GB525967A - Improvements relating to television receivers - Google Patents

Improvements relating to television receivers

Info

Publication number
GB525967A
GB525967A GB7085/39A GB708539A GB525967A GB 525967 A GB525967 A GB 525967A GB 7085/39 A GB7085/39 A GB 7085/39A GB 708539 A GB708539 A GB 708539A GB 525967 A GB525967 A GB 525967A
Authority
GB
United Kingdom
Prior art keywords
increased
magnification
television receivers
improvements relating
scanning
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
GB7085/39A
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.)
Kolster Brandes Ltd
Original Assignee
Kolster Brandes Ltd
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 Kolster Brandes Ltd filed Critical Kolster Brandes Ltd
Publication of GB525967A publication Critical patent/GB525967A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/54—Arrangements for centring ray or beam
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
    • H03K6/02—Amplifying pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/227—Centering
    • 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
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Synchronizing For Television (AREA)
  • Details Of Television Scanning (AREA)
  • Television Receiver Circuits (AREA)

Abstract

525,967. Television. KOLSTER-BRANDES, Ltd., PRICHARD, R. E., and SMYTH, C. N. March 3, 1939, No. 7085. Addition to 520,235. [Class 40 (iii)] The mean intensity of the scanning ray, or the contrast of the reproduced image, or the amplitude of the lower frequencies of the associated sound, are increased as the magnification of the part of the image reproduced is increased by adjusting the amplitudes of the scanning deflections, as described in the parent Specification. To control the brightness, a member, which changes the voltage on either the modulating electrode or the final anode of the reproducing cathode-ray tube, is ganged with the magnification control. Specification 491,502 is referred to.
GB7085/39A 1938-10-11 1939-03-03 Improvements relating to television receivers Expired GB525967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB233059X 1938-10-11

Publications (1)

Publication Number Publication Date
GB525967A true GB525967A (en) 1940-09-09

Family

ID=10193472

Family Applications (4)

Application Number Title Priority Date Filing Date
GB29464/38A Expired GB520235A (en) 1938-10-11 1938-10-11 Improvements in or relating to television receivers
GB33949/38A Expired GB521522A (en) 1938-10-11 1938-11-22 Improvements relating to television systems
GB7085/39A Expired GB525967A (en) 1938-10-11 1939-03-03 Improvements relating to television receivers
GB8175/39A Expired GB526361A (en) 1938-10-11 1939-03-14 Improvements relating to television receivers

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB29464/38A Expired GB520235A (en) 1938-10-11 1938-10-11 Improvements in or relating to television receivers
GB33949/38A Expired GB521522A (en) 1938-10-11 1938-11-22 Improvements relating to television systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8175/39A Expired GB526361A (en) 1938-10-11 1939-03-14 Improvements relating to television receivers

Country Status (4)

Country Link
BE (3) BE436648A (en)
CH (1) CH233059A (en)
FR (4) FR861290A (en)
GB (4) GB520235A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679550A (en) * 1947-12-17 1954-05-25 Louis W Parker Television receiver with regulated high-voltage power supply
US2510670A (en) * 1949-02-10 1950-06-06 Garod Radio Corp Scan magnitude control for cathode-ray tubes
US4317133A (en) * 1980-09-29 1982-02-23 Rca Corporation Two-loop horizontal AFPC system

Also Published As

Publication number Publication date
BE436648A (en) 1939-11-30
GB520235A (en) 1940-04-18
FR50966E (en) 1941-05-19
FR51043E (en) 1941-05-28
CH233059A (en) 1944-06-30
GB526361A (en) 1940-09-17
BE437228A (en)
FR861290A (en) 1941-02-05
FR51049E (en) 1941-05-28
BE476203A (en)
GB521522A (en) 1940-05-23

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