JPS57130217A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS57130217A JPS57130217A JP1614381A JP1614381A JPS57130217A JP S57130217 A JPS57130217 A JP S57130217A JP 1614381 A JP1614381 A JP 1614381A JP 1614381 A JP1614381 A JP 1614381A JP S57130217 A JPS57130217 A JP S57130217A
- Authority
- JP
- Japan
- Prior art keywords
- data
- clock information
- circuit
- head
- track
- 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
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
- G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To enable high-density storage by carrying clock information on a recording medium, and providing a data discriminating circuit which discriminate data read out by the clock information and a circuit which determines writing timing. CONSTITUTION:One or more clock information tracks 2 and 3 are provided with heads 5 and 6 for reading clock information in addition to a head 7 for a data information track 4. Data read from the data information track 4 is discriminated 11 by a data selection instruction 12 and the clock information to output data 13 and a window signal 14. Writing timing is determined 15 by a write data signal 16 from a host system and a write data strobe signal 17 and a data window signal 14 to drive the head for the data track. A read/write switching circuit 18 connects the terminal of the head to a readout amplifying circuit 8 or a writing circuit 15.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1614381A JPS57130217A (en) | 1981-02-05 | 1981-02-05 | Magnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1614381A JPS57130217A (en) | 1981-02-05 | 1981-02-05 | Magnetic disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57130217A true JPS57130217A (en) | 1982-08-12 |
Family
ID=11908268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1614381A Pending JPS57130217A (en) | 1981-02-05 | 1981-02-05 | Magnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57130217A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5065142A (en) * | 1973-10-09 | 1975-06-02 |
-
1981
- 1981-02-05 JP JP1614381A patent/JPS57130217A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5065142A (en) * | 1973-10-09 | 1975-06-02 |
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