JPS6430382A - Teletext signal reproduction device - Google Patents
Teletext signal reproduction deviceInfo
- Publication number
- JPS6430382A JPS6430382A JP18634187A JP18634187A JPS6430382A JP S6430382 A JPS6430382 A JP S6430382A JP 18634187 A JP18634187 A JP 18634187A JP 18634187 A JP18634187 A JP 18634187A JP S6430382 A JPS6430382 A JP S6430382A
- Authority
- JP
- Japan
- Prior art keywords
- sampling clock
- signal
- horizontal synchronizing
- teletext
- teletext 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
Landscapes
- Television Systems (AREA)
Abstract
PURPOSE:To extract a teletext signal exactly with least errors from a video signal that includes jitters produced at recording and reproducing by forming a sampling clock based on a horizontal synchronizing signal. CONSTITUTION:In the titled device which extracts a teletext signal from a video signal in which the teletext signal is superimposed in a line in a vertical flyback period by using a sampling clock generated in a sampling clock generation part, phase locked loops 15, 16, 17, 18 that operate based on a horizontal synchronizing signal that includes jitters are used to multiply a horizontal synchronizing signal in order to obtain a sampling clock. Accordingly, the sampling clock complies with a jitter, character information can be extracted accurately.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18634187A JPS6430382A (en) | 1987-07-25 | 1987-07-25 | Teletext signal reproduction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18634187A JPS6430382A (en) | 1987-07-25 | 1987-07-25 | Teletext signal reproduction device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6430382A true JPS6430382A (en) | 1989-02-01 |
Family
ID=16186658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18634187A Pending JPS6430382A (en) | 1987-07-25 | 1987-07-25 | Teletext signal reproduction device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6430382A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04339482A (en) * | 1991-05-16 | 1992-11-26 | Matsushita Electric Ind Co Ltd | Caption decoder circuit |
-
1987
- 1987-07-25 JP JP18634187A patent/JPS6430382A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04339482A (en) * | 1991-05-16 | 1992-11-26 | Matsushita Electric Ind Co Ltd | Caption decoder circuit |
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