JPS6119234A

JPS6119234A - Receiver

Info

Publication number: JPS6119234A
Application number: JP13996484A
Authority: JP
Inventors: Shigeatsu Asari; 栄厚浅利
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1984-07-05
Filing date: 1984-07-05
Publication date: 1986-01-28

Abstract

PURPOSE:To improve the transmission efficiency of information by demodulating an another data modulation signal superimposed on an FM broadcast signal by a separate data demodulating means and using the other decoded data to control a reception frequency control means thereby selecting automatically a reception frequency commanded by the other data. CONSTITUTION:When frequency change data is superimposed on a modulation wave of an FM broadcast station, a front ene circuit 1 of a receiver applies amplification and frequency conversion to a broadcast signal and the result is fed to a low frequency amplifier 6 and a separate data demodulating means 7 via an IF amplifier circuit 4 and an FM demodulation circuit 5. The means 7 demodulates separate data such as a frequency transfer signal, the data is subjected to waveform shaping 8, the data is decoded and processed for operation by a data decoding means 9 and a signal processing means 10 such as a microcomputer to generate frequency control data. The data is fed to a PLL frequency synthesizer 3 via a frequency control data transfer means 11. Then the oscillating frequency commanded by the separate data from the VCO2 is fed to the circuit 1 to select automatically the reception frequency.

Description

【発明の詳細な説明】産業−Ｉ−の利用分野本発明は、受信機の受信周波数を、放送局から送出する
特定のデータにより、自動的に他の放送局受信をさせる
受信機に関するものである。Detailed Description of the Invention Field of Application of Industry-I The present invention relates to a receiver that automatically adjusts the receiving frequency of the receiver to receive signals from other broadcasting stations using specific data sent from the broadcasting station. be.

従来例の構成とその問題点一般に■パＭ受信機においては、一度希望局を受信する
と、特に受信者が、選局指令を受信機に与える場合や、
プログラミング指令を与えていない場合は、受信周波数
が変って受信する事はない。Conventional configurations and their problems In general, in a PAM receiver, once a desired station is received, especially when the receiver gives a tuning command to the receiver,
If no programming command is given, the receiving frequency will not change and the signal will not be received.

このような従来の受信機の場合、情報送出者から受信周
波数をコントロールし、特定の又は異なった周波数の放
送局受信状態にする事はできない。In the case of such conventional receivers, it is not possible for the information sender to control the reception frequency and set the reception state to a broadcast station of a specific or different frequency.

このため例えば、車輌走行時における交通情報入手には
、受信者は、あらかじめ選局操作を行う必要があり、特
に走行時には、選局操作の見のがしや、操作時における
事故発生の可能性など、問題を有している。また緊急時
における情報伝達にあって、特定の放送局を受信させた
い場合にも、受信者に操作を行ってもらう等の理由によ
り、情報伝達率が低下するという問題を有している。For this reason, for example, in order to obtain traffic information while the vehicle is running, the recipient needs to perform a tuning operation in advance, which may cause problems, especially when driving, such as forgetting the tuning operation or the possibility of an accident occurring during operation. have. Furthermore, when transmitting information in an emergency, even when it is desired to receive a specific broadcasting station, there is a problem in that the information transmission rate decreases due to reasons such as requiring the receiver to perform operations.

発明の目的本発明は上記従来の欠点を解消するもので、簡単な構成
で安価に供給できるものでありながら、情報送出者から
受信周波数をコントロールする事ができる受信機を提供
することを目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a receiver that has a simple configuration and can be supplied at low cost, and that allows an information sender to control the receiving frequency. do.

