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:
Aug. 20, 2002
Filed:
Jun. 09, 1999
Applicant:
Inventors:
William Paul Cockshott, Glasgow, GB;
Robert Bartholomew Lambert, Renfrewshire, GB;
Assignee:
University of Strathclyde, Glasgow, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/36 ; G06K 9/38 ; G06K 9/46 ;
U.S. Cl.
CPC ...
G06K 9/36 ; G06K 9/38 ; G06K 9/46 ;
Abstract
A data compression system using vector quantization utilises a codebook or index tables constructed by finding a small set of points in an n-dimensional space which are representative of a much larger population. The space is partitioned such that the integrals of the probability density functions over all the subspaces are approximately equal and thereafter the centre of gravity of each subspace is taken to represent the subspace population. The partitioning is effected sequentially to map n-dimensional space into one dimensional code space.