JPS5989027A - Electronic tuning radio receiver - Google Patents

Electronic tuning radio receiver

Info

Publication number
JPS5989027A
JPS5989027A JP19838482A JP19838482A JPS5989027A JP S5989027 A JPS5989027 A JP S5989027A JP 19838482 A JP19838482 A JP 19838482A JP 19838482 A JP19838482 A JP 19838482A JP S5989027 A JPS5989027 A JP S5989027A
Authority
JP
Japan
Prior art keywords
memory
band
frequency
switch
radio receiver
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
Application number
JP19838482A
Other languages
Japanese (ja)
Inventor
Kazuyuki Norita
法田 和行
Tatsuo Ito
辰男 伊藤
Takeshi Torii
鳥居 毅嗣
Yoshiro Okamoto
岡本 芳郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Ten Ltd
Toyota Motor Corp
Original Assignee
Denso Ten Ltd
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Ten Ltd, Toyota Motor Corp filed Critical Denso Ten Ltd
Priority to JP19838482A priority Critical patent/JPS5989027A/en
Publication of JPS5989027A publication Critical patent/JPS5989027A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To attain an automatic switch between AM and FM bands by providing channel selection switches for AM and FM station independently of each other. CONSTITUTION:Either one of switches AM1-AM5 and FM1-FM5 is turned on for channel selection. Then the prescribed numerical value is read out of a memory 5 and applied to a PLL2. In this case, a flip-flop 4 is set to designate a band with the rise of the output of an OR gate G1 or G2. Then a turner 1 is ready for reception of AM or FM. A sweep is carried out when the frequency of a station is not clear. In such a case, a switch AMSCAN or FMSCAN is operated. Thus a frequency sweep is automatically carried out at the AM or FM band.

Description

【発明の詳細な説明】 本発明は、AM/、FMのバンド切替操作をすることな
くプリセット選局を可能とする電子同量ラジオ受信機に
関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic equivalent radio receiver that enables preset tuning without performing an AM/FM band switching operation.

RAM (ランダムアクセスメモ1月を用いたプリセッ
トメモリに予め複数の放送周波数情報、例えばPLLシ
ンセサイザ方式であればチューナ部の受信周波数を決め
るPLL (フェイス口・ツクドループ)の分周比Nを
記憶させておき、その1つをチャンネル選択スイッチで
読出ずことにより、ワンタッチで所望とする放送周波数
を受信するラジオ受信機はプリセット選局型と呼ばれる
。このラジオ受信機がAMおよびFMの2ハンドを受信
する機能を備えている場合、従来はチャンネル選択スイ
ッチの他にハンド指定のスイ・ノチ媒作も必要となる。
RAM (Random Access Memo) Store multiple broadcast frequency information in advance in a preset memory, for example, in the case of a PLL synthesizer system, the frequency division ratio N of the PLL (face-opening/tsukudoroop) that determines the reception frequency of the tuner section. A radio receiver that receives the desired broadcast frequency with a single touch is called a preset tuning type.This radio receiver receives two hands, AM and FM. If the device is equipped with this function, conventionally, in addition to the channel selection switch, a hand-specified sui-nochi intermediary is also required.

つまりチャンネル選択スイ・ノチが単にヂャンネル番号
1,2,3.・・・・・・を示ず釦であり、またバンド
指定スイッチがAM/FMの切替スイッチであるとすれ
ば、例えばAMの受信状態からFMの第2チヤンネルを
受信する場合には、先ずハンド指定スイッチをAMに切
替えると共に、チャンネル選択スイッチの2を押す必要
がある。同じバンド内であれば単にチャンネル選択スイ
ッチを押すだけで選局できるが、異なるバンドへ移る場
合には上述したように2回のスイッチ操作が必要である
In other words, the channel selection switch is simply channel numbers 1, 2, 3, etc. If the band selection switch is an AM/FM changeover switch, for example, when receiving the second channel of FM from the AM reception state, first the hand It is necessary to switch the designated switch to AM and press the channel selection switch 2. If you are in the same band, you can select a channel by simply pressing the channel selection switch, but if you want to change to a different band, you will need to operate the switch twice as described above.

