JPS57147112A - Binary data recorder - Google Patents

Binary data recorder

Info

Publication number
JPS57147112A
JPS57147112A JP3163381A JP3163381A JPS57147112A JP S57147112 A JPS57147112 A JP S57147112A JP 3163381 A JP3163381 A JP 3163381A JP 3163381 A JP3163381 A JP 3163381A JP S57147112 A JPS57147112 A JP S57147112A
Authority
JP
Japan
Prior art keywords
data
signal
readout
output
binary data
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.)
Granted
Application number
JP3163381A
Other languages
Japanese (ja)
Other versions
JPH038001B2 (en
Inventor
Nobuyoshi Nakura
Taneichi Kawai
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.)
Aisin Corp
Original Assignee
Aisin Seiki 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP3163381A priority Critical patent/JPS57147112A/en
Priority to US06/350,910 priority patent/US4473851A/en
Publication of JPS57147112A publication Critical patent/JPS57147112A/en
Publication of JPH038001B2 publication Critical patent/JPH038001B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To achieve small-sized and low-cost analog magnetic recording and reproduction of binary data, by setting changing point information of a reference signal as a binary data recording signal. CONSTITUTION:When output ports PO-0 or PO-1 go to high level ''1'' indicating recording of data 0 or 1, an output pulse of an oscillator 41 is counted with a NOR gate 45 and a counter 42. A signal of the output port PO-1 is applied to a level data ROM as a data group indication signal, a readout address of an ROM43 is incremented at each count of the counter 42 and the readout data are renewed. A device 30 renews an sets ''1'' to the PO-0 or PO-1 in response to the state of the data bit with the output ''1'' of the AND gate 46. The readout data of the ROM43 is converted into an analog voltage at a D/A converter 44 and applied to an analog magnetic recorder 50.
JP3163381A 1981-03-05 1981-03-05 Binary data recorder Granted JPS57147112A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3163381A JPS57147112A (en) 1981-03-05 1981-03-05 Binary data recorder
US06/350,910 US4473851A (en) 1981-03-05 1982-02-22 Analog magnetic recording system for binary signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3163381A JPS57147112A (en) 1981-03-05 1981-03-05 Binary data recorder

Publications (2)

Publication Number Publication Date
JPS57147112A true JPS57147112A (en) 1982-09-10
JPH038001B2 JPH038001B2 (en) 1991-02-05

Family

ID=12336608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3163381A Granted JPS57147112A (en) 1981-03-05 1981-03-05 Binary data recorder

Country Status (1)

Country Link
JP (1) JPS57147112A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438703A (en) * 1990-06-04 1992-02-07 Nec Corp Writing current setting circuit for floppy disk device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50125711A (en) * 1974-03-11 1975-10-03
JPS5528566A (en) * 1978-08-21 1980-02-29 Nec Corp Magnetic recording system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50125711A (en) * 1974-03-11 1975-10-03
JPS5528566A (en) * 1978-08-21 1980-02-29 Nec Corp Magnetic recording system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438703A (en) * 1990-06-04 1992-02-07 Nec Corp Writing current setting circuit for floppy disk device

Also Published As

Publication number Publication date
JPH038001B2 (en) 1991-02-05

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