JPS6438850U - - Google Patents
Info
- Publication number
- JPS6438850U JPS6438850U JP13406887U JP13406887U JPS6438850U JP S6438850 U JPS6438850 U JP S6438850U JP 13406887 U JP13406887 U JP 13406887U JP 13406887 U JP13406887 U JP 13406887U JP S6438850 U JPS6438850 U JP S6438850U
- Authority
- JP
- Japan
- Prior art keywords
- signal input
- line
- quality
- signal
- determination circuit
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Description
第１図は本考案の一実施例のブロツク図である
。
１……入力狭帯域フイルタ、２……周波数変換
器、３……狭帯域フイルタ、４……振幅制限器、
５……周波数弁別器、６……低周波増幅器、７…
…ＶＣＯ、８……帯域フイルタ、９……雑音検出
器、１０……信号品質検出器、１１……信号品質
検出器、１２……表示器。
FIG. 1 is a block diagram of one embodiment of the present invention. 1...Input narrowband filter, 2...Frequency converter, 3...Narrowband filter, 4...Amplitude limiter,
5... Frequency discriminator, 6... Low frequency amplifier, 7...
...VCO, 8... Bandwidth filter, 9... Noise detector, 10... Signal quality detector, 11... Signal quality detector, 12... Display.
Claims (1)
のＦＭ信号入力が周波数弁別器の動作最小レベル
に達しているか否かを検出して前記ＦＭ信号入力
の品質を判定するＦＭ回線における信号品質判定
回路において、ＦＭ信号入力に含まれる雑音成分
を分離してＦＭ信号入力の品質を判定することを
特徴とするＦＭ回線における信号品質判定回路。 In a signal quality determination circuit in an FM line that determines the quality of the FM signal input by detecting whether or not the FM signal input of a demodulation circuit using a negative feedback method in the FM line has reached the minimum operating level of a frequency discriminator. , a signal quality determination circuit for an FM line, characterized in that the noise component included in the FM signal input is separated to determine the quality of the FM signal input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13406887U JPS6438850U (en) | 1987-09-01 | 1987-09-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13406887U JPS6438850U (en) | 1987-09-01 | 1987-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438850U true JPS6438850U (en) | 1989-03-08 |
Family
ID=31392484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13406887U Pending JPS6438850U (en) | 1987-09-01 | 1987-09-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438850U (en) |
-
1987
- 1987-09-01 JP JP13406887U patent/JPS6438850U/ja active Pending
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