JPS57147111A - Processing system of data format of disc device - Google Patents
Processing system of data format of disc deviceInfo
- Publication number
- JPS57147111A JPS57147111A JP3158281A JP3158281A JPS57147111A JP S57147111 A JPS57147111 A JP S57147111A JP 3158281 A JP3158281 A JP 3158281A JP 3158281 A JP3158281 A JP 3158281A JP S57147111 A JPS57147111 A JP S57147111A
- Authority
- JP
- Japan
- Prior art keywords
- data
- region
- pure
- disc device
- data format
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To facilitate the control of a disc device, by lowering a recording density of a data format section required for comparison operation with a CPU, that is, the recording density other than pure data. CONSTITUTION:Synchronizing signal data of 46 and 47 are recorded just before and after a pure data region 42 are recorded at a sector format (b) in comparison with (a) of a conventional example. The bit density of a clock data 43 is higher than the bit density of 31, 39 and 47, the clock generator detects it to adjust the region other than a pure data region. In the pure data region, data exchange can be made with a sector buffer in high speed with a DMA mode in a controller. Inversely, since the transfer speed at the region other than the pure data is slow, the data in the ID field can be compared with a CPU easily.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3158281A JPS57147111A (en) | 1981-03-05 | 1981-03-05 | Processing system of data format of disc device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3158281A JPS57147111A (en) | 1981-03-05 | 1981-03-05 | Processing system of data format of disc device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57147111A true JPS57147111A (en) | 1982-09-10 |
Family
ID=12335174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3158281A Pending JPS57147111A (en) | 1981-03-05 | 1981-03-05 | Processing system of data format of disc device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57147111A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6147826A (en) * | 1997-03-12 | 2000-11-14 | Fujitsu Limited | Magnetic disk apparatus having duplicate sync byte patterns |
-
1981
- 1981-03-05 JP JP3158281A patent/JPS57147111A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6147826A (en) * | 1997-03-12 | 2000-11-14 | Fujitsu Limited | Magnetic disk apparatus having duplicate sync byte patterns |
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