JPS596700A - Synthesizer receiver - Google Patents
Synthesizer receiverInfo
- Publication number
- JPS596700A JPS596700A JP57114002A JP11400282A JPS596700A JP S596700 A JPS596700 A JP S596700A JP 57114002 A JP57114002 A JP 57114002A JP 11400282 A JP11400282 A JP 11400282A JP S596700 A JPS596700 A JP S596700A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- path
- path disturbance
- disturbance
- stereophonic
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
- H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
Abstract
Description
【発明の詳細な説明】
本発明は、マルチ・ぐス妨害対策機能を有する受信器に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a receiver having a multi-signal interference countermeasure function.
周波数変調波が複数の伝搬系路を経て受信器に入力され
ると、直接波と反射波、回折波などの間接波との間に干
渉が起り復調信号に干渉歪が発生する。この干渉歪はマ
ルチパス妨害と呼ばれるものであり、高層建築物が増加
１．ている今日では重大な問題となっている。When a frequency modulated wave is input to a receiver through a plurality of propagation paths, interference occurs between the direct wave and indirect waves such as reflected waves and diffracted waves, resulting in interference distortion in the demodulated signal. This interference distortion is called multipath interference, and the number of high-rise buildings is increasing.1. It has become a serious problem today.
干渉歪（マルチパス妨害歪）は復調信号の高い周波数領
域において著しくなる。そのためコンポジット信号の中
で、高い周波数領域を占める サブ信号が著しい影響を
受ける。つまりマルチパス妨害歪はステレオ放送受信時
に特に著しくなる。Interference distortion (multipath interference distortion) becomes significant in the high frequency region of the demodulated signal. Therefore, sub-signals occupying high frequency regions in the composite signal are significantly affected. In other words, multipath interference distortion becomes particularly noticeable when receiving stereo broadcasts.
そこで、コンポノット信号中のサブ信号を除去してモノ
ラル信号化し、次にこの信号を疑似ステレオ化すること
によシマルチ・？ス妨害歪を大幅に軽減できる。Therefore, by removing the sub-signals in the component signal to make it a monaural signal, and then converting this signal into pseudo-stereo, it is possible to create a multi-channel signal. interference distortion can be significantly reduced.
本発明は上記事項に着目したものであり、その目的はマ
ルチパス妨害対策機能を有する受信器を安価に提供する
ことにある。The present invention focuses on the above-mentioned problem, and its purpose is to provide a receiver having a multipath interference countermeasure function at a low cost.
図は本発明による一実施例のブロック図であり、以下こ
れを基にして説明を行う。The figure is a block diagram of one embodiment of the present invention, and the following description will be based on this.
１は高周波数増幅器、混合器、局部発振器より構成され
るフロントエンドである。２は中間周波数増幅器である
。３はＦＭ検波器であシ、出力信号をＭＰＸ回路４と・
やイロット信号検出回路９に供給する。４ばＭＰＸ回路
であり、スイッチング信号をＰＬＬ回路１１から供給し
、強制モノラル端子をモツ。５は右チャンネルのフィル
タ■である。６は左チャンネルのフィルタ■であシ１、
左チャンネルのフづルタ特性とは異な特性をもち、疑似
ステレオ化を可能としている。７は信号切換器工である
。８は信号切換器ＩＩであり、信号切換器７と連動して
信号切換が実行され、この制御信号はマイクロプロセッ
サ１２より供給される。９はノｅイロット信号検出器で
ある。１０はマルチ繋ス妨害検出器であり、パイロット
信号の振幅変調の程度により判定を行う。１１はＰＬＬ
構成のスイッチングイぎ号発生器である。１２はマ・ｒ
クロプロセッサでアシ、信号切換器７，８の制御信号発
生手段と、ＭＰＸ回路４を強制モノラル動作とするため
の制御信号発生手段、それとマルチｉＥス妨害検出器１
００判定結果を入力する手段を有する。１３はマルチ・
ぐス妨害対策機能の動作、非動作を手動で選択するだめ
の操作手段である。1 is a front end consisting of a high frequency amplifier, a mixer, and a local oscillator. 2 is an intermediate frequency amplifier. 3 is an FM detector, and the output signal is connected to the MPX circuit 4.