本発明は、電子同調ラジオ受信機にAM、FM専用のチ
ャンネル選択スイッチを設けることでバンド切替のスイ
ッチ操作を不要とするものである。
The present invention eliminates the need for a band switching switch operation by providing an electronically tuned radio receiver with a channel selection switch dedicated to AM and FM.

本発明は、AMおよびFMバンノド放送周波数を受信可
能なチューナ部を有する電子同調ラジオ受信機において
、該チューナ部で受信する複数の放送周波数情報を記憶
可能なプリセットメモリと、該メモリの記憶領域を指定
する複数のAM用のチャンネルスイッチおよびFM用チ
ャンネルスイッチと、該メモリから読出された放送周波
数情報に基づき該チューナ部の受信周波数を設定する回
路と、該AM用のチャンネルスイッチのいずれかが押さ
れたときに該チューナ部にAMのバンド情報を与え、ま
た該FM用のチャンネルスイッチのいずれかが押された
ときに該チューナ部にFMのバンド情報を与える回路と
を備えてなることを特徴とするが、以下図示の実施例を
参照しながらこれを詳細に説明する。
The present invention provides an electronically tuned radio receiver having a tuner unit capable of receiving AM and FM broadcast frequencies, including a preset memory capable of storing information on a plurality of broadcast frequencies received by the tuner unit, and a storage area of the memory. A plurality of specified AM channel switches and FM channel switches, a circuit for setting the reception frequency of the tuner section based on the broadcast frequency information read from the memory, and one of the AM channel switches are pressed. a circuit that provides AM band information to the tuner section when the tuner is pressed, and a circuit that provides FM band information to the tuner section when any of the FM channel switches is pressed. However, this will be explained in detail below with reference to the illustrated embodiment.

図面は本発明の一実施例を示すブロック図で、lはAM
およびFMの2バンドで受信可能なチューナである。2
ばこのチューナ1の受信周波数を決定するF’LLであ
る。チューナ1の受信周波数は、jL L 2からの誤
差電圧をローパスフィルタ3を通して図示せぬ同調回路
のバリキャップにヂューニング電圧TBとして与えるこ
とにより変化する。誤差電圧はチューナ1の局発信号f
LOをパルス制御回路4でパルスに変換し、これをN・
fr(Nば分周比、frば基準周波数)と位相比較した
結果得られるもので、この誤差電圧が零となるまで粍。
The drawing is a block diagram showing one embodiment of the present invention, l is AM
This is a tuner that can receive data in two bands: FM and FM. 2
This is F'LL which determines the reception frequency of the cigarette tuner 1. The reception frequency of the tuner 1 is changed by applying the error voltage from jL L 2 through a low-pass filter 3 to a varicap of a tuning circuit (not shown) as a tuning voltage TB. The error voltage is the local oscillation signal f of tuner 1.
The LO is converted into a pulse by the pulse control circuit 4, and this is converted into a pulse by the pulse control circuit 4.
It is obtained as a result of phase comparison with fr (N: frequency division ratio, fr: reference frequency), and is continued until this error voltage becomes zero.

を変化させたときに分周比Nによる放送周波数の受信状
態となる。5はPLL2にN値を与えるプリセットメモ
リ (RAM)であり、本例ではAM5局、FM5局の
記憶領域がある。N値は直接PLL2内の分周器に与え
られるのではなく、同じ<PLLZ内にあるプログラマ
ブルなアンプダウンカウンタを通して与えられる。そし
て、このアップダウンカウンタはプリセ・ノド時にフリ
・ノブフロップ6からの信号up/downを受けてア
・ノブ。
When the frequency is changed, the reception state of the broadcast frequency based on the frequency division ratio N is reached. 5 is a preset memory (RAM) that provides the N value to PLL 2, and in this example, it has storage areas for 5 AM stations and 5 FM stations. The N value is not provided directly to the frequency divider in PLL2, but through a programmable amplifier down counter located in the same <PLLZ. Then, this up/down counter receives the signal up/down from the free knob flop 6 at the time of pre-knob.

カウントもしくはダウンカランl−する。Count or down.

