JPH0365892A - magnetic recording and playback device - Google Patents
magnetic recording and playback deviceInfo
- Publication number
- JPH0365892A JPH0365892A JP1201879A JP20187989A JPH0365892A JP H0365892 A JPH0365892 A JP H0365892A JP 1201879 A JP1201879 A JP 1201879A JP 20187989 A JP20187989 A JP 20187989A JP H0365892 A JPH0365892 A JP H0365892A
- Authority
- JP
- Japan
- Prior art keywords
- delay line
- magnetic recording
- color signal
- pal
- delay
- 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
Landscapes
- Television Systems (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、４．４３ＭｔｌｚＰ Ａ Ｌ方式および４．
４３ＨｔｌｚＮＴＳＣ方式の２つの映像信号を記録再生
する回路を有する磁気録画再生装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the 4.43MtlzP A L method and the 4.43MtlzP A L system.
The present invention relates to a magnetic recording and reproducing device having a circuit for recording and reproducing two video signals of the 43HtlzNTSC system.
従来の技術
Ｖ）−１ｓ色信号方式としては、４．４３ｔ４Ｈｚ Ｐ
Ａ Ｌ 。Conventional technology V)-1s color signal system is 4.43t4Hz P
A.L.
３．５８ＭＨｚＮＴＳＣ，４，４３ＭＨｚＮＴＳＣ，Ｓ
ＥＣＡＭ、ＭＥＳＥＣＡＭの５つの方式があるが、中近
東などの地域においては、この５方式のうち複数の方式
を１つのビデオテープレコーダ（ＶＴＲ）に搭載したマ
ルチ方式ＶＴＲが、−膜内に販売されている。3.58MHz NTSC, 4,43MHz NTSC, S
There are five systems, ECAM and MESECAM, and in regions such as the Middle East, multi-system VTRs that incorporate multiple systems from these five systems into a single video tape recorder (VTR) are sold within a single unit. ing.
従来の４．４３８）ＩＺＰ Ａ Ｌ方式およびａ、４３
ＨＨｚＮ ＴＳＣ方式の２つの映ｅ信号を記録再生する
回路を有するマルチ方式ＶＴＲの色信号再生処理系を第
２図のブロック図に基づいて説明する。Conventional 4.438) IZP A L method and a, 43
A color signal reproduction processing system of a multi-system VTR having a circuit for recording and reproducing two video signals of the HzN TSC system will be explained based on the block diagram of FIG.
磁気ヘッド１により再生された低域変換クロマ信号ａは
、再生増幅器２で増幅されて色信号再生処理系３へ入力
され、４．４３ＭＨｚクロマ信＠ｂに再生される。色信
号再生処理系３には、低域変換クロマ信号ａから色信号
を分離するくし形フィルタを構成するために、ＰＡＬ方
式再生用の２）−１（Ｈ；水平走査期間、２目＝１２８
μｓｅｃ ＞の遅延線４とＮＴＳＣ方式再生用の１Ｈ（
約６３．５５ μｓｅｃ ＞の遅延１５が設けられ、色
信号方式によってスイッチロで切換えて遅延線４あるい
は遅延線５の出力を色信号処理回路７へ戻している。The low frequency converted chroma signal a reproduced by the magnetic head 1 is amplified by a reproducing amplifier 2, inputted to a color signal reproduction processing system 3, and reproduced into a 4.43 MHz chroma signal @b. The color signal reproduction processing system 3 includes 2)-1 (H; horizontal scanning period, 2nd eye = 128
μsec > delay line 4 and 1H for NTSC playback (
A delay 15 of approximately 63.55 μsec> is provided, and the output of the delay line 4 or 5 is returned to the color signal processing circuit 7 by switching at a switch depending on the color signal system.
発明が解決しようとする課題
しかし従来の構成では、色信号が同じ４．４３８Ｈ２の
サブキャリアでありながら、ＰＡＬ方式、ＮＴＳＣ方式
の違いにより２個の遅延線４，５を必要とし、コストが
高いものとなっているという問題があった。Problems to be Solved by the Invention However, in the conventional configuration, although the color signal is the same 4.438H2 subcarrier, two delay lines 4 and 5 are required due to the difference between the PAL system and the NTSC system, resulting in high cost. There was a problem that it became a thing.
本発明は上記問題を解決するものであり、遅延線の数を
１個としてコストダウンを可能とした磁気録画再生装置
を提供づることを目的とするものである。The present invention is intended to solve the above problem, and aims to provide a magnetic recording and reproducing apparatus that uses only one delay line, thereby making it possible to reduce costs.
