KR920006844B1 - Reading & writing device of digital audio tape - Google Patents

Reading & writing device of digital audio tape Download PDF

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Publication number
KR920006844B1
KR920006844B1 KR1019880012981A KR880012981A KR920006844B1 KR 920006844 B1 KR920006844 B1 KR 920006844B1 KR 1019880012981 A KR1019880012981 A KR 1019880012981A KR 880012981 A KR880012981 A KR 880012981A KR 920006844 B1 KR920006844 B1 KR 920006844B1
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South Korea
Prior art keywords
tape
heads
reading
writing
read
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KR1019880012981A
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Korean (ko)
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KR900006954A (en
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최선근
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삼성전자 주식회사
안시환
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Priority to KR1019880012981A priority Critical patent/KR920006844B1/en
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    • 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
    • G11B15/60—Guiding record carrier
    • G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis
    • G11B5/534—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis inclined relative to the direction of movement of the tape, e.g. for helicoidal scanning
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • 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
    • G11B2220/913—Digital audio tape [DAT] format

Abstract

In digital audio tape (DAT) including the tape loading mechanism and the tape traveling system, the reading tape (13) and the writing tape (14) depending on the traveling system (15,16) respectively, can be made to contact a drum having two heads at the same time. The two heads on the drum travel on the helical tracks (23,24) of the reading/writing tape, respectively. The mode exchange means transform the two heads in the reading/writing state in the steps of exchanging the working tape for reading and writing.

Description

DAT(DIGITAL AUDIO TAPE)의 동시 읽기/쓰기장치Simultaneous read / write device of DAT (DIGITAL AUDIO TAPE)

제1도는 종래 DAT장치의 평면 구성도.1 is a plan view of a conventional DAT device.

제2a도는 종래 DAT 헤드 드럼의 정면도.Figure 2a is a front view of a conventional DAT head drum.

제2b도는 종래 DAT 테이프의 트랙 예시도.2b is an exemplary track diagram of a conventional DAT tape.

제3도는 이 발명의 평면 구성도.3 is a plan view of the present invention.

제4도는 전개된 드럼과 테이프의 대응상태도.4 is a diagram illustrating a correspondence between the developed drum and the tape.

제5도는 읽기/쓰기 모드변경 수단의 개요도.5 is a schematic diagram of a read / write mode change means.

제6도는 헤드 드럼의 간략한 구성도.6 is a schematic diagram of a head drum.

제7도는 읽기/쓰기 헤드간의 모드변환 챠트.7 is a mode conversion chart between read / write heads.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

11 : 헤드 드럼 12, 12' : 작업구간11: Head drum 12, 12 ': working section

13 : 읽어내기 테이프 14 : 써넣기 테이프13: read tape 14: write tape

15, 16 : 테이프 주행계 17, 18 : 헤드15, 16: tape odometer 17, 18: head

19, 20 : 카세트 21 : 써플라이릴19, 20: cassette 21: supply reel

22 : 테이크업릴 23, 24 : 헬리킬 트랙22: take up reel 23, 24: helikill track

25, 25' : 서플라이 폴 26, 26' : 테이크업25, 25 ': Supply pole 26, 26': Take up

27, 27' : 휴지구간 28, 28' : 모드변환구간27, 27 ': rest period 28, 28': mode conversion section

29 : 로터 30 : 마그네트29: rotor 30: magnet

31 : 홀소자31: Hall element

이 발명은 DAT(DIGITAL AUDIO TAPE) 시스템에 관한 것으로, 특히 한개의 데크 메카니즘 상에서 두개의 테이프에 대한 읽기와 쓰기 작업을 동시에 행할 수 있게 되어 있는 것이다.The present invention relates to a digital audio tape (DAT) system, and in particular, it is possible to simultaneously read and write two tapes on one deck mechanism.

