JPH024384U - - Google Patents
Info
- Publication number
- JPH024384U JPH024384U JP8090288U JP8090288U JPH024384U JP H024384 U JPH024384 U JP H024384U JP 8090288 U JP8090288 U JP 8090288U JP 8090288 U JP8090288 U JP 8090288U JP H024384 U JPH024384 U JP H024384U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- circuit
- voltage
- agc
- input terminal
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の衛星放送受信機の実施例を示
すブロツク図、第２図は第１図の動作説明用の波
形図、第３図は従来の衛星放送受信機を示すブロ
ツク図、第４図は従来のＢＳアンテナの角度設定
治具を示す図である。
１……ＢＳアンテナ、２……ＢＳコンバータ、
３……同軸ケーブル、４……ＢＳチユーナ、５…
…ＢＳ−ＩＦ信号入力端子、６……周波数変換回
路、７……ＡＧＣ回路、８……ＦＭ復調回路、９
……映像信号処理回路、１０……映像信号出力端
子、１１……音声信号処理回路、１２……音声信
号出力端子、１３……ＢＳコンバータ用電源回路
、１４，１９……ＢＳアンテナの角度設定治具、
１５……ＢＳコンバータ用電源、１６……電界強
度計、１７……ＡＧＣの電圧変換回路、１８……
重畳回路、２０……整流回路、２１……直流電圧
計、Ｃ１，Ｃ２……コンデンサ、Ｌ……インダク
タンス。
Fig. 1 is a block diagram showing an embodiment of the satellite broadcasting receiver of the present invention, Fig. 2 is a waveform diagram for explaining the operation of Fig. 1, and Fig. 3 is a block diagram showing a conventional satellite broadcasting receiver. FIG. 4 is a diagram showing a conventional angle setting jig for a BS antenna. 1...BS antenna, 2...BS converter,
3... Coaxial cable, 4... BS tuner, 5...
...BS-IF signal input terminal, 6...Frequency conversion circuit, 7...AGC circuit, 8...FM demodulation circuit, 9
...Video signal processing circuit, 10...Video signal output terminal, 11...Audio signal processing circuit, 12...Audio signal output terminal, 13...Power supply circuit for BS converter, 14, 19...BS antenna angle setting jig,
15...Power supply for BS converter, 16...Field strength meter, 17...AGC voltage conversion circuit, 18...
Superposition circuit, 20... Rectifier circuit, 21... DC voltmeter, C1 , C2 ... Capacitor, L... Inductance.
Claims (1)
波数変換されて伝送されるＢＳ−ＩＦ信号を入力
するためのＢＳ−ＩＦ信号入力端子と、 前記ＢＳ−ＩＦ信号を中間周波数帯域に変換す
る周波数変換回路と、 前記周波数変換回路の出力信号の振幅を検出し
、これに対応する直流ＡＧＣ電圧を発生し、前記
直流ＡＧＣ電圧により利得を制御して出力信号の
振幅が一定になるように制御するＡＧＣ回路と、 前記直流ＡＧＣ電圧を対応したパルスに変換し
て、前記ＢＳ−ＩＦ信号入力端子に重畳するＡＧ
Ｃ電圧変換回路と、 前記ＢＳコンバータ用の直流電源電圧を発生し
、前記ＢＳ−ＩＦ信号入力端子に重畳するＢＳコ
ンバータ用電源回路とを有して構成したことを特
徴とする衛星放送受信機。[Claims for Utility Model Registration] A BS-IF signal input terminal for inputting a BS-IF signal received by a BS antenna, frequency-converted by a BS converter, and transmitted; a frequency conversion circuit that converts the output signal into a frequency converter; detects the amplitude of the output signal of the frequency conversion circuit, generates a DC AGC voltage corresponding to the amplitude, and controls the gain by the DC AGC voltage so that the amplitude of the output signal is constant; an AGC circuit that controls the DC AGC voltage, and an AG that converts the DC AGC voltage into a corresponding pulse and superimposes it on the BS-IF signal input terminal.
1. A satellite broadcasting receiver comprising: a C voltage conversion circuit; and a BS converter power supply circuit that generates a DC power supply voltage for the BS converter and superimposes it on the BS-IF signal input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8090288U JPH024384U (en) | 1988-06-17 | 1988-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8090288U JPH024384U (en) | 1988-06-17 | 1988-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH024384U true JPH024384U (en) | 1990-01-11 |
Family
ID=31305715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8090288U Pending JPH024384U (en) | 1988-06-17 | 1988-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH024384U (en) |
-
1988
- 1988-06-17 JP JP8090288U patent/JPH024384U/ja active Pending
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