JPS558146A - Automatic frequency adjuster - Google Patents
Automatic frequency adjusterInfo
- Publication number
- JPS558146A JPS558146A JP8085478A JP8085478A JPS558146A JP S558146 A JPS558146 A JP S558146A JP 8085478 A JP8085478 A JP 8085478A JP 8085478 A JP8085478 A JP 8085478A JP S558146 A JPS558146 A JP S558146A
- Authority
- JP
- Japan
- Prior art keywords
- correct value
- circuit
- case
- clock signal
- counter
- 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
Abstract
PURPOSE: To secure a quick correction to the correct value in case the tuning voltage has a shift by counting the time from the 1st to 2nd genration of the stop signal and then adding the half of the counted time to the counter.
CONSTITUTION: In case a certain channel is received and the synchronism has a shift, AFT deciding pulse signal generation circuit 52 operates. As a result, the syncronous circuit is corrected to be changed toward the correct value. In this case, the tuning voltage stops its change by the delay of the answer of the AFT signal when the voltage passes through the correct value, and then changes again toward the correct value. In this instant, the clock signal different from the clock which is given from clock signal generation circuit 15 is applied to the counter of one side of clock signal control circuit 55 via the stop signal delivered from circuit 44, and the tuning voltage passes away the correct value and stops to begin to be corrected backward. In this case, the clock signal of double frequency is supplied concurrently to the other counter. And when an agreement is obtained for the count value between both counters, the supply of the colck signals is stopped to circuit 52 to complete the correction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53080854A JPS5842652B2 (en) | 1978-07-05 | 1978-07-05 | automatic frequency adjustment device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53080854A JPS5842652B2 (en) | 1978-07-05 | 1978-07-05 | automatic frequency adjustment device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558146A true JPS558146A (en) | 1980-01-21 |
JPS5842652B2 JPS5842652B2 (en) | 1983-09-21 |
Family
ID=13729926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53080854A Expired JPS5842652B2 (en) | 1978-07-05 | 1978-07-05 | automatic frequency adjustment device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5842652B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5224019A (en) * | 1975-08-19 | 1977-02-23 | Meguro Denpa Sokki Kk | Tuning receive system |
-
1978
- 1978-07-05 JP JP53080854A patent/JPS5842652B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5224019A (en) * | 1975-08-19 | 1977-02-23 | Meguro Denpa Sokki Kk | Tuning receive system |
Also Published As
Publication number | Publication date |
---|---|
JPS5842652B2 (en) | 1983-09-21 |
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