JPS6472689A - System for modulating chrominance signal of color television - Google Patents
System for modulating chrominance signal of color televisionInfo
- Publication number
- JPS6472689A JPS6472689A JP22830587A JP22830587A JPS6472689A JP S6472689 A JPS6472689 A JP S6472689A JP 22830587 A JP22830587 A JP 22830587A JP 22830587 A JP22830587 A JP 22830587A JP S6472689 A JPS6472689 A JP S6472689A
- Authority
- JP
- Japan
- Prior art keywords
- band
- signal
- component
- frequency
- chrominance 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.)
- Pending
Links
Abstract
PURPOSE:To enlarge the band of a chrominance signal and to improve picture quality, by permitting a Q signal having frequency component higher than an NTSC specification to modulate other auxiliary carrier (frequency fQ) and to overlap it in a present band. CONSTITUTION:The Q signal having 1.5MHz of a band width modulates the auxiliary carrier fQ. Consequently, the lower wave band of the modulated component in 0.5-1.5MHz among the Q signals is distributed in 4.2-3.2 MHz. This is set to QH' meaning 'high band part of modulated Q signal' and it is overlapped in the present band of 4.2MHz. It is desirable that the QH signal is arranged in the frequency having small power component among luminance signals for making the QH' to be separated on a reception side. Thus, the band of the Q signal is enlarged only by dividing a part of the luminance signals (oblique component), and picture quality can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22830587A JPS6472689A (en) | 1987-09-14 | 1987-09-14 | System for modulating chrominance signal of color television |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22830587A JPS6472689A (en) | 1987-09-14 | 1987-09-14 | System for modulating chrominance signal of color television |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6472689A true JPS6472689A (en) | 1989-03-17 |
Family
ID=16874361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22830587A Pending JPS6472689A (en) | 1987-09-14 | 1987-09-14 | System for modulating chrominance signal of color television |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6472689A (en) |
-
1987
- 1987-09-14 JP JP22830587A patent/JPS6472689A/en active Pending
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