JPS57176583A - Address system for pcm recorder and reproducer - Google Patents

Address system for pcm recorder and reproducer

Info

Publication number
JPS57176583A
JPS57176583A JP5862081A JP5862081A JPS57176583A JP S57176583 A JPS57176583 A JP S57176583A JP 5862081 A JP5862081 A JP 5862081A JP 5862081 A JP5862081 A JP 5862081A JP S57176583 A JPS57176583 A JP S57176583A
Authority
JP
Japan
Prior art keywords
amplifier
output
comparator
circuit
rewinding
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
Application number
JP5862081A
Other languages
Japanese (ja)
Inventor
Daiki Nabeshima
Yoshitaka Katayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5862081A priority Critical patent/JPS57176583A/en
Publication of JPS57176583A publication Critical patent/JPS57176583A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/10009—Improvement or modification of read or write signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To apply almost the same amplitude signal to a comparator in any case, by changing the gain of an amplifier connected to an audio track head at normal reproduction, fast feed and rewinding. CONSTITUTION:A signal reproduced via an audio track head 8 is given to a variable amplifier and an output of an amplifier 30 is applied to a positive comparator 32 and a negative comparator 33 via a smoothing circuit 31. The outputs of the comparators are given to a digital demodulation circuit 21 and a clock reproduction circuit 22 via an OR gate 34. The smoothing circuit 31 detects a positive pulse peak value of the output of the amplifier 30. After converting it to a DC at a DC converter 35, an output via a buffer amplifier 36 controls the amplifier 30, allowing to achieve a uniform output level independently of the fluctuation of tape speed at normal reproduction, fast feed and rewinding.
JP5862081A 1981-04-20 1981-04-20 Address system for pcm recorder and reproducer Pending JPS57176583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5862081A JPS57176583A (en) 1981-04-20 1981-04-20 Address system for pcm recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5862081A JPS57176583A (en) 1981-04-20 1981-04-20 Address system for pcm recorder and reproducer

Publications (1)

Publication Number Publication Date
JPS57176583A true JPS57176583A (en) 1982-10-29

Family

ID=13089604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5862081A Pending JPS57176583A (en) 1981-04-20 1981-04-20 Address system for pcm recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS57176583A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742141A (en) * 1985-11-13 1988-05-03 Rhone-Poulenc Specialites Chimiques Imido polymer from bis imide and alkenyloxyaniline
EP0542540A2 (en) * 1991-11-12 1993-05-19 Samsung Electronics Co. Ltd. Playback equalising circuit for a digital magnetic reproducing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118172A (en) * 1974-08-03 1976-02-13 Kobayashi Denki Seisakusho Kk TOGUTORITSUKEYOAAMU
JPS5246806A (en) * 1975-10-13 1977-04-14 Teac Co Multi-channel reproducer equipped with device for compensting drop-out
JPS547911A (en) * 1977-06-20 1979-01-20 Matsushita Electric Ind Co Ltd Control signal reproducing system
JPS55135338A (en) * 1979-04-09 1980-10-22 Sharp Corp Pcm system signal recording and reproducing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118172A (en) * 1974-08-03 1976-02-13 Kobayashi Denki Seisakusho Kk TOGUTORITSUKEYOAAMU
JPS5246806A (en) * 1975-10-13 1977-04-14 Teac Co Multi-channel reproducer equipped with device for compensting drop-out
JPS547911A (en) * 1977-06-20 1979-01-20 Matsushita Electric Ind Co Ltd Control signal reproducing system
JPS55135338A (en) * 1979-04-09 1980-10-22 Sharp Corp Pcm system signal recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742141A (en) * 1985-11-13 1988-05-03 Rhone-Poulenc Specialites Chimiques Imido polymer from bis imide and alkenyloxyaniline
EP0542540A2 (en) * 1991-11-12 1993-05-19 Samsung Electronics Co. Ltd. Playback equalising circuit for a digital magnetic reproducing apparatus

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