KR890002858A - 기록재생절환회로 - Google Patents

기록재생절환회로 Download PDF

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Publication number
KR890002858A
KR890002858A KR1019880009607A KR880009607A KR890002858A KR 890002858 A KR890002858 A KR 890002858A KR 1019880009607 A KR1019880009607 A KR 1019880009607A KR 880009607 A KR880009607 A KR 880009607A KR 890002858 A KR890002858 A KR 890002858A
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KR
South Korea
Prior art keywords
circuit
recording
reproducing
buffer
capacitor
Prior art date
Application number
KR1019880009607A
Other languages
English (en)
Other versions
KR910007859B1 (ko
Inventor
히데히꼬 아오끼
요시히꼬 간바라
Original Assignee
아오이 죠이찌
가부시기가이샤 도시바
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.)
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Application filed by 아오이 죠이찌, 가부시기가이샤 도시바 filed Critical 아오이 죠이찌
Publication of KR890002858A publication Critical patent/KR890002858A/ko
Application granted granted Critical
Publication of KR910007859B1 publication Critical patent/KR910007859B1/ko

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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
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • 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
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/125—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams conditioned by the operating function of the apparatus
    • 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
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/14—Masking or switching periodically, e.g. of rotating heads
    • 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
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/036—Insert-editing
    • 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
    • G11B27/30—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 the same track as the main recording
    • G11B27/3027—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 the same track as the main recording used signal is digitally coded
    • G11B27/3063—Subcodes
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • G11B2220/913—Digital audio tape [DAT] format
    • 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
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Amplifiers (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

내용 없음

Description

기록재생절환회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 본 발명의 따른 회로도. 제 2도는 본 발명에 따른 흐름도.

Claims (7)

  1. 자기 테이프에 대한 신호 기록 및 재생을 실행하는 기록재생경용 자기헤드(14)와 이 자기헤드(14)에 기록용 신호를 공급하는 기록용 회로(11)와 상기 자기헤드(14)에 의하여 자기 테이프로부터 검출된 재생신호를 소망의 신호로 조정해서 취출하는 재생용 회로(16,20,23)와 상기 기록회로(11)가 작동상태를 표시하는 기록 모드와 상기 재생용 회로(16,20.23)가 작동 상태를 표시하는 재생 모드와의 사이에 장치를 절환하는 절환수단(15.18,22)으로 구성되는 기록재생절환회로에 있어서, 상기 재생용 회로(16,20,23)가 전하를 축적하는 캐패시터 수단(C1,C2,C3) 및 상기 절환 수단(15,18,22)이 기록모드와 재생모드와의 사이에서 절환될때, 상기 캐패시터 수단(C1,C2,C3)에 축적된 전하를 실질적으로 일정 레벨으로 유지시키는 버퍼 수단(25,27)을 가지는 것을 특징으로 하는 기록재생절환회로.
  2. 제 1항에 있어서, 상기 버퍼 수단(25.27)은 상기 캐패시터 수단(C1,C2.C3)과 직류 전위원(19)과의 사이에 접속되는 것을 특징으로 하는 기록재생절환회로.
  3. 제 2항에 있어서, 상기 버퍼 수단(25.27)은 상기 캐패시터 수단(C1,C2.C3)에 접속된 출력단을 구비하고 이 출력단이 기록모드시 및 재생모드시에 각각 고 임피던스 및 저 임퍼던스를 나타내는 것을 특징으로 하는 기록재생절환회로.
  4. 제 1항에 있어서, 상기 재생용 회로는 상기 재생신호를 중폭하는 증폭회로 수단(16.20) 및 상기 증폭 회로(16,20)의 입력 임퍼던스를 저하시키므로써 상기 재생신호를 안정화하는 피드백회로 수단(23)을 구비하고, 상기 캐패시터 수단이 상기 증폭회로 수단(16,20)속에 설치된 증폭회로용 캐패시터 수단(C1,C2) 및 상기 피드백회로수단(23)속에 설치된 피드백 회로용 캐패시터 수단(C3)으로 구성되고, 또 상기 버퍼 수단이 상기 증폭회로용 캐패시터 수단(C1,C2) 및 상기 피드백 회로용 캐패시터 수단(C3)에 각각 접속된 제1 및 제 2 버퍼회로(25,27)를 포함하는 것을 특징으로 하는 기록재생절환회로.
  5. 제 4항에 있어서, 상기 증폭회로 수단(16,20)은 한쌍을 이루는 제 1및 제 2 트랜지스터(Q1Q2)와 기준 전압원으로 구성되는 차동증폭회로(16)를 구비하고, 상기 제 1 트랜지스터(Q1)의 베이스가 상기 자기헤드(14)와 상기피드백 회로(23)의 쌍방에 접속되고, 상기 제 2 트랜지스터(Q2)의 베이스가 상기 기준전압원(19)에 접속되고 있는 것을 특징으로 하는 기록재생절환회로.
  6. 제 5항에 있어서, 상기 증폭회로용 캐피시터 수단(C1,C2)은 상기 자기헤드 (14)와 상기 제 1 트랜지스터(Q1)의 베이스와의 사이에 접속된 결합 캐피시터(C2)를 구비하고, 상기 제 1 버퍼 회로(27)가 상기 임피던스 저강 캐피시터(C2)와 상기 기준 전압원(19) 간에 접속되고, 상기 제 2 버퍼회로(25)가 상기 제 1 트랜지스터(Q1)의 베이스와 상기 피드백 회로용 캐피시터 수단(C3)간에 접속되는 것을 특징으로 하는 기록재생절환회로.
  7. 제 6항에 있어서, 상기 제 1 버퍼회로(27)는 기록모드시 및 재생모드를 통해서 작동되고, 상기 제 2 버퍼회로(27)는 재생모드신호에 선택적으로 작동되는 것을 특징으로 하는 기록재생절환회로.
    ※ 참고사항 : 최초출원내용에 의하여 공개하는 것임.
KR1019880009607A 1987-07-29 1988-07-29 기록재생절환회로 KR910007859B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62189401A JPH0787008B2 (ja) 1987-07-29 1987-07-29 記録再生切換回路
JP62-189401 1987-07-29
JP189401 1987-07-29

