JPS63142032U - - Google Patents
Info
- Publication number
- JPS63142032U JPS63142032U JP3384387U JP3384387U JPS63142032U JP S63142032 U JPS63142032 U JP S63142032U JP 3384387 U JP3384387 U JP 3384387U JP 3384387 U JP3384387 U JP 3384387U JP S63142032 U JPS63142032 U JP S63142032U
- Authority
- JP
- Japan
- Prior art keywords
- relative speed
- motor control
- reel motor
- pll circuit
- magnetic tape
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Description
図面はこの考案の一実施例を示すもので、第１
図は全体の回路構成を示すブロツク図、第２図は
第１図のコンパレータ８の詳細な回路構成を示す
ブロツク図である。
１…磁気テープ、２…ドラム、３，４…回転磁
気ヘツド、５…再生アンプ、６，７…イコライザ
、８，１５…コンパレータ、８ｂ…シユミツトト
リガインバータ、８ｄ…オペアンプ、８ｇ〜８ｊ
…インバータ、９…エンベロープ検波回路、１０
…位相比較器、１１，１８…加算器、１２，１９
…フイルタ、１３…電圧制御発振器（ＶＣＯ）、
１４…ＰＬＬ回路、１６…相対速度検出回路、１
７…ＰＷＭ信号変換回路、２０…ドライバ、２１
…リールモータ、２２，２３…リール。
The drawing shows one embodiment of this invention.
The figure is a block diagram showing the overall circuit configuration, and FIG. 2 is a block diagram showing the detailed circuit configuration of comparator 8 of FIG. 1. 1... Magnetic tape, 2... Drum, 3, 4... Rotating magnetic head, 5... Playback amplifier, 6, 7... Equalizer, 8, 15... Comparator, 8b... Schmitt trigger inverter, 8d... Operational amplifier, 8g to 8j
...Inverter, 9...Envelope detection circuit, 10
...Phase comparator, 11, 18...Adder, 12, 19
...filter, 13...voltage controlled oscillator (VCO),
14...PLL circuit, 16...Relative speed detection circuit, 1
7...PWM signal conversion circuit, 20...driver, 21
... Reel motor, 22, 23... Reel.
Claims (1)
る回転ヘツド型再生装置に用いられるリールモー
タ制御装置において、 位相比較器、フイルタ及び電圧制御発振器から
なり、再生デジタル信号からビツトクロツクを生
成するＰＬＬ回路と、 高速サーチ時に動作し、回転ヘツドと磁気テー
プとの相対速度を検出する相対速度検出回路と、 上記ＰＬＬ回路内の位相比較器の出力と、上記
相対速度検出回路の検出結果に応じて作成した相
対速度誤差電圧とをリールモータ制御系に出力す
る制御手段と を具備したことを特徴とするリールモータ制御装
置。[Claim for Utility Model Registration] A reel motor control device used in a rotary head type playback device that plays back a magnetic tape on which digital signals are recorded, comprising a phase comparator, a filter, and a voltage controlled oscillator, A PLL circuit that generates a PLL circuit, a relative speed detection circuit that operates during high-speed search and detects the relative speed between the rotating head and the magnetic tape, the output of the phase comparator in the PLL circuit, and the detection of the relative speed detection circuit. 1. A reel motor control device comprising: control means for outputting a relative speed error voltage created according to the result to a reel motor control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3384387U JPS63142032U (en) | 1987-03-10 | 1987-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3384387U JPS63142032U (en) | 1987-03-10 | 1987-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63142032U true JPS63142032U (en) | 1988-09-19 |
Family
ID=30841827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3384387U Pending JPS63142032U (en) | 1987-03-10 | 1987-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63142032U (en) |
-
1987
- 1987-03-10 JP JP3384387U patent/JPS63142032U/ja active Pending
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