JP2876777B2 - Magnetic recording and playback device - Google Patents
Magnetic recording and playback deviceInfo
- Publication number
- JP2876777B2 JP2876777B2 JP2302011A JP30201190A JP2876777B2 JP 2876777 B2 JP2876777 B2 JP 2876777B2 JP 2302011 A JP2302011 A JP 2302011A JP 30201190 A JP30201190 A JP 30201190A JP 2876777 B2 JP2876777 B2 JP 2876777B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pal
- recording
- circuit
- secam
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、マルチ方式の磁気録画再生装置に関するも
のである。Description: TECHNICAL FIELD The present invention relates to a multi-type magnetic recording / reproducing apparatus.
従来の技術 近年、磁気録画再生装置は、文化交流や企業の国際化
が盛んになるにつれて、世界の放送方式を同時に記録再
生できるマルチ方式磁気録画再生装置が、流行しつつあ
る。特に欧州（西欧と東欧）や中近東においては、PAL
方式及びSECAM方式の２方式が、記録再生できる磁気録
画再生装置が、主流となっている。2. Description of the Related Art In recent years, multi-system magnetic recording / reproducing apparatuses capable of simultaneously recording and reproducing world broadcasting systems have become popular as cultural exchange and internationalization of companies have become active. Especially in Europe (Western and Eastern Europe) and the Middle East, PAL
Magnetic recording / reproducing devices capable of recording / reproducing the two systems, the system and the SECAM system, have become mainstream.
以下、図面を参照しながら、上述した従来のPAL/SECA
M2方式磁気録画再生装置の一例について、説明する。第
２図が、従来の方式を示すブロック図である。アンテナ
から入った放送信号は、２チューナ・デモジュレータに
よって、映像信号に復調される。この映像信号は、５輝
度信号・色信号分離回路に入り、輝度信号（水平及び垂
直同期信号を含む）と、色信号に分離され、それぞれ６
輝度信号処理回路と７色信号処理回路に入っていく。７
色信号処理回路に入った色信号は、８セカム信号判別回
路に供給され、セカム信号であるかどうか判別される。
セカム信号であると判別された場合、８セカム信号処理
回路より、７色信号処理回路に、その識別信号が入力さ
れ、７色信号処理回路において、セカムの低域変換記録
処理（本セカムの1/4カウントダウン記録方式とは別の
方式で、一般的には、中近東セカム（MESECAM）とか、
東独セカム（DDR・SECAM）と呼ばれている）が行われ
る。また、セカム信号でないと判別した場合には、セカ
ム識別信号は出力されず、７色信号処理回路において
は、通常のパル信号の低域変換記録処理が、行われる。
パル信号，セカム信号いずれの場合でも、６輝度信号処
理回路にてFM変調された輝度信号と、７色信号処理回路
にて低減変換された色信号とが、９記録増幅回路で増幅
されて、10ロータリートランス及び11ビデオヘッドを経
由して、磁気テープ上に記録される。Hereinafter, the conventional PAL / SECA described above with reference to the drawings.
An example of the M2 magnetic recording / reproducing apparatus will be described. FIG. 2 is a block diagram showing a conventional system. A broadcast signal input from an antenna is demodulated into a video signal by a two-tuner demodulator. This video signal enters a luminance signal / color signal separation circuit, and is separated into a luminance signal (including a horizontal and vertical synchronization signal) and a chrominance signal.
The processing enters the luminance signal processing circuit and the seven-color signal processing circuit. 7
The color signal input to the color signal processing circuit is supplied to an 8-secum signal discrimination circuit, and it is discriminated whether the signal is a secum signal.
If it is determined that the signal is a secum signal, the identification signal is input from the 8-secum signal processing circuit to the 7-color signal processing circuit. / 4 Countdown recording method is a different method, generally, Middle East SECAM (MESECAM),
East German Secum (called DDR SECAM) is performed. If it is determined that the signal is not a secum signal, the secum identification signal is not output, and the seven-color signal processing circuit performs a normal low-frequency conversion recording process of the pal signal.
In both the pal signal and the secum signal, the luminance signal FM-modulated by the 6-luminance signal processing circuit and the color signal reduced and converted by the 7-color signal processing circuit are amplified by the 9 recording amplifier circuit, It is recorded on a magnetic tape via 10 rotary transformers and 11 video heads.
発明が解決しようとする課題 しかしながら上記のような構成では、自動判別だけに
なっており、しかも、セカム信号を独自にパルに変換し
て電波を出力している場合などで、変換の特性が悪い時
に誤判別（パル信号なのにセカム信号と判別する）し、
色がつかないという問題が発生することもあり、また自
動判別回路のコストが、かかるという問題を有してい
た。本発明は自動判別回路を廃止するとともに、放送波
受信のチャンネルをプリセットする際に、パル方式の放
送信号かセカム方式の放送かをメモリーしておき、記録
する時、自動的にパル方式かセカム方式かを選択できる
ようにした磁気録画再生装置を提供するものである。Problems to be Solved by the Invention However, in the above-described configuration, only automatic discrimination is performed, and the conversion characteristics are poor, for example, when the secum signal is independently converted to pal and radio waves are output. Occasionally misjudgment (identifies a pal signal but a secum signal)
There is a problem that the color cannot be applied, and the cost of the automatic determination circuit is increased. The present invention abolishes the automatic discrimination circuit and, when presetting a broadcast wave receiving channel, stores in memory whether a pal system broadcast signal or a secam system broadcast, and automatically records the pal system or secam system when recording. It is an object of the present invention to provide a magnetic recording / reproducing apparatus capable of selecting a system.
