JPS60212022A - Tuner - Google Patents

Tuner

Info

Publication number
JPS60212022A
JPS60212022A JP6843584A JP6843584A JPS60212022A JP S60212022 A JPS60212022 A JP S60212022A JP 6843584 A JP6843584 A JP 6843584A JP 6843584 A JP6843584 A JP 6843584A JP S60212022 A JPS60212022 A JP S60212022A
Authority
JP
Japan
Prior art keywords
section
tuner
radio
frequency synthesizer
television
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
JP6843584A
Other languages
Japanese (ja)
Inventor
Osamu Tsukamoto
修 塚本
Katsumi Yamamoto
勝美 山本
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6843584A priority Critical patent/JPS60212022A/en
Publication of JPS60212022A publication Critical patent/JPS60212022A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous 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
    • H03J5/02—Discontinuous 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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To realize a function of simultaneous reception of a television broadcast and a radio broadcast by providing a voltage control section varying an output voltage with a variable resistor in addition to a PLL frequency synthesizer section. CONSTITUTION:When a switch 6 is changed over to the position of a terminal 12, a radio tuner section 1 or a television tuner section 2 of a selected reception band by a reception band selector act singly as a PLL frequency synthesizer tuner the same operation as the monolithic tuner of a conventional television tuner/ radio tuner. In changing over the switch 6 to the position of a terminal 13, the television tuner section 2 is disconnected from the PLL frequency synthesizer section 3 and connected to the voltage control section 4. Then only the radio tuner section 1 is connected to the PLL frequency synthesizer section 3 and since the radio tuner section 1 is tuned by the PLL frequency synthesizer section 3 and the television tuner section 2 is tuned by a variable resistor 5 of the voltage control section 4, the television broadcast and the radio broadcast are received at the same time.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、テレビおよびラジオ放送を受信するチューナ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tuner for receiving television and radio broadcasts.

従来例の構成とその問題点 近年、テレビおよびラジオ放送両方が受信できるチュー
ナが増えており、その方式もＰＬＬ周波数シンセサイザ
でプリセットチャンネル式のものが多くなっている。こ
の方式のものは受信バンドおよび受信周波数の選択が簡
単に行なえ、便利なものである。Conventional configurations and their problems In recent years, the number of tuners that can receive both television and radio broadcasts has increased, and the number of tuners that can receive both television and radio broadcasts is increasing, and many of them are of the PLL frequency synthesizer and preset channel type. This system is convenient because the reception band and reception frequency can be easily selected.

このテレビチューナ・ラジオチューナ一体型のチューナ
は、増幅器やタイマーとの結線が、テレビチューナとラ
ジオチューナとが別々のものに較べてきわめて簡単であ
るという利点があるが、反面、テレビ放送を視ながらラ
ジオ放送を聴くという同時受信はできなかった。しかし
ながら、実際の使用状況では、テレビで野球中継を視て
いる間にラジオで聴きたい放送があって、テレビの画面
で野球中継を視ながら同時にラジオ放送を聴くというよ
うに、テレビ放送とラジオ放送との同時受信が必要にな
る場合が多く、テレビ放送とラジオ放送の同時受信がで
きないことはテレビチューナ・ラジオチューナ一体型の
チューナの有する大きな問題点であった。This integrated TV tuner/radio tuner has the advantage that it is much easier to connect to the amplifier and timer than a TV tuner and radio tuner that are separate. Simultaneous reception of listening to radio broadcasts was not possible. However, in actual usage situations, there is a broadcast that you want to listen to on the radio while watching a baseball broadcast on TV, and you listen to the radio broadcast at the same time while watching the baseball broadcast on the TV screen. In many cases, it is necessary to simultaneously receive television broadcasts and radio broadcasts, and the inability to receive television broadcasts and radio broadcasts simultaneously has been a major problem with tuners that combine a television tuner and a radio tuner.

発明の目的 本発明は上記従来の欠点を解消するもので、テレビ放送
を視ながらラジオ放送を聴くことのできるテレビチュー
ナ・ラジオチューナ一体型のチューナを提供することを
目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and an object thereof is to provide an integrated TV tuner/radio tuner that allows listening to radio broadcasts while watching television broadcasts.

発明の構成 上記目的を達成覆るため、本発明のチューナは、テレビ
チューナ部と、ラジオチューナ部と、ＰＬＬ周波数シン
セサイザ部と、可変抵抗器により同調用出力電圧を可変
できる電圧コントロール部と、前記テレビチューナ部ま
たはラジオチューナ部の同調電圧入力端子を前記ＰＬＬ
周波数シンセサイザ部の同調電圧出力端子と前記電圧コ
ントロール部の同調電圧出力端子とに選択的に切換接続
するスイッチとを備えた構成としたものである。Structure of the Invention In order to achieve the above objects, the tuner of the present invention includes a television tuner section, a radio tuner section, a PLL frequency synthesizer section, a voltage control section that can vary the output voltage for tuning using a variable resistor, and The tuning voltage input terminal of the tuner section or radio tuner section is connected to the PLL.
The configuration includes a switch selectively connected to the tuning voltage output terminal of the frequency synthesizer section and the tuning voltage output terminal of the voltage control section.

