GB1195757A - Improvements Relating to Colour Television Receivers - Google Patents

Improvements Relating to Colour Television Receivers

Info

Publication number
GB1195757A
GB1195757A GB5713468A GB5713468A GB1195757A GB 1195757 A GB1195757 A GB 1195757A GB 5713468 A GB5713468 A GB 5713468A GB 5713468 A GB5713468 A GB 5713468A GB 1195757 A GB1195757 A GB 1195757A
Authority
GB
United Kingdom
Prior art keywords
red
potentiometer
green
blue
colour television
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
GB5713468A
Inventor
Reginald Edward Gray
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.)
British Radio Corp Ltd
Original Assignee
British Radio Corp 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 British Radio Corp Ltd filed Critical British Radio Corp Ltd
Priority to GB5713468A priority Critical patent/GB1195757A/en
Priority to DE19691960229 priority patent/DE1960229B2/en
Priority to SE1650369A priority patent/SE346449B/xx
Priority to ES374114A priority patent/ES374114A1/en
Priority to CH1795769A priority patent/CH502039A/en
Publication of GB1195757A publication Critical patent/GB1195757A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
    • H04N9/20—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

1,195,757. Colour television. BRITISH RADIO CORP. Ltd. 2 Dec., 1968, No. 57134/68. Heading H4F. Relates to apparatus for increasing the proportion of either red or blue in the displayed picture of a tri-gun colour television tube while leaving at least the green substantially unaffected, said apparatus comprising means for altering the D.C. voltage level applied to the red or blue guns without affecting that applied to the green gun, said three guns being supplied by a common D.C. voltage generator. As shown in Fig. 1 the apparatus comprises a resistance network, terminal 10 being connected to the output of the high-tension D.C. voltage generator and terminals 23, 24 and 25 being connected to the first anodes of the green, red and blue guns respectively. Since the potentiometer 20 is arranged to have a very much higher resistance than that of resistors 12 and 13, movement of the slider of this potentiometer, for example to the left, will cause the potential at point A to increase very much more than the corresponding decrease at point C. Hence movement to the left causes the first anode potential of the red tube to increase without substantially affecting that of the green and blue tubes. Fig. 2 (not shown) illustrates an alternative arrangement in which a centre-tapped potentiometer is employed in place of potentiometer 20.
GB5713468A 1968-12-02 1968-12-02 Improvements Relating to Colour Television Receivers Expired GB1195757A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB5713468A GB1195757A (en) 1968-12-02 1968-12-02 Improvements Relating to Colour Television Receivers
DE19691960229 DE1960229B2 (en) 1968-12-02 1969-12-01 CIRCUIT FOR ADJUSTING THE WHITE TONE FOR THE COLOR TV RECEIVER
SE1650369A SE346449B (en) 1968-12-02 1969-12-01
ES374114A ES374114A1 (en) 1968-12-02 1969-12-01 Improvements Relating to Colour Television Receivers
CH1795769A CH502039A (en) 1968-12-02 1969-12-02 Color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5713468A GB1195757A (en) 1968-12-02 1968-12-02 Improvements Relating to Colour Television Receivers

Publications (1)

Publication Number Publication Date
GB1195757A true GB1195757A (en) 1970-06-24

Family

ID=10478450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5713468A Expired GB1195757A (en) 1968-12-02 1968-12-02 Improvements Relating to Colour Television Receivers

Country Status (5)

Country Link
CH (1) CH502039A (en)
DE (1) DE1960229B2 (en)
ES (1) ES374114A1 (en)
GB (1) GB1195757A (en)
SE (1) SE346449B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967314A (en) * 1975-09-19 1976-06-29 Oneida Electronics Color brightness control
US4348688A (en) * 1979-08-31 1982-09-07 International Business Machines Corporation Multibeam cathode ray tube apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567348B2 (en) * 1973-04-25 1981-02-17
US5799551A (en) * 1997-03-18 1998-09-01 Impex Handelsgesellschaft Mbh (F.E.) Ltd. Corkscrew

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967314A (en) * 1975-09-19 1976-06-29 Oneida Electronics Color brightness control
US4348688A (en) * 1979-08-31 1982-09-07 International Business Machines Corporation Multibeam cathode ray tube apparatus

Also Published As

Publication number Publication date
DE1960229B2 (en) 1972-04-20
SE346449B (en) 1972-07-03
CH502039A (en) 1971-01-15
DE1960229A1 (en) 1970-07-09
ES374114A1 (en) 1972-03-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee