JPS5625277A - Control system for magnetic tape - Google Patents

Control system for magnetic tape

Info

Publication number
JPS5625277A
JPS5625277A JP9902179A JP9902179A JPS5625277A JP S5625277 A JPS5625277 A JP S5625277A JP 9902179 A JP9902179 A JP 9902179A JP 9902179 A JP9902179 A JP 9902179A JP S5625277 A JPS5625277 A JP S5625277A
Authority
JP
Japan
Prior art keywords
magnetic tape
data
tape
marker
bot
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
JP9902179A
Other languages
Japanese (ja)
Inventor
Kitsuya Tsuchiya
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9902179A priority Critical patent/JPS5625277A/en
Publication of JPS5625277A publication Critical patent/JPS5625277A/en
Pending legal-status Critical Current

Links

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE: To perform data retrieval on a magnetic tape at a high speed by controlling a fast forward run in accordance with read data of a value expressing the distance from the beginning terminal marker of a tape written at an index part to respective data blocks.
CONSTITUTION: When magnetic tape unit 1 detects beginning terminal marker BOT of magnetic tape 9, run distance measuring circuit 3 initializes counter 5. Then, data expressing distances from marker BOT written at index part IND of tape 9 to data groups DN... are read and set in register REG8. Then when a data run distance measured value passed through counter 5 agrees with the set value of register REG8, comparison control circuit 7 stops the fast forwarding of the magnetic tape. From this point, the normal reproduction state is set and the positioning of the beginnings of fixed data groups DN... and the reading of them are performed, so that the retrieval of the data file by the magnetic tape can be performed at a high speed.
COPYRIGHT: (C)1981,JPO&Japio
JP9902179A 1979-08-02 1979-08-02 Control system for magnetic tape Pending JPS5625277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9902179A JPS5625277A (en) 1979-08-02 1979-08-02 Control system for magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9902179A JPS5625277A (en) 1979-08-02 1979-08-02 Control system for magnetic tape

Publications (1)

Publication Number Publication Date
JPS5625277A true JPS5625277A (en) 1981-03-11

Family

ID=14235542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9902179A Pending JPS5625277A (en) 1979-08-02 1979-08-02 Control system for magnetic tape

Country Status (1)

Country Link
JP (1) JPS5625277A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187182A (en) * 1985-02-15 1986-08-20 Matsushita Electric Ind Co Ltd Magnetic tape reproducing device
KR101029222B1 (en) 2002-11-07 2011-04-14 오또꿈뿌 오와이제이 Method for the formation of a good contact surface on a cathode support bar and support bar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187182A (en) * 1985-02-15 1986-08-20 Matsushita Electric Ind Co Ltd Magnetic tape reproducing device
KR101029222B1 (en) 2002-11-07 2011-04-14 오또꿈뿌 오와이제이 Method for the formation of a good contact surface on a cathode support bar and support bar

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