and the pilot signal detection circuit 9. 4 is an MPX circuit, which supplies switching signals from the PLL circuit 11 and has a forced monaural terminal. 5 is a right channel filter ■. 6 is the left channel filter 1,
It has characteristics different from the filter characteristics of the left channel, making it possible to create pseudo-stereo. 7 is a signal switching engineer. Reference numeral 8 denotes a signal switch II, which performs signal switching in conjunction with the signal switch 7, and this control signal is supplied from the microprocessor 12. 9 is a pilot signal detector. Reference numeral 10 denotes a multi-connection interference detector, which makes a determination based on the degree of amplitude modulation of the pilot signal. 11 is PLL
This is a switching signal generator of the configuration. 12 is ma.r.
Control signal generation means for the signal switchers 7 and 8, control signal generation means for forcing the MPX circuit 4 to operate in monaural mode, and a multi-iE interference detector 1 are provided in the microprocessor.
It has means for inputting the 00 determination result. 13 is multi-
This is an operation means for manually selecting whether or not to operate the signal interference countermeasure function.
ここでマルチノＰス妨害が発生したステレオ放送を党信
したものとすれば、マルチ・ぐス妨害検出器１０の検出
結果により、マイクロプロセッサ１２は自動的にマルチ
／、ｏス妨害対策機能を動作させる。Here, if we assume that the stereo broadcast in which multi-system interference has occurred is believed, the microprocessor 12 automatically operates the multi-speed interference countermeasure function based on the detection result of the multi-speed interference detector 10. let
つまりマイクロプロセッサ１２によｆｉ ＭＰ、Ｘ回路
４の動作を強制モノラル動作とする制御信号を出力し、
同時に信号切換器７，８を制御して左右両チャンネルの
信号系路に周波数特性の異なるフィルタ５，６を信号系
路に挿入して疑似ステレオ化する。フィルタ５，６、の
周波数特性は互いに異なシ、通常相補的な特性をもつも
のである。マルチ・ぐス妨害が発生していない鳴合は上
記動作は行なわない。In other words, the microprocessor 12 outputs a control signal that forces the operation of the fi MP and X circuits 4 to be monaural;
Simultaneously, the signal switchers 7 and 8 are controlled to insert filters 5 and 6 having different frequency characteristics into the signal paths of both the left and right channels to create pseudo-stereo. The frequency characteristics of the filters 5 and 6 are different from each other, but usually have complementary characteristics. The above operation is not performed in the case of a ringing in which multi-gust interference is not occurring.
まだ手動でマルチパス妨害対策機能の動作、非動作を選
択するには操作手段１３を用いる。The operating means 13 is still used to manually select whether or not to operate the multipath interference countermeasure function.
以上本発明によれば、マルチ・ぞス妨害歪を大幅に改善
でき、マルチパス妨害対策機能を有する受信器を安価に
提供できる。As described above, according to the present invention, multi-path interference distortion can be significantly improved, and a receiver having a multi-path interference countermeasure function can be provided at a low cost.
図は本発明の一実施例によるブロック図である。
１・・・フロントエンド、２・・・中間周波数増幅器、
３・・・ＦＭ検波器、４・・・ＭＰＸ回路。５・・・フ
ィルタＩ、６・・フィルタ■、７・・・信号切換器Ｉ、
８・・・１言号切換器■、９・・・・モイロット信号検
出器、１０・・・マルチノ母ス妨害検出器、１１・・・
スイッチング信号発生器、１２・・・マイクロプロセッ
サ、１３・・・操作手段。The figure is a block diagram according to one embodiment of the present invention. 1...Front end, 2...Intermediate frequency amplifier,
3...FM detector, 4...MPX circuit. 5... Filter I, 6... Filter ■, 7... Signal switch I,
8...1 language changer■, 9...Moilot signal detector, 10...Martino motherboard interference detector, 11...
Switching signal generator, 12... microprocessor, 13... operating means.
