JPH01173412A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPH01173412A
JPH01173412A JP33282087A JP33282087A JPH01173412A JP H01173412 A JPH01173412 A JP H01173412A JP 33282087 A JP33282087 A JP 33282087A JP 33282087 A JP33282087 A JP 33282087A JP H01173412 A JPH01173412 A JP H01173412A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic head
winding
signal
input
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
Application number
JP33282087A
Other languages
Japanese (ja)
Other versions
JPH0619810B2 (en
Inventor
Yoshihiko Kato
義彦 加藤
Norio Inomata
則夫 猪股
Ginya Ishiguro
石黒　銀矢
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.)
Nippon Telegraph and Telephone Corp
Tokin Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Tokin Corp
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 Nippon Telegraph and Telephone Corp, Tokin Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62332820A priority Critical patent/JPH0619810B2/en
Publication of JPH01173412A publication Critical patent/JPH01173412A/en
Publication of JPH0619810B2 publication Critical patent/JPH0619810B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To prevent forgery by attaching the half-wave or full-wave rectification circuit or a smoothing filter circuit between the input and the output lines of a winding. CONSTITUTION:A magnetic head is formed by connecting a rectifier 6 for half- wave rectification or full-wave rectification and a capacitor 7 for smoothing between the input and the output lines 5 according to their polarities. The magnetic core 2 of one side is given the winding 3, and it is made to face the other magnetic core as interposing a magnetic gap 1, and the capacitor 7 and the element of the full-wave rectifier 6 are connected between the both ends 4 of the winding 3, and the magnetic head is formed. Then, when a signal is written in the magnetic head of such a kind and when a pulse signal or an AC signal is impressed between the input and the output terminals 8, since the signal becomes a direct current by being rectified by the rectifier 6 and being smoothed by the capacitor 7, and the direct current flows in the winding 3, only a magnetic field by the direct current is generated in the magnetic head. Thus, any signal can not be written, and the forgery can be prevented.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気カード等の磁気媒体Ｃ二記録された磁気信
号を消去するために用いる磁気ヘッド（：関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head (: used for erasing magnetic signals recorded on a magnetic medium C2 such as a magnetic card).

〔従来の技術〕[Conventional technology]

一般に広く普及している読出しを主とするり〜レジット
カードのような磁気カードばかりでなく書き込み読み出
しができる装置も用いられてきている。これらの磁気カ
ードリーダライタも容易に入手可能であるため磁気カー
ドの偽造防止対策が急務となってきている。In addition to widely used magnetic cards such as credit cards, which are mainly used for reading, devices that can write and read have also been used. Since these magnetic card readers/writers are also easily available, measures to prevent counterfeiting of magnetic cards have become an urgent need.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来の磁気カードの偽造防止は記録媒体、信号記録方式
または磁気へ、ドの構造などによって行なわれている。Conventional measures to prevent counterfeiting of magnetic cards include recording media, signal recording methods, and magnetic card structures.

しかし、これらの手段は単独では完全Ｃ；偽造を防止す
ることは困難である。However, these measures alone are difficult to prevent counterfeiting.

その理由は、従来の磁気ヘッドは磁気媒体：：対して少
なからず書き込み能力をもっているためであると考えた
。The reason for this is thought to be that conventional magnetic heads have a considerable ability to write to magnetic media.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は従来のかかる欠点を除くため、ギャップをもっ
た磁気コアに巻回された巻線の両端よりの入出力線間１
：半波または全波用整流器を接続したことを特徴とする
。In order to eliminate such drawbacks of the conventional art, the present invention has been developed to provide a gap between the input and output wires from both ends of the winding wound around the magnetic core with a gap.
: Characterized by connecting a half-wave or full-wave rectifier.

〔作　用〕[For production]

このような構成によると、書き込みが行なわれるパルス
信号または交流信号は巻線に入力されるとき整流平滑さ
れて直流電圧となり磁気へへ、ドは磁気媒体：二記録さ
れているデータを消去することのみ可能となり、信号の
書き込みはできなくなる。According to such a configuration, when the pulse signal or AC signal used for writing is input to the winding, it is rectified and smoothed to become a DC voltage and transferred to the magnetic medium. It becomes possible to write only signals, and it becomes impossible to write signals.

〔実施例〕〔Example〕

以下２本発明の実施例について図面全参照して説明する
。Two embodiments of the present invention will be described below with reference to all the drawings.

第１図は本発明の実施例の回路構成図である。FIG. 1 is a circuit diagram of an embodiment of the present invention.

