JPH0398529U - - Google Patents
Info
- Publication number
- JPH0398529U JPH0398529U JP790390U JP790390U JPH0398529U JP H0398529 U JPH0398529 U JP H0398529U JP 790390 U JP790390 U JP 790390U JP 790390 U JP790390 U JP 790390U JP H0398529 U JPH0398529 U JP H0398529U
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- circuit
- tuner
- automatic
- voltage application
- 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 3
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図は本考案の一実施例の自動同調チユーナ
を示すブロツク図、第２図は第１図の同調制御回
路を示すブロツク図、第３図は従来の同調チユー
ナを示すブロツク図である。
１，１′……ＬＣ同調回路、２……ＲＦアンプ
、３……ミキサ、４……オシレータ、５……ＩＦ
アンプ、６……チユーナ、７……ＩＦ出力端子、
８……チユーニング電圧印加端子、９……アンテ
ナ、１０……チヤンネルデータ入力端子、１１…
…制御データ入力端子、１２……同調制御回路、
１３……ＰＬＬ回路、１４……Ｄ／Ａコンバータ
、１５……ＣＰＵ、１６……Ａ／Ｄコンバータ、
１７……ＥＥＰＲＯＭ、１８……ウインドウ・コ
ンパレータ。
FIG. 1 is a block diagram showing an automatic tuning tuner according to an embodiment of the present invention, FIG. 2 is a block diagram showing the tuning control circuit of FIG. 1, and FIG. 3 is a block diagram showing a conventional tuning tuner. 1, 1'...LC tuning circuit, 2...RF amplifier, 3...Mixer, 4...Oscillator, 5...IF
Amplifier, 6... tuner, 7... IF output terminal,
8...Tuning voltage application terminal, 9...Antenna, 10...Channel data input terminal, 11...
...control data input terminal, 12...tuning control circuit,
13...PLL circuit, 14...D/A converter, 15...CPU, 16...A/D converter,
17...EEPROM, 18...Window comparator.
Claims (1)
チユーニング電圧印加端子とを備えた自動同調チ
ユーナにおいて、前記回路の特定入力信号に対す
る同調点をあらかじめ探し出しデータ化して記憶
しておく手段が設けられていることを特徴とする
自動同調チユーナ。 An automatic tuning tuner equipped with an LC tuning circuit having a varactor diode and a tuning voltage application terminal, characterized in that a means is provided for searching in advance a tuning point for a specific input signal of the circuit, converting it into data, and storing it. automatic tuning tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP790390U JPH0398529U (en) | 1990-01-29 | 1990-01-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP790390U JPH0398529U (en) | 1990-01-29 | 1990-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0398529U true JPH0398529U (en) | 1991-10-14 |
Family
ID=31511552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP790390U Pending JPH0398529U (en) | 1990-01-29 | 1990-01-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0398529U (en) |
-
1990
- 1990-01-29 JP JP790390U patent/JPH0398529U/ja active Pending
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