JPS6172749U - - Google Patents
Info
- Publication number
- JPS6172749U JPS6172749U JP15616784U JP15616784U JPS6172749U JP S6172749 U JPS6172749 U JP S6172749U JP 15616784 U JP15616784 U JP 15616784U JP 15616784 U JP15616784 U JP 15616784U JP S6172749 U JPS6172749 U JP S6172749U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- beat
- head
- reproducing apparatus
- waveform shaping
- 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
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
第１図は本考案の磁気記録再生装置の実施例を
示す回路図、第２図ａおよび第３図は夫々波形図
、第２図ｂは磁気テープとヘツドとの位置関係を
示す図、第４図はタイムチヤート、第５図および
第６図は夫々作用説明のためのタイムチヤート、
第７図は磁化パターンを示す図、第８図はＦＭ輝
度信号などと共に合成されるパイロツト信号の周
波数分布を示す図、第９図はパイロツト信号の具
体的な周波数分布を示す図、第１０図は磁気ヘツ
ドの具体的なトレース状態を示す図、第１１図は
従来例を示す図、第１２図はトラツキングずれ量
を示すグラフである。
１…磁気ヘツド、３…信号発生器、１３…波形
整形回路、Ａ…ヘツドアンプ、Ｂ…ビート信号発
生手段、Ｃ…出力手段。
FIG. 1 is a circuit diagram showing an embodiment of the magnetic recording/reproducing apparatus of the present invention, FIGS. 2a and 3 are waveform diagrams, respectively, FIG. 2b is a diagram showing the positional relationship between the magnetic tape and the head, and FIG. Figure 4 is a time chart, Figures 5 and 6 are time charts for explaining the operation, respectively.
Figure 7 is a diagram showing the magnetization pattern, Figure 8 is a diagram showing the frequency distribution of the pilot signal synthesized with the FM luminance signal, etc., Figure 9 is a diagram showing the specific frequency distribution of the pilot signal, and Figure 10 is a diagram showing the frequency distribution of the pilot signal. 11 is a diagram showing a specific tracing state of a magnetic head, FIG. 11 is a diagram showing a conventional example, and FIG. 12 is a graph showing a tracking deviation amount. DESCRIPTION OF SYMBOLS 1... Magnetic head, 3... Signal generator, 13... Waveform shaping circuit, A... Head amplifier, B... Beat signal generation means, C... Output means.
Claims (1)
ロツト信号を、回転磁気ヘツドに連係した切り換
えによりＦＭ輝度信号などに合成するとともに前
記回転磁気ヘツドにより記録媒体に記録する手段
と、 再生時に前記記録媒体からの信号をヘツドアン
プを介して取り出し、そのヘツドアンプによる前
記パイロツト信原の再生出力に基づいて２つのビ
ート信号を発生するビート信号発生手段と、 回転磁気ヘツド切り換えパルスに応答して前記
両ビート信号を選択的に切り換え出力する切換回
路と、 両ビート信号を夫々整流するとともにその整流
出力を比較増幅してキヤプスタン位相系制御信号
を出力する出力手段とを有する磁気記録再生装置
において、 前記出力手段から出力される再生パイロツト信
号を波形整形処理する波形整形回路と、 停止状態からの再生に際し、前記波形整形回路
からの再生パイロツト信号とキヤプスタンコント
ロール信号、ヘツドスイツチパルスおよびつなぎ
撮り開始信号に応答して前記ビート信号発生手段
における信号発生器からのパイロツト信号出力タ
イミングを調整する制御手段を含む磁気記録再生
装置。[Claims for Utility Model Registration] Means for synthesizing four consecutive pilot signals having different frequencies into an FM luminance signal or the like by switching in conjunction with a rotating magnetic head and recording it on a recording medium by the rotating magnetic head; beat signal generating means for extracting a signal from the recording medium through a head amplifier during reproduction and generating two beat signals based on the reproduction output of the pilot signal source by the head amplifier; In a magnetic recording and reproducing apparatus, the magnetic recording and reproducing apparatus has a switching circuit that selectively switches and outputs both the beat signals, and an output means that rectifies each of the beat signals, compares and amplifies the rectified outputs, and outputs a capstan phase system control signal. , a waveform shaping circuit that performs waveform shaping processing on the reproduced pilot signal outputted from the output means; and upon reproduction from a stopped state, the reproduced pilot signal from the waveform shaping circuit, the capstan control signal, the head switch pulse, and the continuous shooting. A magnetic recording/reproducing apparatus comprising a control means for adjusting a timing of outputting a pilot signal from a signal generator in the beat signal generating means in response to a start signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984156167U JPH0320916Y2 (en) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984156167U JPH0320916Y2 (en) | 1984-10-16 | 1984-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6172749U true JPS6172749U (en) | 1986-05-17 |
| JPH0320916Y2 JPH0320916Y2 (en) | 1991-05-07 |
Family
ID=30714181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984156167U Expired JPH0320916Y2 (en) | 1984-10-16 | 1984-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0320916Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5965960A (en) * | 1982-10-05 | 1984-04-14 | Akai Electric Co Ltd | Position control device of video head |
-
1984
- 1984-10-16 JP JP1984156167U patent/JPH0320916Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5965960A (en) * | 1982-10-05 | 1984-04-14 | Akai Electric Co Ltd | Position control device of video head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0320916Y2 (en) | 1991-05-07 |
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