음성 시그널을 A/D 변환하여 매체에 기록하거나 음성신호로서 재생하는 디지탈오디오 시스템은 기록매체로서 콤팩트 디스크나 자기테이프를 사용하고 있다. 콤팩트 디스크는 레이저 빔을 이용한 광기록 매체로서 고밀도의 기록이 가능한 이점은 있으나 통상적으로 읽어내기 전용이라는 단점을 가진다. 후자의 자기테이프를 매체로 하는 DAT는 고밀도의 데이터 수록을 위해서 2헤드 드럼과 헬리컬 스캔 방식을 채용하고 있다. 이러한 DAT 시스템의 테이프 로딩기구는 아날로그 신호를 매체에 기록하는 VCR과 유사한 데크 메카니즘을 가진다. 종래의 DAT 시스템을 제1도에 인용하였다. 카세트(1)내의 테이프(2)는 테이프 로딩을 수행함으로써 서플라이 폴(3), 스런트 폴(4) 및 테이크업(5)에 안내되고 또한 기울기 α를 가지는 헤드드럼(6)의 4분원주면(90°)에 감기며, 고속회전체 어퍼드럼(6)상의 두개의 헤드(7), (7')는 순차로 저속이송 테이프(2)의 헬리컬 데이터 트랙(8)에서 음성데이터를 기록하거나 읽어내게 되는 것이다.A digital audio system that converts audio signals to A / D conversion and records them on a medium or reproduces them as audio signals uses a compact disc or magnetic tape as a recording medium. The compact disc is an optical recording medium using a laser beam, but has the advantage of enabling high density recording, but has a disadvantage of being generally read only. DAT, which uses the latter magnetic tape as a medium, employs a two-head drum and a helical scan method for high density data recording. The tape loading mechanism of such a DAT system has a deck mechanism similar to a VCR for recording analog signals to a medium. The conventional DAT system is cited in FIG. The tape 2 in the cassette 1 is guided to the supply pole 3, the front pawl 4 and the take-up 5 by performing tape loading, and the quadrant peripheral surface of the head drum 6 having a slope α (90 °), the two heads 7, 7 'on the high speed rotor upper drum 6 record audio data on the helical data track 8 of the low speed transfer tape 2 in sequence. Will be read.

상기한 종래의 DAT 장치는 자기테이프를 기록매체로 사용함으로써 디지탈 데이터의 읽기, 쓰기를 자유롭게 행할 수는 있으나 두개의 테이프간에 데이터를 복제(DUBBING)하기 위해서는 두개의 DAT 시스템을 가져야만 하는 것이다. 즉 한개의 DAT 장치내에서 두 테이프간의 데이터 복제가 불가능하므로, DAT의 써넣기 기능은 크게 제약되며, 상기한 DAT 장치를 컴퓨터의 보조기억장치로 활용하는 경우를 생각하면 두 테이프간에 상기한 데이터의 복제기능은 필수적인 기능이 되는 것이다.The conventional DAT apparatus can freely read and write digital data by using magnetic tape as a recording medium, but must have two DAT systems in order to copy data between two tapes. That is, since data copying between two tapes in one DAT device is not possible, the writing function of the DAT is greatly restricted. Function becomes an essential function.

이 발명은 상기와 같은 요청에 부응하여 제안된 것이다.This invention has been proposed in response to such a request.

이 발명의 주된 목적은 한개의 DAT 장치내에서 두 테이프간의 데이터 전송, 즉 읽기와 쓰기를 동시에 행할 수 있게 하는 장치를 제공함에 있으며, 이 발명의 다른 목적은 한개의 2헤드 드럼으로 두 테이프간의 데이터 전송을 행할 수 있게 하는 장치를 제공함에 목적이 있다.The main object of the present invention is to provide a device for simultaneously transferring data between two tapes in one DAT device, that is, reading and writing. Another object of the present invention is to provide data between two tapes in one two-head drum. It is an object of the present invention to provide an apparatus for enabling transmission.

이를 위하여 이 발명의 데크 메카니즘은 한개의 2헤드 드럼을 가지며, 2헤드 드럼은 마주보는 위치에 읽어내기 및 써넣기를 행하는 작업구간이 할당되고 또한 이들 구간내에서 독립적인 두개의 테이프가 상기 드럼의 두 헤드에 각각 접속되며, 2헤드 드럼은 두개의 헤드가 각각 상기 작업구간에 돌입할때 읽어내기 헤드와 써넣기 헤드로 변환될 수 있게 하는 모드변환수단을 포함함을 특징으로 하는 것이다.To this end, the deck mechanism of the present invention has one two-head drum, and the two-head drum is assigned a work section for reading and writing at the opposite positions, and within these sections, two independent tapes are used. The two head drums, each connected to the head, are characterized in that they comprise mode converting means which allow the two heads to be converted into a read head and a write head, respectively, when entering the work section.

이 발명은 제3도 내지 제7도에서 구체화되었다.This invention is embodied in FIGS. 3-7.

