JPS57121383A - Digital signal receiver - Google Patents
Digital signal receiverInfo
- Publication number
- JPS57121383A JPS57121383A JP744881A JP744881A JPS57121383A JP S57121383 A JPS57121383 A JP S57121383A JP 744881 A JP744881 A JP 744881A JP 744881 A JP744881 A JP 744881A JP S57121383 A JPS57121383 A JP S57121383A
- Authority
- JP
- Japan
- Prior art keywords
- frc
- circuit
- pulses
- detected
- 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.)
- Granted
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
- H04N7/0357—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 for error detection or correction
Abstract
PURPOSE:To detect always accurately and surely a framing code signal FRC, by detecting the occurrence of malfunction in the detection of the FRC to correct the group delay characteristic of the transmission line in a receiver. CONSTITUTION:A group delay correcting circuit 10 is selectively connected and disconnected between a circuit 1, which includes devices from a tuner to a VIF detector, and a gate circuit 2 for extracting a character signal by a relay 11. An FRC detecting and timing pulse generating circuit 5 outputs a continuous pulse train signal of 60Hz when the FRC is detected normally, but the circuit 5 does not generate output pulses when the FRC is not detected accurately. A discriminating circuit 12 detects the absence or the presence of these pulses; and when pulses are not detected, and correcting circuit 10 is inseted to the signal path by the relay 11. As the result, the waveform distortion of the FRC is improved.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP744881A JPS57121383A (en) | 1981-01-20 | 1981-01-20 | Digital signal receiver |
| CA000394291A CA1177138A (en) | 1981-01-20 | 1982-01-15 | Digital signal receiver |
| AU79594/82A AU554973B2 (en) | 1981-01-20 | 1982-01-18 | Digital receiver error detection |
| EP19820100350 EP0056649B1 (en) | 1981-01-20 | 1982-01-19 | Digital signal receiver |
| DE8282100350T DE3266081D1 (en) | 1981-01-20 | 1982-01-19 | Digital signal receiver |
| US06/640,244 US4561100A (en) | 1981-01-20 | 1984-08-13 | Digital signal receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP744881A JPS57121383A (en) | 1981-01-20 | 1981-01-20 | Digital signal receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57121383A true JPS57121383A (en) | 1982-07-28 |
| JPS6243633B2 JPS6243633B2 (en) | 1987-09-16 |
Family
ID=11666114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP744881A Granted JPS57121383A (en) | 1981-01-20 | 1981-01-20 | Digital signal receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57121383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121334A (en) * | 1981-01-21 | 1982-07-28 | Sanyo Electric Co Ltd | Digital signal receiver |
-
1981
- 1981-01-20 JP JP744881A patent/JPS57121383A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121334A (en) * | 1981-01-21 | 1982-07-28 | Sanyo Electric Co Ltd | Digital signal receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6243633B2 (en) | 1987-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5477532A (en) | Key identifying circuit | |
| JPS6453623A (en) | Pulse detecting circuit employing amplitude and time recognition | |
| JPS57121383A (en) | Digital signal receiver | |
| JPS643572A (en) | Signal detector | |
| WO2002031451A3 (en) | Apparatus and method for detecting the location, intensity and initiation time of an energy pulse | |
| JPS5696579A (en) | Vertical synchronizing separation circuit | |
| JPS5471935A (en) | Signal sampling pulse generator | |
| SU617865A1 (en) | Arrangement for suppressing background componenets in video signals | |
| JPS56137752A (en) | Data highway system | |
| JPS55137745A (en) | Detection system of frame synchronizing signal | |
| JPS5477003A (en) | Coincidence output circuit system | |
| JPS57121334A (en) | Digital signal receiver | |
| JPS56117940A (en) | Paper clogging detector | |
| JPS5647144A (en) | Signal discriminator | |
| SU497617A1 (en) | Device for transmitting discrete information | |
| DE69708531T2 (en) | Vertical synchronization signal detector | |
| SU993456A1 (en) | Pulse synchronization device | |
| JPS573479A (en) | Synchronizing circuit | |
| JPS55114031A (en) | Detector for pulse absence | |
| JPS5725748A (en) | Start-stop synchronizing system | |
| JPS56156038A (en) | Optical signal receiving device | |
| JPS5714716A (en) | Position detector | |
| JPS5784638A (en) | Line multiplex system | |
| JPS57207491A (en) | Digital signal receiver | |
| KR840000137A (en) | TV Ghost Signal Detection During Video Information Interval |