JPS5755609A - Automatic channel-selecting receiver - Google Patents
Automatic channel-selecting receiverInfo
- Publication number
- JPS5755609A JPS5755609A JP13094480A JP13094480A JPS5755609A JP S5755609 A JPS5755609 A JP S5755609A JP 13094480 A JP13094480 A JP 13094480A JP 13094480 A JP13094480 A JP 13094480A JP S5755609 A JPS5755609 A JP S5755609A
- Authority
- JP
- Japan
- Prior art keywords
- deltaf
- detection signal
- shifted
- automatic channel
- tuning
- 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
- 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 perform automatic channel selection in a short time by increasing a sweep speed relatively by changing set frequency width. CONSTITUTION:As an automatic channel selection sweep is started, the code of a reception frequency shifted from a current reception frequency by N.DELTAf (N; normally about 2-4) is set in a code setter 6. Then, a level detector 7 checks the presence of a signal and when not, the generated code is further shifted by N.DELTAf. When the level detection signal is present, a tuning detector 8 checks the presence of the signal. When any tuning detection signal is not outputted, the generated code is furthermore shifted by DELTAf. Thus, it is shifted by DELTAf for each time until the tuning detection signal is obtained. Once the tuning detection signal is obtained, the sweep is stopped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094480A JPS5755609A (en) | 1980-09-19 | 1980-09-19 | Automatic channel-selecting receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094480A JPS5755609A (en) | 1980-09-19 | 1980-09-19 | Automatic channel-selecting receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5755609A true JPS5755609A (en) | 1982-04-02 |
Family
ID=15046311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13094480A Pending JPS5755609A (en) | 1980-09-19 | 1980-09-19 | Automatic channel-selecting receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5755609A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5518128A (en) * | 1978-07-24 | 1980-02-08 | Matsushita Electric Ind Co Ltd | Channel selector device |
-
1980
- 1980-09-19 JP JP13094480A patent/JPS5755609A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5518128A (en) * | 1978-07-24 | 1980-02-08 | Matsushita Electric Ind Co Ltd | Channel selector device |
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