JPH02162514A - Magnetic recording and reproducing head - Google Patents
Magnetic recording and reproducing headInfo
- Publication number
- JPH02162514A JPH02162514A JP31516988A JP31516988A JPH02162514A JP H02162514 A JPH02162514 A JP H02162514A JP 31516988 A JP31516988 A JP 31516988A JP 31516988 A JP31516988 A JP 31516988A JP H02162514 A JPH02162514 A JP H02162514A
- Authority
- JP
- Japan
- Prior art keywords
- head
- heads
- pair
- reproducing
- recording
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、回転ヘッドドラムによって映像信号等を記録
再生する装置に装着する磁気記録再生ヘッドに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic recording/reproducing head mounted on a device for recording/reproducing video signals or the like using a rotating head drum.
（従来の技術）
回転ヘッドドラムによって映像信号等を記録再生する際
、高帯域の信号、あるいは複合された信号を記録するた
めに、信号を分割して複数のヘッドで同時に記録する方
式が公知となっている。(Prior Art) When recording and reproducing video signals, etc. using a rotating head drum, a method is well known in which the signals are divided and recorded simultaneously by multiple heads in order to record high-band signals or composite signals. It has become.
また、記録中に記録された信号を直ちに再生することに
よって記録状態を確認し、必要な場合、記録特性を微調
整することによって良好な記録状態を維持する機能を有
している。It also has a function to confirm the recording state by immediately reproducing the signal recorded during recording, and to maintain a good recording state by finely adjusting the recording characteristics if necessary.
（発明が解決しようとする課題）
上記、従来の装置においては、一対のヘッドに記録電流
を流し、他の一対のヘッドでテープーヒに記録された微
少な信号を再生するため、記録ヘッドに流れる記録電流
が再生ヘッドに飛び込むなど。(Problems to be Solved by the Invention) In the conventional device described above, a recording current is passed through a pair of heads, and the other pair of heads reproduces a minute signal recorded on the tape. Electric current jumps into the playback head, etc.
同時再生におけるＳＮ比を劣化させる欠点があった。This had the drawback of deteriorating the SN ratio in simultaneous reproduction.
本発明の目的は、従来の欠点を解消し、ドラム上に配置
される各ヘッドにおいて、記録ヘッドはノイズの発（Ｂ
を最小にし、再生ヘッドはノイズの受信を最小にし、同
時に再生におけるＳＮ比を向−１ニさせるヘッド構成を
提供することである。It is an object of the present invention to eliminate the conventional drawbacks, and in each head disposed on the drum, the recording head generates noise (B
It is an object of the present invention to provide a head configuration that minimizes noise reception in the playback head and at the same time improves the signal-to-noise ratio in playback to -1.
（課題を解決するための手段）
本発明の磁気記録再生ヘッドは、回転ドラムに互いに近
接して配置された一対の記録ヘッドと、互いに近接して
配置された一対の再生ヘッドとを設け、記録ヘッドによ
って記録された信号を、再生ヘッドで略同時に再生する
装置に装着される磁気記録再生ヘッドであって、各ヘッ
ドそれぞれの左右の巻線数と左右コアの断面積との積が
略同一となるよう構成したものである。(Means for Solving the Problems) A magnetic recording/reproducing head of the present invention includes a pair of recording heads disposed close to each other on a rotating drum and a pair of reproducing heads disposed close to each other, A magnetic recording and reproducing head that is attached to a device that uses a reproducing head to reproduce signals recorded by the head almost simultaneously, wherein the product of the number of left and right windings of each head and the cross-sectional area of the left and right cores is approximately the same. It is configured so that
（作 用）
本発明によれば、コアの断面積と巻線数の積が左右同一
となるようヘッドを構成することによって同時再生時の
ＳＮ比を向上させることができる。(Function) According to the present invention, the SN ratio during simultaneous reproduction can be improved by configuring the head so that the product of the cross-sectional area of the core and the number of windings is the same on the left and right sides.
（実施例）
本発明の一実施例を第１図および第２図に基づいて説明
する。第１図は本発明の磁気記録再生ヘッドを装着した
ドラムの平面図である。同図において、ドラム１０には
一対の記録ヘッド１２．１４が取付けられ、６０°離れ
た位置に一対の再生ヘッド１６゜１８が設けられている
。なお２０は消去ヘッドである。(Example) An example of the present invention will be described based on FIGS. 1 and 2. FIG. 1 is a plan view of a drum equipped with a magnetic recording/reproducing head of the present invention. In the figure, a pair of recording heads 12, 14 are attached to a drum 10, and a pair of reproducing heads 16, 18 are provided at positions 60 degrees apart. Note that 20 is an erasing head.
