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. 10, 2004
Filed:
Jan. 14, 2003
Applicant:
Inventors:
Mohammed Javed Absar, Singapore, SG;
Sapna George, Singapore, SG;
Assignee:
STMicroelectronics Asia Pacific Pte Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 1/902 ;
U.S. Cl.
CPC ...
G10L 1/902 ;
Abstract
A method for encoding frequency coefficients in an AC-3 Encoder. The method includes: representing frequency coefficients in theform of a respective exponent and mantissa; coding the exponents; and shifting the mantissas to compensate for changes in the exponent values, wherein the exponents comprise an original exponent set (e , e , . . . e ) which is mapped to a new exponent set (e ′, e ′, . . . , e′ ) after coding, so as to satisfy: ∥e′ −e′ ∥<D, where i=0, . . . , n and D is a maximum allowed difference between two consecutive exponents, and e′ ≦e .