JPS55105764A - Input and output unit for magnetic tape recording and reproducing unit - Google Patents

Input and output unit for magnetic tape recording and reproducing unit

Info

Publication number
JPS55105764A
JPS55105764A JP1225179A JP1225179A JPS55105764A JP S55105764 A JPS55105764 A JP S55105764A JP 1225179 A JP1225179 A JP 1225179A JP 1225179 A JP1225179 A JP 1225179A JP S55105764 A JPS55105764 A JP S55105764A
Authority
JP
Japan
Prior art keywords
tape recorder
systems
input
magnetic tape
signal
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
JP1225179A
Other languages
Japanese (ja)
Inventor
Teruhiro Takezawa
Shigeru Komatsu
Shigeru Hirahata
Tsuguji Tateuchi
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 JP1225179A priority Critical patent/JPS55105764A/en
Publication of JPS55105764A publication Critical patent/JPS55105764A/en
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To avoid the running state of undesired tape recorder against the interference due to program runaway and noise, by stopping the both systems without fail at the abnormal state in which the two systems are run at the same time.
CONSTITUTION: The first system tape recorder connected to the terminal board 10 and the second system tape recorder connected to the terminal board 14 are avoided for simultaneous operation. In recording signal to a tape recorder, the FSK oscillation circuit 20 is fed to the signal output terminals 11 and 15 via the signal path 200 and recording is made only for the recorder in running state. Conversely, only one of the signals incoming from the signal input terminals 12 and 16 is fed to the FSK demodulation circuit 21, since the contact of the relay 27 and that of the relay 28 are exclusively connected each other. Further, due to some causes, if the outputs of the FF circuits 22 and 23 are both present, the NAND circuit 26 detects it and the running of the both systems can be stopped.
COPYRIGHT: (C)1980,JPO&Japio
JP1225179A 1979-02-07 1979-02-07 Input and output unit for magnetic tape recording and reproducing unit Pending JPS55105764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1225179A JPS55105764A (en) 1979-02-07 1979-02-07 Input and output unit for magnetic tape recording and reproducing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1225179A JPS55105764A (en) 1979-02-07 1979-02-07 Input and output unit for magnetic tape recording and reproducing unit

Publications (1)

Publication Number Publication Date
JPS55105764A true JPS55105764A (en) 1980-08-13

Family

ID=11800136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1225179A Pending JPS55105764A (en) 1979-02-07 1979-02-07 Input and output unit for magnetic tape recording and reproducing unit

Country Status (1)

Country Link
JP (1) JPS55105764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306453A (en) * 1989-05-19 1990-12-19 Fujitsu Ltd Tape cut preventing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306453A (en) * 1989-05-19 1990-12-19 Fujitsu Ltd Tape cut preventing system

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