かかる構成によれば、スイッチによりテレビチューナ部
またはラジオチューナ部の周波数同調回路がＰＬＬ周波
数シンセサイザ部から切り離されて電圧コントロール部
に接続され、テレビチューナ部またはラジオチューナ部
のうち一方の同調は電圧コントロール部の可変抵抗器に
より、ま／Ｃ他方のチューナ部の同調はＰＬＬ周波数シ
ンセサイザ部によりそれぞれ行なうことができ、テレビ
放。According to this configuration, the frequency tuning circuit of the TV tuner section or the radio tuner section is separated from the PLL frequency synthesizer section and connected to the voltage control section by the switch, and the tuning of either the TV tuner section or the radio tuner section is performed by voltage control. Tuning of the other tuner section can be performed by a PLL frequency synthesizer section using a variable resistor in one section, and the other tuner section can be tuned by a PLL frequency synthesizer section.

送を視ながらラジオ放送を聴くという同時受信を　・実
現できる。・It is possible to simultaneously receive radio broadcasts while watching radio broadcasts.

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。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

図面は本発明の一実施例におけるチューナの回路ブロッ
ク図で、１はラジオチューナ部、２はテレビチューナ部
、３はＰＬＬ周波数シンセサイザ部、４は電圧コントロ
ール部、５は電圧コントロール部４の電圧を調節する可
変抵抗器、６はスイッチ、７はＰＬＬ周波数シンセサイ
ザ部３の同調電圧出力端子、８はラジオチューナ部１の
同調電圧入力端子、９はテレビチューナ部２の同調電圧
入力端子、１０は電圧コントロール部４の同調電圧比り
端子、１１はスイッチ６の共通端子で、この共通端子１
１は切換操作により端子１２または端子１３に選択的に
接続される。The figure is a circuit block diagram of a tuner according to an embodiment of the present invention, in which 1 is a radio tuner section, 2 is a television tuner section, 3 is a PLL frequency synthesizer section, 4 is a voltage control section, and 5 is a circuit for controlling the voltage of the voltage control section 4. A variable resistor for adjustment, 6 a switch, 7 a tuning voltage output terminal of the PLL frequency synthesizer section 3, 8 a tuning voltage input terminal of the radio tuner section 1, 9 a tuning voltage input terminal of the TV tuner section 2, 10 a voltage The tuning voltage ratio terminal 11 of the control section 4 is a common terminal of the switch 6, and this common terminal 1
1 is selectively connected to terminal 12 or terminal 13 by a switching operation.

以上のように構成された本実施例のチューナについて、
以下その動作を説明する。まずスイッチ６が端子１２側
に切換えられているｖＩは、従来のテレビチューナ・ラ
ジオチューナ一体型のチューナと同じ動作で、受信バン
ドセレクター（図示せず）により選択された受信バンド
のラジオチューナ部１またはテレビチューナ部２がそれ
ぞれ単独でＰＬＬ周波数シンセサイザチューナとして動
作する。Regarding the tuner of this embodiment configured as described above,
The operation will be explained below. First, vI, in which the switch 6 is switched to the terminal 12 side, operates in the same manner as a conventional TV tuner/radio tuner integrated tuner, and the radio tuner part 1 of the reception band selected by the reception band selector (not shown) Alternatively, each of the television tuner sections 2 independently operates as a PLL frequency synthesizer tuner.

次にスイッチ６を端子１３側に切換えると、テレビチュ
ーナ部２はＰＬＬ周波数シンセサイザ部３と切り離され
、電圧コントロール部４と接続される。モしてＰＬＬ周
波数シンセサイザ部ｊにはラジオチューナ部１のみが接
続される。かくして、ラジオチューナ部１の同調はＰＬ
Ｌ周波数シンセサイザ部３で、またテレビチューナ部２
の同調は電圧コントロール部４の可変抵抗器５で行なえ
るので、これによりテレビ放送とラジオ放送との同時受
信ができる。Next, when the switch 6 is switched to the terminal 13 side, the television tuner section 2 is disconnected from the PLL frequency synthesizer section 3 and connected to the voltage control section 4. Furthermore, only the radio tuner section 1 is connected to the PLL frequency synthesizer section j. Thus, the tuning of radio tuner section 1 is PL
L frequency synthesizer section 3, and TV tuner section 2
can be tuned by the variable resistor 5 of the voltage control section 4, thereby allowing simultaneous reception of television broadcasts and radio broadcasts.

