JPS61179851U - - Google Patents
Info
- Publication number
- JPS61179851U JPS61179851U JP6310185U JP6310185U JPS61179851U JP S61179851 U JPS61179851 U JP S61179851U JP 6310185 U JP6310185 U JP 6310185U JP 6310185 U JP6310185 U JP 6310185U JP S61179851 U JPS61179851 U JP S61179851U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- stereo
- broadcast receiver
- detection circuit
- audio signals
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
- Stereo-Broadcasting Methods (AREA)
Description
第１図は、本考案のステレオ放送受信機の一実
施例の系統図であり、第２図は、米国で現在放送
されている４ＧＨｚ帯の衛星放送の１個のチヤン
ネルのスペクトル図であり、第３図は、従来のス
テレオ放送受信機の一例の系統図である。
１，２０：ステレオ放送受信機、７，２３：第
１の中間周波フイルタ、８：第１のＦＭ検波回路
、１０，２４：第２の中間周波フイルタ、１１：
第２のＦＭ検波回路、２１：周波数変換回路、２
２：局部発振回路。
FIG. 1 is a system diagram of an embodiment of the stereo broadcast receiver of the present invention, and FIG. 2 is a spectrum diagram of one channel of 4 GHz band satellite broadcasting currently broadcast in the United States. FIG. 3 is a system diagram of an example of a conventional stereo broadcast receiver. 1, 20: Stereo broadcast receiver, 7, 23: First intermediate frequency filter, 8: First FM detection circuit, 10, 24: Second intermediate frequency filter, 11:
Second FM detection circuit, 21: Frequency conversion circuit, 2
2: Local oscillation circuit.
Claims (1)
ぞれ周波数の異なる２波の搬送波で放送されるス
テレオ放送を受信するためのステレオ放送受信機
であつて、前記２波の搬送波を１個の周波数変換
回路で周波数変化させ、この周波数変換回路の出
力から第１の中間周波フイルタと第２の中間周波
フイルタにより第１の中間周波と第２の中間周波
をそれぞれ抽出させ、さらに、これらの第１の中
間周波と第２の中間周波を第１の検波回路と第２
の検波回路で右チヤンネルと左チヤンネルの音声
信号に復調させるように構成したことを特徴とす
るステレオ放送受信機。 A stereo broadcast receiver for receiving stereo broadcasts in which right channel and left channel audio signals are broadcast using two carrier waves with different frequencies, and the two carrier waves are converted into frequencies by one frequency conversion circuit. A first intermediate frequency and a second intermediate frequency are extracted from the output of this frequency conversion circuit by a first intermediate frequency filter and a second intermediate frequency filter, respectively, and further, these first intermediate frequency and The second intermediate frequency is transmitted between the first detection circuit and the second intermediate frequency.
A stereo broadcast receiver characterized in that it is configured to demodulate right channel and left channel audio signals using a detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6310185U JPS61179851U (en) | 1985-04-25 | 1985-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6310185U JPS61179851U (en) | 1985-04-25 | 1985-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61179851U true JPS61179851U (en) | 1986-11-10 |
Family
ID=30592931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6310185U Pending JPS61179851U (en) | 1985-04-25 | 1985-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61179851U (en) |
-
1985
- 1985-04-25 JP JP6310185U patent/JPS61179851U/ja active Pending
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