発明の構成上記目的を達成するため、本発明の受信機は、ＦＭ放送
を受信して変調信号を復調するＦＭ復調手段と、ＦＭ放
送信号に重畳された別データ変調信壮を復調する別デー
タ復調手段と、復調された別データ信号を解読するデー
タ解読手段とを備え、解読された別データによって受信
周波数制御手段を制御し、別データにより指示された受
信周波数を自動的に選局する構成としたものである。Structure of the Invention In order to achieve the above object, the receiver of the present invention includes an FM demodulating means for receiving an FM broadcast and demodulating a modulated signal, and another data demodulating means for demodulating a modulated signal of another data superimposed on the FM broadcast signal. A configuration comprising a demodulating means and a data decoding means for decoding the demodulated separate data signal, controlling the receiving frequency control means by the decoded separate data, and automatically selecting a receiving frequency specified by the separate data. That is.

実施例の説明以下、本発明の一実施例について、図面に基づいて説明
する。図面は本発明の一実施例における受信機の回路ブ
ロック図で、（１）はＦＭ放送電波を増幅して周波数変
換するフロンｌ−エンド回路、（２）は周波数変換に必
要とする電圧制御発振器（以下ｒｖｃ○」と記す）、（
３）はＰＬＬ周波数シンセサイザ、（４）は中間周波増
幅回路、（５）はＦＭ復調回路、（６）は低周波増幅器
、（７）は別データ復調手段、（８）は復調データ信号
波形整形手段、（９）はデータ解読手段、（１０）は信
号処理手段、（１１）はＰＬＬ周波数シンセサイザ（３
）を制御する周波数コントロールデータ転送手段である
。ＶＣＯ（２）　とＰＬＬ周波数シンセサイザ（３）と
で選局用発振周波数を発生させており、データ解読手段
（９）と信号処理手段（１０）とは、本実施例ではマイ
クロコンビエータにより構成されており、データ演算処
理し、周波数コントロールデータ転送手段（１１）へ制
御データを転送する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The drawing is a circuit block diagram of a receiver according to an embodiment of the present invention, in which (1) shows a front L-end circuit that amplifies and frequency converts FM broadcast waves, and (2) shows a voltage controlled oscillator required for frequency conversion. (hereinafter referred to as “rvc○”), (
3) is a PLL frequency synthesizer, (4) is an intermediate frequency amplifier circuit, (5) is an FM demodulation circuit, (6) is a low frequency amplifier, (7) is a separate data demodulation means, and (8) is a demodulated data signal waveform shaping (9) is a data decoding means, (10) is a signal processing means, and (11) is a PLL frequency synthesizer (3).
) is a frequency control data transfer means that controls the The VCO (2) and PLL frequency synthesizer (3) generate the oscillation frequency for channel selection, and the data decoding means (9) and signal processing means (10) are constituted by a micro combinator in this embodiment. It performs data arithmetic processing and transfers the control data to the frequency control data transfer means (11).

いま、ＦＭ放送局の変調波に周波数変更データが重畳さ
れて送出された場合、放送信号は、フロントエンド回路
（１）で増幅及び周波数変換され、中間周波増幅回路（
４）及びＦＭ復調回路（５）を介して別データ復調手段
（７）で復調される。この場合の周波数は受信者の操作
によって決定されたものである。ＦＭ復調回路（５）で
復調された通常の放送信号は、次段の底周減増幅器（６
）を介して音声信号としてスピーカ（１２）に伝送され
る。重畳している周波数転移信号等の別データは、別デ
ータ復調手段（７）で復調された後、復調データ信号波
形整形手段（８）で波形整形された後、マイクロコン　
　　　　゛ピユータからなるデータ解読手段（９）及び
信号処理手段（１０）でデータ解読及び演算処理され、
周波数コントロールデータを発生させる。周波数コント
ロールデータ転送手段（１１）では、周波数コントロー
ルデータをＰ　Ｌ　Ｌ周波数シンセサイザ（３）に転送
し、ｖ　ｃ　Ｏ（２）の発振周波数は、重畳した別デー
タ信号の指示する周波数を受信するための周波数を発振
することになる。これにより、受信機は自動的に指示さ
れた放送局を受信し、スピーカ（１２）により音声出力
する事になる。Now, when frequency change data is superimposed on the modulated wave of an FM broadcasting station and sent out, the broadcast signal is amplified and frequency converted by the front end circuit (1), and then sent to the intermediate frequency amplification circuit (1).
4) and an FM demodulation circuit (5), and is demodulated by another data demodulation means (7). The frequency in this case is determined by the receiver's operation. The normal broadcast signal demodulated by the FM demodulation circuit (5) is sent to the bottom frequency reduction amplifier (6) at the next stage.
) is transmitted to the speaker (12) as an audio signal. Separate data such as the superimposed frequency transition signal is demodulated by the separate data demodulation means (7), then waveform-shaped by the demodulated data signal waveform shaping means (8), and then sent to the microcontroller.
The data is decoded and processed by a data decoding means (9) and a signal processing means (10) consisting of a computer,
Generate frequency control data. The frequency control data transfer means (11) transfers the frequency control data to the PLL frequency synthesizer (3), and the oscillation frequency of the vcO (2) is set to receive the frequency specified by the superimposed separate data signal. It will oscillate at a frequency of . As a result, the receiver automatically receives the designated broadcast station and outputs audio through the speaker (12).

