JPH0332834U - - Google Patents
Info
- Publication number
- JPH0332834U JPH0332834U JP8980489U JP8980489U JPH0332834U JP H0332834 U JPH0332834 U JP H0332834U JP 8980489 U JP8980489 U JP 8980489U JP 8980489 U JP8980489 U JP 8980489U JP H0332834 U JPH0332834 U JP H0332834U
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- signal detection
- search circuit
- voltage
- auto search
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Description
第１図は本考案の原理構成を示すブロツク図、
第２図は本考案の一実施例を示す回路図、第３図
は本実施例のコンパレータの動作を示す図、第４
図は本実施例の各部の信号波形を示す図、第５図
は従来のオートサーチ回路を示す図、第６図は従
来の問題点を説明するめの図である。
図において、１……信号検知部、２……ＡＧＣ
部、３……受信部、４……検波器、５……ＣＰＵ
、１１……コンパレータ。
Figure 1 is a block diagram showing the principle configuration of the present invention.
Fig. 2 is a circuit diagram showing an embodiment of the present invention, Fig. 3 is a diagram showing the operation of the comparator of this embodiment, and Fig. 4 is a circuit diagram showing an embodiment of the present invention.
FIG. 5 is a diagram showing signal waveforms of various parts of the present embodiment, FIG. 5 is a diagram showing a conventional auto search circuit, and FIG. 6 is a diagram for explaining the problems of the conventional method. In the figure, 1...signal detection section, 2...AGC
Section, 3... Receiving section, 4... Detector, 5... CPU
, 11... comparator.
Claims (1)
、予め定められた基準電圧Ｖｒとを比較して前記
ＡＧＣ電圧Ｖａが前記基準電圧Ｖｒ以上になつた
ときに各種オーデイオ情報Ｓ１〜Ｓｎの中の１つ
の信号を検知したことを出力する信号検知部１を
有するオートサーチ回路において、 前記信号検知の前と該信号検知の後との間にお
いて、前記基準電圧Ｖｒにヒステリシスを持たせ
ることを特徴とするオートサーチ回路。[Claims for Utility Model Registration] When the AGC voltage Va in the audio receiving device is compared with a predetermined reference voltage Vr , and when the AGC voltage Va exceeds the reference voltage Vr , various audio In an auto search circuit having a signal detection unit 1 that outputs that one signal among the information S 1 to S n is detected, the reference voltage V is set between before and after the signal detection. An auto search circuit characterized in that r has hysteresis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8980489U JPH0332834U (en) | 1989-08-01 | 1989-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8980489U JPH0332834U (en) | 1989-08-01 | 1989-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0332834U true JPH0332834U (en) | 1991-03-29 |
Family
ID=31639362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8980489U Pending JPH0332834U (en) | 1989-08-01 | 1989-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332834U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822885A (en) * | 1981-08-03 | 1983-02-10 | 株式会社ニツコ− | Preheater for charging material for steel manufacture |
| JPS607222A (en) * | 1983-06-27 | 1985-01-16 | Sony Corp | Fm receiver |
-
1989
- 1989-08-01 JP JP8980489U patent/JPH0332834U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822885A (en) * | 1981-08-03 | 1983-02-10 | 株式会社ニツコ− | Preheater for charging material for steel manufacture |
| JPS607222A (en) * | 1983-06-27 | 1985-01-16 | Sony Corp | Fm receiver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63146775U (en) | ||
| JPH0332834U (en) | ||
| JPS58100271U (en) | Engine start detection device | |
| JPS6453948U (en) | ||
| JPH0322480U (en) | ||
| JPS5851740U (en) | day fibrillator | |
| JPS62147106U (en) | ||
| JPH0334345U (en) | ||
| JPS6428568U (en) | ||
| JPH0212685U (en) | ||
| JPS59147352U (en) | Reception level detection device | |
| JPS6341975U (en) | ||
| JPS62169898U (en) | ||
| JPS6187156U (en) | ||
| JPS6049465U (en) | Rotating body rotation speed detection device | |
| JPS5891173U (en) | Peak level detection circuit | |
| JPH0469357U (en) | ||
| JPH01128178U (en) | ||
| JPS6015663U (en) | Rotation speed detection circuit | |
| JPS63187199U (en) | ||
| JPH0391668U (en) | ||
| JPS6425281U (en) | ||
| JPS6133186U (en) | Tension detection type sensor | |
| JPS60135663U (en) | Engine speed drop detection device | |
| JPS58142106U (en) | vehicle height adjustment device |