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:
Jan. 05, 2021
Filed:
Mar. 21, 2019
Fraunholder-gesellschaft Zur Foerderung Der Angewandten Forschung E.v., Munich, DE;
Joachim Keinert, Erlangen, DE;
Thomas Richter, Erlangen, DE;
Herbert Thoma, Erlangen, DE;
Christian Scherl, Erlangen, DE;
Manuel De Frutos López, Erlangen, DE;
Siegfried Foessel, Erlangen, DE;
Wolfgang Heppner, Erlangen, DE;
Miguel Ángel Martínez Del Amor, Erlangen, DE;
Sergej Wtjurin, Erlangen, DE;
Abstract
Transform block coding is performed very efficiently in terms of computational complexity and compression ratio, by coding the magnitude bits of the transform coefficients distributed in a matrix, in which the magnitude bits of the spectral coefficients are arranged column-wise with the spectral coefficients of the transform block ordered along a row direction of the matrix. That is, magnitude bits within a certain column of the matrix belong to a certain spectral coefficient, while magnitude bits within a certain row of the matrix belong to a certain bit plane. In this configuration, the distribution of non-zero magnitude bits may be condensed towards one corner of the matrix, corresponding to, for instance, the least significant bit plane and corresponding to, by using a scan order among the transform coefficients which sorts the transform coefficients generally in a manner from lowest to highest frequency, the lowest frequency. Various low complexity variants are presented.