JPS566581A - Television synchronizing broadcast device - Google Patents
Television synchronizing broadcast deviceInfo
- Publication number
- JPS566581A JPS566581A JP8230079A JP8230079A JPS566581A JP S566581 A JPS566581 A JP S566581A JP 8230079 A JP8230079 A JP 8230079A JP 8230079 A JP8230079 A JP 8230079A JP S566581 A JPS566581 A JP S566581A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- transmission
- counter
- frequency
- 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
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronizing For Television (AREA)
Abstract
PURPOSE:To obtain the steady offset effect immediately when the transmission is restarted, by securing the high-accuracy frequency control via the reversible counter and the D/A converter and then storing the control data by the counter even through the transmission of other stations or the self-station may be discontinued. CONSTITUTION:Both the frequency of the self-station's transmission signal and the transmission frequencies of other stations are received by antenna 1, and the frequency difference is detected by frequency difference detecting circuit 2. And the output according to the frequency difference is applied to the 1st and 2nd low band filter trigger circuits 12a and 12b each, and the output of circit 12b is applied to reversible counter 16 via latch circuit 13. At the same time, the output of circuit 12a is applied to circuit 13 and FF14, and the output of FF14 is applied to counter 16. On the other hand, the output of TV signal generating circuit 5 is applied to FF14 via cycle isolating circuit 15. And the addition/subtraction is given via counter 16 to the horizontal erasion signal sent from circuit 15 for the period during which circuit 2 produces the output and according to the polarity of the output. Then the count value of counter 16 receives the D/A conversion to be converted into the the digital value. And the control is given to transmission frequency oscillator 4 to then give the control to the transmission frequency of the self-station.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8230079A JPS566581A (en) | 1979-06-27 | 1979-06-27 | Television synchronizing broadcast device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8230079A JPS566581A (en) | 1979-06-27 | 1979-06-27 | Television synchronizing broadcast device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS566581A true JPS566581A (en) | 1981-01-23 |
Family
ID=13770695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8230079A Pending JPS566581A (en) | 1979-06-27 | 1979-06-27 | Television synchronizing broadcast device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS566581A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100448279C (en) * | 2005-07-14 | 2008-12-31 | 乐金电子(中国)研究开发中心有限公司 | Method and terminal for receiving a digital multimedia broadcast |
-
1979
- 1979-06-27 JP JP8230079A patent/JPS566581A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100448279C (en) * | 2005-07-14 | 2008-12-31 | 乐金电子(中国)研究开发中心有限公司 | Method and terminal for receiving a digital multimedia broadcast |
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