課題を解決するための手段
上記問題を解決するため本発明の磁気録画再生装置は、
４．４３Ｍ１ｌＺＰ Ａ Ｌ方式および４．４３ＨＨ２
Ｎ ＴＳＣ方式の２つの映像信号を記録再生する回路を
有する磁気録画再生装置であって、色信号再生処理回路
にＰＡＬ方式再生用の２０（ト１；水平走査期間の遅延
線を設け、この遅延線の途中に、４．４３）ＩＨ２Ｎ
Ｔ Ｓ Ｃ方式再生用の１日遅延用の端子を設け、４．
４３ＭＨ１Ｐ Ａ Ｌ方式の２Ｈの遅延線と４．４３Ｈ
ＨｚＮ Ｔ Ｓ Ｃ方式の１Ｈの遅延線を共用化したこ
とを特徴とするものである。Means for Solving the Problems In order to solve the above problems, the magnetic recording and reproducing device of the present invention has the following features:
4.43M1lZP A L method and 4.43HH2
A magnetic recording and reproducing apparatus having a circuit for recording and reproducing two video signals of the N TSC system, in which a delay line for the horizontal scanning period for PAL system reproduction is provided in the color signal reproduction processing circuit, and the delay line for the horizontal scanning period is 4.43) IH2N in the middle of the line
4. Provide a one-day delay terminal for TSC method playback; 4.
43MH1P AL 2H delay line and 4.43H
This system is characterized by sharing the 1H delay line of the HzN TSC system.
作用
ＰＡＬ方式と、４．４３ＨＨｚＮ Ｔ Ｓ Ｃ方式は、
同シ４．４３８Ｈ２のサブキャリアであり、ＰＡＬ方式
再生のくし形フィルタは２日の遅延線を必要とし、４．
４３ＨＨｚＮ Ｔ Ｓ Ｃ方式再生のくし形フィルタは
１Ｈの遅延線を必要とするため、上記本発明の構成によ
り、ＰＡＬ方式の２Ｈの遅延線の途中に１Ｈ用の端子を
設けることによって、ＰＡＬ方式と４．４３Ｆ４１１Ｚ
Ｎ Ｔ Ｓ Ｃ方式とで、この１個の遅延線が共用され
、切換えながら色信号処理が行える。The operation PAL system and 4.43HzN TSC system are:
The same number of subcarriers is 4.438H2, and the comb filter for PAL reproduction requires a delay line of 2 days.
Since the comb filter for 43HzN TSC system reproduction requires a 1H delay line, the configuration of the present invention provides a 1H terminal in the middle of the 2H delay line of the PAL system, so that it can be used with the PAL system. 4.43F411Z
This one delay line is shared by the NTS C system, and color signal processing can be performed while switching.
実施例 以下、本発明の一実施例を図面に基づいて説明する。Example Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明の一実施例を示す４．４３ＭＨ２ＰＡＬ
方式および４．４３ＨＨｚＮ Ｔ Ｓ Ｃ方式の２つの
映像信号を記録再生する回路を有するマルチ方式ＶＴＲ
の色信号再生処理系のブロック図である。Figure 1 shows a 4.43MH2PAL example of the present invention.
A multi-system VTR that has a circuit for recording and reproducing two video signals: the 4.43HzN TSC system and the 4.43Hz
FIG. 2 is a block diagram of a color signal reproduction processing system of FIG.
磁気ヘッド１１により再生された低域変換クロマ信号Ｃ
は、再生増幅器１２で増幅されて、色信号再生処理系１
３へ入力され、４．４３ ｆ４Ｈｚクロマ信号ｄに再生
される。色信号再生処理系１３には、くし形フィルタを
４１１ｆｉするために遅延線１４が設けられている。こ
の遅延線１４は、ＰＡＬ方式再生用の２１１（ロ：水平
走査期間、２０−１２８μｓｅｃ ）の遅延線であり、
遅延線の途中にａ、４３ＨＨｚＮ Ｔ Ｓ Ｃ方式再生
用の１８（約６３．５５μｓｅｃ ）の遅延用端子１４
Ａを設けている。この遅延線１４を色信号方式によりス
イッチ１５で切換えて使用することによって、１個の遅
延ｓ！１４でＰＡＬ方式および４．４３ＨＨｚＮ ＴＳ
Ｃ方式の２種類のくし形フィルタが構成できる。Low frequency converted chroma signal C reproduced by the magnetic head 11
is amplified by the regenerative amplifier 12 and sent to the color signal reproducing processing system 1.
