JPS55129953A - Slip check system in magnetic tape device - Google Patents

Slip check system in magnetic tape device

Info

Publication number
JPS55129953A
JPS55129953A JP3683379A JP3683379A JPS55129953A JP S55129953 A JPS55129953 A JP S55129953A JP 3683379 A JP3683379 A JP 3683379A JP 3683379 A JP3683379 A JP 3683379A JP S55129953 A JPS55129953 A JP S55129953A
Authority
JP
Japan
Prior art keywords
counter
output
speed
tachometer
slip
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
JP3683379A
Other languages
Japanese (ja)
Inventor
Yukio Taniyama
Tadahiro Wada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3683379A priority Critical patent/JPS55129953A/en
Publication of JPS55129953A publication Critical patent/JPS55129953A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To perform slip check more exactly by starting write modulation when the speed does not reach a fixed value and by comparing tachometer pulses at this time with data pulses.
CONSTITUTION: The output of tachometer 5 is counted as tachometer pulse intervals by tachometer pulse sensor 6 and the second counter 7, and the first and the second speeds are detected by speed detection means 9. When speed detection means 9 detects the first speed Va, modulating circuit 11 starts to start write. When written data reaches read head 4, the output is stored in register 15 through peak detector 13, etc. Meanwhile, the third counter 10 counts pulses only during the passage time of the tape through the head gap on the basis of the output of the second speed Vb and stops. Then, the output of the third counter 10 is applied to comparator circuit 21 together with data pulses through counter 14 and is compared with the reference value for no slip to detect slip. Thus, more exact check is possible.
COPYRIGHT: (C)1980,JPO&Japio
JP3683379A 1979-03-30 1979-03-30 Slip check system in magnetic tape device Pending JPS55129953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3683379A JPS55129953A (en) 1979-03-30 1979-03-30 Slip check system in magnetic tape device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3683379A JPS55129953A (en) 1979-03-30 1979-03-30 Slip check system in magnetic tape device

Publications (1)

Publication Number Publication Date
JPS55129953A true JPS55129953A (en) 1980-10-08

Family

ID=12480739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3683379A Pending JPS55129953A (en) 1979-03-30 1979-03-30 Slip check system in magnetic tape device

Country Status (1)

Country Link
JP (1) JPS55129953A (en)

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