JPS6266425U - - Google Patents
Info
- Publication number
- JPS6266425U JPS6266425U JP15909985U JP15909985U JPS6266425U JP S6266425 U JPS6266425 U JP S6266425U JP 15909985 U JP15909985 U JP 15909985U JP 15909985 U JP15909985 U JP 15909985U JP S6266425 U JPS6266425 U JP S6266425U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- signal
- audio
- frequency signal
- broadcast waves
- 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.)
- Granted
Links
- 230000005236 sound signal Effects 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の実施例を説明する回路ブロ
ツク図、第２図は従来例を説明する回路ブロツク
図である。
１……フロントエンド、１ａ……ＦＭ放送波用
フロントエンド、１ｂ……テレビジヨン放送波Ｖ
ＨＦ帯用フロントエンド、１ｄ……テレビジヨン
放送波ＵＨＦ帯用フロントエンド、２ａ……ＳＩ
Ｆ増幅回路、２ｂ……ＳＩＦ増幅回路、３ａ，３
ｂ……それぞれＦＭ検波回路、４ａ，４ｂ……そ
れぞれ同調検出回路、５……ＮＡＮＤ回路、６…
…音声増幅器、７……発光ダイオード、Ｈ……ハ
イレベル、Ｌ……ローレベル。
FIG. 1 is a circuit block diagram illustrating an embodiment of this invention, and FIG. 2 is a circuit block diagram illustrating a conventional example. 1...Front end, 1a...Front end for FM broadcast waves, 1b...Television broadcast waves V
Front end for HF band, 1d...Front end for television broadcast wave UHF band, 2a...SI
F amplifier circuit, 2b...SIF amplifier circuit, 3a, 3
b... FM detection circuit, respectively, 4a, 4b... Tuning detection circuit, respectively, 5... NAND circuit, 6...
...Audio amplifier, 7...Light emitting diode, H...High level, L...Low level.
Claims (1)
のテレビジヨン放送波の音声信号波を同一の中間
周波信号に変換してＦＭ復調するスーパーヘテロ
ダイン方式のＦＭ受信装置において、前記テレビ
ジヨン放送波の音声信号を再生する際に、映像信
号を音声中間周波数より４．５ＭＨｚ離れた映像
中間周波信号に変換して同調の有無を検出し、音
声中間周波信号及び映像中間周波信号が共に同調
したときに光表示することを特徴とするＦＭ受信
装置。 In a superheterodyne FM receiving device that converts FM broadcast waves in the VHF band and audio signal waves of television broadcast waves in the VHF band and UHF band into the same intermediate frequency signal and FM demodulates the same, the audio signal of the television broadcast waves is When reproducing a signal, the video signal is converted to a video intermediate frequency signal 4.5 MHz apart from the audio intermediate frequency to detect the presence or absence of synchronization, and when the audio intermediate frequency signal and the video intermediate frequency signal are both synchronized, an optical An FM receiving device characterized by displaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15909985U JPH0241951Y2 (en) | 1985-10-16 | 1985-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15909985U JPH0241951Y2 (en) | 1985-10-16 | 1985-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6266425U true JPS6266425U (en) | 1987-04-24 |
| JPH0241951Y2 JPH0241951Y2 (en) | 1990-11-08 |
Family
ID=31083211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15909985U Expired JPH0241951Y2 (en) | 1985-10-16 | 1985-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241951Y2 (en) |
-
1985
- 1985-10-16 JP JP15909985U patent/JPH0241951Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241951Y2 (en) | 1990-11-08 |
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