JPS6435533U - - Google Patents
Info
- Publication number
- JPS6435533U JPS6435533U JP2795388U JP2795388U JPS6435533U JP S6435533 U JPS6435533 U JP S6435533U JP 2795388 U JP2795388 U JP 2795388U JP 2795388 U JP2795388 U JP 2795388U JP S6435533 U JPS6435533 U JP S6435533U
- Authority
- JP
- Japan
- Prior art keywords
- head
- track
- scanning
- pilot signal
- tilt error
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
第１図は、本考案の一実施例を示すトラツキン
グ誤差検出回路のブロツク図、第２図は誤差角補
正手段の一例を示すテープガイド制御機構図であ
る。第３図〜第５図は、それぞれ本考案の説明に
供する図である。
１……再生信号入力端子、２……ヘツド切換え
信号入力端子、３……ＡＴＦ誤差信号出力端子、
４……傾き誤差信号出力端子、５……ＲＦアンプ
、６……ローパスフイルタ、７……エンベロープ
検波回路、８〜１１……サンプルホールド回路、
１２……イコライザー、１３……シンク信号検出
器、１４……制御装置、１５，１６，１８……引
算器、１７……加算器、２４′，２５′……ガイ
ドローラ、２７，２８……ガイドローラ駆動機構
、２９……駆動回路、３０……傾き誤差信号入力
端子。
FIG. 1 is a block diagram of a tracking error detection circuit showing an embodiment of the present invention, and FIG. 2 is a diagram of a tape guide control mechanism showing an example of error angle correction means. 3 to 5 are diagrams for explaining the present invention, respectively. 1...Reproduction signal input terminal, 2...Head switching signal input terminal, 3...ATF error signal output terminal,
4...Slope error signal output terminal, 5...RF amplifier, 6...Low pass filter, 7...Envelope detection circuit, 8-11...Sample hold circuit,
12... Equalizer, 13... Sink signal detector, 14... Control device, 15, 16, 18... Subtractor, 17... Adder, 24', 25'... Guide roller, 27, 28... ...Guide roller drive mechanism, 29...Drive circuit, 30...Tilt error signal input terminal.
Claims (1)
トラツクの両端部近傍の第１と第２のエリアに記
録されるパイロツト信号に基づいてヘツドの走査
トラツク方向に対する該ヘツドの走査方向の角度
誤差を検出する傾き誤差検出回路であり、 前記ヘツドの走査トラツクに隣接する一方のト
ラツクから再生される前記パイロツト信号の第１
の再生レベル及び／又は前記走査トラツクに隣接
する他方のトラツクから再生される前記パイロツ
ト信号の第２の再生レベルを検出するパイロツト
信号レベル検出手段と、 前記第１と第２の各エリアで検出される前記第
１及び／又は第２の再生レベルの差情報に基づく
傾き誤差情報を形成する傾き誤差検出手段とから
なり、 前記傾き誤差情報が前記ヘツドの走査トラツク
方向に対する前記ヘツドの走査方向の角度誤差を
示すように構成したことを特徴とする傾き誤差検
出回路。[Claims for Utility Model Registration] Using the helical scan method, the scanning direction of the head is determined relative to the scanning track direction of the head based on pilot signals recorded in the first and second areas near both ends of each track of the magnetic tape. a tilt error detection circuit for detecting an angular error of the first pilot signal reproduced from one track adjacent to the scanning track of the head;
pilot signal level detecting means for detecting a reproduction level of the pilot signal and/or a second reproduction level of the pilot signal reproduced from the other track adjacent to the scanning track; tilt error detection means for forming tilt error information based on difference information between the first and/or second reproduction levels, the tilt error information being an angle of the scanning direction of the head with respect to the scanning track direction of the head; A tilt error detection circuit characterized in that it is configured to indicate an error.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988027953U JPH087526Y2 (en) | 1988-03-02 | 1988-03-02 | Tilt error detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988027953U JPH087526Y2 (en) | 1988-03-02 | 1988-03-02 | Tilt error detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6435533U true JPS6435533U (en) | 1989-03-03 |
| JPH087526Y2 JPH087526Y2 (en) | 1996-03-04 |
Family
ID=31250900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988027953U Expired - Lifetime JPH087526Y2 (en) | 1988-03-02 | 1988-03-02 | Tilt error detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087526Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287354A (en) * | 1988-09-22 | 1990-03-28 | Nakamichi Corp | Error detecting circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5233505A (en) * | 1975-09-08 | 1977-03-14 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic tape recording reproduction device |
| JPS60251508A (en) * | 1984-05-27 | 1985-12-12 | Sansui Electric Co | Tracking error signal detector |
| JPS6318564A (en) * | 1986-07-09 | 1988-01-26 | Toshiba Corp | Capstan control circuit for tape reproducing device with helical scanning system |
-
1988
- 1988-03-02 JP JP1988027953U patent/JPH087526Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5233505A (en) * | 1975-09-08 | 1977-03-14 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic tape recording reproduction device |
| JPS60251508A (en) * | 1984-05-27 | 1985-12-12 | Sansui Electric Co | Tracking error signal detector |
| JPS6318564A (en) * | 1986-07-09 | 1988-01-26 | Toshiba Corp | Capstan control circuit for tape reproducing device with helical scanning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287354A (en) * | 1988-09-22 | 1990-03-28 | Nakamichi Corp | Error detecting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087526Y2 (en) | 1996-03-04 |
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