つまりフリップフロ・ノブ60入力にはオートのサーチ
アップおよびサーチダウンのスイ・ンチASU、ASD
・やマニュアルの9・−チア・ノブおよびサーチダウン
のスイッチMSU、MSDの他に、スキャン掃引用のス
イッチAM  5CAN、FMSCANがある。プリセ
ットメモリ5に所望とするN値を記憶する場合にはこれ
らのスイッチを適宜使用してPLL2内のN値を変更し
、所望とする放送周波数が受信されたら記憶指示スイ・
ングーMEMOを押してフリップフロップの出力をH(
/\イ)にし、メモリ5を書込み可能な状態にする。
In other words, the flip-flow knob 60 input has auto search up and search down switches ASU and ASD.
9. In addition to the chia knob and search down switches MSU and MSD, there are also scan sweep switches AM 5CAN and FMSCAN. When storing a desired N value in the preset memory 5, use these switches as appropriate to change the N value in the PLL 2, and when the desired broadcast frequency is received, press the storage instruction switch.
Press Ngu MEMO to set the flip-flop output to H(
/\a) to make the memory 5 writable.

そして、AMバンノドあればAM専用のチルヤンネルス
イッチAM1〜AM5のいずれかを押すことで、対応す
る領域にそのときのN値が記憶される。
Then, if there is an AM value, by pressing any of the AM dedicated chill channel switches AM1 to AM5, the N value at that time is stored in the corresponding area.

FMについても同様で、FMI〜FM’5はFM専用の
チャンネルスイ・7チである。8はこれらのチャンネル
スイッチの出力を保持するフリ、2プフロツプである。
The same applies to FM, and FMI to FM'5 are channel switches 7 exclusively for FM. 8 is a 2-flop flop that holds the outputs of these channel switches.

メモリ5からの読出し時にはスイ・ノチAMI〜AM5
.FMI〜FM5のいずれかをオンにする。
When reading from memory 5, Sui Nochi AMI to AM5
.. Turn on any of FMI to FM5.

例えばAMIをオンにするとメモリ5の対応する領域か
らN値がPLL2に供給される。このときAM 1−A
M 5の全出力の論理和をとるオアゲートG+の出力が
L(ロー)からI−1に立」二るので、微分回路9に出
力が生し、フリップフロップ10がセットされる。この
フリップフロップ10はバンド指定用で、これがセ・ノ
ドされたときにチューナ1にAMのバンド情報が与えら
れる(その様に設定しておく)。これによりチューナl
の受信ノ(ノドはAMになり、且つメモリ5からのN値
に応じて、予めスイッチAMIでプリセ・ノドしておい
たAMの放送周波数が受信される。次にスイ・ンチFM
Iをオンにしたとするとメモリ5の対応する領域からN
値がPLL2に供給され、同時にFM1〜FM5の全出
力の論理和をとるオアゲートG2の出力がLから11に
立上り、微分回路11に出力が生じてフリップフロ・ノ
ブ10がリセ・ノドされる。これによりチューナ1の受
信バンドはFMに切替わり、そしてスイッチFMIに対
応してメモI75から読出されたN値に応じたFMの放
送周波数が受信される。
For example, when the AMI is turned on, the N value is supplied from the corresponding area of the memory 5 to the PLL 2. At this time AM 1-A
Since the output of the OR gate G+ which takes the logical sum of all the outputs of M5 goes from L (low) to I-1, an output is generated in the differentiating circuit 9 and the flip-flop 10 is set. This flip-flop 10 is used for specifying a band, and when this flip-flop 10 is set, AM band information is given to the tuner 1 (it is set as such). This allows the tuner
The reception signal becomes AM, and according to the N value from the memory 5, the AM broadcasting frequency preset by the switch AMI is received.Next, the switch FM
If I is turned on, N from the corresponding area of memory 5
The value is supplied to the PLL 2, and at the same time, the output of the OR gate G2 which takes the logical sum of all outputs of FM1 to FM5 rises from L to 11, an output is generated in the differentiating circuit 11, and the flip-flow knob 10 is reset. As a result, the reception band of the tuner 1 is switched to FM, and the FM broadcast frequency corresponding to the N value read from the memo I75 is received in response to the switch FMI.

