JPS59198555A - Drum motor controller - Google Patents
Drum motor controllerInfo
- Publication number
- JPS59198555A JPS59198555A JP58071146A JP7114683A JPS59198555A JP S59198555 A JPS59198555 A JP S59198555A JP 58071146 A JP58071146 A JP 58071146A JP 7114683 A JP7114683 A JP 7114683A JP S59198555 A JPS59198555 A JP S59198555A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- phase comparison
- drum motor
- phase
- digital counter
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
- G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads
- G11B15/4731—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation
- G11B15/4733—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation with provision for information tracking, e.g. for time base correction
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はドラムモータ制御装置に係り、垂直同期信号を
分周して得た４５Ｈｚの位相比較用信号を用い、ドラム
モータを高精度に制御し得るドラムモータ制御装置を提
供することを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum motor control device, which can control a drum motor with high precision using a 45Hz phase comparison signal obtained by dividing a vertical synchronization signal. The purpose is to provide.
本出願人は先に、特願昭５７−２０２６００号特許出願
「磁気記録再生装置」等にて、回転ドラムに２７０°強
の角度に亘って添接巻回された磁気テープに回転ドラム
に９０°の等角度間隔で取付けられた４個のビデオヘッ
ドにより映像信号を記録し、再生する装置を提供した。The present applicant previously applied for a patent application No. 57-202600 titled ``Magnetic Recording and Reproducing Device,'' etc., in which a magnetic tape was spliced and wound around a rotating drum over an angle of just over 270 degrees. An apparatus for recording and reproducing video signals using four video heads installed at equal angular intervals of .degree. is provided.
このものの回転ドラムの径は、現行の２ヘッド方式の装
置のそれの２／３に設定されているので小形化し得、現
行の装置と互換性を持たせるように（っまり現行の装＠
（又は本出願人が先に提案した装置）で記録された信号
を本出願人が先に提案した装置（又は現行の装置）でそ
のまま再生し得るように）、回転ドラムを現行の装置に
おける回転周波数３０Ｈｚに対して４５Ｈｚの回転周波
数で回転する１ｆｆｆ成とされている。The diameter of the rotating drum of this device is set to 2/3 of that of the current two-head type device, so it can be made smaller and compatible with the current device (in other words, the current device
(or the device previously proposed by the applicant) can be reproduced as is by the device previously proposed by the applicant (or the current device). It has a 1fff configuration that rotates at a rotational frequency of 45Hz with respect to a frequency of 30Hz.
第１図は本出願人が先に提案した装置の回転ドラムサー
ボ回路の一例のブロック系統図を示す。FIG. 1 shows a block diagram of an example of a rotating drum servo circuit of a device previously proposed by the present applicant.
端子１に入来した映像信号は垂直同期信号分離回路２に
て垂直同期信号（６０Ｈｚ ）を分離され、１ｚ４分周
器３にて１５Ｈｚの位相比較用信号とされて一位相比較
器４に供給される。The video signal input to terminal 1 is separated into a vertical synchronization signal (60Hz) by vertical synchronization signal separation circuit 2, converted into a 15Hz phase comparison signal by 1z4 frequency divider 3, and supplied to one-phase comparator 4. be done.
一方、ドラムモータ６からの回転パルス（４５１」ｌ）
は１ｚ３分周器７にて１５１−１ｚの位相比較用信号と
されて位相比較器４に供給され、ここで１ｚ４分周器３
からの信号と位相比較される。この位相比較により位相
比較誤差信号が取出されてモータ駆動回路５に供給され
、ドラムモータ６を一定速喚で回転するように制御する
。On the other hand, the rotation pulse (451"l) from the drum motor 6
is converted into a phase comparison signal of 151-1z by the 1z3 frequency divider 7, and is supplied to the phase comparator 4, where the 1z4 frequency divider 3
The phase is compared with the signal from As a result of this phase comparison, a phase comparison error signal is extracted and supplied to the motor drive circuit 5, which controls the drum motor 6 to rotate at a constant speed.
然るにこの回路は、位相比較用信号として１５Ｈｚとい
う比較的低い周波数の信号を用いているため、高精度に
サーボをかけ得す、この結果として回転むらを生じ、両
揺れを生じるおそれがある問題点があった。However, since this circuit uses a relatively low frequency signal of 15 Hz as a phase comparison signal, the servo cannot be applied with high precision, resulting in uneven rotation and the possibility of double wobbling. was there.
本発明は上記問題点に解決したものであり、第２図以下
と共にその各実施例について説明する。The present invention solves the above problems, and each embodiment thereof will be described with reference to FIG. 2 and the following figures.
