JPS5481012A - Receiver of automatic tuning - Google Patents
Receiver of automatic tuningInfo
- Publication number
- JPS5481012A JPS5481012A JP14812377A JP14812377A JPS5481012A JP S5481012 A JPS5481012 A JP S5481012A JP 14812377 A JP14812377 A JP 14812377A JP 14812377 A JP14812377 A JP 14812377A JP S5481012 A JPS5481012 A JP S5481012A
- Authority
- JP
- Japan
- Prior art keywords
- sweep
- output
- frequency
- signal
- slowing down
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To stop the sweep at the location present for the broad-cast station surely, by once slowing down the sweep speed of the sweep signal generating circuit with the DC signal obtained by rectifying the output of the broad band intermediate frequency filter and stopping the sweep with the stop signal. CONSTITUTION:When sweep operation is made and the frequency closes to the frequency of the broadcast station, an output is apperared at the filter 4. The output of the rectifier 12 is increased inversely proportional to the deturning frequency. When the DC output voltage is more than the threshold voltage, the selection circuit 13 generates the first control signal, slowing down the sweep speed of the sweep signal generator 10. The output of the rectifying circuit 9 connected to the band pass filter 6 causes the second control signal from the stop signal generating circuit 11, stopping the sweep. Since the method once slowing down the sweep speed is taken, until the first control signal is appeared, the sweep speed can be quickened.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14812377A JPS5481012A (en) | 1977-12-12 | 1977-12-12 | Receiver of automatic tuning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14812377A JPS5481012A (en) | 1977-12-12 | 1977-12-12 | Receiver of automatic tuning |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5481012A true JPS5481012A (en) | 1979-06-28 |
JPS615291B2 JPS615291B2 (en) | 1986-02-17 |
Family
ID=15445763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14812377A Granted JPS5481012A (en) | 1977-12-12 | 1977-12-12 | Receiver of automatic tuning |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5481012A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821918A (en) * | 1981-08-03 | 1983-02-09 | Oki Electric Ind Co Ltd | Receiving system |
JPS6223610A (en) * | 1985-07-24 | 1987-01-31 | Yaesu Musen Co Ltd | Receiver circuit |
JPS62271515A (en) * | 1986-05-20 | 1987-11-25 | Sanyo Electric Co Ltd | Channel selection data preset device for voltage synthesizer tuner |
-
1977
- 1977-12-12 JP JP14812377A patent/JPS5481012A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821918A (en) * | 1981-08-03 | 1983-02-09 | Oki Electric Ind Co Ltd | Receiving system |
JPS6223610A (en) * | 1985-07-24 | 1987-01-31 | Yaesu Musen Co Ltd | Receiver circuit |
JPS62271515A (en) * | 1986-05-20 | 1987-11-25 | Sanyo Electric Co Ltd | Channel selection data preset device for voltage synthesizer tuner |
Also Published As
Publication number | Publication date |
---|---|
JPS615291B2 (en) | 1986-02-17 |
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