JPS5561185A - Chroma circuit - Google Patents
Chroma circuitInfo
- 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
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
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) |
-
1978
- 1978-10-31 JP JP13399278A patent/JPS5561185A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6129594B2 (en) | 1986-07-08 |
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