第２図は一対の記録ヘッドの拡大図である。同図におい
て、ヘッド１２はＡコア２２．Ｂコア２４よりなり巻線
２６．２８が施されている。Ｂコア２４はヘッド巻線孔
３０が設けられている。同様にヘッド１４はＡコア３２
、Ｂコア３４、巻線３６．３８．巻線孔４０を有してい
る。FIG. 2 is an enlarged view of a pair of recording heads. In the figure, the head 12 has an A core 22. It consists of a B core 24 and is provided with windings 26 and 28. The B core 24 is provided with a head winding hole 30. Similarly, the head 14 has the A core 32
, B core 34, winding 36.38. It has a winding hole 40.
ヘッド１２とヘッド１４は上下方向に３９戸の高さ差を
設けて取付けられ（図示せず）、横方向には４．５ｍｎ
離れて取付けられている。ヘッド１２のＡ。The heads 12 and 14 are installed with a height difference of 39 mm in the vertical direction (not shown), and a height difference of 4.5 mm in the horizontal direction.
mounted apart. Head 12 A.
Ｂコアの有効厚さは４４戸でヘッド１４のＡ、Ｂコアの
有効厚さは３６戸である。Ａ、Ｂコアの横幅はヘッド１
２．１４共に１．５■であり１巻線孔３０および４０の
横幅はそれぞれ０．２５＋ｓ＋である。The effective thickness of the B core is 44 mm, and the effective thickness of the A and B cores of the head 14 is 36 mm. The width of A and B cores is head 1
2.14 are both 1.5 square meters, and the width of each winding hole 30 and 40 is 0.25+s+.
このようなヘッド条件において、ヘッド１２のＡコア２
２には巻線２６は９ターンに設定され、Ｂコア２４側の
巻線２８は１１ターンとなっている。なぜなら、Ａコア
２２の断面積と巻線数の積は１．５ｎｙｎ Ｘ４４ＩＪ
ＷＩＸ９ターンであり、Ｂコア２４の断面積は（１，５
ｎｍ −０，２５ｎｗｎ）Ｘ４／ｌｚｍであり、コア断
面積と巻線数の積を等しくするには９ターンでなく、１
１ターンにすることが必要である。Under such head conditions, the A core 2 of the head 12
2, the winding 26 has 9 turns, and the winding 28 on the B core 24 side has 11 turns. This is because the product of the cross-sectional area of A core 22 and the number of turns is 1.5nyn X44IJ
WIX is 9 turns, and the cross-sectional area of B core 24 is (1,5
nm - 0,25nwn)
It is necessary to do it in one turn.
同様にヘッド１４のＡコア３２では巻線３６は１０ター
ンであり、Ｂコア３４の巻線３８は１２ターンに設定さ
れている。Similarly, the winding 36 of the A core 32 of the head 14 has 10 turns, and the winding 38 of the B core 34 has 12 turns.
以上が一対の記録ヘッドの構成であり、同様に一対の再
生ヘッド１６．１８についても基本の構成は同一である
。すなわちヘッド１６の形状はヘッド１２と同一であり
、ヘッド１８の形状はヘッド１４と同一である。したが
って、ヘッド１６の巻線はヘッド１２の巻線と同じく９
ターンと１１ターン、ヘッド１８の巻線はヘッド１４０
巻線と同じ＜１０ターンと１２ターンに構成されている
。The above is the configuration of the pair of recording heads, and similarly, the basic configuration of the pair of reproducing heads 16 and 18 is the same. That is, the shape of the head 16 is the same as the head 12, and the shape of the head 18 is the same as the head 14. Therefore, the winding of the head 16 is the same as the winding of the head 12.
Turn and 11 turns, head 18 winding is head 140
It is composed of <10 turns and 12 turns, same as the winding.
本発明のヘッドを装着した装置における同時再生のＳＮ
比は、従来の左右同一巻数のヘッドに比べ、６ｄＢ以上
改善されている。SN of simultaneous playback in a device equipped with the head of the present invention
The ratio is improved by more than 6 dB compared to a conventional head with the same number of windings on the left and right sides.
