JPH0313081A - Tv broadcast receiver with rf signal output terminal - Google Patents
Tv broadcast receiver with rf signal output terminalInfo
- Publication number
- JPH0313081A JPH0313081A JP14659789A JP14659789A JPH0313081A JP H0313081 A JPH0313081 A JP H0313081A JP 14659789 A JP14659789 A JP 14659789A JP 14659789 A JP14659789 A JP 14659789A JP H0313081 A JPH0313081 A JP H0313081A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- signal output
- output terminal
- tuner
- broadcast
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はＴＶ放送受信装置に係り、特に磁気記録再生装
置（ＶＴＲ）等において、放送局のチャンネル使用状況
により該ＶＴＲ等のＲＦ信号出力を自動的に切換えるよ
うにしたＲＦ信号出力端子付ＴＶ放送受信装置に関する
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a TV broadcast receiving device, and in particular, in a magnetic recording/reproducing device (VTR), etc., the RF signal output of the VTR, etc. is controlled depending on the channel usage status of the broadcasting station. The present invention relates to a TV broadcast receiving device with an RF signal output terminal that automatically switches.
従来のＶＴＲ等のＡＶ機器におけるＲＦ信号出力チャン
ネルの切換えは、例えば［月刊 ビデオコムＪ １９８
７年５月号、第９０頁〜９１頁に記載のように、放送の
ないチャンネルにＲＦ信号出力を設定する場合は機器の
裏面パネルにＲＦ信号出力チャンネル切換え用のスライ
ドスイッチなどの手動操作手段を設けておき、必要に応
じてこのスイッチ等をを手動で切換えるようになってい
た。For example, switching the RF signal output channel in conventional AV equipment such as a VTR is described in [Monthly Videocom J 198
As described in the May 7th issue, pages 90 to 91, when setting the RF signal output to a channel that is not broadcast, a manual operation means such as a slide switch for switching the RF signal output channel is installed on the back panel of the device. A switch was provided, and this switch etc. could be changed manually as needed.
上記従来技術においては、ＶＴＲ等のＡＶ機器の使用者
が当該放送地域の放送チャンネル使用状態に合わせてＲ
Ｆチャンネルを放送のないチャンネル（空きチャンネル
）に手動操作で切換えるという使い勝手上繁雑な操作が
要求されるという問題があった。In the above-mentioned conventional technology, the user of AV equipment such as a VTR has to adjust the
There has been a problem in that a user-friendly and complicated operation is required to manually switch the F channel to a non-broadcasting channel (an empty channel).
本発明の目的は、上記従来技術の問題点を解消し、ＲＦ
信号出力端子を自動的に放送の内空きチャンネルに設定
できるようにしたＲＦ信号出力端子付ＴＶ放送受信装置
を提供することにある。The purpose of the present invention is to solve the problems of the above-mentioned prior art and to
To provide a TV broadcast receiving device with an RF signal output terminal capable of automatically setting a signal output terminal to a vacant channel of broadcasting.
上記目的は、チューナ制御用の制御手段（以下、マイク
ロコンピュータと称する）を備え、ＲＦモジュレータに
ＲＦチャンネル切換え制御入力を設け、上記マイクロコ
ンピュータでＲＦモジュレータを制御するように構成し
たことによって達成される。The above object is achieved by comprising a control means for tuner control (hereinafter referred to as a microcomputer), providing an RF channel switching control input to the RF modulator, and configuring the RF modulator to be controlled by the microcomputer. .
ＴＶチューナは、自動チャンネル設定モード時にマイク
ロコンピュータからの制御信号で各チャンネルの放送の
有無を検出してチャンネル設定をする。この時ＲＦチャ
ンネル信号出力チャンネルと同一のチャンネルの放送の
有無を検出し、その検出結果によりマイクロコンピュー
タはＲＦモジュレータのチャンネル切換を制御し、ＲＦ
信号出力を空きチャンネルに自動設定する。In the automatic channel setting mode, the TV tuner detects the presence or absence of broadcasting on each channel using a control signal from the microcomputer and sets the channel. At this time, the presence or absence of broadcasting on the same channel as the RF channel signal output channel is detected, and based on the detection result, the microcomputer controls the channel switching of the RF modulator, and
Automatically set the signal output to an empty channel.
