JPS6410461A - Motor controller for floppy disk - Google Patents

Motor controller for floppy disk

Info

Publication number
JPS6410461A
JPS6410461A JP16506587A JP16506587A JPS6410461A JP S6410461 A JPS6410461 A JP S6410461A JP 16506587 A JP16506587 A JP 16506587A JP 16506587 A JP16506587 A JP 16506587A JP S6410461 A JPS6410461 A JP S6410461A
Authority
JP
Japan
Prior art keywords
signal
motor
fdd
timer
circuit
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
JP16506587A
Other languages
Japanese (ja)
Inventor
Katsushi Inoue
Hiroki 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 JP16506587A priority Critical patent/JPS6410461A/en
Publication of JPS6410461A publication Critical patent/JPS6410461A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To save an electric power consumption without rotating an FDD not under the R/W operation by providing a timer for actuation by a motor-on signal, keeping a motor from starting up during a delay operation and driving the motor after detecting the state of a medium. CONSTITUTION:A timer means 5 for delay actuation by the motor-on signal (a) is provided in an FDD system connected with plural sets of the FDD. Since an AND-circuit 2 for outputting a motor rotation instructing signal is inputted with an output of the timer circuit 5 in addition to the motor-on signal (a), an FDD selecting signal (b) and a detecting signal (d) out of a medium detecting circuit 4, the motor rotation instructing signal is not outputted during the operation of the timer. In the meantime, the loading or exchanging state of the FDD is detected and its signal is sent to a host control part 1. Consequently, an FDD which does not operate R/W cannot be rotated, thus saving the power consumption.
JP16506587A 1987-07-01 1987-07-01 Motor controller for floppy disk Pending JPS6410461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16506587A JPS6410461A (en) 1987-07-01 1987-07-01 Motor controller for floppy disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16506587A JPS6410461A (en) 1987-07-01 1987-07-01 Motor controller for floppy disk

Publications (1)

Publication Number Publication Date
JPS6410461A true JPS6410461A (en) 1989-01-13

Family

ID=15805196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16506587A Pending JPS6410461A (en) 1987-07-01 1987-07-01 Motor controller for floppy disk

Country Status (1)

Country Link
JP (1) JPS6410461A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01168717A (en) * 1987-12-25 1989-07-04 Tosoh Corp Amine catalyst for hard fine cell polyurethane foam
JP2008308072A (en) * 2007-06-15 2008-12-25 Mitsubishi Motors Corp Shock absorbing structure of steering column device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01168717A (en) * 1987-12-25 1989-07-04 Tosoh Corp Amine catalyst for hard fine cell polyurethane foam
JP2008308072A (en) * 2007-06-15 2008-12-25 Mitsubishi Motors Corp Shock absorbing structure of steering column device

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