JPS5758490A - Color temperature controller for picture tube - Google Patents

Color temperature controller for picture tube

Info

Publication number
JPS5758490A
JPS5758490A JP13352380A JP13352380A JPS5758490A JP S5758490 A JPS5758490 A JP S5758490A JP 13352380 A JP13352380 A JP 13352380A JP 13352380 A JP13352380 A JP 13352380A JP S5758490 A JPS5758490 A JP S5758490A
Authority
JP
Japan
Prior art keywords
level
circuit
circuits
nonlinear
temperature controller
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.)
Pending
Application number
JP13352380A
Other languages
Japanese (ja)
Inventor
Takafumi Okada
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP13352380A priority Critical patent/JPS5758490A/en
Publication of JPS5758490A publication Critical patent/JPS5758490A/en
Pending 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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control

Abstract

PURPOSE:To control the entire signal level without change of the rate of an original color signal, by moving the changing point of characteristics of a nonlinear circuit according to the change in a video signal level, through the porvision of a clamp circuit and process circuit at the rear stage of the nonlinear circuit. CONSTITUTION:A chroma temperature controller to a picture tube 30 is constituted by inserting nonlinear circuits 40R, 40G in which the output/input of blue primary color signal voltage in white level is greater than that of red voltage at a prescribed level of input level, to a front stage of a video output circuit 20. A clamp circuit 50 and a process circuit 60 are connected between the output circuit 20 of this controller and the circuits 40R, 40G, and this process circuit 60 is provided with a luminance volume 60Y and a picture volume 60P. When a video signal level is varied through the adjustment of the volumes 60Y, 60P by the user, the changing point of the circuits 40R, 40G is moved according to the level and the entire level is controlled without changing the rate of the primary color signal.
JP13352380A 1980-09-25 1980-09-25 Color temperature controller for picture tube Pending JPS5758490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13352380A JPS5758490A (en) 1980-09-25 1980-09-25 Color temperature controller for picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13352380A JPS5758490A (en) 1980-09-25 1980-09-25 Color temperature controller for picture tube

Publications (1)

Publication Number Publication Date
JPS5758490A true JPS5758490A (en) 1982-04-08

Family

ID=15106774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13352380A Pending JPS5758490A (en) 1980-09-25 1980-09-25 Color temperature controller for picture tube

Country Status (1)

Country Link
JP (1) JPS5758490A (en)

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