제3도에서 한개의 2헤드 드럼(11)에 읽어내기 또는 써넣기 작업을 위한 작업구간(12), (12')이 할당되었으며, 이들 구간에는 읽어내기 테이프(13)와 써넣기 테이프(14)가 각각 접촉되었다. 읽어내기 테이프(13)와 써넣기 테이프(14)는 데크 메카니즘에 포함되는 테이프 로딩 기구에 의하여 각각 독립된 카세트(19), (20)로부터 인출된다. 테이프 로딩이 완료된후 테이프는 소거헤드, 음성소거헤드, 오디오헤드, 전폭소거헤드 등을 포함하는 테이프 주행계(15), (16)에 각각 의존되며, 카세트의 서플라이 릴(21)측으로부터 테이크업 릴(22)쪽으로 서서히 이송된다. 상기 테이프(13), (14)들은 상기 작업구간(12), (12')을 이동하면서 고속으로 회전되는 읽어내기 헤드(17)와 써넣기 헤드(18)를 각각 만나게 된다.In FIG. 3, the work sections 12 and 12 'for reading or writing are assigned to one two-head drum 11, and the reading tape 13 and the writing tape 14 are assigned to these sections. Each contacted. The reading tape 13 and the writing tape 14 are taken out from the independent cassettes 19 and 20, respectively, by a tape loading mechanism included in the deck mechanism. After the tape loading is completed, the tape is dependent on the tape odometers 15 and 16, respectively, including the erasing head, the audio muting head, the audio head, the full width erasing head, and the like. It is conveyed slowly toward the reel 22. The tapes 13 and 14 meet the read head 17 and the write head 18 which are rotated at high speed while moving the work sections 12 and 12 ', respectively.

이러한 읽어내기 헤드(17) 및 써넣기 헤드(18)와의 동적 접촉상황에서 테이프면에 헬리컬 트랙(23), (24)을 조성하기 위하여 상기 테이프 주행계(15), (16)는 상기 두 테이프(13), (14)를 상기 두 헤드(17), (18)의 회전궤도 평면에 대하여 대칭으로 기울여지게 하는 서플라이 폴(25), (25')과 테이크업(26), (26')을 각각 보유하며 또한 로워드럼(11')은 테이프의 주행계를 안정화시키는 테이프 가이드럭(11a)을 보유하며 상기와 같은 드럼과 테이프의 기울기 접속에 의하여 헤드(17), (18)는 테이프(13), (14)면의 헬리컬 트랙(23), (24)위에서 주행할 수 있게 되는 것이다.In order to create the helical tracks 23 and 24 on the tape surface in the dynamic contact situation with the read head 17 and the write head 18, the tape traveling system 15 and 16 are formed by the two tapes ( 13), (14) the supply poles (25), (25 ') and take-up (26), (26') to incline symmetrically with respect to the orbit planes of the two heads (17) and (18). Each retainer also has a tape guide rack 11a for stabilizing the traveling system of the tape. The heads 17 and 18 are tape 13 by the inclined connection of the drum and the tape. It is possible to drive on the helical tracks 23 and 24 on the (14) and (14) planes.

실시예에서 상술한 작업구간(12), (12')은 상기 헤드의 1회전 궤도길이를 4등분한 90°의 궤도구간으로 할당되었다.In the embodiment, the work sections 12 and 12 'described above have been assigned to the track sections of 90 °, which are divided into four quarters of the length of one rotational track of the head.

상기 두개의 작업구간(12), (12')은 대칭적으로 배열되고, 상기 작업구간(12), (12')사이에 90°의 궤도구간으로 된 휴지구간(27), (27')이 할당되었다. 모드변환 수단은 제5도 및 제6도에서와 같이 상기 작업구간(12), (12')의 전방, 즉 실시예에서는 휴지구간(27), (27')의 종단 영역에 할당된 모드 변환구간(28), (28')과 드럼 모터의 로터(29)측에 부착되어 로터와 함께 회전하는 포인트 마그네트(30)와 상기 헤드(17), (18)가 모드 변환구간(28), (28')에 돌입할때 상기 마그네트(30)에 근접상태가 되도록 정지부재에 부착시킨 홀소자(31)로서 구성된다.The two work sections 12, 12 'are symmetrically arranged, and a rest section 27, 27' with a 90 ° track section between the work sections 12, 12 '. Was assigned. The mode converting means converts the mode assigned to the front of the work periods 12 and 12 'as in FIGS. 5 and 6, i.e., to the end regions of the rest periods 27 and 27' in the embodiment. The point magnet 30 and the heads 17 and 18 attached to the sections 28 and 28 'and the rotor 29 of the drum motor to rotate together with the rotor are the mode conversion sections 28 and ( 28 '), it is configured as a Hall element 31 attached to the stop member so as to be in close proximity to the magnet 30 when invading.

