JPH03107876U - - Google Patents
Info
- Publication number
- JPH03107876U JPH03107876U JP1990016957U JP1695790U JPH03107876U JP H03107876 U JPH03107876 U JP H03107876U JP 1990016957 U JP1990016957 U JP 1990016957U JP 1695790 U JP1695790 U JP 1695790U JP H03107876 U JPH03107876 U JP H03107876U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- circuit
- satellite broadcasting
- audio
- 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
- 230000005236 sound signal Effects 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Circuits Of Receivers In General (AREA)
Description
第１図は本考案の一実施例を示す衛星放送受信
機の電気回路のブロツク図、第２図は本考案の一
実施例を示すＦＭ音声ダミーアダプタの電気回路
のブロツク図、第３図は従来例を示す衛星放送受
信機の電気回路のブロツク図である。
１…入力端子、２…高周波増幅回路、３…混合
器、４…２ＩＦ増幅回路、５，８，３３…ＢＰＦ
、６，３６…ＦＭ復調回路、７…映像信号処理回
路、９…４ＤＰＳＫ復調回路、１０…デスクラン
ブラ、１１…映像信号再生回路、１２…音声信号
再生回路、１３，１６…スイツチ、１４，１５，
１９，３７…増幅器、１７…ＰＣＭ復調回路、１
８…Ａ／Ｄ変換器、２０…ＬＥＤ、３０…ＦＭ音
声ダミーアダプタ、３１…ＦＭ再生回路、３２…
ＦＭ端子、３４…ＩＦコンバータ、３５…ＩＦ・
ＢＰＦ切換回路。
Fig. 1 is a block diagram of an electric circuit of a satellite broadcasting receiver showing an embodiment of the present invention, Fig. 2 is a block diagram of an electric circuit of an FM audio dummy adapter showing an embodiment of the present invention, and Fig. 3 is a block diagram of an electric circuit of a satellite broadcasting receiver showing an embodiment of the present invention. 1 is a block diagram of an electric circuit of a satellite broadcasting receiver showing a conventional example. 1...Input terminal, 2...High frequency amplifier circuit, 3...Mixer, 4...2IF amplifier circuit, 5, 8, 33...BPF
, 6, 36... FM demodulation circuit, 7... Video signal processing circuit, 9... 4DPSK demodulation circuit, 10... Descrambler, 11... Video signal reproducing circuit, 12... Audio signal reproducing circuit, 13, 16... Switch, 14, 15 ，
19, 37...Amplifier, 17...PCM demodulation circuit, 1
8...A/D converter, 20...LED, 30...FM audio dummy adapter, 31...FM playback circuit, 32...
FM terminal, 34...IF converter, 35...IF・
BPF switching circuit.
Claims (1)
ランブルのかかつていない放送とを受信可能とし
た衛星放送受信機において、脱着可能なデスクラ
ンブラの代わりにＦＭ音声信号再生回路を内蔵し
たＦＭ音声ダミーアダプタを装着して衛星放送信
号のＦＭ変調された音声搬送波を前記ＦＭ音声信
号再生回路でＦＭ復調して音声信号を再生可能と
したことを特徴とする衛星放送受信機。 (2) 前記ＦＭ音声信号再生回路が復調された音
声信号よりＦＭ音声信号のみを取り出すＢＰＦ回
路と、前記ＦＭ音声信号より受信チヤンネルを選
択して所定の中間周波信号に変換するＩＦコンバ
ータと、前記中間周波信号より雑音成分が除去さ
れた信号のみを取り出して出力するＩＦ・ＢＰＦ
切換回路と、前記出力をＦＭ復調してＡＭ音声信
号波に変換して出力するＦＭ復調回路からなるこ
とを特徴とする請求項(1)記載の衛星放送受信機
。[Claims for Utility Model Registration] (1) A satellite broadcasting receiver capable of receiving scrambled broadcasts and scrambled broadcasts that has never been scrambled, which is equipped with an FM audio signal reproducing circuit instead of a detachable descrambler. A satellite broadcasting receiver characterized in that a built-in FM audio dummy adapter is installed to enable FM demodulation of an FM-modulated audio carrier wave of a satellite broadcasting signal by the FM audio signal reproducing circuit to reproduce an audio signal. (2) a BPF circuit that extracts only the FM audio signal from the audio signal demodulated by the FM audio signal reproducing circuit; an IF converter that selects a reception channel from the FM audio signal and converts it into a predetermined intermediate frequency signal; IF/BPF that extracts and outputs only the signal from which noise components have been removed from the intermediate frequency signal
2. The satellite broadcasting receiver according to claim 1, further comprising a switching circuit and an FM demodulation circuit for FM demodulating the output, converting it into an AM audio signal wave, and outputting the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990016957U JPH03107876U (en) | 1990-02-21 | 1990-02-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990016957U JPH03107876U (en) | 1990-02-21 | 1990-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03107876U true JPH03107876U (en) | 1991-11-06 |
Family
ID=31520194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990016957U Pending JPH03107876U (en) | 1990-02-21 | 1990-02-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03107876U (en) |
-
1990
- 1990-02-21 JP JP1990016957U patent/JPH03107876U/ja active Pending
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