JPH0197609U - - Google Patents
Info
- Publication number
- JPH0197609U JPH0197609U JP19330687U JP19330687U JPH0197609U JP H0197609 U JPH0197609 U JP H0197609U JP 19330687 U JP19330687 U JP 19330687U JP 19330687 U JP19330687 U JP 19330687U JP H0197609 U JPH0197609 U JP H0197609U
- Authority
- JP
- Japan
- Prior art keywords
- switching device
- circuit
- comparison means
- band filter
- band
- 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
- 238000012935 Averaging Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Filters And Equalizers (AREA)
Description
第１図は本考案の一実施例の回路図である。 FIG. 1 is a circuit diagram of an embodiment of the present invention.
Claims (1)
する平均化手段と、該平均化手段からの出力を基
準値と比較する比較手段と、音声ＩＦ経路に接続
され上記比較手段の比較結果により１個が選択さ
れる複数の帯域フイルタとを具備し、電源投入或
いは選局直後は狭い帯域フイルタが選択され、上
記ＦＭ変調度が深い信号を受信することにより上
記比較手段により広い帯域フイルタが選択されそ
の状態が保持されるようにしたことを特徴とする
帯域切換装置。 (2) 上記平均化回路が音声復調出力を整流・積
分する回路でなることを特徴とする実用新案登録
請求の範囲第１項記載の帯域切換装置。 (3) 上記比較手段の基準値が、浅いＦＭ変調度
に応じた値であることを特徴とする実用新案登録
請求の範囲第１項又は第２項記載の帯域切換装置
。 (4) 上記比較手段が出力側にＦＦ回路を具備し
、該ＦＦ回路が上記広い帯域フイルタの選択状態
を保持するようにしたことを特徴とする実用新案
登録請求の範囲第１項乃至第３項記載の帯域切換
装置。 (5) 上記ＦＦ回路が、上記電源投入或いは選局
直後にリセツトされて上記狭い帯域フイルタを選
択するようにしたことを特徴とする実用新案登録
請求の範囲第１項記載の帯域切換装置。[Claims for Utility Model Registration] (1) Averaging means for generating an average audio level according to the degree of FM modulation, a comparison means for comparing the output from the averaging means with a reference value, and connected to the audio IF path. and a plurality of band filters, one of which is selected according to the comparison result of the comparison means, and the narrow band filter is selected immediately after turning on the power or selecting a channel, and by receiving the signal with the deep FM modulation degree, the narrow band filter is selected. A band switching device characterized in that a wide band filter is selected by comparison means and the selected state is maintained. (2) The band switching device according to claim 1, wherein the averaging circuit is a circuit that rectifies and integrates the audio demodulated output. (3) The band switching device according to claim 1 or 2, wherein the reference value of the comparison means is a value corresponding to a shallow FM modulation degree. (4) Utility model registration claims 1 to 3, characterized in that the comparison means is equipped with an FF circuit on the output side, and the FF circuit maintains the selected state of the wide band filter. The band switching device described in Section 1. (5) The band switching device according to claim 1, wherein the FF circuit is reset to select the narrow band filter immediately after the power is turned on or the channel is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19330687U JPH0197609U (en) | 1987-12-19 | 1987-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19330687U JPH0197609U (en) | 1987-12-19 | 1987-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0197609U true JPH0197609U (en) | 1989-06-29 |
Family
ID=31484104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19330687U Pending JPH0197609U (en) | 1987-12-19 | 1987-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0197609U (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5294712A (en) * | 1976-02-04 | 1977-08-09 | Matsushita Electric Ind Co Ltd | Receiver |
| JPS6159904A (en) * | 1984-08-22 | 1986-03-27 | ブラウプンクト‐ヴエルケ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method and circuit device for generating control dc voltage in satellite receiver |
| JPS61257027A (en) * | 1985-05-10 | 1986-11-14 | Matsushita Electric Ind Co Ltd | Interference wave eliminating device |
| JPS6277786A (en) * | 1985-10-01 | 1987-04-09 | Matsushita Electric Ind Co Ltd | Polarizer control circuit for satellite broadcasting receiver |
| JPS6298979A (en) * | 1985-10-25 | 1987-05-08 | Sony Corp | Receiver |
| JPS6230430B2 (en) * | 1979-08-23 | 1987-07-02 | Ricoh Kk | |
| JPS62214795A (en) * | 1986-03-14 | 1987-09-21 | Matsushita Electric Works Ltd | Satellite broadcasting receiver |
-
1987
- 1987-12-19 JP JP19330687U patent/JPH0197609U/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5294712A (en) * | 1976-02-04 | 1977-08-09 | Matsushita Electric Ind Co Ltd | Receiver |
| JPS6230430B2 (en) * | 1979-08-23 | 1987-07-02 | Ricoh Kk | |
| JPS6159904A (en) * | 1984-08-22 | 1986-03-27 | ブラウプンクト‐ヴエルケ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method and circuit device for generating control dc voltage in satellite receiver |
| JPS61257027A (en) * | 1985-05-10 | 1986-11-14 | Matsushita Electric Ind Co Ltd | Interference wave eliminating device |
| JPS6277786A (en) * | 1985-10-01 | 1987-04-09 | Matsushita Electric Ind Co Ltd | Polarizer control circuit for satellite broadcasting receiver |
| JPS6298979A (en) * | 1985-10-25 | 1987-05-08 | Sony Corp | Receiver |
| JPS62214795A (en) * | 1986-03-14 | 1987-09-21 | Matsushita Electric Works Ltd | Satellite broadcasting receiver |