第２図は本発明になるドラムモータ制御装置の第１実施
例のブロック系統図を示す。同図中、８はテレビジョン
カメラに設けられている信号発生装置で、水晶発振器９
からの信号は例えば１ｚ４分周器１０にて３．５８ＭＨ
ｚの色副搬送波とされた後ＶＴＲ側に設けられたデジタ
ルカウンタ１１にクロック信号ＣＬとして供給される一
方、垂直同期信号発生器１２にて６０Ｈ２の垂直同期信
号とされた後ＶＴＲ側に設けられた１ｚ４分周器１３に
て１５Ｈｚの信号とされ、デジタルカウンタ１１にリセ
ット信号ＲＴとして供給される。FIG. 2 shows a block system diagram of a first embodiment of the drum motor control device according to the present invention. In the figure, 8 is a signal generator installed in the television camera, and a crystal oscillator 9
For example, the signal from
After being converted into a 60H2 vertical synchronization signal by a vertical synchronization signal generator 12, it is supplied as a clock signal CL to a digital counter 11 provided on the VTR side after being converted into a 60H2 vertical synchronization signal. The signal is converted into a 15 Hz signal by the 1z4 frequency divider 13, and is supplied to the digital counter 11 as a reset signal RT.
デジタルカウンタ１１は３．５８ＭＨ２のクロック信号
をカウントダウンし、１５Ｈｚのリセット信号でカウン
トリセットされて４５ Ｈｚの位相比較用信号を出力す
る。この４５Ｈｚの位相比較用信号はドラムモータサー
ボ回路１５の位相比較器１４に供給される。The digital counter 11 counts down a 3.58 MH2 clock signal, is reset by a 15 Hz reset signal, and outputs a 45 Hz phase comparison signal. This 45 Hz phase comparison signal is supplied to the phase comparator 14 of the drum motor servo circuit 15.
一方、ドラムモータ６からの回転パルス（４５Ｈ７）は
そのまま位相比較用信号とされて位相比較器１４に供給
され、ここで、デジタルカウンタ１１からの信号と位相
比較される。この位相比較により位相比較誤差信号が取
出されてモータ駆動回路５に供給され、ドラムモータ６
を一定速度で回転するように制御する。On the other hand, the rotation pulse (45H7) from the drum motor 6 is directly converted into a phase comparison signal and supplied to the phase comparator 14, where the phase is compared with the signal from the digital counter 11. Through this phase comparison, a phase comparison error signal is extracted and supplied to the motor drive circuit 5, which drives the drum motor 6.
control to rotate at a constant speed.
この位相比較の際、位相比較用信号は色副搬送波（３，
５８ＭＨｚ ）から得た４５Ｈ２を用いているため、第
１図示の装置に比して位相比較精度を向上し得、高精度
にサーボをかけ得る。During this phase comparison, the phase comparison signal is the color subcarrier (3,
Since 45H2 obtained from 58MHz) is used, the phase comparison accuracy can be improved compared to the device shown in the first figure, and servo can be applied with high precision.
第３図は本発明装置の第２実施例のブロック系統図を示
し、同図中、第１図及び第２図と同一構成部分には同一
番号を付してその説明を省略する。FIG. 3 shows a block system diagram of a second embodiment of the apparatus of the present invention, and in the figure, the same components as those in FIGS. 1 and 2 are given the same numbers and their explanations will be omitted.
第３図中、位相比較器１９．ＶＣＯ１６，分周器１７に
てＰＬＬが構成されており、位相比較器１９は、ＶＣＯ
１６の出力発振周波数（例えば４５ｋｌ−１ｚ）を分周
器１７にて分周されて１５ＨＺとされた信号と、分周器
３からの１５Ｈｚの信号とを位相比較してその位相比較
誤差電圧でＶ６Ｏ１３の出力発振周波数を制御する構成
とされている。In FIG. 3, phase comparator 19. A PLL is configured by the VCO 16 and the frequency divider 17, and the phase comparator 19
16 output oscillation frequency (for example, 45kl-1z) is divided by frequency divider 17 to 15Hz, and the phase of the signal is compared with the 15Hz signal from frequency divider 3, and the phase comparison error voltage is used. It is configured to control the output oscillation frequency of V6O13.
ＶＯＣｌ２の出力発振周波数４５ｋＨ２はデジタルカウ
ンタ１１にクロック信号として供給される。デジタルカ
ウンタ１１は分周器３がらの１５１−（ｚをリセット信
号として４５Ｈｚの信号を出力する。第２図示の装置、
の如く、デジタルカウンタ１１からの４５Ｈ７の位相比
較用信号により、以下、第２図示の装置と同様に位相比
較が行なわれてドラムモータ６が駆動制御される。The output oscillation frequency 45kHz2 of VOCl2 is supplied to the digital counter 11 as a clock signal. The digital counter 11 outputs a 45Hz signal using 151-(z of the frequency divider 3 as a reset signal.The device shown in the second figure,
As shown in FIG. 2, the phase comparison signal 45H7 from the digital counter 11 is used to perform phase comparison and drive control of the drum motor 6 in the same way as in the device shown in the second figure.
