JPS5549047A - Fm receiver - Google Patents
Fm receiverInfo
- Publication number
- JPS5549047A JPS5549047A JP12150778A JP12150778A JPS5549047A JP S5549047 A JPS5549047 A JP S5549047A JP 12150778 A JP12150778 A JP 12150778A JP 12150778 A JP12150778 A JP 12150778A JP S5549047 A JPS5549047 A JP S5549047A
- Authority
- JP
- Japan
- Prior art keywords
- signal level
- value
- intermediate frequency
- fixed value
- circuits
- 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
- 230000007423 decrease Effects 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
Landscapes
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To eliminate disturbance due to a multipulse by holding the input value of a voltage control oscillation circuit of a PLL circuit at the value right before a signal level of an intermediate frequency decreases below a fixed value. CONSTITUTION:An intermediate frequency is received by being inputted to PLL circuits 5, 6, and 7 and the signal level of the intermediate frequency is detected 3; when the detected signal level is below a fixed value, circuits 13 and 14 are provided which hold the input value of voltage control oscillator 7 of PLL circuits at a value right before the signal level decreases below the fixed value. As a result, influence due to disturbance of a multipulse can be avoided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12150778A JPS5549047A (en) | 1978-10-04 | 1978-10-04 | Fm receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12150778A JPS5549047A (en) | 1978-10-04 | 1978-10-04 | Fm receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5549047A true JPS5549047A (en) | 1980-04-08 |
Family
ID=14812899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12150778A Pending JPS5549047A (en) | 1978-10-04 | 1978-10-04 | Fm receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5549047A (en) |
-
1978
- 1978-10-04 JP JP12150778A patent/JPS5549047A/en active Pending
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