（発明の効果）
本発明によれば、ヘッドはコアの断面積と巻線数の積が
左右同一になるように構成したものであり、巻線された
左右コアのインダクタンスはほぼ同一になり、記録ヘッ
ドはノイズの発信が減少し。(Effects of the Invention) According to the present invention, the head is configured such that the product of the cross-sectional area of the core and the number of windings is the same on the left and right sides, and the inductance of the left and right wound cores is almost the same. The recording head emits less noise.
再生ヘッドはノイズの受信が減少し、同時再生のＳＮ比
は大幅に改善され、その実用上の効果は大である。The reproduction head receives less noise, and the S/N ratio of simultaneous reproduction is greatly improved, which has great practical effects.
第１図は本発明の一実施例における磁気記録再生ヘッド
を装着したドラムの平面図、第２図は同拡大平面図であ
る。
１０・・・ ドラム、 １２．１４・・・記録ヘッド。
１６、１８・・・再生ヘッド、２０・・・消去ヘッド、
２２・・・ヘッド１２のＡコア、 ２４ ・・・ヘッ
ド１２のＢコア、 ２６．２８．３６．３８・・・巻線
、３０・・・ヘッド１２の巻線孔、３２・・・ヘッド１
４のＡコア、３４・・・ヘット１４のＢコア、４０・・
・ヘッド１４の巻線孔。
特許出願人 松下電器産業株式会社
１ｏ −−−ｓり、ム、
１２．１４−一一言已４粂△５．Ｐ
１６．１８−ｍ−内生Δ７に
２ｏ −一一澗去△ッド
第１図
第２図FIG. 1 is a plan view of a drum equipped with a magnetic recording/reproducing head according to an embodiment of the present invention, and FIG. 2 is an enlarged plan view of the drum. 10... Drum, 12.14... Recording head. 16, 18... reproducing head, 20... erasing head,
22... A core of head 12, 24... B core of head 12, 26.28.36.38... Winding wire, 30... Winding hole of head 12, 32... Head 1
A core of 4, 34... B core of head 14, 40...
- Winding hole of head 14. Patent applicant: Matsushita Electric Industrial Co., Ltd. 12.14-1 word 4 △5. P 16.18-m-endogenous Δ7 to 2o-11 removal △dd Fig. 1 Fig. 2
Claims (1)
ドと、互いに近接して配置された一対の再生ヘッドとを
設け、前記記録ヘッドによって記録された信号を、前記
再生ヘッドで略同時に再生する装置に装着される磁気記
録再生ヘッドであって、前記各ヘッドそれぞれの左右の
巻線数を左右コアの断面積との積が略同一となるよう構
成したことを特徴とする磁気記録再生ヘッド。A device that includes a pair of recording heads disposed close to each other and a pair of playback heads disposed close to each other on a rotating drum, and substantially simultaneously reproduces signals recorded by the recording heads with the playback head. 1. A magnetic recording and reproducing head mounted on a magnetic recording and reproducing head, characterized in that the product of the number of windings on the left and right sides of each of the heads and the cross-sectional area of the left and right cores is approximately the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31516988A JP2732405B2 (en) | 1988-12-15 | 1988-12-15 | Magnetic recording / reproducing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31516988A JP2732405B2 (en) | 1988-12-15 | 1988-12-15 | Magnetic recording / reproducing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02162514A true JPH02162514A (en) | 1990-06-22 |
| JP2732405B2 JP2732405B2 (en) | 1998-03-30 |
Family
ID=18062256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31516988A Expired - Lifetime JP2732405B2 (en) | 1988-12-15 | 1988-12-15 | Magnetic recording / reproducing head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2732405B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT512819A3 (en) * | 2012-04-19 | 2015-01-15 | Kmt Kunststoff Metalltechnik Gmbh | Apparatus and method for injection molding a jacket of a component |
-
1988
- 1988-12-15 JP JP31516988A patent/JP2732405B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT512819A3 (en) * | 2012-04-19 | 2015-01-15 | Kmt Kunststoff Metalltechnik Gmbh | Apparatus and method for injection molding a jacket of a component |
| AT512819B1 (en) * | 2012-04-19 | 2015-03-15 | Kmt Kunststoff Metalltechnik Gmbh | Apparatus and method for injection molding a jacket of a component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2732405B2 (en) | 1998-03-30 |
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