JPH01125128A - Rds receiver - Google Patents
Rds receiverInfo
- Publication number
- JPH01125128A JPH01125128A JP28362087A JP28362087A JPH01125128A JP H01125128 A JPH01125128 A JP H01125128A JP 28362087 A JP28362087 A JP 28362087A JP 28362087 A JP28362087 A JP 28362087A JP H01125128 A JPH01125128 A JP H01125128A
- Authority
- JP
- Japan
- Prior art keywords
- broadcast
- electric field
- rds
- list
- received
- 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
- 230000005684 electric field Effects 0.000 claims abstract description 19
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は、選局情報や交通情報等のデジタル・データを
FMラジオ信号に多重する放送方式を採用したRDS放
送用の受信機に関する。更に詳しく説明すれば、RDS
データの代替周波数リストとプログラム識別コードを利
用した自動追従機能を有するRDS受信機に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a receiver for RDS broadcasting that employs a broadcasting method in which digital data such as channel selection information and traffic information is multiplexed onto an FM radio signal. To explain in more detail, RDS
The present invention relates to an RDS receiver having an automatic tracking function using an alternative frequency list of data and a program identification code.
(ロ)従来の技術
欧州のラジオ放送においては、多くの放送局がネットワ
ークを組んで同じ番組を放送することが多い。かづて、
このような数多くの放送局から電波の受信状況の良い局
を選択して受信したり、受信している放送局の電界強度
が下が゛つた場合に、他のもっと電波の強い局を捜し出
して受信することが困難であった。しかし、RDS放送
で送られてくるデータを利用すれば、これらを自動的に
容易に行なえるようになる。すなわち、受信電界強度が
ある一定水準以下になった場合、もつと電波の強い局を
自動的に選局する自動追従機能を有する受信システムが
可能になる。(b) Conventional technology In European radio broadcasting, many broadcasting stations often form a network and broadcast the same programs. Kazute,
From these many broadcasting stations, you can select and receive a station with good reception, or if the field strength of the broadcasting station you are receiving decreases, you can search for other stations with stronger reception. It was difficult to receive. However, if data sent through RDS broadcasting is used, these tasks can be easily performed automatically. That is, it becomes possible to create a receiving system that has an automatic tracking function that automatically selects a station with strong radio waves when the received electric field strength falls below a certain level.
RDSで送信されるデータには、プログラム識別コード
(PI)、代替局周波数コード(Ap)、放送局名コー
ド(PS)などさまざまなメツセージがある。代替周波
数リスト(以下、AFリスト)は同一番組を送信中の放
送局の周波数リストを最大25局まで送っている。これ
らPI信号とAF倍信号利用して、上記の自動追従機能
が可能になる。たとえば、ある放送を受信したら送信さ
れてくるAFリストとPIをメモリに格納する。現在、
受信している放送局の電界強度が予め設定した基準以下
になったら、先に記憶したAF侶号を読み出し周波数リ
ストにある他の放送局に切り替えて受信し、その電界強
度を調べて該電界強度が上記基準以上である放送局を選
ぶ。または、最初にAFリストの全放送局を受信して電
界強度を調べ、そのうち最も強い電界強度の放送局を選
局すればよい、AFリストに従って受信した番組が間違
いないかどうかは、新しく受信したPIと先に読み込ん
だPIとを比べて確認する。The data transmitted by RDS includes various messages such as a program identification code (PI), an alternative station frequency code (Ap), and a broadcasting station name code (PS). The alternative frequency list (hereinafter referred to as AF list) sends a frequency list of up to 25 broadcast stations that are transmitting the same program. By using these PI signals and AF multiplied signals, the above-mentioned automatic tracking function becomes possible. For example, when a certain broadcast is received, the AF list and PI that are sent are stored in the memory. the current,
When the electric field strength of the broadcasting station you are receiving falls below the preset standard, read out the previously memorized AF number, switch to another broadcasting station on the frequency list, check the electric field strength, and check the electric field. Select a broadcasting station whose intensity exceeds the above criteria. Alternatively, you can first receive all the broadcast stations on the AF list, check the field strength, and select the station with the strongest field strength.To check whether the program received according to the AF list is correct, check the field strength of the newly received program. Compare and confirm the PI with the PI loaded earlier.
