Two level indexing method for accessing data blocks having first pointer to single location containing second pointers to the data blocks
US5276830A · kind A · utility
12Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1990 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Mar 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99956
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Mass data is managed as data files in a mass data storage device. Each data file is formed or plural data blocks. Upon editing of a data file, the data content of each data block forming the file is examined. If the data content of a data block is less than a predetermined value, data from one or more adjacent data blocks is extracted and placed in the one data block so that the data content thereof will be at least the predetermined constant value. In this manner, the data content of blocks forming a file is maintained at or above a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.