このように本実施例によれば、ＰＬＬ周波数シンセサイ
ザ部３と共に可変抵抗器５により出力電圧を変えられる
電圧コントロール部４を設け、ス、イツチ６によりテレ
ビチューナ部２をどちらにでも接続できるようにしたの
で、テレビ放送とラジオ放送との同時受信ができるテレ
ビチューナ・ラジオチューナ一体型のチューナが実現で
きる。・なお、上記実施例では、テレビチューナ部２を
スイッチ６の切換えでＰＬＬ周波数シンセサイザ部３又
は電圧コントロール部４で同調させ、かつラジオチュー
ナ部１をＰＬＬ周波数シンセサイザ部のみで同調させて
いるが、テレビチューナ部２をＰＬＬ周波数シンセサイ
ザ部３のみで同調させ、かつラジオチューナ部１をスイ
ッチ６の切換えでＰＬＬ周波数シンセサイザ部３又は電
圧コントロール部４で同調させるように接続してもよい
。As described above, according to this embodiment, the voltage control section 4 which can change the output voltage by the variable resistor 5 is provided together with the PLL frequency synthesizer section 3, and the TV tuner section 2 can be connected to either one by the switch 6. Therefore, it is possible to realize an integrated TV tuner/radio tuner that can receive TV broadcasts and radio broadcasts simultaneously. - In the above embodiment, the television tuner section 2 is tuned by the PLL frequency synthesizer section 3 or the voltage control section 4 by switching the switch 6, and the radio tuner section 1 is tuned only by the PLL frequency synthesizer section. The television tuner section 2 may be tuned only by the PLL frequency synthesizer section 3, and the radio tuner section 1 may be connected so as to be tuned by the PLL frequency synthesizer section 3 or the voltage control section 4 by switching the switch 6.

発明の詳細 な説明したように本発明によれば、ＰＬＬ周波数シンセ
サイザ部の他に可変抵抗器により出力電圧を可変できる
電圧コントロール部を設け、テレビチューナ部またはラ
ジオチューナ部のうち一方の同調電圧入力端子をスイッ
チにより切り換えて、ＰＬＬ周波数シンセサイザ部と電
圧コントロ　゛−ル部とのうちいずれかに接続されるよ
うに構成したので、テレビ放送とラジオ放送との同時受
信ができるという機能を有する優れたテレビチューナ・
ラジオチューナ一体型のチューナを実現できる。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, in addition to the PLL frequency synthesizer section, a voltage control section that can vary the output voltage using a variable resistor is provided, and the tuning voltage input of either the TV tuner section or the radio tuner section is provided. Since the terminals are configured to be connected to either the PLL frequency synthesizer section or the voltage control section by switching the terminals with a switch, it is an excellent product that has the ability to simultaneously receive television broadcasts and radio broadcasts. TV tuner
A tuner with an integrated radio tuner can be realized.

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

図面は本発明の一実施例におけるチューナの回路ブロッ
ク図である。 １・・・ラジオチューナ部、２・・・テレビチューナ部
、３・・・ＰＬＬＬ周波数シンセサイザ部、４・・・電
圧コントロール部、５・・・可変抵抗器、６・・・スイ
ッチ、７゜１０・・・同調電圧出力端子、８，９・・・
同調電圧入力端子 代理人　森　本　義　弘The drawing is a circuit block diagram of a tuner in one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Radio tuner part, 2... Television tuner part, 3... PLLL frequency synthesizer part, 4... Voltage control part, 5... Variable resistor, 6... Switch, 7°10 ... Tuning voltage output terminal, 8, 9...
Tuning voltage input terminal agent Yoshihiro Morimoto

Claims (1)

【特許請求の範囲】[Claims] １、テレビチューナ部と、ラジオチューナ部と、ＰＬＬ
周波数シンセサイザ部と、可変抵抗器により同調用出力
電圧を可変できる電圧コントロール部と、前記テレビチ
ューナ部またはラジオチューナ部の同調電圧入力端子を
前記ＰＬＬ周波数シンセサイザ部の同ｌＩＮ圧出り端子
ど前記電圧コントＬ】−ル部の同調電圧出力端子とに選
択的に切換接続するスイッチとを備えたチューナ。1. TV tuner section, radio tuner section, and PLL
A frequency synthesizer section, a voltage control section that can vary the output voltage for tuning using a variable resistor, and a tuning voltage input terminal of the television tuner section or radio tuner section, and a voltage control section that connects the tuning voltage input terminal of the TV tuner section or the radio tuner section to the same IN output terminal of the PLL frequency synthesizer section. A tuner equipped with a switch for selectively connecting the control L to the tuning voltage output terminal of the control section.
JP6843584A 1984-04-05 1984-04-05 Tuner Pending JPS60212022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6843584A JPS60212022A (en) 1984-04-05 1984-04-05 Tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6843584A JPS60212022A (en) 1984-04-05 1984-04-05 Tuner

Publications (1)

Publication Number Publication Date
JPS60212022A true JPS60212022A (en) 1985-10-24

Family

ID=13373621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6843584A Pending JPS60212022A (en) 1984-04-05 1984-04-05 Tuner

Country Status (1)

Country Link
JP (1) JPS60212022A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170619A (en) * 1981-04-15 1982-10-20 Fujitsu General Ltd Pll synthesizer tuner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170619A (en) * 1981-04-15 1982-10-20 Fujitsu General Ltd Pll synthesizer tuner

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