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:
Oct. 14, 2003
Filed:
Feb. 08, 2001
Russell A. Brown, Palo Alto, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
The present invention provides an entropy coding scheme using an adaptable prefix code. The prefix code is a binary representation of the algorithm used to compress and decompress the data. There are prefix zeros that represent the number of significant binary digits that follow the first one. According to one embodiment, this scheme works on both positive and negative integers and encodes lower order integers with a smaller length of codeword. In another embodiment, the zero integer is encoded as a special case with the shortest codeword. In yet another embodiment, the present scheme is preferred by data sets that are clustered about zero, such as image data sets that have been transformed via a wavelet transform or a discrete cosine transform.