KR960706165A - MAGNETIC RECORDING / REPRODUCING APPARATUS HAVING HIGH-SPEED REPRODUCTION MODE - Google Patents

MAGNETIC RECORDING / REPRODUCING APPARATUS HAVING HIGH-SPEED REPRODUCTION MODE

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Publication number
KR960706165A
KR960706165A KR1019960702787A KR19960702787A KR960706165A KR 960706165 A KR960706165 A KR 960706165A KR 1019960702787 A KR1019960702787 A KR 1019960702787A KR 19960702787 A KR19960702787 A KR 19960702787A KR 960706165 A KR960706165 A KR 960706165A
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KR
South Korea
Prior art keywords
signal
mark
reproducing
tracking error
recording
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KR1019960702787A
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Korean (ko)
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KR100233202B1 (en
Inventor
나오즈미 스기무라
하루시게 나까가끼
야스노리 오하라
노부따까 아마다
다까오 아라이
마사또 사노
Original Assignee
가나이 쯔또무
가부시끼가이샤 히다찌세이사꾸쇼
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Priority claimed from JP6236436A external-priority patent/JPH08102109A/en
Priority claimed from JP6319775A external-priority patent/JP3060864B2/en
Priority claimed from JP10343095A external-priority patent/JP3261920B2/en
Application filed by 가나이 쯔또무, 가부시끼가이샤 히다찌세이사꾸쇼 filed Critical 가나이 쯔또무
Publication of KR960706165A publication Critical patent/KR960706165A/en
Application granted granted Critical
Publication of KR100233202B1 publication Critical patent/KR100233202B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • 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
    • 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
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • 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
    • G11B15/4673—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 tape while the head is rotating
    • G11B15/4675—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 tape while the head is rotating with provision for information tracking
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
    • G11B27/324—Duty cycle modulation of control pulses, e.g. VHS-CTL-coding systems, RAPID-time code, VASS- or VISS-cue signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G11B2220/91—Helical scan format, wherein tracks are slightly tilted with respect to tape direction, e.g. VHS, DAT, DVC, AIT or exabyte

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

디지탈 영상 신호를 회전 자기헤드를 사용해서 기록/재생을 실생하는 디지탈 VTR에 관한 것으로서, 회전헤드에 의해 신호를 자기 테이프상에 기록하는 기록장치와 표준 데이프속도로 신호를 재생하는 표준 재생모드 및 이 표준 테이프속도보다 빠른 소정의 테이프 속도로 신호를 재생하는 고속재생모드를 가진 재생장치를 구비한 자기기록 재생장치로서, 기록신호 처리부는 고속재생 모드로 재생되는 디지탈 신호의 데이타를 여러개의 소정의 트랙의 소정위치로 분산해서 기록되도록 기록할 디지탈 신호를 처리하며, 고속재생 모드시에는 고속재생용의 데이타가 회전헤드의 자기 테이프상의 주사궤적을 따르는 위치에 배치되도록 기록되고, 마크 부가부는 고속재생 모드로 재생되는 디지탈신호 데이타가 기록되어 있는 트랙위치에 대응한 마크를 생성해서 제어신호에 부가하고, 제어헤드는 기록장치에 의한 신호의 기록시에 각 트랙위치에 대응해서 상기 마크신호가 부가된 제어 신호를 상기 자기 테이프에 기록하고 또한 재생장치에 의한 신호의 재생시에 마크가 부가된 제어신호를 재생하며, 마크 검출부는 재생된 제어신호에서 마크를 검출하고, 위상 비교부는 마크와 회전헤드의 회전과 동기한 기준신호와의 위상차를 검출하고, 캡스턴 서보부는 위상차가 소정의 기준값으로 되도록 자기 테이프의 주행속도를 제어한다.A digital VTR for recording / reproducing digital video signals using a rotating magnetic head, comprising: a recording device for recording signals on a magnetic tape by a rotating head; and a standard reproducing mode for reproducing signals at a standard tape speed. A magnetic recording and reproducing apparatus having a reproducing apparatus having a high speed reproducing mode for reproducing a signal at a predetermined tape speed higher than a standard tape speed, wherein the recording signal processing unit records data of a digital signal reproduced in the high speed reproducing mode in a plurality of predetermined tracks. The digital signal to be recorded is distributed so as to be distributed to be recorded at a predetermined position, and in the high speed reproduction mode, data for high speed reproduction is recorded so as to be disposed at a position along the scanning trace on the magnetic tape of the rotating head, and the mark appending portion Mark corresponding to the track position at which digital signal data to be reproduced is recorded To the control signal, the control head records the control signal to which the mark signal is added corresponding to each track position at the time of recording the signal by the recording apparatus on the magnetic tape, and at the time of reproducing the signal by the playback apparatus. Reproduces the added control signal, the mark detector detects the mark from the reproduced control signal, the phase comparator detects the phase difference between the mark and the reference signal synchronized with the rotation of the rotating head, and the capstan servo part has a predetermined phase difference. The running speed of the magnetic tape is controlled to be a reference value.

