JPS55162620A - Electronic tuning type receiver - Google Patents
Electronic tuning type receiverInfo
- Publication number
- JPS55162620A JPS55162620A JP6990979A JP6990979A JPS55162620A JP S55162620 A JPS55162620 A JP S55162620A JP 6990979 A JP6990979 A JP 6990979A JP 6990979 A JP6990979 A JP 6990979A JP S55162620 A JPS55162620 A JP S55162620A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- counter
- variation
- signal
- 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.)
- 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
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To enable stabilization of reception frequency, even with ambient temperature and power supply voltage in variation, by correcting the variation of local oscillating frequency. CONSTITUTION:When the local oscillating frequency of the local oscillator 13 of the reception circuit 10 is changed due to change in ambient temperature, the output signal B of the frequency counter 33 is changed to B', the comparison signal of the comparator 53 is in the state of A B, and the channel selection control signal according to the difference is appeared at the output. This signal is fed to the code signal generator 2 via the tuning control signal generator 22. This output changes DC analog value of the D/A converter 24, controls the local oscillator 13, and frequency control is continued until the counter output signal of the counter 33 is in agreement with the content stored in the first memory circuit 511, before the frequency variation in the control loop of the oscillator 13 counter 20 frequency correector 50 channel selector 20, allowing to correct the local oscillating frequency into the frequency before variation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6990979A JPS55162620A (en) | 1979-06-06 | 1979-06-06 | Electronic tuning type receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6990979A JPS55162620A (en) | 1979-06-06 | 1979-06-06 | Electronic tuning type receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55162620A true JPS55162620A (en) | 1980-12-18 |
Family
ID=13416288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6990979A Pending JPS55162620A (en) | 1979-06-06 | 1979-06-06 | Electronic tuning type receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55162620A (en) |
-
1979
- 1979-06-06 JP JP6990979A patent/JPS55162620A/en active Pending
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