(ハ)発明が解決しようとする問題点
しかし、受信電界強度が予め設定された基準以下になっ
たとき、自動追従機能が働いて先に記憶したAFリスト
に従って自動的に受信周波数を変更するが、記憶されて
いる全ての放送局の電界強度が上記基準以下である場合
は、従来の自動追従機能では感度良好なFM放送を受信
できない。(c) Problem to be solved by the invention However, when the received electric field strength falls below a preset standard, the automatic tracking function works and automatically changes the receiving frequency according to the previously stored AF list. If the electric field strengths of all stored broadcast stations are below the above-mentioned standard, the conventional automatic tracking function cannot receive FM broadcasts with good sensitivity.
(ニ)問題点を解決するための手段
上記の問題点は、FMラジオ信号に多重して送信された
RDSデータのうち代替周波数リストおよびプログラム
識別コードを記録する手段と、受信中の電波の電界強度
を判定する手段と、受信中のプログラム識別コードとメ
モリに格納された上記プログラム識別コードを比較する
手段と、代替周波数リストの中から適当な放送局が選択
できないときは他のRDS放送を選局する手段を少なく
とも有することを特徴とするRDS受信機により解決さ
れる。(d) Means for solving the problems The above problems are related to the means for recording the alternative frequency list and program identification code among the RDS data multiplexed with the FM radio signal and the electric field of the radio waves being received. means for determining the intensity, means for comparing the program identification code being received with the program identification code stored in memory, and selecting another RDS broadcast when an appropriate broadcasting station cannot be selected from the alternative frequency list. The present invention is solved by an RDS receiver characterized in that it has at least means for transmitting radio signals.
(ホ)作用
本発明によれば、受信電界強度が予め設定された基準以
下になると先に記憶したAFリストに従って自動的に受
信周波数を変更するが、上記AFリストに記憶されてい
る全ての放送局の電界強度が上記基準以下である場合に
は、自動的に他のRDS放送を受信する。(E) Effect According to the present invention, when the received electric field strength falls below a preset standard, the receiving frequency is automatically changed according to the previously stored AF list, but all broadcasts stored in the above AF list If the electric field strength of the station is below the above standard, other RDS broadcasts are automatically received.
(へ)実施例
本発明の一実施例の構成を第1図に示す。同図において
、1は高周波増幅回路、2は混合回路、3は中間周波数
増幅回路、4は検波回路、5は電圧制御発振器、6はプ
ログラマブルディバイダを含むPLL選局回路、7は受
信局の電界強度を調べ受信するに十分かを判断する電界
強度判定回路、8は受信したRDSデータを解読するR
DSデコーダ、9はデコードされたRDSデータのうち
PIを取り出すPI選択回路、10はPI選択回路で取
り出されたPIを記憶するPIメモリ、11はPIメモ
リに記憶されたPIと受信中のRDS放送のPIとの一
致・不一致を判断するPI判定回路、12はデコードさ
れたRDSデータのうちAFを取り出すAF選択回路、
13はAF選択回路で取り出されたAF倍信号記憶する
AFメモリ、14はAFメモリに記録されたAFリスト
から必要なAFを捜し出すAFサーチ回路、15は受信
周波数を自動的に変更し電界強度の強いところに同調状
態を固定するオートサーチ回路である。(F) Embodiment FIG. 1 shows the structure of an embodiment of the present invention. In the figure, 1 is a high frequency amplifier circuit, 2 is a mixing circuit, 3 is an intermediate frequency amplifier circuit, 4 is a detection circuit, 5 is a voltage controlled oscillator, 6 is a PLL channel selection circuit including a programmable divider, and 7 is the electric field of the receiving station. An electric field strength determination circuit that checks the strength and determines whether it is sufficient for reception; 8 is an R circuit that decodes the received RDS data;
DS decoder, 9 is a PI selection circuit that extracts PI from the decoded RDS data, 10 is a PI memory that stores the PI extracted by the PI selection circuit, and 11 is the PI stored in the PI memory and the RDS broadcast being received. 12 is an AF selection circuit that extracts the AF from the decoded RDS data;
13 is an AF memory that stores the AF multiplied signal extracted by the AF selection circuit; 14 is an AF search circuit that searches for the necessary AF from the AF list recorded in the AF memory; and 15 is a circuit that automatically changes the reception frequency and adjusts the field strength. This is an auto-search circuit that fixes the tuning state to the strong point.