이러한 구성에 의해 호환재생이 가능하고 또한 안정하며 고정밀도인 트랙킹 제어장치를 실현할 수 있다.By such a configuration, it is possible to realize a compatible and controllable, stable and high precision tracking control device.

Description

고속재생모드를 갖는 자기기록 재생장치(MAGNETIC RECORDING/REPRODUCING APPARATUS HAVING HIGH-SPEED REPRODUCTION MODE)MAGNETIC RECORDING / REPRODUCING APPARATUS HAVING HIGH-SPEED REPRODUCTION MODE

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 자기기록 재생장치의 일실시예의 블럭도이다, 제2도는 마크 부가부의 구체적인 구성을 도시한 블럭도이다, 제3도는 마크 부가부의 동작을 설명하기 위한 파형 타이밍도, 제4도는 고속재생 모드로 재생되는 트랙의 기록패턴을 나타낸다, 제5도는 마크 검출부의 구체적인 구성을 도시한 블럭도.FIG. 1 is a block diagram of one embodiment of a magnetic recording and reproducing apparatus according to the present invention. FIG. 2 is a block diagram showing a specific configuration of a mark adding portion. FIG. 3 is a waveform timing diagram for explaining the operation of the mark adding portion. 4 shows a recording pattern of a track reproduced in the high speed reproduction mode, and FIG. 5 is a block diagram showing a specific configuration of the mark detection unit.

Claims (11)

