JPS57100614A - Magnetic recorder and reproducer - Google Patents

Magnetic recorder and reproducer

Info

Publication number
JPS57100614A
JPS57100614A JP17581780A JP17581780A JPS57100614A JP S57100614 A JPS57100614 A JP S57100614A JP 17581780 A JP17581780 A JP 17581780A JP 17581780 A JP17581780 A JP 17581780A JP S57100614 A JPS57100614 A JP S57100614A
Authority
JP
Japan
Prior art keywords
frequency
adjustment
sensitivity
compensation
level variation
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
JP17581780A
Other languages
Japanese (ja)
Other versions
JPS6315651B2 (en
Inventor
Teisho Fujiyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17581780A priority Critical patent/JPS57100614A/en
Publication of JPS57100614A publication Critical patent/JPS57100614A/en
Publication of JPS6315651B2 publication Critical patent/JPS6315651B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising

Abstract

PURPOSE:To shorten a test time and to perform automatic equalizer adjustment free of a test error due to level variation, by setting the adjustment time of high-frequency-range compensation longer than other adjustment times. CONSTITUTION:A processing means 13 control a sensitivity varying circuit 4 and variable equalizers 5 and 6 for intermediate frequency and high frequency ranges to adjust the extents of compensation of sensitivity and frequency characteristics automatically. For the adjustment of sensitivity or intermediate-frequency-range compensation, a timer 17 is set to T1 or Tn, and for the adjustment of high- frequency-range compensation, the timer 17 is set to TH; those adjustment time are so set that T1 or TL<TH. Namely, low-frequency sections T1 and TL are shortened, and the high-frequency-range equalizer adjustment section TH is so set that the influence of level variation is not exerted. Consequently, a test time is shortened and automatic equalizer adjustment free of a test error due to the level variation is performed.
JP17581780A 1980-12-15 1980-12-15 Magnetic recorder and reproducer Granted JPS57100614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17581780A JPS57100614A (en) 1980-12-15 1980-12-15 Magnetic recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17581780A JPS57100614A (en) 1980-12-15 1980-12-15 Magnetic recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS57100614A true JPS57100614A (en) 1982-06-22
JPS6315651B2 JPS6315651B2 (en) 1988-04-05

Family

ID=16002740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17581780A Granted JPS57100614A (en) 1980-12-15 1980-12-15 Magnetic recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS57100614A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324443U (en) * 1989-07-13 1991-03-13
JPH0623342U (en) * 1992-08-25 1994-03-25 株式会社ケンウッド Automotive sound system
KR0180896B1 (en) * 1996-07-19 1999-05-15 정인현 Stored apparatus for a portable personal communication terminal

Also Published As

Publication number Publication date
JPS6315651B2 (en) 1988-04-05

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