JPH01110321U - - Google Patents
Info
- Publication number
- JPH01110321U JPH01110321U JP522988U JP522988U JPH01110321U JP H01110321 U JPH01110321 U JP H01110321U JP 522988 U JP522988 U JP 522988U JP 522988 U JP522988 U JP 522988U JP H01110321 U JPH01110321 U JP H01110321U
- Authority
- JP
- Japan
- Prior art keywords
- magnetoresistive
- stripe
- recording medium
- magnetoresistive stripe
- magnetic 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.)
- Pending
Links
- 230000003252 repetitive effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案に係る磁気式エンコーダの実施
例を概略的に示す正面図、第２図は同上実施例に
おける磁気抵抗素子の接続関係の例を示す回路図
、第３図は上記実施例における磁気記録媒体と磁
気抵抗素子との位置関係図、第４図は上記実施例
によつて得られる信号の例を示す波形図、第５図
は上記実施例における磁気抵抗素子の抵抗値の変
化の例を示す波形図、第６図は上記実施例におい
て磁気抵抗ストライプが無着磁部に対向するとき
に得られる信号の例を示す波形図、第７図は本考
案に適用可能な検出回路例を示す回路図、第８図
は同上検出回路を用いる場合の磁気記録媒体の着
磁と磁気抵抗ストライプとの位置関係図、第９図
は上記検出回路の動作を示すタイミングチヤート
、第１０図は従来の磁気式エンコーダの例におけ
る磁気記録媒体と磁気抵抗ストライプとの関係図
及び波形図である。
１０……磁気記録媒体、１２……定波長信号部
、１４……無着磁部、１６……磁気抵抗素子、２
０ａ，２０ｂ……磁気抵抗ストライプ、２１……
第１の磁気抵抗ストライプ、２２……第２の磁気
抵抗ストライプ。
Fig. 1 is a front view schematically showing an embodiment of the magnetic encoder according to the present invention, Fig. 2 is a circuit diagram showing an example of the connection relationship of the magnetoresistive elements in the above embodiment, and Fig. 3 is the above embodiment. 4 is a waveform diagram showing an example of a signal obtained by the above embodiment, and FIG. 5 is a diagram showing the change in resistance value of the magnetoresistive element in the above embodiment. FIG. 6 is a waveform diagram showing an example of the signal obtained when the magnetoresistive stripe faces the non-magnetized part in the above embodiment. FIG. 7 is a detection circuit applicable to the present invention. A circuit diagram showing an example, FIG. 8 is a diagram of the positional relationship between the magnetization of the magnetic recording medium and the magnetoresistive stripe when using the same detection circuit as above, FIG. 9 is a timing chart showing the operation of the above detection circuit, and FIG. 10 1 is a relationship diagram and a waveform diagram between a magnetic recording medium and a magnetoresistive stripe in an example of a conventional magnetic encoder. 10...Magnetic recording medium, 12...Constant wavelength signal section, 14...Non-magnetized section, 16...Magnetoresistive element, 2
0a, 20b... Magnetoresistive stripe, 21...
First magnetoresistive stripe, 22...second magnetoresistive stripe.
Claims (1)
定波長信号部とｍλ（ただし、ｍ＝１以上の整数
）以上の長さを有する無着磁部とを形成してなる
磁気記録媒体と、 上記磁気記録媒体に対向して配置され、それぞ
れｍ本の直列接続された磁気抵抗ストライプから
なる第１の磁気抵抗ストライプと第２の磁気抵抗
ストライプを有する磁気抵抗素子とを有してなり
、 上記第１の磁気抵抗ストライプと第２の磁気抵
抗ストライプは略（ｎ＋１／２）λ／２（ただし
、ｎ＝０，１，２，……）の間隔をもつて配置さ
れると共に両者が接続されていることを特徴とす
る磁気式エンコーダ。[Scope of Claim for Utility Model Registration] A constant wavelength signal portion in which a repetitive magnetic signal of a constant wavelength λ is magnetized and recorded, and a non-magnetized portion having a length of mλ or more (however, m = an integer of 1 or more) are formed. a magnetic recording medium, and a magnetoresistive element having a first magnetoresistive stripe and a second magnetoresistive stripe each consisting of m series-connected magnetoresistive stripes, which are arranged opposite to the magnetic recording medium; The first magnetoresistive stripe and the second magnetoresistive stripe are arranged at an interval of approximately (n+1/2)λ/2 (where n=0, 1, 2,...). A magnetic encoder characterized in that the two are connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522988U JPH01110321U (en) | 1988-01-19 | 1988-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522988U JPH01110321U (en) | 1988-01-19 | 1988-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01110321U true JPH01110321U (en) | 1989-07-25 |
Family
ID=31208428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP522988U Pending JPH01110321U (en) | 1988-01-19 | 1988-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01110321U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612815B2 (en) * | 1975-10-18 | 1981-03-24 | ||
| JPS5712441A (en) * | 1980-06-25 | 1982-01-22 | Matsushita Electric Ind Co Ltd | Rotary device |
| JPS6035215A (en) * | 1984-01-20 | 1985-02-23 | Sony Magnescale Inc | Magnetic-scale-signal detecting device |
-
1988
- 1988-01-19 JP JP522988U patent/JPH01110321U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612815B2 (en) * | 1975-10-18 | 1981-03-24 | ||
| JPS5712441A (en) * | 1980-06-25 | 1982-01-22 | Matsushita Electric Ind Co Ltd | Rotary device |
| JPS6035215A (en) * | 1984-01-20 | 1985-02-23 | Sony Magnescale Inc | Magnetic-scale-signal detecting device |
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