회전헤드에 의해 신호를 자기 테이프상에 기록하는 기록장치와 표준 테이프속도로 신호를 재생하는 표준 재생모드 및 이 표준 데이프속도보다 빠른 소정의 테이프속도로 신호를 재생하는 고속재생모드를 가진 재생장치를 구비한 자기기록 재생장치로서, 상기 고속재생 모드로 재생되는 디지탈 신호의 데이타를 여러개의 소정의 트랙의 소정위치로 분산해서 기록되도록 기록할 디지탈 신호를 처리하며, 고속 재생 모드시에는 상기 고속재생용의 데이타가 상기 회전 헤드의 상기 자기 테이프상의 주사궤적을 따르는 위치에 배치되도록 기록되는 기록 신호 처리수단, 상기 고속 재생 모드로 재생되는 디지탈신호 데이타가 기록되어 있는 트랙위치에 대응한 마크를 생성해서 제어신호에 부가하는 제어신호 마크 부가수단, 상기 기록장치에 의한 신호의 기록시에 각 트랙위치에 대응해서 상기 마크신호가 부가된제어신호를 상기 자기테이프에 기록하고 또한 상기 재생장치에 의한 신호의 재생시에 상기 마크가 부가된 제어신호를 재생하는 제어헤드, 재생된 상기 제어신호에서 상기 마크를 검출하는 마크 검출수단, 상기 마크와 상기 회전헤드의 회전과 동기한 기준시호와의 위상차를 검출하는 위상비교수단 및 상기 위상차가 소정의 기준값으로 되도록 상기 자기 테이프의 주행속도를 제어하는 캡스턴 서보수단을 갖는 자기기록 재생장치.A recording apparatus for recording signals on a magnetic tape by a rotating head, a standard playback mode for reproducing signals at a standard tape speed, and a high speed playback mode for reproducing signals at a predetermined tape speed faster than this standard tape speed. A magnetic recording and reproducing apparatus, comprising: processing a digital signal to be recorded so that data of a digital signal reproduced in the fast reproducing mode is distributed and recorded to a predetermined position of a plurality of predetermined tracks; Recording signal processing means recorded so that the data of the rotating head is disposed at a position along the scanning trajectory on the magnetic tape of the rotating head, and generating and controlling a mark corresponding to the track position at which the digital signal data reproduced in the high speed reproduction mode is recorded. Control signal mark adding means added to the signal, and the signal of the signal by the recording apparatus A control head for recording a control signal with the mark signal corresponding to each track position to the proxy on the magnetic tape and reproducing the control signal with the mark upon reproducing the signal by the reproducing apparatus, the reproduced control Mark detection means for detecting the mark in a signal, phase comparison means for detecting a phase difference between the mark and a reference signal synchronized with the rotation of the rotary head, and controlling the traveling speed of the magnetic tape so that the phase difference becomes a predetermined reference value A magnetic recording and reproducing apparatus having a capstan servo means. 제1항에 있어서, 상기 마크 부가수단은 하나 또는 연속하는 여러개의 제어신호의 듀티비를 변경해서 상기 마크를 생성하거나 또는 하나 또는 연속하는 여러개의 제어신호의 하이레벨구간과 로우레벨구간 중 어느 하나의 구간을 펄스폭 변조하는 것에 의해 기록마크를 생성하는 자기기록 재생장치.The method of claim 1, wherein the mark adding means changes the duty ratio of one or more control signals to generate the mark, or any one of a high level section and a low level section of one or more control signals. A magnetic recording and reproducing apparatus for generating a recording mark by pulse-width modulating a section of?. 제1항에 있어서, 상기 고속재생 모드시에 상기 고속재생 모드로 재생되는 디지탈신호 데이타가 기록되어 있는 트랙과 회전헤드의 실제의 주사궤적과의 어긋남을 나타내는 트랙킹 오차를 검출하는 수단 및 상기 트랙킹 오차가 없어지도록 상기 위상비교수단에 의해 검출한 상기 마크 또는 상기 기준신호의 위상을 변겅하거나 또는 상기 위상차를 변경하는 위상조정수단을 또 갖는 가지기록 재생장치.The tracking error according to claim 1, wherein the tracking error indicates a tracking error indicating a deviation between the track in which the digital signal data reproduced in the high speed reproduction mode and the actual scan trajectory of the rotating head is recorded in the high speed reproduction mode. And a phase adjusting means for changing the phase or changing the phase difference of the mark or the reference signal detected by the phase comparing means such that the phase disappears. 제3항에 있어서, 상기 마크 부가수단은 하나 또는 연속하는 여러개의 제어신호의 듀티비를 변경해서 상기 마크를 생성하거나 또는 하나 또는 연속하는 여러개의 제어신호의 하이레벨구간과 로우레벨구간 중 어느 하나의 구간을 펄스폭 변조하는 것에 의해 상기 마크를 생성하는 자기기록 재생장치.The method of claim 3, wherein the mark adding means changes the duty ratio of one or more control signals to generate the mark, or any one of a high level section and a low level section of one or more control signals. A magnetic recording and reproducing apparatus for generating the mark by pulse-width modulating a section of. 