先端！二ｍ気ギヤ、プ１を有する磁気コア２に巻回され
た巻線３の両端末４を引き出して入出力１３！５とする
。この入出力線５間に半波整流または全波整流用の整流
器６と平滑漏波用のコンデンサ７を極性に従って接続し
て磁気ヘッドを形成する。第２図および第３図は、実施
例の分解構造斜視図および縦断正面図である。−万の磁
気コア２に巻線３を施し、他の磁気コア２とを磁気ギャ
ップ１を挾み突き合わせ巻線３の両端末４間にコンデン
サ７および全波整流器６の素子を接続して磁気ヘッドが
形成される。Tip! Both terminals 4 of a winding 3 wound around a magnetic core 2 having a 2m gear and a pulley 1 are pulled out to provide input and output 13!5. A rectifier 6 for half-wave rectification or full-wave rectification and a capacitor 7 for smooth wave leakage are connected between the input/output lines 5 according to polarity to form a magnetic head. FIGS. 2 and 3 are an exploded perspective view and a longitudinal sectional front view of the embodiment. - Winding 3 is applied to 10,000 magnetic cores 2, and the other magnetic cores 2 are butted with a magnetic gap 1 in between, and a capacitor 7 and a full-wave rectifier 6 are connected between both terminals 4 of the winding 3. A head is formed.

いまこの種の磁気ヘッドに信号を書き込むとき、入出力
端子８間にパルス信号または交流信号を印加すると、整
流器６で整流されコンデンサ７で平滑されて直流となり
巻線３に直流電流が流れるので磁気ヘッドは直流による
磁界が発生するのみであり、いかなる信号も書き込みが
できなくなり、もし、ｅ＆磁気媒体データが記録されて
いればそのデータは消去される。When writing a signal to this type of magnetic head, when a pulse signal or an alternating current signal is applied between the input and output terminals 8, it is rectified by the rectifier 6 and smoothed by the capacitor 7 to become a direct current, which flows through the winding 3. The head only generates a magnetic field due to direct current, and no signals can be written to it, and if e&magnetic media data is recorded, that data will be erased.

〔発明の効果〕〔Effect of the invention〕

以上に述べたよう（二本発明（二よれば、整流器６とコ
ンデンサ７による整流回路全磁気ヘッドの入出力線５間
１−接続一体に形成することによって簡単な構造で磁気
カード等の磁気媒体へのデータの書き込みを防止ができ
る。したがって。As described above (2) According to the present invention (2), a rectifier circuit including a rectifier 6 and a capacitor 7 is formed in one piece between input and output lines 5 of a magnetic head, thereby simplifying the structure and allowing a magnetic medium such as a magnetic card. Therefore, you can prevent data from being written to.

本発明による磁気ヘッドは偽造防止に多大な効果を発揮
する。The magnetic head according to the present invention is highly effective in preventing counterfeiting.

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

第１図は本発明の磁気ヘッドの実施例の回路構成図、第
２図は本発明による磁気ヘッドの実施例：：よる分解構
造斜視図、第３図は第２図１＝おける組立てられた縦断
正面図である。 なお １：ａ気ギャップ、２：磁気コア、３：巻線。 ４：端末、５：入出力線、６：整流器、７：コンデンサ
、８：入出力端子。 つ 第１図 第２図　　　　第３図Fig. 1 is a circuit configuration diagram of an embodiment of a magnetic head according to the present invention, Fig. 2 is a perspective view of an exploded structure of an embodiment of a magnetic head according to the present invention, and Fig. 3 is an assembled diagram of an embodiment of a magnetic head according to the present invention. FIG. Note that 1: air gap, 2: magnetic core, 3: winding. 4: terminal, 5: input/output line, 6: rectifier, 7: capacitor, 8: input/output terminal. Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] １、ギャップを持った磁気コアと該磁気コアに巻回され
た巻線を有する磁気ヘッドにおいて、前記巻線の入出力
線間に半波または全波の整流回路または平滑漏波回路を
装着したことを特徴とする磁気ヘッド。1. In a magnetic head having a magnetic core with a gap and a winding wound around the magnetic core, a half-wave or full-wave rectifier circuit or a smooth leakage circuit is installed between the input and output lines of the winding. A magnetic head characterized by:
JP62332820A 1987-12-28 1987-12-28 Magnetic head Expired - Lifetime JPH0619810B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62332820A JPH0619810B2 (en) 1987-12-28 1987-12-28 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62332820A JPH0619810B2 (en) 1987-12-28 1987-12-28 Magnetic head

Publications (2)

Publication Number Publication Date
JPH01173412A true JPH01173412A (en) 1989-07-10
JPH0619810B2 JPH0619810B2 (en) 1994-03-16

Family

ID=18259166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62332820A Expired - Lifetime JPH0619810B2 (en) 1987-12-28 1987-12-28 Magnetic head

Country Status (1)

Country Link
JP (1) JPH0619810B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001547A1 (en) * 1989-07-14 1991-02-07 Nihon Card Center Kabushiki Kaisha Reader/writer for magnetic cards
US7740105B2 (en) 2004-10-28 2010-06-22 Sango Co., Ltd. Outer tube of exhaust system part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001547A1 (en) * 1989-07-14 1991-02-07 Nihon Card Center Kabushiki Kaisha Reader/writer for magnetic cards
US7740105B2 (en) 2004-10-28 2010-06-22 Sango Co., Ltd. Outer tube of exhaust system part

Also Published As

Publication number Publication date
JPH0619810B2 (en) 1994-03-16

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