JPS579124A - Automatic tuning method for receiver - Google Patents
Automatic tuning method for receiverInfo
- Publication number
- JPS579124A JPS579124A JP8324380A JP8324380A JPS579124A JP S579124 A JPS579124 A JP S579124A JP 8324380 A JP8324380 A JP 8324380A JP 8324380 A JP8324380 A JP 8324380A JP S579124 A JPS579124 A JP S579124A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- detection
- level
- sweep
- detection level
- 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
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
- H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To stop sweeping at an accurate tuning point, by increasing the detection level when a signal intensity exceeds a detected level at >=2 consecutive channels, in an AM broadcast reception of a frequency synthesizer receiver. CONSTITUTION:A broadcast detection signal by the 1st signal detection level A which is preset from a reception signal processing section 1 and the broadcast detection signal by the 2nd detection level B which is set higher than the detection level A, are given to a controller section 4. When the controller section 4 controls a PLL 2 included in the loop and detects a signal at the 1st level after the start of sweep, it is moved further toward one channel sweep, and if no signal is detected, it stops after being returned in the reverse direction by one channel sweep. If detected, similar detection is made by increasing the detection level and the sweep is stopped when reception is made at a ture tuning point.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8324380A JPS579124A (en) | 1980-06-18 | 1980-06-18 | Automatic tuning method for receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8324380A JPS579124A (en) | 1980-06-18 | 1980-06-18 | Automatic tuning method for receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS579124A true JPS579124A (en) | 1982-01-18 |
JPS6218091B2 JPS6218091B2 (en) | 1987-04-21 |
Family
ID=13796879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8324380A Granted JPS579124A (en) | 1980-06-18 | 1980-06-18 | Automatic tuning method for receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS579124A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6068721U (en) * | 1983-10-15 | 1985-05-15 | パイオニア株式会社 | Receiving machine |
JPS6481405A (en) * | 1987-09-22 | 1989-03-27 | Sony Corp | Automatic tuning device |
JPH01243719A (en) * | 1988-03-25 | 1989-09-28 | Aiwa Co Ltd | Synthesizer receiver |
-
1980
- 1980-06-18 JP JP8324380A patent/JPS579124A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6068721U (en) * | 1983-10-15 | 1985-05-15 | パイオニア株式会社 | Receiving machine |
JPS6481405A (en) * | 1987-09-22 | 1989-03-27 | Sony Corp | Automatic tuning device |
JPH01243719A (en) * | 1988-03-25 | 1989-09-28 | Aiwa Co Ltd | Synthesizer receiver |
Also Published As
Publication number | Publication date |
---|---|
JPS6218091B2 (en) | 1987-04-21 |
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