제3항에 있어서, 상기 트랙의 각각은 여러개의 데이타블럭으로 구성되고, 상기 디지탈 신호는 상기 여러개의 데이타 블럭으로 분산해서 기록되고, 각각의 데이타 블럭에는 주정보신호와 트랙번호 및 데이타 블럭번호를 나타낸 식별정보를 포함하는 부정보신호가 기록되어 있고, 상기 트랙킹 오차검출수단은 상기 고속재생 모드로 재생되는 디지탈 신호 데이타가 기록되어 있는 특정 트랙의 트랙번호와 상기 특정트랙을 주사했을 때에 검출될 기준데이타 블럭번호를 나타낸 데이타 테이블을 저장하는 기억수단을 갖고, 상기 트랙킹 오차검출수단은 상기 고속재생 모드에 있어서 상기 회전해드가 상기 마크에 대응하는 하나 또는 그 이상의 상기 특정트랙을 실제로 주사했을 때에 재생된 상기 부신호중의 데이타 블럭번호와 상기 데이타 테이블에 나타난 기준 데이타 블럭번호와 차를 검출하고, 이 차에 따른 상기 트랙킹 오차신호를 생성하는 자기기록 재생장치.4. The apparatus of claim 3, wherein each of the tracks comprises a plurality of data blocks, and the digital signals are distributed and recorded in the plurality of data blocks, and each data block includes a main information signal, a track number, and a data block number. The sub-information signal including the identification information indicated is recorded, and the tracking error detecting means is a reference to be detected when the track number of the specific track on which the digital signal data reproduced in the fast playback mode is recorded and the specific track are scanned. Storage means for storing a data table indicating a data block number, wherein said tracking error detecting means is reproduced when said rotating head actually scans one or more said specific tracks corresponding to said mark in said fast playback mode; Data block number in the sub-signals and appear in the data table A magnetic recording and reproducing apparatus for detecting a difference with a reference data block number and generating the tracking error signal according to the difference. 제3항에 있어서, 상기 트랙의 각각은 여러개의 데이타 블럭으로 구성되고, 상기 디지탈 신호는 상기 여러개의 데이타블럭으로 분산해서 기록되고, 각각의 데이타 블럭에는 주정보신호와 트랙번호 및 데이타 블럭번호를 나타낸 식별정보를 포함하는 부정보신호가 기록되어 있고, 상기 트랙킹 오차검출수단은 상기 고속재생 모드로 재생되는 디지탈 신호 데이타가 기록되어 있는 특정 트랙의 트랙번호와 상기 특정트랙을 주사개시부터 소정의 트랙을 검출할 때까지의 기준시간과의 관계를 나타낸 데이타 테이블을 저장하는 기억수단과 트랙의 주사개시시부터의 시간을 측정하는 타이머를 갖고, 상기 트랙킹 오차검출수단은 상기 고속재생 모드에 있어서 상기 회전헤드가 상기 마크에 대응하는 하나 또는 그 이상의 상기 특정트랙을 실제로 주사하고 나서 소정의 트랙을 검출할 때까지의 실시간을 상기 타이머를 사용해서 검출하고, 상기 데이타 테이블에 나타난 기준시간과 검출한 상기 실시간의 차를 검출하고, 이 차에 따른 상기 트랙킹 오차신호를 생성하는 자기기록 재생장치.4. The track of claim 3, wherein each of the tracks comprises a plurality of data blocks, and the digital signals are distributed and recorded in the plurality of data blocks, and each data block includes a main information signal, a track number, and a data block number. The sub-information signal including the identification information indicated therein is recorded, and the tracking error detecting means records the track number of the specific track on which the digital signal data reproduced in the fast playback mode and the specified track from the start of scanning the specific track. Has a storage means for storing a data table indicating a relationship with a reference time until detection of a signal and a timer for measuring the time from the start of scanning of the track, wherein the tracking error detecting means is adapted to rotate in the fast reproducing mode. The head actually scans one or more of the specific tracks corresponding to the mark; Magnetic recording which detects the real time until a predetermined track is detected using the timer, detects the difference between the reference time indicated in the data table and the detected real time, and generates the tracking error signal according to the difference. Playback device. 제3항에 있어서, 상기 위상조정수단은 상기 트랙킹 오차검출수단이 생성한 상기 트랙킹 오차신호에 따라서 상기 차가 0으로 되는 방향으로 상기 마크의 위상과 상기 기준신호의 위상 중 어느 하나를 조정하거나 또는 상기 위상차 검출수단으로부터의 상기 위상차의 값으로 변경을 부가하는 자기기록 재생장치.The method of claim 3, wherein the phase adjusting means adjusts any one of a phase of the mark and a phase of the reference signal in a direction in which the difference becomes zero according to the tracking error signal generated by the tracking error detecting means. And a change in the value of the phase difference from the phase difference detecting means. 