Claims (2)
の動作を強制的にモノラル動作とする手段と、ＭＰＸ回
路の出力系路である右信号系路と左信号系路にそれぞれ
信号切換手段と周波数特性の異なるフィルタ回路を有し
、操作手段によシマルチノクス妨害対策機能を動作させ
たとき、ＭＰＸ回路の動作を強制的にモノラル動作とし
、かつＭＰＸ回路の出力信号系路に周波数特性の異なる
フィルタを挿入し疑似ステレオ化することを特徴とする
シンセサイザ受信器。(1) As a multipath interference countermeasure function, there is a means for forcing the operation of the MPX circuit to monaural operation, and a signal switching means and frequency characteristics for the right signal path and left signal path, which are the output paths of the MPX circuit. When the Simultinox interference countermeasure function is operated by the operating means, the MPX circuit is forced to operate in monaural mode, and a filter with different frequency characteristics is inserted into the output signal path of the MPX circuit. A synthesizer receiver that is characterized by creating pseudo-stereo.
マルチ・Ｐス対策機能を制御する手段を有することを特
徴とする特許請求の範囲第（１）項記載のシンセサイザ
受信器。(2) The synthesizer receiver according to claim 1, further comprising a multi-path detection means and a means for automatically controlling the multi-path countermeasure function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114002A JPS596700A (en) | 1982-07-02 | 1982-07-02 | Synthesizer receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114002A JPS596700A (en) | 1982-07-02 | 1982-07-02 | Synthesizer receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596700A true JPS596700A (en) | 1984-01-13 |
Family
ID=14626596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57114002A Pending JPS596700A (en) | 1982-07-02 | 1982-07-02 | Synthesizer receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596700A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6356841U (en) * | 1986-09-30 | 1988-04-15 | ||
| JPH01277032A (en) * | 1988-04-28 | 1989-11-07 | Alpine Electron Inc | Fm stereo receiver |
| JP2014502442A (en) * | 2010-11-05 | 2014-01-30 | セミコンダクター アイディアズ トゥー ザ マーケット（アイ ティー オー エム）ビー ヴィ | Method for reducing noise contained in stereo signal, stereo signal processing device and FM receiver using the method |
-
1982
- 1982-07-02 JP JP57114002A patent/JPS596700A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6356841U (en) * | 1986-09-30 | 1988-04-15 | ||
| JPH0418266Y2 (en) * | 1986-09-30 | 1992-04-23 | ||
| JPH01277032A (en) * | 1988-04-28 | 1989-11-07 | Alpine Electron Inc | Fm stereo receiver |
| JP2014502442A (en) * | 2010-11-05 | 2014-01-30 | セミコンダクター アイディアズ トゥー ザ マーケット（アイ ティー オー エム）ビー ヴィ | Method for reducing noise contained in stereo signal, stereo signal processing device and FM receiver using the method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4486897A (en) | Television receiver for demodulating a two-language stereo broadcast signal | |
| JPS596700A (en) | Synthesizer receiver | |
| EP0955732A1 (en) | Method and device to demultiplex a frequency demodulated stereo-multiplex-signal | |
| JPS598442A (en) | Receiver | |
| EP0399534B1 (en) | Fm stereophonic receiver | |
| GB2238213A (en) | Multiplex stereophonic demodulator for A2 and NICAM | |
| JPH07154718A (en) | Television receiver | |
| JPS58129851A (en) | Fm receiver | |
| KR960006757B1 (en) | Voice signal output apparatus | |
| JPH0338120A (en) | Diversity fm multiplex broadcast receiver | |
| JPS5868328A (en) | Space diversity reception system | |
| JP2937103B2 (en) | Audio program transmission control device | |
| JP2001513280A (en) | Method for controlling stereo channel separation of audio signal and apparatus for implementing the method | |
| JP4141040B2 (en) | AM / FM receiver | |
| JPH0537874A (en) | Surround circuit | |
| JP2769717B2 (en) | Multiple signal simultaneous receiver | |
| JPH08130520A (en) | Voice multiplexing and demodulating circuit | |
| JPH0426572B2 (en) | ||
| JPH0150145B2 (en) | ||
| JPS585053A (en) | Muting circuit | |
| JPH0414814B2 (en) | ||
| JPH034630A (en) | Fm stereo receiver | |
| JPH06125319A (en) | Fm stereo receiver | |
| JPH06197087A (en) | Stereo broadcast signal receiver | |
| JPS58166884A (en) | Sound multiplex receiving circuit |