CA2394909A1 - Data storage - Google Patents
Data storage Download PDFInfo
- Publication number
- CA2394909A1 CA2394909A1 CA002394909A CA2394909A CA2394909A1 CA 2394909 A1 CA2394909 A1 CA 2394909A1 CA 002394909 A CA002394909 A CA 002394909A CA 2394909 A CA2394909 A CA 2394909A CA 2394909 A1 CA2394909 A1 CA 2394909A1
- Authority
- CA
- Canada
- Prior art keywords
- data
- regenerated
- disk
- written
- derived
- 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
Links
- 238000013500 data storage Methods 0.000 title 1
- 238000001514 detection method Methods 0.000 abstract 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Video data in the form of a plurality of digitised frames, is stored on a plurality of magnetic disks. Each image frame is striped across a plurality of disks and redundant parity information, derived from the stripes, is written to an additional disk. Disk failure is detected and in response to this detection missing data is regenerated from the parity information. This allows the transfer of video data in real time to be maintained for output so that the system remains operational. While data is being read in real time, derived from regenerated data, the regenerated data is written to an operational disk, thereby reprotecting the data in the event of a subsequent failure. Frame supplied to output are labelled as being protected or unprotected and application programs may respond to this status information as considered appropriate.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1546896P | 1996-04-15 | 1996-04-15 | |
US60/015,468 | 1996-04-15 | ||
GBGB9619120.0A GB9619120D0 (en) | 1996-09-12 | 1996-09-12 | Data storage |
GB9619120.0 | 1996-09-12 | ||
CA002202725A CA2202725C (en) | 1996-04-15 | 1997-04-15 | Video storage |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002202725A Division CA2202725C (en) | 1996-04-15 | 1997-04-15 | Video storage |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2394909A1 true CA2394909A1 (en) | 1997-10-15 |
CA2394909C CA2394909C (en) | 2006-06-13 |
Family
ID=27170337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002394909A Expired - Fee Related CA2394909C (en) | 1996-04-15 | 1997-04-15 | Data storage |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2394909C (en) |
-
1997
- 1997-04-15 CA CA002394909A patent/CA2394909C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2394909C (en) | 2006-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |