JPS5511608A - Frequency characteristics improving circuit for chrominance signal - Google Patents
Frequency characteristics improving circuit for chrominance signalInfo
- Publication number
- JPS5511608A JPS5511608A JP8372178A JP8372178A JPS5511608A JP S5511608 A JPS5511608 A JP S5511608A JP 8372178 A JP8372178 A JP 8372178A JP 8372178 A JP8372178 A JP 8372178A JP S5511608 A JPS5511608 A JP S5511608A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- sec
- delay
- signals
- 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
Links
Abstract
PURPOSE: To realize reduction of the delay elements in an extremely simple way and thus to simplify the circuit constitution by supplying the luminance signals to the control circuit immediately after the video detection.
CONSTITUTION: The correct color correction is impossible unless a perfect agreement is obtained between color difference signal (R - Y)L - (B - Y)L, control signals XA∼XC and luminance signal Y supplied to frequency characteristics improving circuit 100 for the chrominance signal. In this connection, both signal Y and signal (R - Y)L - (B - Y)L must be delayed by 2 sec. in accordance to the delay time (about 2 sec.) of signals XA∼XC in case control circuit 40 is used. Here luminance signal SO obtained from video detection circuit 101 and right after the video detection is used for luminace signal Y which is to be supplied to circuit 40. At the same time, delay element 110 featuring the delay time of 1 sec. is provided at the transmission line of the detection output and at the front step of trap circuit 102 as well as delay element 104. As a result, the number of the delay elements can be decreased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8372178A JPS5511608A (en) | 1978-07-10 | 1978-07-10 | Frequency characteristics improving circuit for chrominance signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8372178A JPS5511608A (en) | 1978-07-10 | 1978-07-10 | Frequency characteristics improving circuit for chrominance signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5511608A true JPS5511608A (en) | 1980-01-26 |
Family
ID=13810368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8372178A Pending JPS5511608A (en) | 1978-07-10 | 1978-07-10 | Frequency characteristics improving circuit for chrominance signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5511608A (en) |
-
1978
- 1978-07-10 JP JP8372178A patent/JPS5511608A/en active Pending
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