このように、本実施例の構成において、従来の受信機と
比べて増加した個所は、別データ復調手段（７）から信
号処理手段（１０）までであり、その内、データ解読手
段（９）及び信号処理手段（１０）は、マイクロコンピ
ュータのプログラムソフトを作成すればよく、従来の受
信機に対して実質的なコストアップ要素は、別データ復
調手段（７）及び復調データ信号波形整形手段（８）だ
けであるので、ニス１〜的にも安価に供給できる。As described above, in the configuration of this embodiment, the parts that are increased compared to the conventional receiver are from the separate data demodulation means (7) to the signal processing means (10), of which the data decoding means (9) and the signal processing means (10), it is sufficient to create program software for a microcomputer, and the substantial cost increase factor compared to the conventional receiver is the separate data demodulating means (7) and the demodulated data signal waveform shaping means ( 8), the varnishes 1 to 1 can be supplied at low cost.

発明の効果以−］二説明したように本発明によれば、情報送出者か
ら容易に受信機の周波数を自動的にコン１−ロールする
事が出来るため、緊急情報伝達や交通情報伝達等の情報
伝達率を大幅に向上できる。また構成が簡単で安価に供
給できる。Effects of the Invention [2] As explained above, according to the present invention, the frequency of the receiver can be easily and automatically controlled by the information sender, which is useful for emergency information transmission, traffic information transmission, etc. Information transmission rate can be greatly improved. Furthermore, the structure is simple and can be supplied at low cost.

[Brief explanation of the drawing]

図面は本発明の一実施例における受信機の回路ブロック
図である。（１）・　フロントエンド回路、（２）・　ＶＣＯｌ（
３）・・・Ｐ　Ｌ　Ｌ周波数シンセサイザ、（４）・・
・中間周波増幅回路、（５）・・・ＦＭ復調回路、（６
）・・底周減増幅器、（７）・・・別データ復調手段、
（８）・・・復調データ信号波形整形手段、（９）・・
　データ解読手段、（１０）・・・信号処理手段、（１
１）・・・周波数コントロールデータ転送手段The drawing is a circuit block diagram of a receiver in one embodiment of the present invention. (1)・Front end circuit, (2)・VCOl(
3)...PLL frequency synthesizer, (4)...
・Intermediate frequency amplification circuit, (5)...FM demodulation circuit, (6
)...base frequency reduction amplifier, (7)...separate data demodulation means,
(8)... Demodulated data signal waveform shaping means, (9)...
Data decoding means, (10)...Signal processing means, (1
1) Frequency control data transfer means

Claims

[Claims]

1. FM demodulation means for receiving FM broadcasting and demodulating the modulated signal, separate data demodulation means for demodulating the separate data modulation signal superimposed on the FM broadcast signal, and data decoding means for decoding the demodulated separate data signal. A receiver configured to control a receiving frequency control means using the decoded separate data and automatically select a receiving frequency specified by the separate data.