JPS593626U - automatic search tuning device - Google Patents
automatic search tuning deviceInfo
- Publication number
- JPS593626U JPS593626U JP9910982U JP9910982U JPS593626U JP S593626 U JPS593626 U JP S593626U JP 9910982 U JP9910982 U JP 9910982U JP 9910982 U JP9910982 U JP 9910982U JP S593626 U JPS593626 U JP S593626U
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- automatic
- control signal
- tuner
- output
- 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
Landscapes
- 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
図は本考案による自動探局同調装置の一実施例を示す回
路図である。
１・・・チューナ一部、２・・・アンテナ、３・・・同
調制御部、４・・・中間周波増幅回路、５・・・検波回
路、６・・・自動利得制御回路、７・・・放送受信検出
部、８・・・探局状態検出部、９・・・微分回路、１０
・・・検波回路、１１・・・ゲインスイッチ。The figure is a circuit diagram showing an embodiment of an automatic station search and tuning device according to the present invention. DESCRIPTION OF SYMBOLS 1... Tuner part, 2... Antenna, 3... Tuning control part, 4... Intermediate frequency amplification circuit, 5... Detection circuit, 6... Automatic gain control circuit, 7... - Broadcast reception detection section, 8... Station search state detection section, 9... Differentiation circuit, 10
...detection circuit, 11...gain switch.
Claims (1)
るための自動利得制御信号を発生して受信系の利得を制
御する自動利得制御機能と、前記チューナ一部の同調を
制御する同調制御部から同調をスキャンさせる同調制御
信号を発生させるとともにチューナ一部の出力信号を検
波した信号から放送受信を判別する放送受信検出部の出
力によって発生される同調制御信号を固定して受信状態
をロックする自動探局機能とを備えた自動探局同調装置
に於いて、 前記同調制御信号の変化を検出して自動探局状態を検出
する探局状態検出部と、この探局状態検出部の出力によ
り作動して前記自動利得制御信号を減衰させることによ
り、受信感度を下げて自動探局時に弱信号放送をスキッ
プさせることを特徴とする自動探局同調装置。[Claims for Utility Model Registration] An automatic gain control function for controlling the gain of a receiving system by generating an automatic gain control signal for making a fixed ratio of reception output based on the output signal of a part of the tuner, and the part of the tuner. A tuning control section that controls the tuning of the tuner generates a tuning control signal that scans the tuning, and a tuning control signal that is generated by the output of a broadcast reception detection section that determines broadcast reception from a signal detected from a part of the output signal of the tuner. In an automatic station searching and tuning device equipped with an automatic station searching function that fixes and locks the reception state, the station searching state detection section detects the automatic station searching state by detecting a change in the tuning control signal; An automatic station search tuning device characterized in that it is activated by the output of a station search state detection section to attenuate the automatic gain control signal, thereby lowering reception sensitivity and skipping weak signal broadcasting during automatic station search.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9910982U JPS593626U (en) | 1982-06-30 | 1982-06-30 | automatic search tuning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9910982U JPS593626U (en) | 1982-06-30 | 1982-06-30 | automatic search tuning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS593626U true JPS593626U (en) | 1984-01-11 |
Family
ID=30235015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9910982U Pending JPS593626U (en) | 1982-06-30 | 1982-06-30 | automatic search tuning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS593626U (en) |
-
1982
- 1982-06-30 JP JP9910982U patent/JPS593626U/en active Pending
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