JPH01137641U - - Google Patents
Info
- Publication number
- JPH01137641U JPH01137641U JP3340988U JP3340988U JPH01137641U JP H01137641 U JPH01137641 U JP H01137641U JP 3340988 U JP3340988 U JP 3340988U JP 3340988 U JP3340988 U JP 3340988U JP H01137641 U JPH01137641 U JP H01137641U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- power supply
- amplitude
- circuit
- output signal
- 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
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (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図は従来の衛星放送受信機を
示すブロツク図である。
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……電流遮断回路、Ｃ……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, and FIG. 2 is a block diagram showing a conventional satellite broadcasting receiver. 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...Current cutoff circuit, C... 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―Ｆ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ＢＳ―ＩＦ信号入力端子に重畳される前記
ＢＳコンバータ用の直流電源電圧を発生するＢＳ
コンバータ用電源回路と、 前記ＢＳコンバータ用電源回路の出力電流値が
所定範囲外の場合は、前記ＢＳコンバータへの電
源供給を遮断する電流遮断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; and a BS that generates a DC power supply voltage for the BS converter that is superimposed on the BS-IF signal input terminal.
A satellite comprising: a converter power supply circuit; and a current cutoff circuit that cuts off power supply to the BS converter when an output current value of the BS converter power supply circuit is outside a predetermined range. Broadcast receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3340988U JPH01137641U (en) | 1988-03-14 | 1988-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3340988U JPH01137641U (en) | 1988-03-14 | 1988-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137641U true JPH01137641U (en) | 1989-09-20 |
Family
ID=31260089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3340988U Pending JPH01137641U (en) | 1988-03-14 | 1988-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0321187A (en) * | 1989-06-19 | 1991-01-29 | Nec Home Electron Ltd | Satellite broadcast receiving equipment |
-
1988
- 1988-03-14 JP JP3340988U patent/JPH01137641U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0321187A (en) * | 1989-06-19 | 1991-01-29 | Nec Home Electron Ltd | Satellite broadcast receiving equipment |
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