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:
Sep. 30, 2014
Filed:
Apr. 18, 2012
Jeong-il Seo, Daejeon, KR;
Seung-kwon Beack, Daejeon, KR;
In-seon Jang, Gyeonggi-do, KR;
Dae-young Jang, Daejon, KR;
Jin-woo Hong, Daejon, KR;
Jin-woong Kim, Daejon, KR;
Jeong-Il Seo, Daejeon, KR;
Seung-Kwon Beack, Daejeon, KR;
In-Seon Jang, Gyeonggi-do, KR;
Dae-Young Jang, Daejon, KR;
Jin-Woo Hong, Daejon, KR;
Jin-Woong Kim, Daejon, KR;
Abstract
Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.