JPS6444184A - Video printer - Google Patents
Video printerInfo
- Publication number
- JPS6444184A JPS6444184A JP20025987A JP20025987A JPS6444184A JP S6444184 A JPS6444184 A JP S6444184A JP 20025987 A JP20025987 A JP 20025987A JP 20025987 A JP20025987 A JP 20025987A JP S6444184 A JPS6444184 A JP S6444184A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- sampling clock
- horizontal
- horizontal frequency
- vertical
- 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
Landscapes
- Electronic Switches (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To automatically obtain a sampling clock synchronizing with several types of dot clocks by automatically detecting a horizontal frequency and a vertical frequency and automatically generating the sampling clock. CONSTITUTION:The horizontal frequency and the vertical frequency of a video signal are detected by a horizontal frequency detecting part 101 and a vertical frequency detecting part 102. A sampling clock generating part 103 generates the sampling clock for quantizing to video signal. The frequency dividing ratio of a frequency divider 104 is changed by the detected horizontal frequency and the vertical frequency to divide the frequency of the sampling clock and have a frequency equal to the horizontal frequency. The signal of the frequency equal to this horizontal frequency is fed back to the sampling clock generating part 103. In the sampling clock generating part 103, the sampling clock is synchronized with the dot clock by the signal and of the frequency equal to this horizontal frequency and the horizontal frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20025987A JPS6444184A (en) | 1987-08-11 | 1987-08-11 | Video printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20025987A JPS6444184A (en) | 1987-08-11 | 1987-08-11 | Video printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444184A true JPS6444184A (en) | 1989-02-16 |
Family
ID=16421384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20025987A Pending JPS6444184A (en) | 1987-08-11 | 1987-08-11 | Video printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444184A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0397376A (en) * | 1989-09-11 | 1991-04-23 | Hitachi Ltd | Video signal processor |
-
1987
- 1987-08-11 JP JP20025987A patent/JPS6444184A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0397376A (en) * | 1989-09-11 | 1991-04-23 | Hitachi Ltd | Video signal processor |
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