以下、本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明によるＲＦ信号出力端子付ＴＶ放送受信
装置の一実施例を説明するブロック図であって、本発明
をＴＶチューナ内蔵のＶＴＲに適用した例を示す。FIG. 1 is a block diagram illustrating an embodiment of a TV broadcast receiving device with an RF signal output terminal according to the present invention, and shows an example in which the present invention is applied to a VTR with a built-in TV tuner.
同図において、１はＲＦモジュレータ、２はＲＦ信号出
力端子、３はＲＦチャンネル切換制御信号、４は制御手
段であるマイクロコンピュータ、５はＴＶチューナ、６
は映像記録再生回路、７は映像出力切換スイッチ、８は
ＴＶ放送受信用アンテナ、９はチューナ制御信号、１０
は映像信号記録／再生ヘッドである。In the figure, 1 is an RF modulator, 2 is an RF signal output terminal, 3 is an RF channel switching control signal, 4 is a microcomputer that is a control means, 5 is a TV tuner, and 6
1 is a video recording/reproducing circuit, 7 is a video output selector switch, 8 is a TV broadcast receiving antenna, 9 is a tuner control signal, 10
is a video signal recording/playback head.
ＴＶ放送受信用アンテナ８からの受信信号はＴ■チュー
ナ５に印加される。ＴＶチューナ５では、マイクロコン
ピュータ４から予めチューナ制御信号が与えられており
、特定の放送を受信している。The received signal from the TV broadcast receiving antenna 8 is applied to the T tuner 5. The TV tuner 5 receives a tuner control signal from the microcomputer 4 in advance and receives a specific broadcast.
受信した信号は映像記録再生回路６および映像信号出力
切換スイッチ７に送出される。The received signal is sent to the video recording/reproducing circuit 6 and the video signal output changeover switch 7.
磁気ヘッド１０は映像記録再生回路６に接続されており
、磁気テープ上に受信したＴＶ放送信号を記録し再生す
る。The magnetic head 10 is connected to the video recording and reproducing circuit 6, and records and reproduces received TV broadcast signals on a magnetic tape.
一方、映像信号出力切換スイッチ７は、上記ＴＶチュー
ナ５が受信した映像信号と映像信号記録再生回路６の再
生映像信号をマイクロコンピュータ４の制御により選択
して切換え、ＲＦモジュレータ１に出力する。On the other hand, the video signal output changeover switch 7 selects and switches between the video signal received by the TV tuner 5 and the video signal reproduced by the video signal recording and reproducing circuit 6 under the control of the microcomputer 4, and outputs the selected signal to the RF modulator 1.
ＲＦモジュレータｌはマイクロコンピュータ４から送ら
れてくるＲＦチャンネル切換制御信号３により指示され
たチャンネルでＲＦ信号出力端子２にＲＦ倍信号出力す
る。The RF modulator 1 outputs an RF multiplied signal to the RF signal output terminal 2 on the channel specified by the RF channel switching control signal 3 sent from the microcomputer 4.
マイクロコンピュータ４には、ＴＶチャンネルの設定モ
ード時に空きチャンネルを放送の無いチャンネルか電界
強度が弱いチャンネルを記憶させておき、ＲＦチャンネ
ル切換信号３によりＲＦモジュレータ１の出力チャンネ
ルを空きチャンネルに設定しておけばよい。放送チャン
ネルの検出は、受信信号中のビデオ信号の有無をもとに
してもよいし、同期信号成分の有無を検出するようにし
てもよい。The microcomputer 4 stores empty channels in the TV channel setting mode as channels with no broadcasts or channels with weak electric field strength, and sets the output channel of the RF modulator 1 to the empty channel using the RF channel switching signal 3. Just leave it there. Detection of the broadcast channel may be based on the presence or absence of a video signal in the received signal, or may be performed by detecting the presence or absence of a synchronization signal component.
この実施例によれば、使用者はその都度ＲＦチャンネル
の設定をする必要がない。According to this embodiment, the user does not need to set the RF channel each time.
以上説明したように、本発明によれば、ＴＶチューナを
制御するマイクロコンピュータに予メＴＶ放送のない空
きチャンネルを記憶させておくことで、ＲＦモジュレー
タの出力チャンネルを自動設定でき、前記従来技術の欠
点を除いて優れた機能のＲＦ信号出力端子付ＴＶ放送受
信装置を提供することができる。As explained above, according to the present invention, the output channel of the RF modulator can be automatically set by storing empty channels with no pre-programmed TV broadcasts in the microcomputer that controls the TV tuner. It is possible to provide a TV broadcast receiving device with an RF signal output terminal that has excellent functions except for the drawbacks.
