JPS5819519U - automatic gain control device - Google Patents
automatic gain control deviceInfo
- Publication number
- JPS5819519U JPS5819519U JP1981114120U JP11412081U JPS5819519U JP S5819519 U JPS5819519 U JP S5819519U JP 1981114120 U JP1981114120 U JP 1981114120U JP 11412081 U JP11412081 U JP 11412081U JP S5819519 U JPS5819519 U JP S5819519U
- Authority
- JP
- Japan
- Prior art keywords
- gain control
- control device
- tuning voltage
- automatic gain
- tuner
- 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.)
- Granted
Links
Landscapes
- Television Receiver Circuits (AREA)
- Control Of Amplification And Gain Control (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は各受信バンドのチューナ部に於けるゲインリダ
クション特性を示す図、第２図は本考案の実施例による
自動利得制御装置を示す回路図、第３図は第２図に示す
重みづけ回路の具体例を示す回路図である。
２・・・チューナ回路、３．４・・・チューナ部、５ａ
。
５ｂ・・・高周波増幅部、５ａ、 ５ｂ・・・局部発
振器、７ａ、 ７ｂ・・・ミキサ、８・・・映像中間
周波増幅器、９・・・映像検波器、１０・・・映像増幅
器、１１・・・利得制御回路、１２・・・弁別回路、１
３・・・同期分離回路、１４・・・選局装置、１５・・
・キーボード、１６・・・重みづけ回路。Fig. 1 is a diagram showing the gain reduction characteristics in the tuner section of each reception band, Fig. 2 is a circuit diagram showing an automatic gain control device according to an embodiment of the present invention, and Fig. 3 is a diagram showing the weighting shown in Fig. 2. FIG. 2 is a circuit diagram showing a specific example of a circuit. 2... Tuner circuit, 3.4... Tuner section, 5a
. 5b... High frequency amplification section, 5a, 5b... Local oscillator, 7a, 7b... Mixer, 8... Video intermediate frequency amplifier, 9... Video detector, 10... Video amplifier, 11 ...Gain control circuit, 12...Discrimination circuit, 1
3... Synchronization separation circuit, 14... Tuning device, 15...
- Keyboard, 16... Weighting circuit.
Claims (1)
検出し、その放送信号に対応する同調電圧を記憶する構
成の同調電圧プレセット機能を持った電子選局回路を有
するテレビ受信機において、前記同調電圧のプレセット
時に前記チューナの受信バンドに対応して高周波増幅器
の利得制御に重みづけを行なう利得制御回路を設け、前
記高周波増幅器の利得を前記重みづけに従って制御する
ことを特徴とした利得制御装置。In a television receiver having an electronic tuning circuit having a tuning voltage presetting function configured to sweep the tuning voltage of the tuner, automatically detect a desired broadcast signal, and store the tuning voltage corresponding to the broadcast signal, A gain control circuit that weights the gain control of the high frequency amplifier according to the reception band of the tuner when presetting the tuning voltage, and controls the gain of the high frequency amplifier according to the weighting. Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981114120U JPS5819519U (en) | 1981-07-31 | 1981-07-31 | automatic gain control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981114120U JPS5819519U (en) | 1981-07-31 | 1981-07-31 | automatic gain control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5819519U true JPS5819519U (en) | 1983-02-07 |
| JPH0139021Y2 JPH0139021Y2 (en) | 1989-11-21 |
Family
ID=29908407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981114120U Granted JPS5819519U (en) | 1981-07-31 | 1981-07-31 | automatic gain control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182295U (en) * | 1984-11-02 | 1986-05-31 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4818439B2 (en) | 2010-01-15 | 2011-11-16 | 株式会社東芝 | Electronic device and reception channel presetting method |
-
1981
- 1981-07-31 JP JP1981114120U patent/JPS5819519U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182295U (en) * | 1984-11-02 | 1986-05-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0139021Y2 (en) | 1989-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5819519U (en) | automatic gain control device | |
| JPS59144972U (en) | television receiver | |
| JPS6123779U (en) | CATV converter | |
| JPS62159063U (en) | ||
| JPS5917624U (en) | AGC circuit | |
| JPS6012386Y2 (en) | audio circuit device | |
| JPS5996950U (en) | Television receiver tuner circuit | |
| JPS6183348U (en) | ||
| JPS5920768U (en) | Television receiver audio demodulation circuit | |
| JPS60163877U (en) | Video signal receiving circuit | |
| JPS5823428U (en) | Receiver tuning display device | |
| JPS58566U (en) | automatic frequency control device | |
| JPS5883870U (en) | television receiver | |
| JPS5837242U (en) | receiving circuit | |
| JPS599676U (en) | Video tape recorder antenna terminal board device | |
| JPS60160639U (en) | Radio receiver switching circuit | |
| JPH01155780A (en) | Television-cum-fm broadcasting receiver | |
| JPS5890744U (en) | FM receiver | |
| JPS58178745U (en) | intermediate frequency amplifier circuit | |
| JPS6090944U (en) | FM-TV automatic switching circuit | |
| JPS593643U (en) | computer control tuner | |
| JPS5950130U (en) | radio receiver | |
| JPH02128489U (en) | ||
| JPS593675U (en) | Automatic contrast adjustment circuit for television receivers | |
| JPS58111538U (en) | FM wide receiver |