Method of managing storage and retrieval of data objects

Details Method of managing storage and retrieval of data objects Method of managing storage and retrieval of data objects

2011-07-12

2011-07-12

Wu, Yicun (Department: 2158)

Data processing: database and file management or data structures

File or database maintenance

Database backup

C707S661000

Reexamination Certificate

active

07979394

ABSTRACT:
A technique for managing storage of a data object in a storage device involves receiving the data object (A) to store in the storage device, where the data object has an indicator bit pattern (P). Successive compression data transformations are applied to data object A to obtain respective corresponding compressed data objects, and one of these compressed data objects is selected, such that the selected compressed data object (C) has the shortest length with respect to the remaining compressed data objects. Compression information (I) is then associated with the compression data transformation used to generate data object C, and a threshold value T is calculated at least partly from the length of compression information I. If length (C)+T≧length (A), then the indicator bit pattern of data object A is reset and the data object A is written to the storage device. If length (C)+T<length (A), then the indicator bit pattern of data object C is set, compression information I is incorporated into data object C, and data object C is written to the storage device.

REFERENCES:
patent: 7451237 (2008-11-01), Takekawa et al.
patent: 7451290 (2008-11-01), Chandrasekaran et al.

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