JPS63105940U - - Google Patents
Info
- Publication number
- JPS63105940U JPS63105940U JP1986202396U JP20239686U JPS63105940U JP S63105940 U JPS63105940 U JP S63105940U JP 1986202396 U JP1986202396 U JP 1986202396U JP 20239686 U JP20239686 U JP 20239686U JP S63105940 U JPS63105940 U JP S63105940U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- drum motor
- outputs
- circuit
- error detection
- 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 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Description
第１図乃至第３図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図の加算回路の詳細な回路構成
を示すブロツク図、第３図は信号ＤＥとスイツチ
の設定状態との対応を示す図、第４図は従来のド
ラムモータ制御装置の構成を示すブロツク図であ
る。
１……磁気テープ、２，３……回転磁気ヘツド
、４……ドラムモータ、５……再生アンプ、６…
…位相比較器、７，２１……フイルタ、８……Ｖ
ＣＯ、９……ＰＬＬ回路、１０，１４……波形整
形回路、１１……速度誤差検出回路、１２，２２
……加算回路、１３……回転同期パルス検出器、
１５……位相誤差検出回路、１６……ドライバ、
２２ａ……レベル検出器、２２ｂ，２２ｃ，２２
ｆ……アンプ、２２ｄ……スイツチ、２２ｅ……
加算器。
Figures 1 to 3 show an embodiment of this invention, with Figure 1 being a block diagram showing the overall circuit configuration, and Figure 2 being a block diagram showing the detailed circuit configuration of the adder circuit in Figure 1. 3 is a diagram showing the correspondence between the signal DE and the setting state of the switch, and FIG. 4 is a block diagram showing the configuration of a conventional drum motor control device. 1... Magnetic tape, 2, 3... Rotating magnetic head, 4... Drum motor, 5... Playback amplifier, 6...
...Phase comparator, 7, 21...Filter, 8...V
CO, 9... PLL circuit, 10, 14... Waveform shaping circuit, 11... Speed error detection circuit, 12, 22
... Addition circuit, 13 ... Rotation synchronous pulse detector,
15... Phase error detection circuit, 16... Driver,
22a...Level detector, 22b, 22c, 22
f...Amplifier, 22d...Switch, 22e...
Adder.
Claims (1)
る回転ヘツド型再生装置に用いられるドラムモー
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
成り、再生デジタル信号からビツトクロツクを作
成するＰＬＬ回路と、 ドラムモータの回転位相と基準位相とを比較し
て位相誤差信号を出力する位相誤差検出回路と、 この位相誤差検出回路より出力される位相誤差
信号と上記ＰＬＬ回路内の位相比較器の出力とを
加算する第１の加算回路と、 上記ドラムモータの回転速度を検出し速度誤差
信号を出力する速度誤差検出回路と、 上記加算回路の加算出力と上記速度誤差検出回
路の速度誤差信号とを加算して上記ドラムモータ
を駆動する駆動回路に出力する第２の加算回路と
、を具備したことを特徴とするドラムモータ制御
装置。[Claim for Utility Model Registration] A drum motor control device used in a rotary head type playback device that plays back a magnetic tape on which digital signals are recorded, which comprises a phase comparator, a filter, and a voltage controlled oscillator, A phase error detection circuit that compares the rotational phase of the drum motor with a reference phase and outputs a phase error signal; and a phase error detection circuit that outputs a phase error signal by comparing the rotational phase of the drum motor with a reference phase; a first addition circuit that adds the output of the phase comparator; a speed error detection circuit that detects the rotation speed of the drum motor and outputs a speed error signal; and a first addition circuit that adds the output of the addition circuit and the output of the speed error detection circuit; A drum motor control device comprising: a second addition circuit that adds the speed error signal and outputs the sum to a drive circuit that drives the drum motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986202396U JPH0544908Y2 (en) | 1986-12-25 | 1986-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986202396U JPH0544908Y2 (en) | 1986-12-25 | 1986-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63105940U true JPS63105940U (en) | 1988-07-08 |
| JPH0544908Y2 JPH0544908Y2 (en) | 1993-11-16 |
Family
ID=31166737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986202396U Expired - Lifetime JPH0544908Y2 (en) | 1986-12-25 | 1986-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544908Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321887A (en) * | 1988-06-21 | 1989-12-27 | Canon Inc | Rotation controller |
-
1986
- 1986-12-25 JP JP1986202396U patent/JPH0544908Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321887A (en) * | 1988-06-21 | 1989-12-27 | Canon Inc | Rotation controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544908Y2 (en) | 1993-11-16 |
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