JPS5733424A - Measuring method of electromagnetic conversion characteristic of magnetic head - Google Patents

Measuring method of electromagnetic conversion characteristic of magnetic head

Info

Publication number
JPS5733424A
JPS5733424A JP10894780A JP10894780A JPS5733424A JP S5733424 A JPS5733424 A JP S5733424A JP 10894780 A JP10894780 A JP 10894780A JP 10894780 A JP10894780 A JP 10894780A JP S5733424 A JPS5733424 A JP S5733424A
Authority
JP
Japan
Prior art keywords
reference signal
magnetic head
signal
frequency
sampling
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
JP10894780A
Other languages
Japanese (ja)
Other versions
JPS6367251B2 (en
Inventor
Kazumasa Doi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10894780A priority Critical patent/JPS5733424A/en
Publication of JPS5733424A publication Critical patent/JPS5733424A/en
Publication of JPS6367251B2 publication Critical patent/JPS6367251B2/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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To realize a stable measuring circuit system to the environmental change, by securing a linear AC-DC conversion at a low level; CONSTITUTION:A sampling signal (frequency fQ) is set to a reference signal (frequency fs) with such conditions under which fs-nfQ=fc (fc: constant frequency) for the frequencies fs and fQ. Then a switching 5 is carried out for the reference signal by the sampling signal, and the recording is carried out to a magnetic recording medium 2 through a testing magnetic head 1. When reproducing, the reference signal part of the switching type reproduced reference signal is sampled and held by the sampling pulse produced from the signal obtained by giving an envelope wave detection 9 to the switching type reproduced reference signal supplied from a head 2. This reference signal receives a peak holding 14 and then an A/D conversion 15.
JP10894780A 1980-08-07 1980-08-07 Measuring method of electromagnetic conversion characteristic of magnetic head Granted JPS5733424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10894780A JPS5733424A (en) 1980-08-07 1980-08-07 Measuring method of electromagnetic conversion characteristic of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10894780A JPS5733424A (en) 1980-08-07 1980-08-07 Measuring method of electromagnetic conversion characteristic of magnetic head

Publications (2)

Publication Number Publication Date
JPS5733424A true JPS5733424A (en) 1982-02-23
JPS6367251B2 JPS6367251B2 (en) 1988-12-23

Family

ID=14497672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10894780A Granted JPS5733424A (en) 1980-08-07 1980-08-07 Measuring method of electromagnetic conversion characteristic of magnetic head

Country Status (1)

Country Link
JP (1) JPS5733424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090353U (en) * 1983-11-28 1985-06-20 倉橋　明廣 multilevel parking device
JPH02247813A (en) * 1989-03-20 1990-10-03 Hitachi Electron Eng Co Ltd System for measuring current saturation characteristic of magnetic disk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090353U (en) * 1983-11-28 1985-06-20 倉橋　明廣 multilevel parking device
JPH02247813A (en) * 1989-03-20 1990-10-03 Hitachi Electron Eng Co Ltd System for measuring current saturation characteristic of magnetic disk

Also Published As

Publication number Publication date
JPS6367251B2 (en) 1988-12-23

Similar Documents

Publication Publication Date Title
JPS5736407A (en) Magnetic reproducer
JPS53111708A (en) Vide signal reproducing circuit
EP0219037B1 (en) Waveform processing circuit
JPS5733424A (en) Measuring method of electromagnetic conversion characteristic of magnetic head
JPS6437745A (en) Magneto-optical disk device
GB1495133A (en) Impact impulse measuring device
JPS5658140A (en) Tracking servo device for information reader
JPS57104388A (en) Information recording medium regeneration device
JPS5644109A (en) Magnetic recording and reproducing system
JPS57100613A (en) Magnetic recording and reproducing system
JPS5390905A (en) Measurig method for magnetic characteristic of magnetic recording medium
JPS53116106A (en) Removal method of interference distortion produced in demodulated signals by inteference of fm wave signals to themselves in recording and reproducing system of mu-tichannel disc records
JPS56117382A (en) Read-in control system in magnetic recording and playback device
JPS5733423A (en) Measuring method of electromagnetic conversion characteristic of magnetic head
JPS5545145A (en) Magnetic recording and reproducing device
JPS56111113A (en) Recording and reproducing system of stereo signal
SU647726A1 (en) Method of discriminating pulses from signals reproduced from magnetic carrier
JPS5798125A (en) Magnetic recorder and reproducer
JPS6413261A (en) Digital recording device
JPS5625215A (en) Data separating circuit
JPS55113108A (en) Magnetic recording and reproducing circuit
JPS56119907A (en) Recording current adjusting system for magnetic recording and reproducing device
JPS5733425A (en) Testing device for electromagnetic conversion characteristic of magnetic head
MY122099A (en) Data slice circuit and data slice method
JPS5492716A (en) Video signal recording circuit