JPS54136308A - Track servo system - Google Patents

Track servo system

Info

Publication number
JPS54136308A
JPS54136308A JP4322478A JP4322478A JPS54136308A JP S54136308 A JPS54136308 A JP S54136308A JP 4322478 A JP4322478 A JP 4322478A JP 4322478 A JP4322478 A JP 4322478A JP S54136308 A JPS54136308 A JP S54136308A
Authority
JP
Japan
Prior art keywords
track
circuit
servo
tape
peak value
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
JP4322478A
Other languages
Japanese (ja)
Inventor
Kazuhiro Shigemata
Tomio Nakamura
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 JP4322478A priority Critical patent/JPS54136308A/en
Publication of JPS54136308A publication Critical patent/JPS54136308A/en
Pending legal-status Critical Current

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  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE: To make possible track servo and achieve the improvement in track density by making the width of each track of a multitrack type magnetic head smaller than servo track width and superposing the reproduction servo signal of dach track.
CONSTITUTION: A tape 1 is fed by motors 19, 20 and the reproduction signals from head gaps 12, 13 are amplified 16 to waveforms A, B. These both signals are then superposed in a circuit 15 to obtain the waveform C. The signal having this peak value is inputted to a discrimination circuit 17 which then discriminates that a mark 7 is before or after the peak value of the servo signal waveform and detects the time lag thereof. The correction direction and quantity are then supplied to a circuit 18. The circuit 18 drives the motor 19 which in turn feeds the tape 1, thereby performing positioning of the recording track and head gaps.
COPYRIGHT: (C)1979,JPO&Japio
JP4322478A 1978-04-14 1978-04-14 Track servo system Pending JPS54136308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4322478A JPS54136308A (en) 1978-04-14 1978-04-14 Track servo system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4322478A JPS54136308A (en) 1978-04-14 1978-04-14 Track servo system

Publications (1)

Publication Number Publication Date
JPS54136308A true JPS54136308A (en) 1979-10-23

Family

ID=12657934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4322478A Pending JPS54136308A (en) 1978-04-14 1978-04-14 Track servo system

Country Status (1)

Country Link
JP (1) JPS54136308A (en)

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