3 and is reproduced as a 4.43 f4Hz chroma signal d. The color signal reproduction processing system 13 is provided with a delay line 14 for 411fi of the comb filter. This delay line 14 is a 211 (b: horizontal scanning period, 20-128 μsec) delay line for PAL system reproduction,
In the middle of the delay line, there is a delay terminal 14 of 18 (approximately 63.55 μsec) for 43HzN TSC system reproduction.
A is provided. By using this delay line 14 by switching it with a switch 15 according to the color signal method, one delay s! 14 in PAL system and 4.43HzN TS
Two types of C-type comb filters can be constructed.
遅延された信号は、色信号処理回路１６へ戻される。The delayed signal is returned to the color signal processing circuit 16.
このように、従来は２種類のくし形フィルタをｍｒ＆す
るために２個の遅延線を必要としていたところを、１個
の遅延１ｉ！１４とすることができ、高価な電気部品で
ある遅延線を減らすことで２個を使用するときと比較し
て３０％以上のコストダウンを図ることができる。In this way, whereas conventionally two delay lines were required to mr& two types of comb filters, one delay line 1i! By reducing the number of delay lines, which are expensive electrical components, it is possible to reduce the cost by 30% or more compared to when two delay lines are used.
発明の効果
以上のように本発明によれば、ＰＡＬ方式の２Ｈの遅延
線の途中に１日用の端子を設けることによって、１個の
遅延線でＰＡＬ方式と４．４３ＭＨｚＮＴＳＣ方式に共
用でき、遅延線の数を２個から１１！！へ減らすことで
コストダウンを図ることができる。Effects of the Invention As described above, according to the present invention, by providing a 1-day terminal in the middle of the 2H delay line of the PAL system, one delay line can be used for both the PAL system and the 4.43 MHz NTSC system. Increase the number of delay lines from 2 to 11! ! It is possible to reduce costs by reducing the number of
第１図は本発明の一実施例を示す磁気録画再生ＩＩＭの
色信号再生処理系のブロック図、第２図は従来の磁気録
画再生装置の色信号再生処理系のブロック図である。
１１・・・磁気ヘッド、１２・・・再生増幅器、１３・
・・色信号再生処理系、１４・・・遅延線、１４Ａ・・
・１Ｈの遅延用端子、１５・・・スイッチ、１６・・・
色＠号処浬回路、Ｃ・・・低域変換クロマ信号、ｄ・・
・４．４３ＨＨｚクロマ信号。FIG. 1 is a block diagram of a color signal reproduction processing system of a magnetic recording and reproduction IIM showing an embodiment of the present invention, and FIG. 2 is a block diagram of a color signal reproduction processing system of a conventional magnetic recording and reproduction apparatus. 11... Magnetic head, 12... Regenerative amplifier, 13.
...Color signal reproduction processing system, 14...Delay line, 14A...
・1H delay terminal, 15...switch, 16...
Color @go processing circuit, C...Low frequency conversion chroma signal, d...
・4.43Hz chroma signal.
Claims (1)
ＮＴＳＣ方式の２つの映像信号を記録再生する回路を有
する磁気録画再生装置であつて、色信号再生処理回路に
ＰＡＬ方式再生用の２水平走査期間の遅延線を設け、こ
の遅延線の途中に、４．４３ＭＨｚＮＴＳＣ方式再生用
の１水平走査期間遅延用の端子を設け、４．４３ＭＨｚ
ＰＡＬ方式の２水平走査期間の遅延線と４．４３ＭＨｚ
ＮＴＳＣ方式の１Ｈの遅延線を共用化したことを特徴と
する磁気録画再生装置。1. 4.43MHz PAL method and 4.43MHz
A magnetic recording and reproducing device having a circuit for recording and reproducing two video signals of the NTSC system, in which a delay line of two horizontal scanning periods for PAL system reproduction is provided in the color signal reproduction processing circuit, and in the middle of this delay line, A terminal for delaying one horizontal scanning period for 4.43MHz NTSC system playback is provided, and the 4.43MHz
Delay line of 2 horizontal scanning periods of PAL system and 4.43MHz
A magnetic recording and reproducing device characterized in that a 1H delay line of the NTSC system is shared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1201879A JPH0365892A (en) | 1989-08-03 | 1989-08-03 | magnetic recording and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1201879A JPH0365892A (en) | 1989-08-03 | 1989-08-03 | magnetic recording and playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365892A true JPH0365892A (en) | 1991-03-20 |
Family
ID=16448375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1201879A Pending JPH0365892A (en) | 1989-08-03 | 1989-08-03 | magnetic recording and playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365892A (en) |
-
1989
- 1989-08-03 JP JP1201879A patent/JPH0365892A/en active Pending
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