JPS55142406A - Recording and reproducing unit - Google Patents

Recording and reproducing unit

Info

Publication number
JPS55142406A
JPS55142406A JP5105979A JP5105979A JPS55142406A JP S55142406 A JPS55142406 A JP S55142406A JP 5105979 A JP5105979 A JP 5105979A JP 5105979 A JP5105979 A JP 5105979A JP S55142406 A JPS55142406 A JP S55142406A
Authority
JP
Japan
Prior art keywords
track
circuit
recording
demark
positioning
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
JP5105979A
Other languages
Japanese (ja)
Inventor
Takao Suzuki
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 JP5105979A priority Critical patent/JPS55142406A/en
Publication of JPS55142406A publication Critical patent/JPS55142406A/en
Pending legal-status Critical Current

Links

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To completely remove the defective track without changing the track recording format, by utilizing the track number area.
CONSTITUTION: When the readout error is detected at the track number read-out error detecting circuit 204, a signal is fed to the control circuit 217. The circuit 217 records the demark pattern in the information area via the demark pattern generating circuit 208, AND gate 214, recording circuit 206 and recording head 207, and after that, positioning operation is made to the next track via the track positioning circuit 216. If no error is detected, the information in the buffer circuit 210 is recorded in the information area. The track number of the track positioned the same as recording is read out for information area. Since the track detecting the demark pattern is skipped, the same operation is again made after the positioning to the next track.
COPYRIGHT: (C)1980,JPO&Japio
JP5105979A 1979-04-24 1979-04-24 Recording and reproducing unit Pending JPS55142406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5105979A JPS55142406A (en) 1979-04-24 1979-04-24 Recording and reproducing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5105979A JPS55142406A (en) 1979-04-24 1979-04-24 Recording and reproducing unit

Publications (1)

Publication Number Publication Date
JPS55142406A true JPS55142406A (en) 1980-11-07

Family

ID=12876224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5105979A Pending JPS55142406A (en) 1979-04-24 1979-04-24 Recording and reproducing unit

Country Status (1)

Country Link
JP (1) JPS55142406A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60673A (en) * 1983-06-16 1985-01-05 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448213A (en) * 1977-09-26 1979-04-16 Hitachi Ltd Track format system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448213A (en) * 1977-09-26 1979-04-16 Hitachi Ltd Track format system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60673A (en) * 1983-06-16 1985-01-05 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

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