JPS5560328A - Tuning-point detection circuit of am radio receiver - Google Patents
Tuning-point detection circuit of am radio receiverInfo
- Publication number
- JPS5560328A JPS5560328A JP13346678A JP13346678A JPS5560328A JP S5560328 A JPS5560328 A JP S5560328A JP 13346678 A JP13346678 A JP 13346678A JP 13346678 A JP13346678 A JP 13346678A JP S5560328 A JPS5560328 A JP S5560328A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- detection circuit
- narrow
- detecting
- detection output
- 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
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE: To detect a tuning point through definite operation with circuit constitution simplified by changing a swithc over to the side of a narrow-band intermediate frequency filter in channel selection, by detecting the direct-current component of detection output from a detection circuit by a detector, and by detecting the tuning point by this detection output.
CONSTITUTION: Switch 26 is changed over in accordance with a reception state by providing broad-band intermediate frequency filter 18, narrow-band intermediate frequency filter 11, switch 26 which supplies an intermediate frequency signal from frequency converter circuit 25 to broad-band and narrow-band intermediate frequency filters 18 and 11 by switching, and detection circuit 15 supplied with outputs of filters 18 and 11. Then, detector 27 detecting the direct-current component of the detection output of detection circuit 15 is provided and in channel selection, switch 26 is changed over to the side of narrow-band intermediate frequency filter 11, thereby detecting a tuning point by the detection output of detector 27.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13346678A JPS6046569B2 (en) | 1978-10-30 | 1978-10-30 | AM radio receiver tuning point detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13346678A JPS6046569B2 (en) | 1978-10-30 | 1978-10-30 | AM radio receiver tuning point detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5560328A true JPS5560328A (en) | 1980-05-07 |
JPS6046569B2 JPS6046569B2 (en) | 1985-10-16 |
Family
ID=15105433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13346678A Expired JPS6046569B2 (en) | 1978-10-30 | 1978-10-30 | AM radio receiver tuning point detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6046569B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5753135A (en) * | 1980-09-16 | 1982-03-30 | Toshiba Corp | Channel selecting device |
JPS5772632U (en) * | 1980-10-20 | 1982-05-04 | ||
JPS5794237U (en) * | 1980-11-28 | 1982-06-10 | ||
JPS5899929U (en) * | 1981-12-24 | 1983-07-07 | パイオニア株式会社 | receiving device |
JPS6016717A (en) * | 1984-06-21 | 1985-01-28 | Matsushita Electric Ind Co Ltd | Afc device |
JPS6032832U (en) * | 1983-08-09 | 1985-03-06 | パイオニア株式会社 | Receiver automatic channel selection device |
JPS61161816A (en) * | 1985-01-11 | 1986-07-22 | Sony Corp | Radio receiver |
-
1978
- 1978-10-30 JP JP13346678A patent/JPS6046569B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5753135A (en) * | 1980-09-16 | 1982-03-30 | Toshiba Corp | Channel selecting device |
JPH022330B2 (en) * | 1980-09-16 | 1990-01-17 | Tokyo Shibaura Electric Co | |
JPS5772632U (en) * | 1980-10-20 | 1982-05-04 | ||
JPS5794237U (en) * | 1980-11-28 | 1982-06-10 | ||
JPS5899929U (en) * | 1981-12-24 | 1983-07-07 | パイオニア株式会社 | receiving device |
JPS6032832U (en) * | 1983-08-09 | 1985-03-06 | パイオニア株式会社 | Receiver automatic channel selection device |
JPS6016717A (en) * | 1984-06-21 | 1985-01-28 | Matsushita Electric Ind Co Ltd | Afc device |
JPS6234292B2 (en) * | 1984-06-21 | 1987-07-25 | Matsushita Electric Ind Co Ltd | |
JPS61161816A (en) * | 1985-01-11 | 1986-07-22 | Sony Corp | Radio receiver |
Also Published As
Publication number | Publication date |
---|---|
JPS6046569B2 (en) | 1985-10-16 |
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