JPS6412242U - - Google Patents

Info

Publication number
JPS6412242U
JPS6412242U JP1987107983U JP10798387U JPS6412242U JP S6412242 U JPS6412242 U JP S6412242U JP 1987107983 U JP1987107983 U JP 1987107983U JP 10798387 U JP10798387 U JP 10798387U JP S6412242 U JPS6412242 U JP S6412242U
Authority
JP
Japan
Prior art keywords
signal
error signal
phase
drum motor
generating
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
Application number
JP1987107983U
Other languages
Japanese (ja)
Other versions
JPH0614311Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987107983U priority Critical patent/JPH0614311Y2/en
Publication of JPS6412242U publication Critical patent/JPS6412242U/ja
Application granted granted Critical
Publication of JPH0614311Y2 publication Critical patent/JPH0614311Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
  • Control Of Electric Motors In General (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案のドラムサーボ装置のブロツク
図、第２図は従来のドラムサーボ装置のブロツク
図である。 １……ドラムモータ、２……ＦＧアンプ、３…
…速度検出器、４……ＰＧアンプ、５……ヘツド
スイツチングパルス発生回路、６……位相比較器
、７……サーボアンプ、８……モータドライブ回
路、９……平均化回路、１０……レベル比較器、
１１……メモリー、１２……差動増巾器。 FIG. 1 is a block diagram of a drum servo device of the present invention, and FIG. 2 is a block diagram of a conventional drum servo device. 1...Drum motor, 2...FG amplifier, 3...
...Speed detector, 4...PG amplifier, 5...Head switching pulse generation circuit, 6...Phase comparator, 7...Servo amplifier, 8...Motor drive circuit, 9...Averaging circuit, 10... …Level comparator,
11...Memory, 12...Differential amplifier.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドラムモータより出力されるＦＧ信号に基づい
て速度誤差信号を発生する手段と、ドラムモータ
より出力されるＰＧ信号に基づいてヘツドスイツ
チングパルスを発生するヘツドスイツチングパル
ス発生回路と、前記ヘツドスイツチングパルスと
垂直同期信号等の基準信号との位相比較を行ない
、位相誤差信号を発生する位相比較器と、前記位
相誤差信号を数回分平均化して位相の定常偏差量
の検出を行ない定常位相偏差信号を発生する手段
と、前記速度誤差信号及び位相誤差信号をミツク
スした信号と前記定常位相偏差信号とを差動的に
サーボアンプに供給する手段と、前記サーボアン
プの出力により制御されるドラムモータドライブ
回路とからなるドラムサーボ装置。 means for generating a speed error signal based on the FG signal output from the drum motor; a head switching pulse generating circuit for generating a head switching pulse based on the PG signal output from the drum motor; A phase comparator that compares the phase of a pulse with a reference signal such as a vertical synchronization signal and generates a phase error signal, and a steady phase error signal that averages the phase error signal several times to detect a steady phase deviation amount. means for differentially supplying a signal obtained by mixing the speed error signal and the phase error signal and the steady phase deviation signal to a servo amplifier, and a drum motor drive controlled by the output of the servo amplifier. A drum servo device consisting of a circuit.
JP1987107983U 1987-07-14 1987-07-14 Drum servo device Expired - Lifetime JPH0614311Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987107983U JPH0614311Y2 (en) 1987-07-14 1987-07-14 Drum servo device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987107983U JPH0614311Y2 (en) 1987-07-14 1987-07-14 Drum servo device

Publications (2)

Publication Number Publication Date
JPS6412242U true JPS6412242U (en) 1989-01-23
JPH0614311Y2 JPH0614311Y2 (en) 1994-04-13

Family

ID=31342893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987107983U Expired - Lifetime JPH0614311Y2 (en) 1987-07-14 1987-07-14 Drum servo device

Country Status (1)

Country Link
JP (1) JPH0614311Y2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153412A (en) * 1980-04-30 1981-11-27 Matsushita Electric Ind Co Ltd Rotation control device for rotator
JPS61150015A (en) * 1984-12-25 1986-07-08 Fujitsu Ltd Speed control system
JPS61217952A (en) * 1985-03-25 1986-09-27 Toshiba Corp Jitter correcting circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153412A (en) * 1980-04-30 1981-11-27 Matsushita Electric Ind Co Ltd Rotation control device for rotator
JPS61150015A (en) * 1984-12-25 1986-07-08 Fujitsu Ltd Speed control system
JPS61217952A (en) * 1985-03-25 1986-09-27 Toshiba Corp Jitter correcting circuit

Also Published As

Publication number Publication date
JPH0614311Y2 (en) 1994-04-13

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