Publications (2)

Publication Number Publication Date
KR890002858A true KR890002858A (ko) 1989-04-11
KR910007859B1 KR910007859B1 (ko) 1991-10-02

Family

ID=16240670

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880009607A KR910007859B1 (ko) 1987-07-29 1988-07-29 기록재생절환회로

Country Status (3)

Country Link
US (1) US4926271A (ko)
JP (1) JPH0787008B2 (ko)
KR (1) KR910007859B1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245405A (ja) * 1988-03-25 1989-09-29 Matsushita Electric Ind Co Ltd 磁気記録再生装置
FR2668645B1 (fr) * 1990-10-29 1994-09-23 Sgs Thomson Microelectronics Dispositif de commutation d'une bobine.
FR2694469B1 (fr) * 1992-07-31 1994-10-28 Sgs Thomson Microelectronics Dispositif de commutation écriture/lecture d'une tête de magnétoscope.
US5793551A (en) * 1995-06-07 1998-08-11 Vtc Inc. Amplifier having a differential input capacitance cancellation circuit
US6005733A (en) * 1997-06-12 1999-12-21 Vtc, Inc. Preamplifier bias circuit for use in an AC coupled magnetoresistive read head amplifier
JP2010213042A (ja) * 2009-03-11 2010-09-24 Renesas Electronics Corp 増幅回路及びアナログ／デジタル変換回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203203A (ja) * 1983-05-06 1984-11-17 Nippon Kogaku Kk <Nikon> 節電可能の信号処理回路
US4665446A (en) * 1983-10-06 1987-05-12 Canon Kabushiki Kaisha Magnetic recording and reproducing apparatus

Also Published As

Publication number Publication date
KR910007859B1 (ko) 1991-10-02
JPS6433775A (en) 1989-02-03
US4926271A (en) 1990-05-15
JPH0787008B2 (ja) 1995-09-20

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