次に実施例の動作を説明する。RDS放送を受信したら
RDSデータのデコードを行なう。デコードされたRD
SデータのうちAFリストおよびPIをそれぞれAFメ
モリ13、PIメモリ10に格納する。現在、受信して
いる放送局の電界強度の不足が電界強度判定回路8で検
出されると、AFサーチ回路14が作動してAFメモリ
13に格納されたAFリストに従って受信周波数を変更
し、新たに受信した放送局の電界強度を調べる。基準以
上の電界強度の放送局があれば、AFサーチ回路14が
停止し受信状態になる。AFリストの中に基準をみたす
電界強度の放送局がなければ、オートサーチ回路15が
作動する。オートサーチ動作で新たなRDS放送を受信
したら、PI判定動作に入る。斎しく受信されたPIと
PIメモリ10に格納されているPIを比較して両者の
一致・不一致がPI判定回路11で判断される。一致し
た場合は再度オートサーチ動作が開始され、不一致の場
合はオートサーチ動作は停止する。この動作例のフロー
チャートを第2図に示す。Next, the operation of the embodiment will be explained. When RDS broadcasting is received, the RDS data is decoded. decoded RD
Of the S data, the AF list and PI are stored in the AF memory 13 and the PI memory 10, respectively. When the field strength determination circuit 8 detects that the field strength of the broadcasting station currently being received is insufficient, the AF search circuit 14 operates to change the reception frequency according to the AF list stored in the AF memory 13, and Check the electric field strength of the broadcast station received. If there is a broadcasting station with an electric field strength above the standard, the AF search circuit 14 is stopped and the station enters the receiving state. If there is no broadcasting station with a field strength that meets the criteria in the AF list, the auto search circuit 15 is activated. When a new RDS broadcast is received during the auto search operation, the PI determination operation begins. The recently received PI is compared with the PI stored in the PI memory 10, and a PI determination circuit 11 determines whether they match or do not match. If they match, the auto search operation will start again; if they do not match, the auto search operation will stop. A flowchart of this example of operation is shown in FIG.
なお、上記の実施例には記してないが、オートサーチ動
作において新たにRDS放送を受信する際にM/S(音
楽か会話かの識別コード)やTP(交通情報放送局の識
別信号)などのデータを判別して選択的に受信する手段
を設ければ、以前に受信していた番組に近いジャンルの
番組、たとえば音楽番組なら音楽番組を続けて受信する
ことが可能になる。Although not mentioned in the above embodiment, when receiving a new RDS broadcast in the auto search operation, M/S (music or conversation identification code), TP (traffic information broadcasting station identification signal), etc. If a means for discriminating and selectively receiving data is provided, it becomes possible to continuously receive a program of a genre similar to the previously received program, for example, a music program if it is a music program.
(ト)発明の効果
代替周波数リストの中に基準をみたす電界強度の放送局
がない場合は自動的にオートサーチ動作に移行するので
、常に感度良好なFM放送を提供することが可能になる
。さらにオートサーチ動作において番組を選択的に受信
する機能を有しているときは、常にジャンルの似た番組
−を提供することが可能になる。(G) Effects of the Invention If there is no broadcasting station with a field strength that meets the standard in the alternative frequency list, the automatic search operation is automatically performed, making it possible to always provide FM broadcasting with good sensitivity. Furthermore, when the automatic search operation has a function of selectively receiving programs, it is possible to always provide programs of similar genres.
第1図は、本発明の一実施例のブロック図、第2図は、
実施例の動作を示すフローチャートである。
7・・・電界強度判定回路、 8・・・RDSデコーダ
、 9・・・PI選択回路、 10・・・PIメモ
リ、11・・・PI判定回路、 12・・・AF選択
回路、13・・・AFメモリ、 14・・・AFサー
チ回路、15・・・オートサーチ回路。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
3 is a flowchart showing the operation of the embodiment. 7... Electric field strength judgment circuit, 8... RDS decoder, 9... PI selection circuit, 10... PI memory, 11... PI judgment circuit, 12... AF selection circuit, 13...・AF memory, 14...AF search circuit, 15...auto search circuit.