ゲー1−CIにはフリップフロップ6からのAMSCA
Nが、またゲートG2にばFM  5CANが入力され
ている。スキャン掃引とは一時ボールド自動選局等とも
呼ばれるモードで、スイッチAM (FM)SCANを
押すとAM (FM)バンドの下限から順次周波数掃引
が行なわれ、放送周波数が検出されたらそこでT秒間停
止し、再び掃引を開始するモードである。これをプリセ
ット時に使用すると都合が良いので、そのスイッチ操作
によっても自動的にバンド切替えが行なわれる様にしで
ある。尚、12ばN値の下限M i Nおよび」二限M
AXを指示するメモリ (ROM)である。
AMSCA from flip-flop 6 for game 1-CI
N and FM 5CAN are input to the gate G2. Scan sweep is a mode also called temporary bold automatic tuning, etc. When the switch AM (FM) SCAN is pressed, the frequency sweep is performed sequentially from the lower limit of the AM (FM) band, and when the broadcast frequency is detected, it stops there for T seconds. , is the mode to start sweeping again. Since it is convenient to use this at the time of presetting, band switching is also performed automatically when the switch is operated. In addition, in 12, the lower limit M i N of the N value and the ``2 limit M
This is a memory (ROM) that specifies AX.

また、スイッチAM/FMは別のモードでAM。Also, the switch AM/FM is AM in another mode.

FMのバンドを手動設定する場合に用いる。Used when manually setting the FM band.

以上述べたように本発明によれば、チャンネル選択スイ
ッチをAM、F’M専用に設け、且つバンド切替えが自
動的に行なわれる回路を設けたので、異なるバンドへ移
る選局操作でもワンタンチで行うことができる利点があ
る。
As described above, according to the present invention, a channel selection switch is provided exclusively for AM and F'M, and a circuit for automatic band switching is provided, so that switching to a different band can be performed in one click. There is an advantage that it can be done.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示すブロック図である。 図中、1はチューナ、2はP L L、5はプリセット
メモリ、9.11は微分回路、10はバンド指定フリッ
プフロップ、AMI〜AM5はAM専用のチャンネルス
イッチ、FMI〜FM5はFM専用のチャンネルスイッ
チ、G1.G2はオアゲートである。
The drawing is a block diagram showing one embodiment of the present invention. In the figure, 1 is a tuner, 2 is a PLL, 5 is a preset memory, 9.11 is a differential circuit, 10 is a band specification flip-flop, AMI to AM5 are AM channel switches, and FMI to FM5 are FM channels. Switch, G1. G2 is an or gate.

Claims (1)

【特許請求の範囲】[Claims] AMおよびFMバンドの放送周波数を受信可能なチュー
ナ部を有する電子同調ラジオ受信機において、該チュー
ナ部で受信する複数の放送周波数情報を記憶可能なプリ
セットメモリと、該メモリの記憶領域を指定する複数の
AM用のチャンネルスイッチおよびFM用チャンネルス
イッチと、該メモリから読出された放送周波数情報に基
づき該チューナ部の受信周波数を設定する回路と、該A
M用のチャンネルスイッチのいずれかが押されたときに
該チューナ部にAMのバンド情報を与え、また該FM用
のチャンネルスイッチのいずれかが押されたときに該チ
ューナ部にFMのハンド情報を与える回路とを備えてな
ることを特徴とする電子同調ラジオ受信機。
An electronically tuned radio receiver having a tuner section capable of receiving broadcast frequencies in the AM and FM bands includes a preset memory capable of storing information on a plurality of broadcast frequencies received by the tuner section, and a plurality of preset memories for specifying storage areas of the memory. an AM channel switch and an FM channel switch; a circuit for setting a reception frequency of the tuner section based on broadcast frequency information read from the memory;
When any channel switch for M is pressed, AM band information is given to the tuner section, and when any channel switch for FM is pressed, FM hand information is given to the tuner section. An electronically tuned radio receiver comprising: a circuit for providing.
JP19838482A 1982-11-12 1982-11-12 Electronic tuning radio receiver Pending JPS5989027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19838482A JPS5989027A (en) 1982-11-12 1982-11-12 Electronic tuning radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19838482A JPS5989027A (en) 1982-11-12 1982-11-12 Electronic tuning radio receiver

Publications (1)

Publication Number Publication Date
JPS5989027A true JPS5989027A (en) 1984-05-23

Family

ID=16390224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19838482A Pending JPS5989027A (en) 1982-11-12 1982-11-12 Electronic tuning radio receiver

Country Status (1)

Country Link
JP (1) JPS5989027A (en)

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