JPS5564494A - Color video signal recorder - Google Patents
Color video signal recorderInfo
- Publication number
- JPS5564494A JPS5564494A JP13804478A JP13804478A JPS5564494A JP S5564494 A JPS5564494 A JP S5564494A JP 13804478 A JP13804478 A JP 13804478A JP 13804478 A JP13804478 A JP 13804478A JP S5564494 A JPS5564494 A JP S5564494A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- video signals
- low
- color video
- bpf5
- 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
Abstract
PURPOSE: To reduce beat disturbance in reproduction of color video signals on a SECAM system.
CONSTITUTION: Color video signals from terminal 1 are inputted to LPF2 and BPF5 and luminance signals separated from video signals by LPF2 are FM-modulated 3 and then applied to adder 9 after unneeded components are removed 2. Video signals separated by BPF5, on the other hand, are converted into a low frequency by frequency converter 6 by using the output of OSC8 and then applied as a low- frequency conversion color signal to adder 9 through LPF7, and the addition output is supplied to magnetic head 11 by way of amplifier 10. As converter 6, a balanced modulator, for example, is used and when a low-frequency converted chrominance subcarrier frequency is denoted (fc) and a horizontal frequency (fH), (fc) is selected as shown by formula (4) to make beat disturbance between (fc) and 2(fc) inconspicuous, thereby obtaining reproduced screens of high quality.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13804478A JPS5564494A (en) | 1978-11-09 | 1978-11-09 | Color video signal recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13804478A JPS5564494A (en) | 1978-11-09 | 1978-11-09 | Color video signal recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564494A true JPS5564494A (en) | 1980-05-15 |
JPS6214997B2 JPS6214997B2 (en) | 1987-04-04 |
Family
ID=15212690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13804478A Granted JPS5564494A (en) | 1978-11-09 | 1978-11-09 | Color video signal recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564494A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54121021A (en) * | 1978-03-13 | 1979-09-19 | Sanyo Electric Co Ltd | Secam signal recording system |
-
1978
- 1978-11-09 JP JP13804478A patent/JPS5564494A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54121021A (en) * | 1978-03-13 | 1979-09-19 | Sanyo Electric Co Ltd | Secam signal recording system |
Also Published As
Publication number | Publication date |
---|---|
JPS6214997B2 (en) | 1987-04-04 |
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