JPS5545145A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS5545145A
JPS5545145A JP11792878A JP11792878A JPS5545145A JP S5545145 A JPS5545145 A JP S5545145A JP 11792878 A JP11792878 A JP 11792878A JP 11792878 A JP11792878 A JP 11792878A JP S5545145 A JPS5545145 A JP S5545145A
Authority
JP
Japan
Prior art keywords
reference signal
recording system
recording
reproduction output
recorded
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
JP11792878A
Other languages
Japanese (ja)
Inventor
Shigemitsu Higuchi
Toru Sanbe
Naoya Fujita
Masamichi Yamada
Koichi Tomatsuri
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 JP11792878A priority Critical patent/JPS5545145A/en
Priority to DE2938937A priority patent/DE2938937C2/en
Publication of JPS5545145A publication Critical patent/JPS5545145A/en
Priority to US06/390,884 priority patent/US4422109A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make the accurate adjustment of a recording system by repeatedly adjusting the recording system by comparing a value obtained from an identical- frequency reference signal by recording, reproducing, sampling and holding.
CONSTITUTION: A reference signal of a fixed frequency from reference signal oscillation part 4 is recorded on tape 7 and reproduced, and the reproduction output is rectified and held by sample holding circuit 10; and it is A/D-converted and variable recording equalizer 2, variable gain amplifier 3, etc., are controlled through control part 5 by a control signal corresponding to a difference from a reference reproduction digital output, thereby adjusting the recording system. Then, a reference signal of the same frequency is recorded and regenerated and this adjustment is repeated to decrease gradually the influence of the linearlity between the reproduction output and a control signal formed by the reproduction output, so that accurate adjustment of the recording system can be made.
COPYRIGHT: (C)1980,JPO&Japio
JP11792878A 1978-09-27 1978-09-27 Magnetic recording and reproducing device Pending JPS5545145A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP11792878A JPS5545145A (en) 1978-09-27 1978-09-27 Magnetic recording and reproducing device
DE2938937A DE2938937C2 (en) 1978-09-27 1979-09-26 Adjustment device and method for a magnetic tape recorder and reproducer
US06/390,884 US4422109A (en) 1978-09-27 1982-06-22 Magnetic recording and reproducing apparatus automatically adjustable to each individual magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11792878A JPS5545145A (en) 1978-09-27 1978-09-27 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS5545145A true JPS5545145A (en) 1980-03-29

Family

ID=14723661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11792878A Pending JPS5545145A (en) 1978-09-27 1978-09-27 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS5545145A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120209A (en) * 1981-01-14 1982-07-27 Nippon Gakki Seizo Kk Setting device for optimum operation characteristics of magnetic recorder and reproducer
EP0480483A2 (en) * 1986-12-05 1992-04-15 Minnesota Mining And Manufacturing Company Method and system for dynamically calibrating the gain of a variable gain read amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120209A (en) * 1981-01-14 1982-07-27 Nippon Gakki Seizo Kk Setting device for optimum operation characteristics of magnetic recorder and reproducer
JPH0239005B2 (en) * 1981-01-14 1990-09-03 Yamaha Corp
EP0480483A2 (en) * 1986-12-05 1992-04-15 Minnesota Mining And Manufacturing Company Method and system for dynamically calibrating the gain of a variable gain read amplifier

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