JPS55125532A - Magnetic recorder/reproducer - Google Patents

Magnetic recorder/reproducer

Info

Publication number
JPS55125532A
JPS55125532A JP3156179A JP3156179A JPS55125532A JP S55125532 A JPS55125532 A JP S55125532A JP 3156179 A JP3156179 A JP 3156179A JP 3156179 A JP3156179 A JP 3156179A JP S55125532 A JPS55125532 A JP S55125532A
Authority
JP
Japan
Prior art keywords
head
height position
heads
detected
basic surface
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
JP3156179A
Other languages
Japanese (ja)
Other versions
JPS6255205B2 (en
Inventor
Masayuki Takano
Yuichi Matsushita
Sadao Hosoi
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP3156179A priority Critical patent/JPS55125532A/en
Publication of JPS55125532A publication Critical patent/JPS55125532A/en
Publication of JPS6255205B2 publication Critical patent/JPS6255205B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To use a head for both recording and reproduction and to reduce the number of heads, by detecting a height position from the rotary surface of a rotary magnetic head mounted on the movable element, and controlling the height position of the head.
CONSTITUTION: The lower surface 12a of the upper rotary drum 12 is made a basic surface, heads 20 and 21 which are opposite to each other and cross at right angles with each other are used in order to detect the height position from the basic surface of the heads 16 and 17, and the magnetic flux which is generated by the signal current of the head 20 is detected by the head 21. The amplitude of this detective output is detected 24, also the phase is detected 26, and the correcting signal of the polarity corresponding to deviation of the height position of the head 16 or 17 is obtained in accordance with both the detective outputs. In accordance with the aforesaid correcting signal, voltage is applied to the electrode of the bimorph plate 14, and the height position of the head 16 or 17 is controlled so as to be the basic surface.
COPYRIGHT: (C)1980,JPO&Japio
JP3156179A 1979-03-16 1979-03-16 Magnetic recorder/reproducer Granted JPS55125532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3156179A JPS55125532A (en) 1979-03-16 1979-03-16 Magnetic recorder/reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3156179A JPS55125532A (en) 1979-03-16 1979-03-16 Magnetic recorder/reproducer

Publications (2)

Publication Number Publication Date
JPS55125532A true JPS55125532A (en) 1980-09-27
JPS6255205B2 JPS6255205B2 (en) 1987-11-18

Family

ID=12334579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3156179A Granted JPS55125532A (en) 1979-03-16 1979-03-16 Magnetic recorder/reproducer

Country Status (1)

Country Link
JP (1) JPS55125532A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512247A1 (en) * 1981-08-28 1983-03-04 Ampex SYSTEM AND METHOD FOR POSITIONING A STRUCTURE OF RECORDING / REPRODUCTION HEADS
JPH04134616A (en) * 1990-09-21 1992-05-08 Victor Co Of Japan Ltd Position detecting system for recording/reproducing element
US5384676A (en) * 1991-04-19 1995-01-24 Mitsubishi Denki Kabushiki Kaisha Magnetic head position controller in a magnetic recording and reproducing apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0290816A (en) * 1988-09-28 1990-03-30 Hitachi Ltd Method and circuit for correcting error
JPH03132974A (en) * 1989-10-18 1991-06-06 Hitachi Ltd Code error correction device
JPH04176061A (en) * 1990-11-07 1992-06-23 Matsushita Electric Ind Co Ltd Data-signal reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61267918A (en) * 1986-05-23 1986-11-27 Sony Corp Magnetic recording/reproducing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61267918A (en) * 1986-05-23 1986-11-27 Sony Corp Magnetic recording/reproducing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512247A1 (en) * 1981-08-28 1983-03-04 Ampex SYSTEM AND METHOD FOR POSITIONING A STRUCTURE OF RECORDING / REPRODUCTION HEADS
JPH04134616A (en) * 1990-09-21 1992-05-08 Victor Co Of Japan Ltd Position detecting system for recording/reproducing element
US5384676A (en) * 1991-04-19 1995-01-24 Mitsubishi Denki Kabushiki Kaisha Magnetic head position controller in a magnetic recording and reproducing apparatus

Also Published As

Publication number Publication date
JPS6255205B2 (en) 1987-11-18

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