제1항에 있어서, 고속재생 모드에 있어서 상기 자기 테이프를 상기 표준속도 보다 빠른 상기 소정의 속도로 주행시키는 고속주행 제어수단, 상기 고속재생 모드시에 상기 고속재생 모드로 재생되는 디지탈 신호 데이타가 기록되어 있는 트랙과 회전헤드의 실제의 주사궤적과의 어긋남을 나타내는 트래킹 오차를 검출하는 수단, 제어신호에 따라서 상기 위상비교수단으로부터의 상기 위상차와 상기 트랙킹 오차검출수단으로부터의 상기 트랙킹 오차 중 어느 한 쪽을 선택적으로 출력하는 전환수단, 상기 고속재생 모드에 있어서, 상기 자기테이프가 상기 소정의 속도에 도달했을 때에 상기 전환수단이 상기 위상비교수단으로부터의 상기 위상차를 선택하고, 상기 위상차가 소정의 범위에 도달했을 때에 상기 전환수단이 상기 트랙킹 오차검출수단으로부터의 상기 트랙킹오차를 선택하도록 상기 제어신호를 발생하는 제어수단을 갖고, 상기 켑스턴 서보수단은 상기 전환수단으로부터의 출력에 따라서 상기 위상차가 소정의 기준값으로 되거나 또는 상기 트랙킹 오차가 0으로 되도록 상기 자기 테이프의 주행속도를 제어하는 자기기록 재생장치.The high speed playback control means for driving the magnetic tape at the predetermined speed faster than the standard speed in the high speed playback mode, and digital signal data reproduced in the high speed playback mode in the high speed playback mode is recorded. Means for detecting a tracking error indicative of a deviation of the actual track of the track and the rotating head, and either of the phase difference from the phase comparing means and the tracking error from the tracking error detecting means in accordance with a control signal. Switching means for selectively outputting? In the fast reproducing mode, the switching means selects the phase difference from the phase comparing means when the magnetic tape reaches the predetermined speed, and the phase difference falls within a predetermined range. When the switching means reaches the tracking error detecting means, Control means for generating the control signal so as to select the tracking error of the controller, wherein the Paxton servo means is configured such that the phase difference becomes a predetermined reference value or the tracking error becomes zero according to the output from the switching means. Magnetic recording and reproducing apparatus for controlling the traveling speed of the magnetic tape. 제8항에 있어서, 상기 마크 부가수단은 하나 또는 연속하는 여러개의 제어신호의 듀티비를 변경해서 상기 마크를 생성하거나 또는 하나 또는 연속하는 여러개의 제어신호의 하이레벨구간과 로우레벨구간 중 어느 하나의 구간을 펄스폭 변조하는 것에 의해 상기 마크를 생성하는 자기기록 재생장치.9. The apparatus of claim 8, wherein the mark adding means changes the duty ratio of one or more control signals to generate the mark, or any one of a high level section and a low level section of one or more control signals. A magnetic recording and reproducing apparatus for generating the mark by pulse-width modulating a section of. 제8항에 있어서, 상기 고속재생 모드에 있어서 상기 켑스턴 서보수단이 상기 자기 테이프의 주행속도를 제어할 때의 제어덤핑계수를 조정하는 수단을 또 갖고, 상기 덤핑계수 조정수단은 상기 위상비교수단으로부터의 위상차가 소정값으로 도달할 때까지의 동안은 제1의 덤핑계수를 사용하고, 상기 위상비교수단으로부터의 위상차가 소정값에 도달한 후는 상기 제1의 덤핑계수보다 큰 제2의 덤핑계수를 사용하는 자기기록 재생장치.9. The method according to claim 8, further comprising means for adjusting a control dumping coefficient when said thxton servo means controls the traveling speed of said magnetic tape in said high speed reproducing mode, and said dumping coefficient adjusting means includes said phase comparing means. The first dumping coefficient is used until the phase difference from the phase difference reaches a predetermined value, and the second dumping is larger than the first dumping coefficient after the phase difference from the phase comparing means reaches a predetermined value. Magnetic recording and reproducing apparatus using coefficients. 제10항에 있어서, 상기 마크 부가수단은 하나 또는 연속하는 여러개의 제어신호의 듀티비를 변경해서 상기 마크를 생성하거나 또는 하나 또는 연속하는 여러개의 제어신호의 하이레벨구간과 로우레벨구간 중 어느 하나의 구간을 펄스폭 변조하는 것에 의해 상기 마크를 생성하는 자기기록 재생장치.11. The apparatus of claim 10, wherein the mark adding means changes the duty ratio of one or more control signals to generate the mark, or one of a high level section and a low level section of one or more control signals. A magnetic recording and reproducing apparatus for generating the mark by pulse-width modulating a section of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960702787A 1994-09-30 1995-09-29 Magnetic recording/reproducing device having high-speed reproduction mode KR100233202B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP6236436A JPH08102109A (en) 1994-09-30 1994-09-30 Tracking controller
JP94-236436 1994-09-30
JP94-319775 1994-12-22
JP6319775A JP3060864B2 (en) 1994-12-22 1994-12-22 Tracking control device
JP10343095A JP3261920B2 (en) 1995-04-27 1995-04-27 Digital signal recording / reproducing device, digital signal recording device, and tracking control device
JP95-103430 1995-04-27
PCT/JP1995/001991 WO1996010822A1 (en) 1994-09-30 1995-09-29 Magnetic recording/reproducing device having high-speed reproduction mode

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KR100233202B1 KR100233202B1 (en) 1999-12-01

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