JPS5799886A - Vtr automatic control circuit with hue fine adjusting circuit - Google Patents

Vtr automatic control circuit with hue fine adjusting circuit

Info

Publication number
JPS5799886A
JPS5799886A JP17757080A JP17757080A JPS5799886A JP S5799886 A JPS5799886 A JP S5799886A JP 17757080 A JP17757080 A JP 17757080A JP 17757080 A JP17757080 A JP 17757080A JP S5799886 A JPS5799886 A JP S5799886A
Authority
JP
Japan
Prior art keywords
hue
circuit
output
automatic control
fine adjusting
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
JP17757080A
Other languages
Japanese (ja)
Inventor
Kazuo Kitsuka
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP17757080A priority Critical patent/JPS5799886A/en
Publication of JPS5799886A publication Critical patent/JPS5799886A/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
    • H04N9/643—Hue control means, e.g. flesh tone control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To enable hue fine adjustment in excellent manner even with a hude circuit of insufficient tracking, by changing the hue so that the error output can be zeroed, in a voltage controlled type hue circuit. CONSTITUTION:A filter 13 passing through only a chroma signal out of a video signal Vi is provided, and a chroma demodulator 12 amplifying signals (B-Y), (G-Y), (R-Y) and an amplifier 16 amplifying the chroma signal passing through the filter 13 are provided. Next, a hue fine adjusting circuit 8 is provided, and when the output is zero, the (R-Y) signa 19H(R-Y) of the 19th horizontal scanning line is inputted to an error amplifier 2 via a clamp circuit 1 to generate the output corresponding to the voltage difference with the reference voltage. This output is applied to a hue circuit 7 via a switch 5 and a storage circuit 6, the phase is changed accordingly and the amplitude of the (R-Y) signal is also changed. This state continues until the error output is zero, the automatic control is finished and the standard hue can be obtained.
JP17757080A 1980-12-15 1980-12-15 Vtr automatic control circuit with hue fine adjusting circuit Pending JPS5799886A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17757080A JPS5799886A (en) 1980-12-15 1980-12-15 Vtr automatic control circuit with hue fine adjusting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17757080A JPS5799886A (en) 1980-12-15 1980-12-15 Vtr automatic control circuit with hue fine adjusting circuit

Publications (1)

Publication Number Publication Date
JPS5799886A true JPS5799886A (en) 1982-06-21

Family

ID=16033271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17757080A Pending JPS5799886A (en) 1980-12-15 1980-12-15 Vtr automatic control circuit with hue fine adjusting circuit

Country Status (1)

Country Link
JP (1) JPS5799886A (en)

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