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. 03, 2020
Filed:
Jul. 26, 2017
Dolby International Ab, Amsterdam Zuidoost, NL;
Mineo Tsushima, Kyoto, JP;
Takeshi Norimatsu, Hyogo, JP;
Kosuke Nishio, Osaka, JP;
Naoya Tanaka, Osaka, JP;
DOLBY INTERNATIONAL AB, Amsterdam Zuidoost, NL;
Abstract
An encoding device () includes an MDCT unit () that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit () that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit () that encodes to output the lower frequency spectrum obtained by the MDCT unit () and the extension data obtained by the BWE encoding unit (). The BWE encoding unit () generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit () and (ii) a second parameter which specifies a gain of the lower subband after being copied.