JPS5561185A - Chroma circuit - Google Patents

Chroma circuit

Info

Publication number
JPS5561185A
JPS5561185A JP13399278A JP13399278A JPS5561185A JP S5561185 A JPS5561185 A JP S5561185A JP 13399278 A JP13399278 A JP 13399278A JP 13399278 A JP13399278 A JP 13399278A JP S5561185 A JPS5561185 A JP S5561185A
Authority
JP
Japan
Prior art keywords
color
division circuit
transient
improve
signal
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.)
Granted
Application number
JP13399278A
Other languages
Japanese (ja)
Other versions
JPS6129594B2 (en
Inventor
Mamoru Sugita
Masaru Noda
Toshio Murakami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13399278A priority Critical patent/JPS5561185A/en
Publication of JPS5561185A publication Critical patent/JPS5561185A/en
Publication of JPS6129594B2 publication Critical patent/JPS6129594B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To increase the video quality of receiver in NTSC system, by stopping the operation of the division circuit to improve the reproducibility of color at fine section, when the output of the division circuit to improve the transient change in color is in excess of a given value.
CONSTITUTION: The division circuit 39 to improve the transient change in color outputs the signal CLT/YLT by dividing the transient of color CLT with the transient YLT of luminance signal. Further, the division circuit 40 to improve the color reproducibility of fine section divides the chroma signal CL with the low frequency luminance signal YL and outputs the signal CL/YL. Further, when the output of the division circuit 39 exceeds a given value, the gate stopping the operation of the division circuit 40 is provided. Thus, the transient improvement of color and that of color reproducibility for fine section can both be established for execution.
COPYRIGHT: (C)1980,JPO&Japio
JP13399278A 1978-10-31 1978-10-31 Chroma circuit Granted JPS5561185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13399278A JPS5561185A (en) 1978-10-31 1978-10-31 Chroma circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13399278A JPS5561185A (en) 1978-10-31 1978-10-31 Chroma circuit

Publications (2)

Publication Number Publication Date
JPS5561185A true JPS5561185A (en) 1980-05-08
JPS6129594B2 JPS6129594B2 (en) 1986-07-08

Family

ID=15117846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13399278A Granted JPS5561185A (en) 1978-10-31 1978-10-31 Chroma circuit

Country Status (1)

Country Link
JP (1) JPS5561185A (en)

Also Published As

Publication number Publication date
JPS6129594B2 (en) 1986-07-08

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