GB715216A - Improvements in or relating to television broadcast receivers - Google Patents

Improvements in or relating to television broadcast receivers

Info

Publication number
GB715216A
GB715216A GB212252A GB212252A GB715216A GB 715216 A GB715216 A GB 715216A GB 212252 A GB212252 A GB 212252A GB 212252 A GB212252 A GB 212252A GB 715216 A GB715216 A GB 715216A
Authority
GB
United Kingdom
Prior art keywords
components
frequency
television broadcast
jan
cathode
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
GB212252A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB212252A priority Critical patent/GB715216A/en
Priority to FR1079016D priority patent/FR1079016A/en
Publication of GB715216A publication Critical patent/GB715216A/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
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Abstract

715,216. Television. GENERAL ELECTRIC CO., Ltd., and BRABHAM, B. S. Jan. 21, 1953 [Jan. 25, 1952], No. 2122/52. Class 40 (3). [Also in Group XL(c)] The effects of " aeroplane flutter " in a television broadcast receiver are reduced by means of a filter 6-8 having a lower cut-off frequency of 0.1 c/s and an upper cut-off frequency between 5 c/s and the frame frequency which derives the flutter components from the video signal output and applies them to a stage in the receiver to reduce the amplitude of such components in the reproduced image. As illustrated, the components are applied to the control grids of valves in the R.F. and I.F. stages 2 in a manner similar to normal automatic gain control. In another embodiment, Fig. 1 (not shown), the components are applied to the modulator of the cathode-ray tube 3 so as to oppose the normal tube input appearing on the cathode.
GB212252A 1952-01-25 1952-01-25 Improvements in or relating to television broadcast receivers Expired GB715216A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB212252A GB715216A (en) 1952-01-25 1952-01-25 Improvements in or relating to television broadcast receivers
FR1079016D FR1079016A (en) 1952-01-25 1953-01-23 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB212252A GB715216A (en) 1952-01-25 1952-01-25 Improvements in or relating to television broadcast receivers

Publications (1)

Publication Number Publication Date
GB715216A true GB715216A (en) 1954-09-08

Family

ID=9733986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB212252A Expired GB715216A (en) 1952-01-25 1952-01-25 Improvements in or relating to television broadcast receivers

Country Status (2)

Country Link
FR (1) FR1079016A (en)
GB (1) GB715216A (en)

Also Published As

Publication number Publication date
FR1079016A (en) 1954-11-25

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