The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 2014
Filed:
Aug. 22, 2007
Cas Kazimierz Apanowicz, Toronto, CA;
Victoria K. Eastwood, Toronto, CA;
Dominik A. Slezak, Warszawa, PL;
Piotr D. Synak, Warszawa, PL;
Arkadiusz G. Wojna, Warszawa, PL;
Marcin Wojnarski, Warszawa, PL;
Jakub Z. Wroblewski, Lomianki, PL;
Cas Kazimierz Apanowicz, Toronto, CA;
Victoria K. Eastwood, Toronto, CA;
Dominik A. Slezak, Warszawa, PL;
Piotr D. Synak, Warszawa, PL;
Arkadiusz G. Wojna, Warszawa, PL;
Marcin Wojnarski, Warszawa, PL;
Jakub Z. Wroblewski, Lomianki, PL;
Infobright Inc., Toronto, Ontario, CA;
Abstract
A method for applying adaptive data compression in a relational database system using a filter cascade having at least one compression filter stage in the filter cascade. The method comprises applying a data filter associated with the compression filter stage to the data input to produce reconstruction information and filtered data, then compressing the reconstruction information to be included in a filter stream. The filtered data is provided as a compression filter stage output. The method may comprise evaluating whether the compression filter stage provides improved compression compared to the data input. The filter stage output may be used as the input of a subsequent compression filter stage.