JPS5715585A - Sampling circuit for character multiplex broadcast signal - Google Patents
Sampling circuit for character multiplex broadcast signalInfo
- Publication number
- JPS5715585A JPS5715585A JP9093980A JP9093980A JPS5715585A JP S5715585 A JPS5715585 A JP S5715585A JP 9093980 A JP9093980 A JP 9093980A JP 9093980 A JP9093980 A JP 9093980A JP S5715585 A JPS5715585 A JP S5715585A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- multiplex broadcast
- character
- broadcast signal
- character multiplex
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
- H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
PURPOSE:To make accurate the sampling operation of a character signal and to prevent malfunction of character multiplex broadcast signal, by selecting the sampling pulse of the character signal of a character multiplex broadcast signal without resetting a m-frequency divider. CONSTITUTION:A video signal applied to an input terminal 11 is applied to a slicer 17 to introduce a character multiplex broadcast signal digitized at logic ''0'' and ''1''. The signal is applied to an edge sgnal pickup section 18 and one input terminal of a phase detector 19. The detector 19 detects which clock signal out of five signals is in phase to the output of the section 18 and the signal of logic ''1'' is given to an output terminal corresponding to the clock signal in phase as a phase information. The output of the detector 19 is supplied to one input terminal of a sampling circuit 21 of a sampling means 20 and to a data latch circuit 22 as a sampling pulse.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9093980A JPS5715585A (en) | 1980-07-03 | 1980-07-03 | Sampling circuit for character multiplex broadcast signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9093980A JPS5715585A (en) | 1980-07-03 | 1980-07-03 | Sampling circuit for character multiplex broadcast signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5715585A true JPS5715585A (en) | 1982-01-26 |
Family
ID=14012414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9093980A Pending JPS5715585A (en) | 1980-07-03 | 1980-07-03 | Sampling circuit for character multiplex broadcast signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5715585A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133782A (en) * | 1981-02-10 | 1982-08-18 | Matsushita Electric Ind Co Ltd | Clock reproducing device |
JPS57148486A (en) * | 1981-03-10 | 1982-09-13 | Matsushita Electric Ind Co Ltd | Static picture receiving equipment |
JPS60248087A (en) * | 1984-05-24 | 1985-12-07 | Toshiba Corp | Sampling clock reproducing circuit |
EP0176993A2 (en) * | 1984-09-28 | 1986-04-09 | Kabushiki Kaisha Toshiba | Reference signal reproduction apparatus |
-
1980
- 1980-07-03 JP JP9093980A patent/JPS5715585A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133782A (en) * | 1981-02-10 | 1982-08-18 | Matsushita Electric Ind Co Ltd | Clock reproducing device |
JPS57148486A (en) * | 1981-03-10 | 1982-09-13 | Matsushita Electric Ind Co Ltd | Static picture receiving equipment |
JPS60248087A (en) * | 1984-05-24 | 1985-12-07 | Toshiba Corp | Sampling clock reproducing circuit |
JPH0453153B2 (en) * | 1984-05-24 | 1992-08-25 | Toshiba Kk | |
EP0176993A2 (en) * | 1984-09-28 | 1986-04-09 | Kabushiki Kaisha Toshiba | Reference signal reproduction apparatus |
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