課題を解決するための手段 上記課題を解決するために、本発明の磁気録画再生装
置は、放送チャンネルをプリセットする時にPAL方式かS
ECAM方式かの識別信号を同時にメモリーさせておき、放
送チャンネルの記録を行う際に、前記識別信号を利用し
て、PAL方式又はSECAM方式の記録系回路を動作させて記
録できるようにした構成をそなえたものである。Means for Solving the Problems In order to solve the above problems, the magnetic recording / reproducing apparatus of the present invention uses a PAL system or a SAL system when presetting a broadcast channel.
An identification signal of the ECAM system is stored in the memory at the same time, and when recording a broadcast channel, the recording system circuit of the PAL system or the SECAM system is operated by using the identification signal to perform recording. It is provided.
作用 本発明は、上記した構成によって、PAL/SECAMの自動
判別回路が不要で、なおかつチャンネル選択時にPAL/SE
CAM識別信号が正確に出力されることになり、これによ
り、コストダウンができるばかりでなく、判別の誤動作
という問題も解決できることとなる。Operation The present invention, with the above-described configuration, does not require an automatic PAL / SECAM discriminating circuit, and furthermore, the PAL / SECAM is used when a channel is selected.
The CAM identification signal is output accurately, which can not only reduce the cost but also solve the problem of the malfunction of the discrimination.
実 施 例 以下本発明の実施例の磁気録画再生装置について、図
面を参照しながら説明する。第１図は、本発明の実施例
を、示すものである。第２図の従来例と比較して、3A選
局回路と4Aメモリーが変わっており、3A選局回路からPA
L/SECAM識別信号が、７色信号処理回路に供給されるよ
うになっている（接続線Ａ経由）。3A選局回路と4Aメモ
リーでは、放送チャンネルをプリセットする時に、その
受信チャンネルが、PAL方式か、SECAM方式かによって識
別する信号を記憶させておき、放送チャンネルを受信し
て記録を行う時に、PAL方式かSECAM方式の識別信号を出
力するようになっている。従って本発明の方式を用いれ
ば、PAL/SECAMの自動判別回路が不要になるばかりでな
く、放送チャンネル選択と同時に、あらかじめ記憶させ
ておいたPAL/SECAM識別信号が出力されて、７色信号処
理回路において、それぞれの方式に合致した信号処理が
行うことができて、誤判別による色消えの問題から開放
されるのである。Embodiment Hereinafter, a magnetic recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention. Compared to the conventional example of Fig. 2, the 3A tuning circuit and 4A memory are different,
The L / SECAM identification signal is supplied to the seven-color signal processing circuit (via the connection line A). In the 3A channel selection circuit and 4A memory, when presetting a broadcast channel, a signal identifying whether the received channel is the PAL system or the SECAM system is stored, and when the broadcast channel is received and recorded, the PAL is used. Or SECAM type identification signal. Therefore, the use of the method of the present invention not only eliminates the need for an automatic PAL / SECAM discriminating circuit, but also outputs a pre-stored PAL / SECAM identification signal at the same time as selecting a broadcast channel, and performs seven-color signal processing. In the circuit, signal processing conforming to each method can be performed, and the problem of color erasure due to erroneous determination is released.
発明の効果 以上のように本願発明によれば、誤判別の防止及び、
判別回路の削除というすぐれた効果を得ることができ
る。Effects of the Invention As described above, according to the present invention, prevention of erroneous determination and
An excellent effect of eliminating the determination circuit can be obtained.
第１図は本発明の一実施例の構成を示すブロック図、第
２図は従来方式の構成を示すブロック図である。 １……アンテナ、２……チューナーデモジュレータ、３
……選局回路、４……メモリー、５……分離回路、６…
…輝度信号処理回路、７……色信号処理回路、９……記
録増幅回路、10……ロータリトランス、11……ビデオヘ
ッド。FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of a conventional system. 1 ... antenna, 2 ... tuner demodulator, 3
…… Tuning circuit, 4… Memory, 5… Separation circuit, 6…
... luminance signal processing circuit, 7 ... color signal processing circuit, 9 ... recording amplifier circuit, 10 ... rotary transformer, 11 ... video head.
Claims (1)
生装置であって、放送チャンネルをプリセットする時
に、PAL方式かSECAM方式かの識別信号を同時にメモリー
（記憶）させておき、放送チャンネルの記録を行う際
に、前記識別信号を利用してPAL方式又はSECAM方式の記
録系回路を動作させて、記録することを特徴とする磁気
録画再生装置。1. A magnetic recording / reproducing apparatus of two systems of a PAL system and a SECAM system, wherein when a broadcast channel is preset, an identification signal of the PAL system or the SECAM system is simultaneously stored in a memory. A magnetic recording / reproducing apparatus for performing recording by operating a recording system circuit of the PAL system or the SECAM system using the identification signal when performing recording.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302011A JP2876777B2 (en) | 1990-11-06 | 1990-11-06 | Magnetic recording and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302011A JP2876777B2 (en) | 1990-11-06 | 1990-11-06 | Magnetic recording and playback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04172792A JPH04172792A (en) | 1992-06-19 |
| JP2876777B2 true JP2876777B2 (en) | 1999-03-31 |
Family
ID=17903817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2302011A Expired - Fee Related JP2876777B2 (en) | 1990-11-06 | 1990-11-06 | Magnetic recording and playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2876777B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100386054B1 (en) * | 1994-10-07 | 2003-08-30 | 소니 가부시끼 가이샤 | How to set up a video camera and video camera |
-
1990
- 1990-11-06 JP JP2302011A patent/JP2876777B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04172792A (en) | 1992-06-19 |
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