JPS6448590A - Color frame detector - Google Patents
Color frame detectorInfo
- Publication number
- JPS6448590A JPS6448590A JP62204677A JP20467787A JPS6448590A JP S6448590 A JPS6448590 A JP S6448590A JP 62204677 A JP62204677 A JP 62204677A JP 20467787 A JP20467787 A JP 20467787A JP S6448590 A JPS6448590 A JP S6448590A
- Authority
- JP
- Japan
- Prior art keywords
- latch
- frequency
- signal
- color frame
- output
- 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 always stably attain the color frame detection by executing plural detections (latch), generating a resetting signal to invert the output of a frequency-dividing means only when it is discriminated that the detections are erroneous continuously at plural times and impressing it to the frequency- dividing means. CONSTITUTION:A latch 14 is provided so that the output of a latch 11 to latch the phase of a subcarrier can be held even by a next latch point, and further, a latch 15 is provided so as to hold the signal even at the next latch point. Only when the output signal of the latch 11 goes to the high level at plural times continuously, a resetting signal is outputted to a 1/2-frequency-divider 13 from a resetting pulse generator 16. Thus, a correct color frame signal is stably outputted from the 1/2 frequency-divider 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204677A JPS6448590A (en) | 1987-08-18 | 1987-08-18 | Color frame detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204677A JPS6448590A (en) | 1987-08-18 | 1987-08-18 | Color frame detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6448590A true JPS6448590A (en) | 1989-02-23 |
Family
ID=16494469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62204677A Pending JPS6448590A (en) | 1987-08-18 | 1987-08-18 | Color frame detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448590A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5989671A (en) * | 1989-11-22 | 1999-11-23 | Sharp Kabushiki Kaisha | Optical recording medium and manufacturing method thereof |
-
1987
- 1987-08-18 JP JP62204677A patent/JPS6448590A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5989671A (en) * | 1989-11-22 | 1999-11-23 | Sharp Kabushiki Kaisha | Optical recording medium and manufacturing method thereof |
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