Claims (1)
ち代替周波数リストおよびプログラム識別コードを記録
する手段と、受信中の電波の電界強度を判定する手段と
、受信中のプログラム識別コードとメモリに格納された
上記プログラム識別コードを比較する手段と、記録され
た代替周波数リストの中から適当な放送局が選択できな
いときは他のRDS放送を選局する手段を少なくとも有
することを特徴とするRDS受信機。A means for recording an alternative frequency list and a program identification code among the RDS data multiplexed with the FM radio signal and transmitted, a means for determining the electric field strength of the radio wave being received, and a program identification code being received and stored in the memory. An RDS receiver comprising at least means for comparing the program identification codes that have been recorded, and means for selecting another RDS broadcast when an appropriate broadcasting station cannot be selected from the recorded alternative frequency list. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62283620A JP2627284B2 (en) | 1987-11-10 | 1987-11-10 | RDS receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62283620A JP2627284B2 (en) | 1987-11-10 | 1987-11-10 | RDS receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01125128A true JPH01125128A (en) | 1989-05-17 |
JP2627284B2 JP2627284B2 (en) | 1997-07-02 |
Family
ID=17667868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62283620A Expired - Lifetime JP2627284B2 (en) | 1987-11-10 | 1987-11-10 | RDS receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2627284B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03284022A (en) * | 1990-03-30 | 1991-12-13 | Pioneer Electron Corp | Reception frequency selecting method for rds receiver |
JPH03293820A (en) * | 1990-04-10 | 1991-12-25 | Pioneer Electron Corp | Channel selecting method for rds preset receiver |
JPH0565061U (en) * | 1992-02-07 | 1993-08-27 | 富士電気化学株式会社 | Transport tool for cylindrical lithium batteries |
JPH08251052A (en) * | 1995-12-21 | 1996-09-27 | Pioneer Electron Corp | Channel selection method for preset station of network follow system |
JP2002215669A (en) * | 2001-09-14 | 2002-08-02 | Hitachi Ltd | Information service system and broadcast receiving system |
JP2003304460A (en) * | 2003-02-24 | 2003-10-24 | Hitachi Ltd | Information service system and broadcast reception system |
GB2475580A (en) * | 2009-11-24 | 2011-05-25 | Grandex Internat Corp | Automatic FM wireless link replacement |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6052739U (en) * | 1983-09-16 | 1985-04-13 | パイオニア株式会社 | Receiving machine |
JPS6455916A (en) * | 1987-08-27 | 1989-03-02 | Pioneer Electronic Corp | Control method for rds receiver |
-
1987
- 1987-11-10 JP JP62283620A patent/JP2627284B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6052739U (en) * | 1983-09-16 | 1985-04-13 | パイオニア株式会社 | Receiving machine |
JPS6455916A (en) * | 1987-08-27 | 1989-03-02 | Pioneer Electronic Corp | Control method for rds receiver |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03284022A (en) * | 1990-03-30 | 1991-12-13 | Pioneer Electron Corp | Reception frequency selecting method for rds receiver |
JPH03293820A (en) * | 1990-04-10 | 1991-12-25 | Pioneer Electron Corp | Channel selecting method for rds preset receiver |
JPH0565061U (en) * | 1992-02-07 | 1993-08-27 | 富士電気化学株式会社 | Transport tool for cylindrical lithium batteries |
JPH08251052A (en) * | 1995-12-21 | 1996-09-27 | Pioneer Electron Corp | Channel selection method for preset station of network follow system |
JP2002215669A (en) * | 2001-09-14 | 2002-08-02 | Hitachi Ltd | Information service system and broadcast receiving system |
JP2003304460A (en) * | 2003-02-24 | 2003-10-24 | Hitachi Ltd | Information service system and broadcast reception system |
GB2475580A (en) * | 2009-11-24 | 2011-05-25 | Grandex Internat Corp | Automatic FM wireless link replacement |
GB2475580B (en) * | 2009-11-24 | 2012-03-07 | Grandex Internat Corp | Apparatus and method for automatic wireless link replacement |
Also Published As
Publication number | Publication date |
---|---|
JP2627284B2 (en) | 1997-07-02 |
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