. At the receiver 13, control voltages derived from the signal detector 18 of the sound channel are applied to control the radio frequency 15 and frequency changer 16 of the common portion of the receiver and also the I.F. amplifiers 21, 17 of the vision and sound channels respectively. The system is applicable to the transmission of stereoscopic and binaural programmes.
GB11006/39A 1938-04-23 1939-04-11 Improvements in or relating to systems for broadcasting multicomponent programs Expired GB519558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519558XA 1938-04-23 1938-04-23

Publications (1)

Publication Number Publication Date
GB519558A true GB519558A (en) 1940-03-29

Family

ID=21974449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11006/39A Expired GB519558A (en) 1938-04-23 1939-04-11 Improvements in or relating to systems for broadcasting multicomponent programs

Country Status (2)

Country Link
FR (1) FR853343A (en)
GB (1) GB519558A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076057A (en) * 1959-04-22 1963-01-29 Westinghouse Electric Corp Broadcast stereo receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076057A (en) * 1959-04-22 1963-01-29 Westinghouse Electric Corp Broadcast stereo receiver

Also Published As

Publication number Publication date
FR853343A (en) 1940-03-15

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