JPS5665353A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS5665353A
JPS5665353A JP13888179A JP13888179A JPS5665353A JP S5665353 A JPS5665353 A JP S5665353A JP 13888179 A JP13888179 A JP 13888179A JP 13888179 A JP13888179 A JP 13888179A JP S5665353 A JPS5665353 A JP S5665353A
Authority
JP
Japan
Prior art keywords
head
phase
reproduced
control signal
disorder
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
JP13888179A
Other languages
Japanese (ja)
Inventor
Masato Tanaka
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 JP13888179A priority Critical patent/JPS5665353A/en
Publication of JPS5665353A publication Critical patent/JPS5665353A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the disorder of a reproduced picture by reducing a tracking error at a joint part where joint recording is donw, by making a servo system for tracking respond by detecting a phase change of a control signal by the 2nd head.
CONSTITUTION: The 1st head 21 records a control signal. The 2nd head 22 is provided at a position preceding the above-mentioned position. In reproduction mode, the reproduced control signal from head 22 is supplied to phase comparator 30, where it is phase-compared with signal PG showing the rotary phase of the drum. The comparison output is supplied to motor 70 by way of low-pass filter 50 and amplifier 60 to control the rotary phase of the drum. Consequently, a shift in reproduced track is distributed before and behind a joint part by adequately selecting the transfer functions of filter 50 and the mechanism part and is -90° or +90° at a maximum, so that the disorder of a reproduced picture can nearly be eliminated.
COPYRIGHT: (C)1981,JPO&Japio
JP13888179A 1979-10-26 1979-10-26 Magnetic recording and reproducing device Pending JPS5665353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13888179A JPS5665353A (en) 1979-10-26 1979-10-26 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13888179A JPS5665353A (en) 1979-10-26 1979-10-26 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS5665353A true JPS5665353A (en) 1981-06-03

Family

ID=15232288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13888179A Pending JPS5665353A (en) 1979-10-26 1979-10-26 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS5665353A (en)

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