그리하여 제어부에서는 상기 헤드(17), (18)가 휴지구간(27), (27')을 주행하다가 모드 변환구간(28), (28')에 당도하는 것을 감지할 수 있고, 이 감지 신호에 의하여 제어부의 대응하는 회로를 동작시킴으로써 제7도에 보인 읽기헤드(17)를 쓰기헤드로, 쓰기헤드(18)를 읽기헤드로 바꿔주며, 또한 헤드에 의해 처리되는 데이터의 전송경로를 절환하게 되는 것이다.Thus, the control unit may detect that the heads 17 and 18 drive to the idle periods 27 and 27 'and reach the mode conversion periods 28 and 28'. By operating the corresponding circuit of the control unit, the readhead 17 shown in FIG. 7 is replaced by the writehead, and the writehead 18 is converted into the readhead, and the transfer path of the data processed by the head is switched. will be.

상기와 같이 이 발명은 한개의 2헤드 드럼에 읽어내기 테이프와 써넣기 테이프를 동시에 접속시킬 수 있게 함으로써 간단한 장치에 의해 두 테이프 간의 데이터 전송을 원활히 행할 수 있으며, 한개의 DAT 장치내에서 두 테이프간의 데이터 전송을 행할 수 있는 효과가 있다.As described above, the present invention makes it possible to connect the read tape and the write tape to one two-head drum at the same time so that the data can be smoothly transferred between the two tapes by a simple device. There is an effect that transmission can be performed.

Claims (3)

데크 메카니즘에 테이프 로딩 기구 및 테이프 주행계를 보유하는 DAT에 있어서, 독립된 두개의 주행계 (15), (16)에 각각 의존되는 읽어내기 테이프(13)와 써넣기 테이프(14)를 한개의 2헤드 드럼(11)에 동시에 접촉시킬 수 있으며, 상기 드럼상의 두헤드(17), (18)는 읽기/쓰기 테이프면의 헬리컬 트랙(23), (24)위에서 각각 주행되고 또한 읽기/쓰기용 작업 테이프가 바뀌는 단계에서 상기 두 헤드(17), (18)를 읽기/쓰기 상태로 바꿔주는 모드변환 수단을 포함하는 DAT(DIGITAL AUDIO TAPE)의 동시 읽기/쓰기 장치.In a DAT having a tape loading mechanism and a tape traveling system on a deck mechanism, two heads of a read tape 13 and a writing tape 14 each dependent on two independent traveling systems 15 and 16 are used. The drums 11 can be brought into contact at the same time, and the two heads 17 and 18 on the drum are driven on the helical tracks 23 and 24 on the read / write tape surface, respectively, and the work tape for reading / writing. And a mode converting means for converting the two heads (17) and (18) into a read / write state at the step of changing. 제1항에 있어서, 상기 헤드(17), (18)의 주행궤도상에는 상기 읽어내기 테이프(13) 및 써넣기 테이프(14)가 각각 접촉되는 작업구간(12), (12')이 할당되며, 상기 두 작업구간(12), (12')은 서로 마주보게 배열되며, 상기 작업구간(12), (12')사이에 휴지구간(27), (27')을 할당시킨 DAT의 동시 읽기/쓰기 장치.The work tracks 12 and 12 'in which the reading tape 13 and the writing tape 14 are in contact with each other are allocated on the traveling tracks of the heads 17 and 18, respectively. The two work periods 12 and 12 'are arranged to face each other, and simultaneous reading / reading of the DATs in which the idle periods 27 and 27' are allocated between the work periods 12 and 12 '. Writing device. 제1항에 있어서, 상기 헤드(17), (18)의 모드 변환수단은 상기 휴지구간(27), (27')내에 할당된 모드변환구간(28), (28')과, 드럼 모터의 로터(29)에 부착된 포인트 마그네트(30)와, 상기 헤드(12), (12')가 모드변환구간(28), (28')에 돌입할때 상기 마그네트(30)에 근접되는 홀소자(31)를 요소로 하는 것.2. The mode converting means of the heads 17 and 18 includes the mode converting sections 28 and 28 'assigned in the idle sections 27 and 27' and the drum motor. The point magnet 30 attached to the rotor 29 and the Hall element close to the magnet 30 when the heads 12 and 12 'enter the mode conversion section 28 and 28'. Using (31) as an element.
KR1019880012981A 1988-10-05 1988-10-05 Reading & writing device of digital audio tape KR920006844B1 (en)

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KR920006844B1 true KR920006844B1 (en) 1992-08-20

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