第１図は本発明によるＲＦ信号出力端子付ＴＶ放送受信
装置の一実施例を説明するブロック図である。
■・・・・ＲＦモジュレータ、２・・・・ＲＦ信号出力
端子、３・・・・ＲＦチャンネル切換制御信号、４・・
・・制御手段であるマイクロコンピュータ、５・・・・
ＴＶチューナ、６・・・・映像記録再生回路、７・・・
・映像出力切換スイッチ、８・・・・ＴＶ放送受信用ア
ンテナ、９・・・・チューナ制御信号、１０・・・・映
像信号記録／再生ヘッド。
第
図
ＲＦ−Ｅシュシータ
ＲＦ信号出力端子
ＲＦチヤシ乎リすｔ７Ｅ！制行Ｏ看言号マイクロコンヒ
０ユータ
ＴＶチューナ
映像記録再生回路
日央條匁出力切模スイッナ
アンテナ
テユーｒ制ｗＪ＠号FIG. 1 is a block diagram illustrating an embodiment of a TV broadcast receiving device with an RF signal output terminal according to the present invention. ■...RF modulator, 2...RF signal output terminal, 3...RF channel switching control signal, 4...
...Microcomputer, which is a control means, 5...
TV tuner, 6...Video recording and playback circuit, 7...
-Video output selector switch, 8...TV broadcast receiving antenna, 9...tuner control signal, 10...video signal recording/playback head. Figure RF-E signal output terminal RF signal output terminal t7E! Control code Microcontroller TV tuner Video recording and reproducing circuit
Claims (1)
ャンネル選択機能とＲＦ信号出力機能とを備えたＲＦ信
号出力端子付ＴＶ放送受信装置において、前記ＴＶチュ
ーナに少なくとも２系統以上の放送チャンネル検知手段
を設けると共に、上記検知手段の検知結果に基づいて動
作する少なくとも２系統以上のＲＦ信号出力チャンネル
切換手段とを設けたことを特徴とするとするＲＦ信号出
力端子付ＴＶ放送受信装置。 ２、請求項１において、前記ＴＶチューナの受信放送チ
ャンネルにＲＦ信号出力信号チャンネルが少なくとも１
チャンネル以上一致するＲＦ信号出力端子を設けたこと
を特徴とするとするＲＦ信号出力端子付ＴＶ放送受信装
置。 ３、請求項１において、前記ＴＶチューナに放送チャン
ネル受信信号の同期信号のみを検出する手段を備えたこ
とを特徴とするとするＲＦ信号出力端子付ＴＶ放送受信
装置。[Scope of Claims] 1. In a TV broadcast receiving device with an RF signal output terminal, which is equipped with a TV tuner and an RF signal output terminal, and has a broadcast channel selection function and an RF signal output function, the TV tuner has at least two systems. A TV broadcast receiver with an RF signal output terminal, characterized in that it is provided with the above broadcast channel detection means and at least two or more systems of RF signal output channel switching means that operate based on the detection result of the detection means. Device. 2. In claim 1, the receiving broadcast channel of the TV tuner includes at least one RF signal output signal channel.
A TV broadcast receiving device with an RF signal output terminal, characterized in that it is provided with an RF signal output terminal that matches more than one channel. 3. A TV broadcast receiving apparatus with an RF signal output terminal according to claim 1, wherein the TV tuner includes means for detecting only a synchronization signal of a broadcast channel reception signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14659789A JPH0313081A (en) | 1989-06-12 | 1989-06-12 | Tv broadcast receiver with rf signal output terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14659789A JPH0313081A (en) | 1989-06-12 | 1989-06-12 | Tv broadcast receiver with rf signal output terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0313081A true JPH0313081A (en) | 1991-01-22 |
Family
ID=15411323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14659789A Pending JPH0313081A (en) | 1989-06-12 | 1989-06-12 | Tv broadcast receiver with rf signal output terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0313081A (en) |
-
1989
- 1989-06-12 JP JP14659789A patent/JPH0313081A/en active Pending
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