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:
Jul. 05, 2011
Filed:
Nov. 24, 2004
Junghoe Kim, Seoul, KR;
Shihwa Lee, Seoul, KR;
Sangwook Kim, Seoul, KR;
Eunmi OH, Seoul, KR;
Dohyung Kim, Hwaseong-si, KR;
Junghoe Kim, Seoul, KR;
Shihwa Lee, Seoul, KR;
Sangwook Kim, Seoul, KR;
Eunmi Oh, Seoul, KR;
Dohyung Kim, Hwaseong-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A method of and an apparatus for encoding/decoding an MPEG-4 bit sliced arithmetic coding (BSAC) audio bitstream having ancillary information. A time domain audio signal is converted to a frequency domain audio signal and quantized. A number of data bits is counted and a number of available bits per layer is obtained. The number of available bits per layer is modified considering the size of ancillary information. Actual audio data is encoded in units of layers and ancillary information is embedded in the encoded bitstream. A header is decoded and a layer structure of an audio bitstream is calculated to determine the size of the ancillary information as a difference between a size of data up to a top layer and a size of a frame. The ancillary information is extracted to improve meta data and sound quality of audio contents.