上述の如く、本発明になるドラムモータ制御装置は、垂
直同期信号を３ｚ４分周して４５Ｈｚの信号を得これと
ドラムモータの回転に応じた周波数の信号とを位相比較
して位相比較誤差信号を畳、これをモータ駆動手段に供
給してドラムモータを４５ ｒｐｓで回転させるように
しているため、１５Ｈｚの信号どうしを位相比較して得
た位相比較誤差信号を用いてモータ制御してた装置に比
して３倍精度よくサーボをかけ得、回転むらなく、従っ
て画揺れのない高精度の画像を得ることができる等の特
長を有する。As described above, the drum motor control device according to the present invention divides the vertical synchronization signal by 3x4 to obtain a 45Hz signal, compares the phase of this signal with a signal having a frequency corresponding to the rotation of the drum motor, and generates a phase comparison error signal. This device controls the motor using a phase comparison error signal obtained by comparing the phases of 15Hz signals. It has features such as being able to apply servo with three times more precision than the previous model, and being able to obtain highly accurate images with no uneven rotation and no image shaking.
第１図は本出願人が先に提案した装置のブロック系統図
、第２図及び第３図は夫々本発明装置の第１及び第２実
施例のブロック系統図である。
１・・・映像信号入力端子、２・・・垂直同期信号分離
回路、３，１０．１３・・・１７４分周期、５・・・モ
ータ駆動回路、６・・・ドラムモータ、８・・・信号発
生装置、９・・・水晶発振器、１１・・・デジタルカウ
ンタ、１２・・・垂直同期信号発生器、１４．１９・・
・位相比較器、１６・・・ＶＯＣ，１７・・・分周器。FIG. 1 is a block system diagram of an apparatus previously proposed by the present applicant, and FIGS. 2 and 3 are block system diagrams of first and second embodiments of the apparatus of the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Video signal input terminal, 2... Vertical synchronization signal separation circuit, 3, 10.13... 174 minute cycle, 5... Motor drive circuit, 6... Drum motor, 8... Signal generator, 9...Crystal oscillator, 11...Digital counter, 12...Vertical synchronization signal generator, 14.19...
- Phase comparator, 16...VOC, 17... Frequency divider.
Claims (3)
相比較用信号を得る分周手段と、ドラムモータの回転に
応じた周波数の信号と該分周手段からの位相比較用信号
とを位相比較して位相比較誤差信号を得て該モータを４
５ ｒｐｓで回転させるドラムモータ駆動手段とよりな
ることを特徴とするドラムモータ制御装置。(1) Frequency dividing means for obtaining a 4'5H7 phase comparison signal obtained by dividing the vertical synchronization signal by 3z4, and a signal having a frequency corresponding to the rotation of the drum motor and the phase comparison signal from the frequency dividing means. Compare the phases to obtain a phase comparison error signal and drive the motor to 4.
1. A drum motor control device comprising: a drum motor drive means for rotating at a speed of 5 rps.
生装置から得られる色副搬送波を入力クロックとされ該
垂直同期信号を分周した１５１−１ｚの信号でリセット
されるデジタルカウンタで構成されてなることを特徴と
する特許請求の範囲第１項記載のドラムモータ制御装置
。(2) The frequency dividing means is composed of a digital counter which is reset by a 151-1z signal obtained by frequency-dividing the vertical synchronization signal and whose input clock is a color subcarrier obtained from a signal generator of a television camera. A drum motor control device according to claim 1, characterized in that:
力とするＰ’ＬＬの出力を入力クロックとされ該垂直同
期信号を分周した信号でリセットされるデジタルカウン
タで構成されてなることを特徴とする特許請求の範囲第
１項記載のドラムモータ制御装置。(3) The frequency dividing means is composed of a digital counter whose input clock is the output of P'LL which receives a signal obtained by dividing the vertical synchronizing signal, and is reset by the signal obtained by dividing the vertical synchronizing signal. A drum motor control device according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58071146A JPS59198555A (en) | 1983-04-22 | 1983-04-22 | Drum motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58071146A JPS59198555A (en) | 1983-04-22 | 1983-04-22 | Drum motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59198555A true JPS59198555A (en) | 1984-11-10 |
Family
ID=13452162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58071146A Pending JPS59198555A (en) | 1983-04-22 | 1983-04-22 | Drum motor controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59198555A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62144209A (en) * | 1985-12-18 | 1987-06-27 | Matsushita Electric Ind Co Ltd | Digital phase comparison method |
| US4764824A (en) * | 1985-03-25 | 1988-08-16 | Sony Corporation | Dual servo system for rotating tape head control |
| JPS641492A (en) * | 1987-06-23 | 1989-01-05 | Sony Corp | Rotary phase controller |
-
1983
- 1983-04-22 JP JP58071146A patent/JPS59198555A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764824A (en) * | 1985-03-25 | 1988-08-16 | Sony Corporation | Dual servo system for rotating tape head control |
| JPS62144209A (en) * | 1985-12-18 | 1987-06-27 | Matsushita Electric Ind Co Ltd | Digital phase comparison method |
| JPS641492A (en) * | 1987-06-23 | 1989-01-05 | Sony Corp | Rotary phase controller |
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